Castro weather in May

May in Castro: cool, rainy, with clean air — a good time to visit.

Updated September 2026 · climate normals from ERA5 reanalysis

Castro🇨🇱 Chile · Andean Lakes District · City61
  1. 90Jan
  2. 92Feb
  3. 81Mar
  4. 69Apr
  5. 61May
  6. 51Jun
  7. 53Jul
  8. 56Aug
  9. 65Sep
  10. 74Oct
  11. 79Nov
  12. 86Dec

#9 of 12 months in Castro · #1161 of 1413 destinations to visit in May · comfort 61/100 (tier C)

Days
12°C
Nights
7°C
Wet days
16
Sun
5.5 h
Humidity
89%
Daylight
10 h
Castro, Chile
Photo: Joanna · CC BY 2.0

Traveller notes on Castro in May

Other months in Castro

Chile forum threads are blunt that August is deep winter in the south, and the farther south you go the colder and rainier it gets - Chiloé in general and Castro specifically were flagged as not the best pick for a winter visit compared to central Chile. Experiences reported varied widely though: one visitor described an excellent August/September stretch with clear skies for exploring lakes, glaciers and waterfalls, while another reported rain roughly half the time in Castro and found the mood in town noticeably subdued, possibly weather-related. The consistent thread across both takes: come with flexible plans and real rain gear, since which experience you get seems to depend heavily on the specific week.
ChiloeIslandRegular · August · 1 month ago · Read more on Tripadvisor ↗
Forum posters describe Chiloe's weather as genuinely changeable regardless of season - hot and sunny one stretch, cold, rainy and stormy the next, sometimes within the same visit. Posters are candid the experience of Chiloe hinges heavily on the weather cooperating, with a rained-out stay considered a real letdown by some travelers given how much of the appeal is outdoor scenery and hiking. February sits at the height of Chile's summer vacation season, so posters flag genuinely heavier crowds and fuller accommodation as the main practical downside of this specific month, alongside the ever-present weather uncertainty. Castro itself, known for its colorful palafito stilt houses, is consistently named as a solid base for exploring the island's west-coast hiking trails within about an hour's drive.
Tripadvisor community · February · 1 month ago · Read more on Tripadvisor ↗

Add your own note from Castro's card on the map.

Castro climate normals — May

Daytime high12°C / 54°F🙂 cool
Nighttime low7°C / 44°F
Feels like (high)11°C / 52°F
Sea temperature11°C / 51°F🥶 cold sea
Rainfall147 mm / 5.8 in🌧 rainy
Rainy days16 days
Humidity89%💦 very humid
Dew point7°C / 45°F
Sunshine5.5 h/day
Daylight9.7 h
Wind15 km/h / 9 mph
Air quality (US AQI)22🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Castro in May

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.

Shoulder seasonan ordinary month(estimated)

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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).

Fair weatherCastro's weather peaks December–February.

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Best weatherFair weatherToughest weather

What's on in Castro in May

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Season

    Winter shutdown

    1 May – 15 Sep · usuallyOff-season shutdownClosures

    The 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.

What's on around the world in May →

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?

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Castro in May — FAQ

Is May a good time to visit Castro?
May in Castro: cool, rainy, with clean air — a good time to visit. It ranks #9 of 12 months for Castro on SeasonMap's comfort score (61/100).
What is the weather like in Castro in May?
In May, Castro averages a daily high of 12.4°C and a low of 6.6°C, with about 146.8 mm of rain over roughly 16 rainy days.
What is the air quality in Castro in May?
Castro has a mean US Air Quality Index of about 22 in May.

Within 300 km: San Carlos de Bariloche's Lenga forests turning around 1 Apr – 10 May.