Castro in Winter
In winter (June, July and August), Castro sees average daytime highs around 10°C and overnight lows near 4°C, with 562 mm of rain over about 57 wet days across the season. It is the coldest season of the year and the wettest season of the year.
Across winter, daytime highs hold fairly steady around 10°C. The sky is clear or mostly clear about 12% of the time across winter, and the air most often feels dry.
Winter is Castro's weakest season of the year to visit on our travel score. For the whole year in context, see Castro's year-round climate.
- Avg daytime high
- 10°C
- coldest season of the year
- Avg overnight low
- 4°C
- Rainfall
- 562 mm
- 57 wet days
- Avg wind
- 11 km/h
- Travel score
- 1.9
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Castro in Winter
Across winter, daytime highs hold fairly steady around 10°C.
A typical winter day in Castro reaches about 10°C and drops to 4°C overnight. The warmest of the three months is August, the coolest July.
Castro weather by month
How the three winter months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 20° / 10° | 63 | 9.8 | 14.8 | 6.2 |
| Feb | 20° / 10° | 56 | 8.3 | 13.7 | 6.4 |
| Mar | 18° / 9° | 86 | 11.5 | 12.4 | 5.6 |
| Apr | 15° / 7° | 112 | 13.6 | 10.9 | 4.0 |
| May | 12° / 6° | 172 | 17.3 | 9.6 | 2.7 |
| Jun | 10° / 5° | 192 | 19.3 | 8.9 | 1.8 |
| Jul | 10° / 4° | 174 | 17.9 | 9.2 | 1.8 |
| Aug | 11° / 4° | 196 | 19.9 | 10.3 | 2.0 |
| Sep | 12° / 5° | 130 | 16.2 | 11.7 | 2.8 |
| Oct | 14° / 6° | 124 | 16.3 | 13.2 | 3.5 |
| Nov | 16° / 7° | 98 | 13.4 | 14.4 | 4.4 |
| Dec | 18° / 9° | 82 | 12.6 | 15.1 | 5.4 |
Cloud cover in Winter
The sky is clear or mostly clear about 12% of the time across winter.
Chance of precipitation in Winter
Castro gets around 562 mm of rain over 57 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 11 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 9 h 06 min in early June to 10 h 54 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 1.5 kWh/m².
Is winter a good time to visit Castro?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a weaker month for outdoor sightseeing in Castro.
What to pack for Castro in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Castro sees daytime highs around 10°C and nights near 4°C. Pack a warm layer and rain gear. About 57 days see rain.
Sea temperature near Castro in Winter
The nearest coast averages about 11°C across winter — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 31 km away) is warmest in January at about 14°C and coldest in August near 11°C.
The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 14 | 14 | 14 | 13 | 12 | 12 | 11 | 11 | 11 | 11 | 12 | 13 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 14 | Bracing |
| Feb | 14 | Bracing |
| Mar | 14 | Bracing |
| Apr | 13 | Bracing |
| May | 12 | Bracing |
| Jun | 12 | Bracing |
| Jul | 11 | Bracing |
| Aug | 11 | Bracing |
| Sep | 11 | Bracing |
| Oct | 11 | Bracing |
| Nov | 12 | Bracing |
| Dec | 13 | Bracing |
UV index in Castro in Winter
Clear-sky midday UV across winter averages around 2. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Castro peaks around December 23 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 11 | 11 | 7 | 4 | 2 | 1 | 2 | 2 | 4 | 7 | 8 | 12 |
| Level | Extreme | Extreme | High | Moderate | Moderate | Low | Low | Moderate | Moderate | High | Very high | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 11 | Extreme |
| Feb | 11 | Extreme |
| Mar | 7 | High |
| Apr | 4 | Moderate |
| May | 2 | Moderate |
| Jun | 1 | Low |
| Jul | 2 | Low |
| Aug | 2 | Moderate |
| Sep | 4 | Moderate |
| Oct | 7 | High |
| Nov | 8 | Very high |
| Dec | 12 | Extreme |
Where is Castro?
Castro sits at 42.5°S, 73.8°W, 81 m above sea level, in Chile. The nearest listed city is Ancud, 67 km away.
Topography around Castro
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Castro.
Within 3 km, the terrain around Castro has significant variations in elevation — a maximum elevation change of 306 m around an average of 69 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 835 m; within 80 km, large variations in elevation — a maximum elevation change of 847 m.
The land around Castro is covered by trees (39%), water (27%) and grassland (20%) within 3 km, trees (54%) and grassland (25%) within 16 km, and water (58%) and trees (34%) within 80 km.
Chile travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / F / L
- 220 V · 50 Hz
- Prices
- ≈ 48% of US
- price level, 2025
- GDP per capita
- $17,995
- 2025
- Happiness
- 6.3 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 6.3
- per 100k, 2023
- Road deaths
- 14.9
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Moderate
- EF EPI 517
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Castro (-42.4721°, -73.7732°, elevation 81 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.