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Uusikaupunki weather & best time to visit

Sun, sea & sand

Uusikaupunki at a glance

Best time
Jul
Warmest month
Jul · 21°
Warmest sea
Aug · 17.1°
Sunshine a year
1,950 h
Rain a year
601 mm
Climate
Continental
Time zone
UTC+2 / UTC+3
Elevation
16 m

Climate in Uusikaupunki

Uusikaupunki has mild to warm summers and cold winters with occasional snow. July is the warmest month with average highs of 21 °C, while February is the coolest at −1 °C. With around 1,950 hours of sunshine a year, Uusikaupunki is moderately sunny; June is the sunniest month with 9.9 hours a day.

Holiday weather through the year

Best time to visit

Best time to visit Uusikaupunki

The best time to visit Uusikaupunki is in July. The sea stays too cool for a classic beach holiday: even in August it only reaches 17.1 °C. For sightseeing, day trips and hiking, conditions are most comfortable in June and in September. Rain is frequent in August and from October to December; the wettest month is August with 72 mm.

Uusikaupunki through the seasons

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

Uusikaupunki in spring

Mar – May

28

Poor

  • 2–13 °C by day
  • Sea 3 °C
  • 7.1 h of sun a day
  • 23 rainy days in all

Uusikaupunki in summer

Jun – Aug

35

Poor

  • 18–21 °C by day
  • Sea 15 °C
  • 9.3 h of sun a day
  • 34 rainy days in all

Uusikaupunki in autumn

Sep – Nov

12

Poor

  • 5–16 °C by day
  • Sea 10 °C
  • 3.4 h of sun a day
  • 35 rainy days in all

Uusikaupunki in winter

Dec – Feb

11

Poor

  • −1–2 °C by day
  • Sea 2 °C
  • 1.5 h of sun a day
  • 32 rainy days in all

Which month for what?

Beach & swimming

No month

Sea from 21 °C, warm and mostly dry

Sightseeing & hiking

Jun, Sep

15–28 °C and not too much rain

Rainy months

Aug, Oct – Dec

Rainy season or more than 12 rainy days

Snow

Nov – Mar

Snow on 2 or more days

Find your perfect month

Tell us what you like and we rate every month in Uusikaupunki for you.

Swimming in the sea
Sunshine
Little rain

Your best months: May, July – August

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

Your holiday weather, at a glance

Weather in October

Weather in October

8

Holiday weather in October

Poor

Best time to visit: July

Keep in mindFrequent rain

A typical day in October

  1. Morning, 08:00: about 5°
  2. Midday, 13:00: about 9°
  3. Afternoon, 16:00: about 9°
  4. Evening, 20:00: about 7°
  5. Night, 23:00: about 6°

08:1318:27

Cold evenings: bring a warm jacket.

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

Light for photos in October

Golden hour
Morning 07:46–09:13 · evening 17:27–18:54
Blue hour
Morning 07:30–07:46 · evening 18:54–19:10

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 Uusikaupunki compared with home

Home:

Loading the climate at home …

What is the weather like in Uusikaupunki in October?

In October, Uusikaupunki is cold: daytime highs average 9 °C, and nights cool down to about 5 °C. The sea averages 10.2 °C – swimming is only for the hardy. The sun is scarce, with only about 3.1 hours a day. Rain is frequent, with about 12 rainy days and 64 mm in total. All in all, October is not an ideal month for a holiday in Uusikaupunki.

More details for October

Daylight
10 h 14 min08:13 – 18:27
UV index
1 · lowclear sky, noon (estimate)All months
Muggy days
0 daysdew point 18 °C or moreAll months
Wind
24 km/haverage daily peakAll months
Cloud cover
72 %on averageAll months
Hot days
0 days30 °C or more
Snow days
1 day1 cm or more of fresh snowAll months
Time zone
UTC+3offset from UTC

How the score comes together

  • Temperatureweight 35 %0 %
  • Seaweight 25 %0 %
  • Sunshineweight 20 %2 %
  • Few rainy daysweight 20 %41 %

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

What to pack in October

  • Warm jacket
  • Rain jacket or umbrella

Compare two months in Uusikaupunki

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

vs

July has the better holiday weather in Uusikaupunki: score 40 against 8. In July, days are 12 °C warmer than in October. The sea is 6 °C warmer in July. The sun shines 7 hours longer a day in July.

October vs July, Uusikaupunki
MonthOctoberJuly
Holiday weather score840better
Daytime high9°21°
Night-time low5°14°
Sea10.2°16.0°
Sunshine3.1 h9.9 hbetter
Rainy days1212
Rainfall64 mm70 mm
Muggy days0better1

Based on the climate averages 1996–2025.

Uusikaupunki month by month

The typical weather for every month at a glance.

10January0° · Sea 2° · 1.3 h

In January, Uusikaupunki is bitterly cold: daytime highs average 0 °C, and nights often drop below freezing (−5 °C). The sea averages 2.0 °C – swimming is only for the hardy. The sun is scarce, with only about 1.3 hours a day. Precipitation falls on about 11 days, totalling 46 mm; on about 7 of them it snows. All in all, January is not an ideal month for a holiday in Uusikaupunki.

Uusikaupunki in January
14February−1° · Sea 1° · 2.5 h

In February, Uusikaupunki is bitterly cold: daytime highs average −1 °C, and nights often drop below freezing (−6 °C). The sea averages 0.9 °C – swimming is only for the hardy. The sun is scarce, with only about 2.5 hours a day. Precipitation falls on about 9 days, totalling 35 mm; on about 6 of them it snows. All in all, February is not an ideal month for a holiday in Uusikaupunki.

Uusikaupunki in February
21March2° · Sea 1° · 4.7 h

In March, Uusikaupunki is bitterly cold: daytime highs average 2 °C, and nights often drop below freezing (−4 °C). The sea averages 0.9 °C – swimming is only for the hardy. Expect around 4.7 hours of sunshine a day. Precipitation falls on about 7 days, totalling 30 mm; on about 4 of them it snows. All in all, March is not an ideal month for a holiday in Uusikaupunki.

Uusikaupunki in March
29April8° · Sea 2° · 7.1 h

In April, Uusikaupunki is cold: daytime highs average 8 °C, and nights cool down to about 1 °C. The sea averages 2.2 °C – swimming is only for the hardy. The sun shines for around 7.1 hours a day. Rain falls on about 7 days, adding up to 30 mm. All in all, April is not an ideal month for a holiday in Uusikaupunki.

Uusikaupunki in April
34May13° · Sea 6° · 9.6 h

In May, Uusikaupunki is cool: daytime highs average 13 °C, and nights cool down to about 5 °C. The sea averages 5.6 °C – swimming is only for the hardy. With around 9.6 hours of sunshine a day, there is plenty of sun. Rain falls on about 8 days, adding up to 37 mm. All in all, May is not an ideal month for a holiday in Uusikaupunki.

Uusikaupunki in May
33June18° · Sea 11° · 9.9 h

In June, Uusikaupunki is mild: daytime highs average 18 °C, and nights cool down to about 10 °C. The sea averages 10.9 °C – swimming is only for the hardy. With around 9.9 hours of sunshine a day, there is plenty of sun. Rain is frequent, with about 9 rainy days and 51 mm in total. All in all, June is not an ideal month for a holiday in Uusikaupunki.

Uusikaupunki in June
40July21° · Sea 16° · 9.9 h

In July, Uusikaupunki is warm: daytime highs average 21 °C, and nights cool down to about 14 °C. The sea averages 16.0 °C – swimming is only for the hardy. With around 9.9 hours of sunshine a day, there is plenty of sun. Rain is frequent, with about 12 rainy days and 70 mm in total. All in all, July is a so-so month for a holiday in Uusikaupunki – and yet one of the best months here.

Uusikaupunki in July
33August20° · Sea 17° · 8.2 h

In August, Uusikaupunki is mild: daytime highs average 20 °C, and nights cool down to about 13 °C. The sea averages 17.1 °C – bracing, so a wetsuit helps for longer swims. The sun shines for around 8.2 hours a day. Rain is frequent, with about 12 rainy days and 72 mm in total. All in all, August is not an ideal month for a holiday in Uusikaupunki.

Uusikaupunki in August
21September16° · Sea 14° · 5.8 h

In September, Uusikaupunki is cool: daytime highs average 16 °C, and nights cool down to about 9 °C. The sea averages 14.1 °C – swimming is only for the hardy. Expect around 5.8 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 56 mm in total. All in all, September is not an ideal month for a holiday in Uusikaupunki.

Uusikaupunki in September
8October9° · Sea 10° · 3.1 h

In October, Uusikaupunki is cold: daytime highs average 9 °C, and nights cool down to about 5 °C. The sea averages 10.2 °C – swimming is only for the hardy. The sun is scarce, with only about 3.1 hours a day. Rain is frequent, with about 12 rainy days and 64 mm in total. All in all, October is not an ideal month for a holiday in Uusikaupunki.

Uusikaupunki in October
8November5° · Sea 7° · 1.2 h

In November, Uusikaupunki is cold: daytime highs average 5 °C, and nights cool down to about 1 °C. The sea averages 6.8 °C – swimming is only for the hardy. The sun is scarce, with only about 1.2 hours a day. Rain is frequent, with about 12 rainy days and 56 mm in total. Snow falls on about 2 days. All in all, November is not an ideal month for a holiday in Uusikaupunki.

Uusikaupunki in November
8December2° · Sea 4° · 0.7 h

In December, Uusikaupunki is bitterly cold: daytime highs average 2 °C, and nights often drop below freezing (−2 °C). The sea averages 4.0 °C – swimming is only for the hardy. The sun is scarce, with only about 0.7 hours a day. Precipitation falls on about 12 days, totalling 53 mm; on about 5 of them it snows. All in all, December is not an ideal month for a holiday in Uusikaupunki.

Uusikaupunki in December

Climate in detail

Climate through the year

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

Best time to visit

Nights and sleep in Uusikaupunki

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

  • Frost below 0°
  • Cold 0–8°
  • Cool 8–15°

ColdOctober: nights around 5°. The room should be heated.

The coolest nights are in February (−6°), the warmest in July (14°). Nights fall below 8 °C on average from October to May, so the room should be heated.

Temperatures through the year

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

OctoberDay 9°Night 5°Sea 10°
DayNightSea
MonthScoreDayNightSeaSunRain daysRain mm
JanuaryJan100°−5°2.0°1.3 h1146
FebruaryFeb14−1°−6°0.9°2.5 h935
MarchMar212°−4°0.9°4.7 h730
AprilApr298°1°2.2°7.1 h730
MayMay3413°5°5.6°9.6 h837
JuneJun3318°10°10.9°9.9 h951
JulyJul4021°14°16.0°9.9 h1270
AugustAug3320°13°17.1°8.2 h1272
SeptemberSep2116°9°14.1°5.8 h1056
OctoberOct89°5°10.2°3.1 h1264
NovemberNov85°1°6.8°1.2 h1256
DecemberDec82°−2°4.0°0.7 h1253

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

60.80° N, 21.41° E · 16 m · Europe/Helsinki

Swimming calendar

Sea temperature in Uusikaupunki

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

Sea in October10.2°Ccold

8 in 10 years: 9.4 – 11.3 °C

Swimming season: Always below 20 °C

  • cold
  • fresh
  • refreshing
  • pleasant
  • warm
  • very warm
OctoberMean sea temperature 10.2°8 in 10 years 9.4° – 11.3°
20°
Mean sea temperature8 in 10 years20 °C – comfortable for swimming

The sea temperature in Uusikaupunki ranges from 0.9 °C in February to 17.1 °C in August. Even at its warmest the sea stays below 20 °C, so swimming is bracing at best.

The sea warms up slowly: it is warmest in August, while the air already peaks in July. From October to February the sea is even warmer than the afternoon air. The sea temperature varies from year to year: in August, eight out of ten years were between 15.8 and 18.2 °C.

Sea temperature by month
MonthAverageCool yearWarm yearFeels
JanuaryJan2.0°0.9°3.3°cold
FebruaryFeb0.9°−0.3°1.9°cold
MarchMar0.9°0.0°1.7°cold
AprilApr2.2°1.1°3.2°cold
MayMay5.6°4.6°6.7°cold
JuneJun10.9°9.0°13.4°cold
JulyJul16.0°14.4°17.4°cold
AugustAug17.1°15.8°18.2°fresh
SeptemberSep14.1°12.7°15.4°cold
OctoberOct10.2°9.4°11.3°cold
NovemberNov6.8°5.6°7.9°cold
DecemberDec4.0°2.7°5.5°cold
Sunshine

Sunshine hours in Uusikaupunki

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

Per year
1,950 hours
Sunniest month
Jun · 9.9 h a day
Least sunshine
Dec · 0.7 h a day
OctoberSunshine 3.1 hDaylight 10.2 hShare of daylight 30 %
SunshineDaylight

In October, the sun shines for about 3.1 of 10.2 hours of daylight in Uusikaupunki, 30 % 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.

Rain

Rain in Uusikaupunki: 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
601 mm on 123 days
Wettest month
Aug · 72 mm
Driest month
Mar · 30 mm
OctoberRainy days 12Rainfall 64 mm

In October, Uusikaupunki has about 12 rainy days with 64 mm of rain in total.

Sun protection

UV index in Uusikaupunki

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

Clear-sky UV in October
1 · lowLittle protection needed; sunglasses on bright days.

The sun is strongest in June (UV 5).

Minutes until sunburn in October

Very fair skin
over 2 h
Fair skin
over 2 h
Light brown skin
over 2 h
Olive skin
over 2 h

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 & clouds

Wind and clouds in Uusikaupunki

How breezy and how cloudy Uusikaupunki 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
22 km/h · moderate breeze
Windiest month
Dec · 25 km/h
Calmest month
Jul · 19 km/h
OctoberWind 24 km/hBeaufort 4
20
WindBeaufort 4

In October, the wind in Uusikaupunki typically peaks at 24 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: all year except Jul.

Clouds

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

Year average
66 % · mostly cloudy
Clearest month
May · 53 %
Cloudiest month
Nov · 80 %
OctoberCloud cover 72 %Sunshine 3.1 h

In October, cloud covers on average 72 % of the sky over Uusikaupunki: mostly cloudy, with about 3.1 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.

Snow

Snow in Uusikaupunki

When Uusikaupunki is likely to be white: the chance of seeing snow during a week's stay, the days with fresh snow and how much falls. Tap a month to select it.

Snow days a year
26 days
Fresh snow a year
83 cm
Snowy months
Jan – Mar

Snow calendar

  • hardly any
  • possible
  • likely
  • very likely
OctoberDays with fresh snow 1Fresh snow 2 cmChance of snow 7 / 100

In October, Uusikaupunki has about 1 day with at least 1 cm of fresh snow, 2 cm in total. The chance of seeing snow during a week's stay is 7 out of 100: hardly any.

Snow days bring at least 1 cm of fresh snow. Fresh snow comes from ERA5 snowfall (1996–2025) at the height of the place, not on the slopes above it; the snow chance also weighs whether the snow settles. An estimate from climate averages, not a snow report.

Planning a trip to Uusikaupunki

Weather for your travel dates

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

Uusikaupunki 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.

Uusikaupunki has its best school-holiday weather during the summer holidays (score 35) and its weakest during October half-term (score 8).

  • Easter holidays

    Mar – Apr

    27

    Poor

    • 6 °C by day
    • Sea 2 °C
    • 6.4 h of sun a day
    • 7 rainy days a month

    Keep in mind: Snow

  • May half-term

    May – Jun

    34

    Poor

    • 14 °C by day
    • Sea 7 °C
    • 9.7 h of sun a day
    • 8 rainy days a month
  • Summer holidays

    Jul – Aug

    35

    PoorBest holidays

    • 21 °C by day
    • Sea 17 °C
    • 8.8 h of sun a day
    • 12 rainy days a month

    Keep in mind: Frequent rain

  • October half-term

    Oct

    8

    Poor

    • 9 °C by day
    • Sea 10 °C
    • 3.1 h of sun a day
    • 12 rainy days a month

    Keep in mind: Frequent rain

  • Christmas holidays

    Dec – Jan

    9

    Poor

    • 1 °C by day
    • Sea 3 °C
    • 1.0 h of sun a day
    • 12 rainy days a month

    Keep in mind: Frequent rain, Snow

Based on the climate averages 1996–2025.

Getting there

Flying from

Nonstop flight
about 2 h 30 min
Distance
1,690 km
Time zone
UTC+3
Jet lag
Hardly any (under 3 h)

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

Compare & alternatives

Compare

Uusikaupunki compared

Put Uusikaupunki side by side with another destination.

Nearby:
Compare with home:

Uusikaupunki vs Rauma

In October the holiday weather in Uusikaupunki and Rauma is about equally good (score 8 vs 8). During the day it is about as warm in Rauma as in Uusikaupunki. The sea is about equally warm.

Uusikaupunki vs Rauma, in October
in OctoberUusikaupunkiRauma
Holiday weather score88
Daytime high9°9°
Sea10°10°
Sunshine3 h3 h
Rainy days1213
Best timeJulApr – Jul

Through the year

OctoberUusikaupunki 9°Rauma 9°
UusikaupunkiRauma
Go to Rauma
Ranking

Finland in October: the best places

In October, Uusikaupunki ranks 29 among the 31 nearest destinations in this country.

  1. Turku9°11°21
  2. 2Espoo9°11°21
  3. 3Helsinki9°11°20
  4. 4Vantaa9°19
  5. 5Seinäjoki7°16
  6. 6Kokkola7°9°16
  7. 7Rovaniemi4°16
  8. 8Nokia8°15
  9. 29UusikaupunkiThis page9°10°8
All destinations: Finland

Near Uusikaupunki

Other destinations close by.

Places with a climate like Uusikaupunki

Destinations whose weather through the year is closest to Uusikaupunki's – good alternatives.

  1. 89 % similar10KirkkonummiFinland10°11°Best time: May, Jul
  2. 88 % similar7PaldiskiEstonia10°11°Best time: Jul – Aug
  3. 88 % similar21EspooFinland9°11°Best time: May – Aug
  4. 88 % similar10HärnösandSweden8°9°Best time: Jul

Frequently asked questions about Uusikaupunki

When is the best time to visit Uusikaupunki?

The best time to visit Uusikaupunki is in July. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.

How warm is the sea in Uusikaupunki?

The sea temperature in Uusikaupunki ranges from 0.9 °C in February to 17.1 °C in August. Even at its warmest the sea stays below 20 °C, so swimming is bracing at best.

Can you swim in Uusikaupunki in October?

Only if you don't mind cold water: in October the sea averages just 10.2 °C. Comfortable swimming temperatures are not reached at any time of year.

What is the warmest month in Uusikaupunki?

July is the warmest month, with average highs of 21 °C and nights around 14 °C. February is the coolest month at −1 °C.

When does it rain most in Uusikaupunki?

Rain is frequent in August and from October to December; the wettest month is August with 72 mm. The driest month is March with 30 mm.

How many hours of sunshine does Uusikaupunki get?

Uusikaupunki gets around 1,950 hours of sunshine a year. The sunniest month is June with 9.9 hours a day; in December there are 0.7 hours a day.

What time zone is Uusikaupunki in?

Uusikaupunki is on UTC+2 in January and UTC+3 in July.

How long is the flight from London to Uusikaupunki?

A nonstop flight from London to Uusikaupunki takes about 2 h 30 min, for a straight-line distance of about 1,690 km.

Which school holidays are best for Uusikaupunki?

Uusikaupunki has its best school-holiday weather during the summer holidays (score 35) and its weakest during October half-term (score 8). Holiday ratings (0–100): Easter holidays 27, May half-term 34, summer holidays 35, October half-term 8, Christmas holidays 9.