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Colonia del Sacramento weather & best time to visit

Sun, sea & sand

Colonia del Sacramento at a glance

Best time
Nov – Mar
Warmest month
Jan · 29°
Warmest sea
Jan · 25.4°
Sunshine a year
2,580 h
Rain a year
1,057 mm
Climate
Temperate
Time zone
UTC−3
Elevation
30 m

Climate in Colonia del Sacramento

Colonia del Sacramento has a temperate climate with warm summers and cool winters. January is the warmest month with average highs of 29 °C, while July is the coolest at 15 °C. With around 2,580 hours of sunshine a year, Colonia del Sacramento is sunny; January is the sunniest month with 9.5 hours a day.

Holiday weather through the year

Best time to visit

Best time to visit Colonia del Sacramento

The best time to visit Colonia del Sacramento is from November to March. For a beach holiday – sea from 21 °C, warm and mostly dry – go from November to March. For sightseeing, day trips and hiking, conditions are most comfortable from February to June and from August to December. The wettest month is March with 123 mm of precipitation.

Colonia del Sacramento through the seasons

How the weather changes over the seasons, with averages for each.

Colonia del Sacramento in spring

Sep – Nov

53

Fair

  • 19–25 °C by day
  • Sea 19 °C
  • 7.4 h of sun a day
  • 24 rainy days in all

Colonia del Sacramento in summer

Dec – Feb

94

Excellent

  • 28–29 °C by day
  • Sea 25 °C
  • 9.1 h of sun a day
  • 22 rainy days in all

Colonia del Sacramento in autumn

Mar – May

57

Fair

  • 19–26 °C by day
  • Sea 20 °C
  • 6.4 h of sun a day
  • 23 rainy days in all

Colonia del Sacramento in winter

Jun – Aug

23

Poor

  • 15–17 °C by day
  • Sea 13 °C
  • 5.3 h of sun a day
  • 21 rainy days in all

Which month for what?

Beach & swimming

Nov – Mar

Sea from 21 °C, warm and mostly dry

Sightseeing & hiking

Feb – Jun, Aug – Dec

15–28 °C and not too much rain

Find your perfect month

Tell us what you like and we rate every month in Colonia del Sacramento for you.

Swimming in the sea
Sunshine
Little rain

Your best months: December – February

Based on the climate averages; tap a month to see its details.

Your holiday weather, at a glance

Weather in October

Weather in October

48

Holiday weather in October

Fair

Best time to visit: November – March

Good forSightseeing & walks

A typical day in October

  1. Morning, 08:00: about 16°
  2. Midday, 13:00: about 21°
  3. Afternoon, 16:00: about 21°
  4. Evening, 20:00: about 18°
  5. Night, 23:00: about 15°

06:1019:04

Pleasant evenings; a light layer can help.

Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.

Light for photos in October

Golden hour
Morning 05:54–06:44 · evening 18:30–19:20
Blue hour
Morning 05:44–05:54 · evening 19:20–19:29

Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.

October in Colonia del Sacramento compared with home

Home:

Loading the climate at home …

Early or late October?

In October, daytime highs rise from about 20° at the start of the month to 23° at the end. The sea warms from 17° to 20°. The days get 1.0 h longer.

Early or late October?
October1 Oct31 Oct
Daytime high20°23°
Night-time low12°14°
Sea17°20°
Daylight12.4 h13.4 h

What is the weather like in Colonia del Sacramento in October?

In October, Colonia del Sacramento is warm: daytime highs average 22 °C, and nights cool down to about 13 °C. The sea averages 18.6 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 7.2 hours a day. Rain is frequent, with about 9 rainy days and 106 mm in total. All in all, October is a so-so month for a holiday in Colonia del Sacramento.

More details for October

Daylight
12 h 54 min06:10 – 19:04
UV index
9 · very highclear sky, noon (estimate)All months
Muggy days
1 daydew point 18 °C or moreAll months
Wind
26 km/haverage daily peakAll months
Cloud cover
50 %on averageAll months
Hot days
0 days30 °C or moreAll months
Time zone
UTC−3offset from UTC

How the score comes together

  • Temperatureweight 35 %43 %
  • Seaweight 25 %23 %
  • Sunshineweight 20 %70 %
  • Few rainy daysweight 20 %64 %

Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.

What to pack in October

  • Wetsuit for longer swims
  • Sunscreen
  • Sunglasses & sun hat
  • A jumper for the evenings
  • Rain jacket or umbrella

Compare two months in Colonia del Sacramento

Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.

vs

January has the better holiday weather in Colonia del Sacramento: score 96 against 48. In January, days are 7 °C warmer than in October. The sea is 7 °C warmer in January. January has 2 fewer rainy days. The sun shines 2 hours longer a day in January.

October vs January, Colonia del Sacramento
MonthOctoberJanuary
Holiday weather score4896better
Daytime high22°29°
Night-time low13°19°
Sea18.6°25.4°
Sunshine7.2 h9.5 hbetter
Rainy days97better
Rainfall106 mm77 mmbetter
Muggy days1better14

Based on the climate averages 1996–2025.

Colonia del Sacramento month by month

The typical weather for every month at a glance.

96January29° · Sea 25° · 9.5 h

In January, Colonia del Sacramento is hot: daytime highs average 29 °C, and nights cool down to about 19 °C. The sea averages 25.4 °C – pleasant for swimming. With around 9.5 hours of sunshine a day, there is plenty of sun. Rain falls on about 7 days, adding up to 77 mm. On about 11 days the thermometer climbs to 30 °C or more. All in all, January is an excellent month for a holiday in Colonia del Sacramento.

Colonia del Sacramento in January
93February28° · Sea 25° · 8.5 h

In February, Colonia del Sacramento is hot: daytime highs average 28 °C, and nights cool down to about 19 °C. The sea averages 25.1 °C – pleasant for swimming. The sun shines for around 8.5 hours a day. Rain falls on about 8 days, adding up to 107 mm. On about 7 days the thermometer climbs to 30 °C or more. All in all, February is an excellent month for a holiday in Colonia del Sacramento.

Colonia del Sacramento in February
88March26° · Sea 24° · 7.6 h

In March, Colonia del Sacramento is warm: daytime highs average 26 °C, and nights cool down to about 17 °C. The sea averages 23.6 °C – pleasant for swimming. The sun shines for around 7.6 hours a day. Rain falls on about 8 days, adding up to 123 mm. All in all, March is an excellent month for a holiday in Colonia del Sacramento.

Colonia del Sacramento in March
58April23° · Sea 21° · 6.2 h

In April, Colonia del Sacramento is warm: daytime highs average 23 °C, and nights cool down to about 14 °C. The sea averages 20.5 °C – refreshing for a swim. Expect around 6.2 hours of sunshine a day. Rain falls on about 8 days, adding up to 96 mm. All in all, April is a so-so month for a holiday in Colonia del Sacramento.

Colonia del Sacramento in April
25May19° · Sea 17° · 5.5 h

In May, Colonia del Sacramento is mild: daytime highs average 19 °C, and nights cool down to about 11 °C. The sea averages 17.1 °C – bracing, so a wetsuit helps for longer swims. Expect around 5.5 hours of sunshine a day. Rain falls on about 6 days, adding up to 72 mm. All in all, May is not an ideal month for a holiday in Colonia del Sacramento.

Colonia del Sacramento in May
22June16° · Sea 14° · 4.8 h

In June, Colonia del Sacramento is cool: daytime highs average 16 °C, and nights cool down to about 9 °C. The sea averages 14.0 °C – swimming is only for the hardy. Expect around 4.8 hours of sunshine a day. Rain falls on about 7 days, adding up to 60 mm. All in all, June is not an ideal month for a holiday in Colonia del Sacramento.

Colonia del Sacramento in June
22July15° · Sea 13° · 5.1 h

In July, Colonia del Sacramento is cool: daytime highs average 15 °C, and nights cool down to about 8 °C. The sea averages 12.7 °C – swimming is only for the hardy. Expect around 5.1 hours of sunshine a day. Rain falls on about 7 days, adding up to 74 mm. All in all, July is not an ideal month for a holiday in Colonia del Sacramento.

Colonia del Sacramento in July
25August17° · Sea 14° · 5.9 h

In August, Colonia del Sacramento is mild: daytime highs average 17 °C, and nights cool down to about 9 °C. The sea averages 13.6 °C – swimming is only for the hardy. Expect around 5.9 hours of sunshine a day. Rain falls on about 7 days, adding up to 81 mm. All in all, August is not an ideal month for a holiday in Colonia del Sacramento.

Colonia del Sacramento in August
27September19° · Sea 16° · 6.4 h

In September, Colonia del Sacramento is mild: daytime highs average 19 °C, and nights cool down to about 10 °C. The sea averages 15.5 °C – swimming is only for the hardy. Expect around 6.4 hours of sunshine a day. Rain falls on about 7 days, adding up to 82 mm. All in all, September is not an ideal month for a holiday in Colonia del Sacramento.

Colonia del Sacramento in September
48October22° · Sea 19° · 7.2 h

In October, Colonia del Sacramento is warm: daytime highs average 22 °C, and nights cool down to about 13 °C. The sea averages 18.6 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 7.2 hours a day. Rain is frequent, with about 9 rainy days and 106 mm in total. All in all, October is a so-so month for a holiday in Colonia del Sacramento.

Colonia del Sacramento in October
84November25° · Sea 21° · 8.7 h

In November, Colonia del Sacramento is warm: daytime highs average 25 °C, and nights cool down to about 15 °C. The sea averages 21.4 °C – refreshing for a swim. The sun shines for around 8.7 hours a day. Rain falls on about 8 days, adding up to 94 mm. All in all, November is an excellent month for a holiday in Colonia del Sacramento.

Colonia del Sacramento in November
94December28° · Sea 24° · 9.4 h

In December, Colonia del Sacramento is hot: daytime highs average 28 °C, and nights cool down to about 18 °C. The sea averages 23.9 °C – pleasant for swimming. With around 9.4 hours of sunshine a day, there is plenty of sun. Rain falls on about 8 days, adding up to 87 mm. On about 8 days the thermometer climbs to 30 °C or more. All in all, December is an excellent month for a holiday in Colonia del Sacramento.

Colonia del Sacramento in December

Climate in detail

Year & climate tableWarmest in January: 29°

Climate through the year

Long-term monthly averages. Tap a month to see its details.

Best time to visit

Nights and sleep in Colonia del Sacramento

How warm the nights get in each month, from the mean night-time low. Tap a month for details.

  • Cool 8–15°
  • Pleasant 15–20°

CoolOctober: nights around 13°. A duvet at night and a jumper for the evening. Muggy on about 1 day (dew point 18 °C or more).

The coolest nights are in July (8°), the warmest in January (19°). Nights are pleasant for sleeping (15 to 20 °C) from November to March.

Temperatures through the year

Average daytime high, night-time low and sea temperature per month.

OctoberDay 22°Night 13°Sea 19°
DayNightSea
MonthScoreDayNightSeaSunRain daysRain mm
JanuaryJan9629°19°25.4°9.5 h777
FebruaryFeb9328°19°25.1°8.5 h8107
MarchMar8826°17°23.6°7.6 h8123
AprilApr5823°14°20.5°6.2 h896
MayMay2519°11°17.1°5.5 h672
JuneJun2216°9°14.0°4.8 h760
JulyJul2215°8°12.7°5.1 h774
AugustAug2517°9°13.6°5.9 h781
SeptemberSep2719°10°15.5°6.4 h782
OctoberOct4822°13°18.6°7.2 h9106
NovemberNov8425°15°21.4°8.7 h894
DecemberDec9428°18°23.9°9.4 h887

Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences

34.46° S, 57.84° W · 30 m · America/Montevideo

Sea temperatureUp to 25° in January
Swimming calendar

Sea temperature in Colonia del Sacramento

Monthly sea surface temperature with the range of cooler and warmer years.

Sea in October18.6°Cfresh

8 in 10 years: 17.6 – 19.7 °C

Swimming season: Nov – Apr

  • cold
  • fresh
  • refreshing
  • pleasant
  • warm
  • very warm
OctoberMean sea temperature 18.6°8 in 10 years 17.6° – 19.7°
20°
Mean sea temperature8 in 10 years20 °C – comfortable for swimming

The sea temperature in Colonia del Sacramento ranges from 12.7 °C in July to 25.4 °C in January. It is warm enough for a comfortable swim (20 °C and more) from November to April.

The sea temperature varies from year to year: in January, eight out of ten years were between 24.4 and 26.3 °C.

Sea temperature by month
MonthAverageCool yearWarm yearFeels
JanuaryJan25.4°24.4°26.3°pleasant
FebruaryFeb25.1°24.0°26.3°pleasant
MarchMar23.6°22.5°24.5°pleasant
AprilApr20.5°19.7°21.4°refreshing
MayMay17.1°15.9°18.3°fresh
JuneJun14.0°12.8°15.2°cold
JulyJul12.7°11.9°13.9°cold
AugustAug13.6°12.8°14.8°cold
SeptemberSep15.5°14.4°16.6°cold
OctoberOct18.6°17.6°19.7°fresh
NovemberNov21.4°20.4°22.9°refreshing
DecemberDec23.9°22.7°25.0°pleasant
Sunshine2,580 hours a year
Sunshine

Sunshine hours in Colonia del Sacramento

Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.

Per year
2,580 hours
Sunniest month
Jan · 9.5 h a day
Least sunshine
Jun · 4.8 h a day
OctoberSunshine 7.2 hDaylight 12.9 hShare of daylight 56 %
SunshineDaylight

In October, the sun shines for about 7.2 of 12.9 hours of daylight in Colonia del Sacramento, 56 % of the daylight hours.

Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.

Rain1,057 mm a year, most in March
Rain

Rain in Colonia del Sacramento: rainy days and rainfall

A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.

Per year
1,057 mm on 90 days
Wettest month
Mar · 123 mm
Driest month
Jun · 60 mm
OctoberRainy days 9Rainfall 106 mm

In October, Colonia del Sacramento has about 9 rainy days with 106 mm of rain in total.

UV indexUp to 11 in December
Sun protection

UV index in Colonia del Sacramento

How strong the sun is at noon, month by month, and how quickly unprotected skin burns.

Clear-sky UV in October
9 · very highStay in the shade around midday; SPF 50, clothing, hat and sunglasses.

The sun is strongest in December (UV 11).

Minutes until sunburn in October

Very fair skin
about 15 min
Fair skin
about 20 min
Light brown skin
about 25 min
Olive skin
about 35 min

Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.

Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.

Wind & cloudsWindiest in November: 27 km/h
Wind & clouds

Wind and clouds in Colonia del Sacramento

How breezy and how cloudy Colonia del Sacramento is through the year. Tap a month to select it on the whole page.

Wind

Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.

Year average
25 km/h · moderate breeze
Windiest month
Nov · 27 km/h
Calmest month
May · 23 km/h
OctoberWind 26 km/hBeaufort 4
20
WindBeaufort 4

In October, the wind in Colonia del Sacramento typically peaks at 26 km/h during the day: Beaufort 4, moderate breeze.

Breezy months for windsurfing and kiting

From Beaufort 4 (20 km/h) the daily breeze is usually enough for windsurfing and often for kiting, and here it is that strong all year.

Clouds

Average share of the sky covered by cloud, day and night.

Year average
46 % · variable cloud
Clearest month
Jan · 37 %
Cloudiest month
Jun · 55 %
OctoberCloud cover 50 %Sunshine 7.2 h

In October, cloud covers on average 50 % of the sky over Colonia del Sacramento: variable cloud, with about 7.2 hours of sunshine a day.

Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.

Heat & humidity33 days of 30° or more a year
Heat & humidity

Heat and humidity in Colonia del Sacramento

How often the day gets hot in Colonia del Sacramento (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.

Hot days a year
33 days
Hottest month
Jan · 29 °C
Hot months
none

Heat calendar

  • pleasant
  • some hot or muggy days
  • often muggy
  • often hot
  • hot and muggy
OctoberHot days (30 °C+) 0Daytime high 22 °C

In October, Colonia del Sacramento has about 0 hot days, with an average daytime high of 22 °C: pleasant. Heat plays no part this month.

Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year

Planning a trip to Colonia del Sacramento

Weather for your travel dates

Pick your arrival and length of stay, and we sum up the weather to expect.

Colonia del Sacramento in the school holidays

How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.

Colonia del Sacramento has its best school-holiday weather during the Christmas holidays (score 95) and its weakest during May half-term (score 24).

  • Easter holidays

    Mar – Apr

    67

    Good

    • 24 °C by day
    • Sea 21 °C
    • 6.6 h of sun a day
    • 8 rainy days a month

    Good for: Sightseeing & walks

  • May half-term

    May – Jun

    24

    Poor

    • 18 °C by day
    • Sea 16 °C
    • 5.4 h of sun a day
    • 6 rainy days a month

    Good for: Sightseeing & walks

  • Summer holidays

    Jul – Aug

    24

    Poor

    • 16 °C by day
    • Sea 13 °C
    • 5.6 h of sun a day
    • 7 rainy days a month
  • October half-term

    Oct

    48

    Fair

    • 22 °C by day
    • Sea 19 °C
    • 7.2 h of sun a day
    • 9 rainy days a month

    Good for: Sightseeing & walks

  • Christmas holidays

    Dec – Jan

    95

    ExcellentBest holidays

    • 28 °C by day
    • Sea 25 °C
    • 9.5 h of sun a day
    • 7 rainy days a month

    Good for: Beach & swimming

Based on the climate averages 1996–2025.

Getting there

Flying from

Nonstop flight
about 13 h 50 min
Distance
11,070 km
Time zone
UTC−3
Jet lag
About 3 days (4 h west)

Rule of thumb for flying west: for a few days before, stay up a little later, and get afternoon and evening light at your destination.

Most routes need a change of planes, which adds time.

Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.

Good to know: Uruguay

Currency
Uruguayan Peso (UYU)
Language
Spanish
Sockets
Type C, F, I, L · 230 V
Traffic
Drives on the right
Dialling code
+598
Emergency number
911

UK plugs need a travel adapter

Sources: GeoNames (CC BY 4.0) and Wikidata (CC0). Please check details before you travel.

Compare & alternatives

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Colonia del Sacramento compared

Put Colonia del Sacramento side by side with another destination.

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Colonia del Sacramento vs Buenos Aires

In October the holiday weather in Colonia del Sacramento and Buenos Aires is about equally good (score 48 vs 45). During the day Buenos Aires is 1 °C cooler than Colonia del Sacramento. The sea is about equally warm.

Colonia del Sacramento vs Buenos Aires, in October
in OctoberColonia del SacramentoBuenos Aires
Holiday weather score4845
Daytime high22°21°
Sea19°19°
Sunshine7 h7 h
Rainy days99
Best timeNov – MarAug – May

Through the year

OctoberColonia del Sacramento 22°Buenos Aires 21°
Colonia del SacramentoBuenos Aires
Go to Buenos Aires
Best places in the country
Ranking

Uruguay in October: the best places

In October, Colonia del Sacramento ranks 5 of 7 destinations in this country.

  1. Salto25°84
  2. 2Montevideo21°17°82
  3. 3Rivera24°79
  4. 4Fray Bentos24°19°60
  5. 5Colonia del SacramentoThis page22°19°48
  6. 6Maldonado20°16°30
  7. 7Punta del Este19°16°25
All destinations: Uruguay
Places nearby4 places within 156 km

Near Colonia del Sacramento

Other destinations close by.

Places with a similar climatee.g. Montevideo and Fray Bentos

Places with a climate like Colonia del Sacramento

Destinations whose weather through the year is closest to Colonia del Sacramento's – good alternatives.

  1. 83 % similar82MontevideoUruguay21°17°Best time: Sep – May
  2. 81 % similar60Fray BentosUruguay24°19°Best time: Nov – Mar
  3. 73 % similar30MaldonadoUruguay20°16°Best time: Dec – Mar
  4. 71 % similar94AdelaideAustralia22°16°Best time: Oct – Apr

Frequently asked questions about Colonia del Sacramento

When is the best time to visit Colonia del Sacramento?

The best time to visit Colonia del Sacramento is from November to March. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.

How warm is the sea in Colonia del Sacramento?

The sea temperature in Colonia del Sacramento ranges from 12.7 °C in July to 25.4 °C in January. It is warm enough for a comfortable swim (20 °C and more) from November to April.

Can you swim in Colonia del Sacramento in October?

Only if you don't mind cold water: in October the sea averages just 18.6 °C. Comfortable swimming is possible from November to April.

What is the warmest month in Colonia del Sacramento?

January is the warmest month, with average highs of 29 °C and nights around 19 °C. July is the coolest month at 15 °C.

When does it rain most in Colonia del Sacramento?

The wettest month is March with 123 mm of precipitation. The driest month is June with 60 mm.

How many hours of sunshine does Colonia del Sacramento get?

Colonia del Sacramento gets around 2,580 hours of sunshine a year. The sunniest month is January with 9.5 hours a day; in June there are 4.8 hours a day.

What time zone is Colonia del Sacramento in?

Colonia del Sacramento is on UTC−3 all year.

How long is the flight from London to Colonia del Sacramento?

A nonstop flight from London to Colonia del Sacramento takes about 13 h 50 min, for a straight-line distance of about 11,070 km. Most routes need a change of planes, which adds time.

Which school holidays are best for Colonia del Sacramento?

Colonia del Sacramento has its best school-holiday weather during the Christmas holidays (score 95) and its weakest during May half-term (score 24). Holiday ratings (0–100): Easter holidays 67, May half-term 24, summer holidays 24, October half-term 48, Christmas holidays 95.