AI-generatedCastro at a glance
- Best time
- Dec – Mar
- Warmest month
- Feb · 21°
- Warmest sea
- Jan · 14.0°
- Sunshine a year
- 1,490 h
- Rain a year
- 1,478 mm
- Climate
- Maritime
- Time zone
- UTC−3 / UTC−4
- Elevation
- 81 m
Climate in Castro
Castro has a maritime climate with moderate summers and cool, often grey winters. February is the warmest month with average highs of 21 °C, while July is the coolest at 11 °C. With around 1,490 hours of sunshine a year, Castro is rather dull; February is the sunniest month with 6.7 hours a day.
Holiday weather through the year
Best time to visit Castro
The best time to visit Castro is from December to March. The sea stays too cool for a classic beach holiday: even in January it only reaches 14.0 °C. For sightseeing, day trips and hiking, conditions are most comfortable from January to March. Rain is frequent from April to November; the wettest month is August with 196 mm.
Castro through the seasons
How the weather changes over the seasons, with averages for each.
Castro in spring
Sep – Nov
Fair
- 13–16 °C by day
- Sea 11 °C
- 4.4 h of sun a day
- 46 rainy days in all
Castro in summer
Dec – Feb
Good
- 19–21 °C by day
- Sea 14 °C
- 6.3 h of sun a day
- 30 rainy days in all
Castro in autumn
Mar – May
Fair
- 13–19 °C by day
- Sea 13 °C
- 3.5 h of sun a day
- 42 rainy days in all
Castro in winter
Jun – Aug
Poor
- 11–12 °C by day
- Sea 11 °C
- 2.3 h of sun a day
- 57 rainy days in all
Which month for what?
Beach & swimming
No month
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Jan – Mar
15–28 °C and not too much rain
Rainy months
Apr – Nov
Rainy season or more than 12 rainy days
Find your perfect month
Tell us what you like and we rate every month in Castro for you.
Your best months: January – February
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Fair
Best time to visit: December – March
Where to go in OctoberSea temperature in October
Keep in mindFrequent rain
A typical day in October
- Morning, 08:00: about 7°
- Midday, 13:00: about 14°
- Afternoon, 16:00: about 15°
- Evening, 20:00: about 12°
- Night, 23:00: about 9°
07:0620:16
Cool evenings: pack a jumper or a jacket.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 06:48–07:43 · evening 19:38–20:33
- Blue hour
- Morning 06:37–06:48 · evening 20:33–20:45
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 Castro compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs rise from about 14° at the start of the month to 16° at the end. The sea warms from 11° to 12°. The days get 1.4 h longer.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 14° | 16° |
| Night-time low | 5° | 6° |
| Sea | 11° | 12° |
| Daylight | 12.5 h | 13.9 h |
What is the weather like in Castro in October?
In October, Castro is cool: daytime highs average 15 °C, and nights cool down to about 5 °C. The sea averages 11.3 °C – swimming is only for the hardy. Expect around 4.4 hours of sunshine a day. It rains often – on about 16 days, adding up to 117 mm. All in all, October is a so-so month for a holiday in Castro.
More details for October
- Daylight
- 13 h 10 min07:06 – 20:16
- UV index
- 7 · highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 15 km/haverage daily peakAll months
- Cloud cover
- 68 %on averageAll months
- Hot days
- 0 days30 °C or more
- Time zone
- UTC−3offset from UTC
How the score comes together
- Temperatureweight 50 %67 %
- Sunshineweight 20 %23 %
- Few rainy daysweight 30 %14 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Compare two months in Castro
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
February has the better holiday weather in Castro: score 84 against 42. In February, days are 6 °C warmer than in October. The sea is 3 °C warmer in February. February has 8 fewer rainy days. The sun shines 2 hours longer a day in February.
| Month | October | February |
|---|---|---|
| Holiday weather score | 42 | 84better |
| Daytime high | 15° | 21° |
| Night-time low | 5° | 10° |
| Sea | 11.3° | 13.8° |
| Sunshine | 4.4 h | 6.7 hbetter |
| Rainy days | 16 | 8better |
| Rainfall | 117 mm | 56 mmbetter |
Based on the climate averages 1996–2025.
Castro month by month
The typical weather for every month at a glance.
80January20° · Sea 14° · 6.5 h
In January, Castro is mild: daytime highs average 20 °C, and nights cool down to about 10 °C. The sea averages 14.0 °C – swimming is only for the hardy. The sun shines for around 6.5 hours a day. Rain is frequent, with about 9 rainy days and 63 mm in total. All in all, January is an excellent month for a holiday in Castro.
Castro in January84February21° · Sea 14° · 6.7 h
In February, Castro is mild: daytime highs average 21 °C, and nights cool down to about 10 °C. The sea averages 13.8 °C – swimming is only for the hardy. The sun shines for around 6.7 hours a day. Rain falls on about 8 days, adding up to 56 mm. All in all, February is an excellent month for a holiday in Castro.
Castro in February70March19° · Sea 13° · 4.8 h
In March, Castro is mild: daytime highs average 19 °C, and nights cool down to about 9 °C. The sea averages 13.4 °C – swimming is only for the hardy. Expect around 4.8 hours of sunshine a day. Rain is frequent, with about 11 rainy days and 91 mm in total. All in all, March is a good month for a holiday in Castro.
Castro in March49April16° · Sea 13° · 3.4 h
In April, Castro is cool: daytime highs average 16 °C, and nights cool down to about 7 °C. The sea averages 12.5 °C – swimming is only for the hardy. The sun is scarce, with only about 3.4 hours a day. Rain is frequent, with about 14 rainy days and 116 mm in total. All in all, April is a so-so month for a holiday in Castro.
Castro in April30May13° · Sea 12° · 2.2 h
In May, Castro is cool: daytime highs average 13 °C, and nights cool down to about 6 °C. The sea averages 12.0 °C – swimming is only for the hardy. The sun is scarce, with only about 2.2 hours a day. It rains often – on about 17 days, adding up to 165 mm. All in all, May is not an ideal month for a holiday in Castro.
Castro in May15June11° · Sea 12° · 1.8 h
In June, Castro is cool: daytime highs average 11 °C, and nights cool down to about 4 °C. The sea averages 11.5 °C – swimming is only for the hardy. The sun is scarce, with only about 1.8 hours a day. It rains often – on about 19 days, adding up to 192 mm. All in all, June is not an ideal month for a holiday in Castro.
Castro in June15July11° · Sea 11° · 2.2 h
In July, Castro is cool: daytime highs average 11 °C, and nights cool down to about 4 °C. The sea averages 10.9 °C – swimming is only for the hardy. The sun is scarce, with only about 2.2 hours a day. It rains often – on about 18 days, adding up to 174 mm. All in all, July is not an ideal month for a holiday in Castro.
Castro in July18August12° · Sea 11° · 2.9 h
In August, Castro is cool: daytime highs average 12 °C, and nights cool down to about 4 °C. The sea averages 10.7 °C – swimming is only for the hardy. The sun is scarce, with only about 2.9 hours a day. It rains often – on about 20 days, adding up to 196 mm. All in all, August is not an ideal month for a holiday in Castro.
Castro in August31September13° · Sea 11° · 3.8 h
In September, Castro is cool: daytime highs average 13 °C, and nights cool down to about 4 °C. The sea averages 10.7 °C – swimming is only for the hardy. The sun is scarce, with only about 3.8 hours a day. It rains often – on about 17 days, adding up to 133 mm. All in all, September is not an ideal month for a holiday in Castro.
Castro in September42October15° · Sea 11° · 4.4 h
In October, Castro is cool: daytime highs average 15 °C, and nights cool down to about 5 °C. The sea averages 11.3 °C – swimming is only for the hardy. Expect around 4.4 hours of sunshine a day. It rains often – on about 16 days, adding up to 117 mm. All in all, October is a so-so month for a holiday in Castro.
Castro in October58November16° · Sea 12° · 4.9 h
In November, Castro is mild: daytime highs average 16 °C, and nights cool down to about 7 °C. The sea averages 12.2 °C – swimming is only for the hardy. Expect around 4.9 hours of sunshine a day. Rain is frequent, with about 14 rainy days and 99 mm in total. All in all, November is a so-so month for a holiday in Castro.
Castro in November71December19° · Sea 13° · 5.6 h
In December, Castro is mild: daytime highs average 19 °C, and nights cool down to about 9 °C. The sea averages 13.1 °C – swimming is only for the hardy. Expect around 5.6 hours of sunshine a day. Rain is frequent, with about 12 rainy days and 78 mm in total. All in all, December is a good month for a holiday in Castro.
Castro in DecemberClimate in detail
Year & climate table
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Castro
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Cold 0–8°
- Cool 8–15°
ColdOctober: nights around 5°. The room should be heated.
The coolest nights are in July (4°), the warmest in February (10°). Nights fall below 8 °C on average from April to November, so the room should be heated.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 80 | 20° | 10° | 14.0° | 6.5 h | 9 | 63 |
| FebruaryFeb | 84 | 21° | 10° | 13.8° | 6.7 h | 8 | 56 |
| MarchMar | 70 | 19° | 9° | 13.4° | 4.8 h | 11 | 91 |
| AprilApr | 49 | 16° | 7° | 12.5° | 3.4 h | 14 | 116 |
| MayMay | 30 | 13° | 6° | 12.0° | 2.2 h | 17 | 165 |
| JuneJun | 15 | 11° | 4° | 11.5° | 1.8 h | 19 | 192 |
| JulyJul | 15 | 11° | 4° | 10.9° | 2.2 h | 18 | 174 |
| AugustAug | 18 | 12° | 4° | 10.7° | 2.9 h | 20 | 196 |
| SeptemberSep | 31 | 13° | 4° | 10.7° | 3.8 h | 17 | 133 |
| OctoberOct | 42 | 15° | 5° | 11.3° | 4.4 h | 16 | 117 |
| NovemberNov | 58 | 16° | 7° | 12.2° | 4.9 h | 14 | 99 |
| DecemberDec | 71 | 19° | 9° | 13.1° | 5.6 h | 12 | 78 |
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
42.47° S, 73.77° W · 81 m · America/Santiago
Sea temperature
Sea temperature in Castro
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 10.8 – 11.9 °C
Swimming season: Always below 20 °C
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Castro ranges from 10.7 °C in August to 14.0 °C in January. Even at its warmest the sea stays below 20 °C, so swimming is bracing at best.
In June the sea is even warmer than the afternoon air. The sea temperature varies from year to year: in January, eight out of ten years were between 13.3 and 14.7 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 14.0° | 13.3° | 14.7° | cold |
| FebruaryFeb | 13.8° | 13.1° | 14.5° | cold |
| MarchMar | 13.4° | 12.5° | 14.2° | cold |
| AprilApr | 12.5° | 11.5° | 13.8° | cold |
| MayMay | 12.0° | 11.2° | 13.0° | cold |
| JuneJun | 11.5° | 10.8° | 12.4° | cold |
| JulyJul | 10.9° | 10.1° | 11.5° | cold |
| AugustAug | 10.7° | 10.0° | 11.3° | cold |
| SeptemberSep | 10.7° | 10.2° | 11.3° | cold |
| OctoberOct | 11.3° | 10.8° | 11.9° | cold |
| NovemberNov | 12.2° | 11.5° | 12.9° | cold |
| DecemberDec | 13.1° | 12.4° | 14.0° | cold |
Sunshine
Sunshine hours in Castro
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 4.4 of 13.2 hours of daylight in Castro, 33 % 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 Castro: 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.
In October, Castro has about 16 rainy days with 117 mm of rain in total.
UV index
UV index in Castro
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 7 · highSeek shade around midday; sunscreen SPF 30+, hat and sunglasses.
The sun is strongest in December (UV 9).
Minutes until sunburn in October
- Very fair skin
- about 20 min
- Fair skin
- about 25 min
- Light brown skin
- about 35 min
- Olive skin
- about 45 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 & clouds
Wind and clouds in Castro
How breezy and how cloudy Castro 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.
In October, the wind in Castro typically peaks at 15 km/h during the day: Beaufort 3, gentle breeze.
Breezy months for windsurfing and kiting
The daily breeze rarely reaches Beaufort 4 (20 km/h), so wind sports depend on single windy days.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 68 % of the sky over Castro: mostly cloudy, with about 4.4 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.
Planning a trip to Castro
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Castro 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.
Castro has its best school-holiday weather during the Christmas holidays (score 76) and its weakest during the summer holidays (score 17).
- 55
Easter holidays
Mar – Apr
Fair
- 16 °C by day
- Sea 13 °C
- 3.8 h of sun a day
- 13 rainy days a month
Keep in mind: Frequent rain
- 27
May half-term
May – Jun
Poor
- 13 °C by day
- Sea 12 °C
- 2.1 h of sun a day
- 17 rainy days a month
Keep in mind: Frequent rain
- 17
Summer holidays
Jul – Aug
Poor
- 11 °C by day
- Sea 11 °C
- 2.7 h of sun a day
- 19 rainy days a month
Keep in mind: Frequent rain
- 42
October half-term
Oct
Fair
- 15 °C by day
- Sea 11 °C
- 4.4 h of sun a day
- 16 rainy days a month
Keep in mind: Frequent rain
- 76
Christmas holidays
Dec – Jan
GoodBest holidays
- 19 °C by day
- Sea 14 °C
- 6.1 h of sun a day
- 11 rainy days a month
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 15 h 40 min
- Distance
- 12,600 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: Chile
- Currency
- Chilean Peso (CLP)
- Language
- Spanish
- Sockets
- Type C, L · 220 V
- Traffic
- Drives on the right
- Dialling code
- +56
UK plugs need a travel adapter
Sources: GeoNames (CC BY 4.0) and Wikidata (CC0). Please check details before you travel.
Compare & alternatives
Compare with another place
Castro compared
Put Castro side by side with another destination.
Castro vs Puerto Montt
In October Puerto Montt has the better holiday weather (score 48 vs 42). During the day it is about as warm in Puerto Montt as in Castro. The sea in Puerto Montt is 1 °C warmer. Puerto Montt gets one more hour of sunshine a day.
| in October | Castro | Puerto Montt |
|---|---|---|
| Holiday weather score | 42 | 48 |
| Daytime high | 15° | 15° |
| Sea | 11° | 12° |
| Sunshine | 4 h | 5 h |
| Rainy days | 16 | 16 |
| Best time | Dec – Mar | Dec – Mar |
Through the year
Best places in the country
Chile in October: the best places
In October, Castro ranks 19 of 25 destinations in this country.
- San Pedro de Atacama25°100
- 2Calama25°100
- 3Antofagasta18°16°98
- 4Iquique25°18°97
- 5Valparaíso19°13°95
- 6Viña del Mar19°13°95
- 7Coquimbo18°14°92
- 8La Serena18°14°92
- 19CastroThis page15°11°42
Places nearby
Near Castro
Other destinations close by.
Places with a similar climate
Places with a climate like Castro
Destinations whose weather through the year is closest to Castro's – good alternatives.
Frequently asked questions about Castro
When is the best time to visit Castro?
The best time to visit Castro is from December to March. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Castro?
The sea temperature in Castro ranges from 10.7 °C in August to 14.0 °C in January. Even at its warmest the sea stays below 20 °C, so swimming is bracing at best.
Can you swim in Castro in October?
Only if you don't mind cold water: in October the sea averages just 11.3 °C. Comfortable swimming temperatures are not reached at any time of year.
What is the warmest month in Castro?
February is the warmest month, with average highs of 21 °C and nights around 10 °C. July is the coolest month at 11 °C.
When does it rain most in Castro?
Rain is frequent from April to November; the wettest month is August with 196 mm. The driest month is February with 56 mm.
How many hours of sunshine does Castro get?
Castro gets around 1,490 hours of sunshine a year. The sunniest month is February with 6.7 hours a day; in June there are 1.8 hours a day.
What time zone is Castro in?
Castro is on UTC−3 in January and UTC−4 in July.
How long is the flight from London to Castro?
A nonstop flight from London to Castro takes about 15 h 40 min, for a straight-line distance of about 12,600 km. Most routes need a change of planes, which adds time.
Which school holidays are best for Castro?
Castro has its best school-holiday weather during the Christmas holidays (score 76) and its weakest during the summer holidays (score 17). Holiday ratings (0–100): Easter holidays 55, May half-term 27, summer holidays 17, October half-term 42, Christmas holidays 76.