SeasonMapCastro weather in August
Chile
August in Castro: cool, soaked, with clean air — a gamble, with 20 rainy days.
#10 of 12 months in Castro · #1139 of 1383 destinations to visit in August · comfort 57/100 (tier D)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Castro in August
No notes yet. Open Castro on the map to add the first one.
Castro climate normals — August
| Daytime high | 10°C / 51°F | 🙂 cool |
|---|---|---|
| Nighttime low | 5°C / 41°F | |
| Sea temperature | 9°C / 49°F | 🥶 cold sea |
| Rainfall | 168 mm / 6.6 in | ⛈ soaked |
| Rainy days | 20 days | |
| Humidity | 87% | 💦 very humid |
| Dew point | 5°C / 41°F | |
| Sunshine | 5.9 h/day | |
| Daylight | 10.5 h | |
| Wind | 17 km/h / 10 mph | |
| Air quality (US AQI) | 26 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Castro in August
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Quietone of its worst months for weather(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Castro's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Toughest weatherCastro's weather peaks December–February.
Best weatherFair weatherToughest weather
What's on in Castro in August
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Winter shutdown
1 May – 15 Sep · usuallyOff-season shutdownClosuresThe rain is near-constant from May, the excursion boats stop and a fair share of the waterfront closes. What stays open is serving the island rather than visitors, and it costs half as much.
Nearby, and something's on
Within 300 km of Castro — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Castro?
Castro in August — FAQ
- Is August a good time to visit Castro?
- August in Castro: cool, soaked, with clean air — a gamble, with 20 rainy days. It ranks #10 of 12 months for Castro on SeasonMap's comfort score (57/100).
- What is the weather like in Castro in August?
- In August, Castro averages a daily high of 10.4°C and a low of 4.9°C, with about 167.5 mm of rain over roughly 20.2 rainy days.
- What is the air quality in Castro in August?
- Castro has a mean US Air Quality Index of about 26 in August.
Other months in Castro
Compare Castro in August
Warmer or cooler than Castro in August
Similar destinations in South America — August
Within 300 km: San Carlos de Bariloche's Fiesta Nacional de la Nieve on 14–17 Aug.