Puerto Aisén climate — normals and trends
Puerto Aisén (Chile) has a subpolar oceanic climate (Cfc) under the Köppen-Geiger classification. Its mean annual temperature is 5.0 °C and it receives 3,541 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is February (10.3 °C on average) and the coldest is July (0.1 °C). Rainfall peaks in August.
Puerto Aisén averages 115 frost days, 0 hot days (≥ 30 °C) and 257 rainy days per year.
Puerto Aisén has warmed by +2.8 °C between 1940 and 2025, or +0.33 °C per decade. This trend is statistically significant.
The number of frost days there went from about 150 to 80 per year over the period.
The hottest day of the period reached 31.4 °C (on 20 January 2013) and the coldest -16.5 °C (on 30 June 2025).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
Puerto AisénAysén
- coords
- -45.40°, -72.69°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
5.0°C
Average daily high
8.3°C
Average daily low
1.9°C
Annual rainfall
3,541mm
Sunshine / day
6.4h
Mean relative humidity
86%
Average peak wind
8.7km/h
Seasonal range
10.2°C
Frost days (< 0 °C)
115 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
257 d/yr
Annual snowfall
672.5 cm
Average feels-like high
6.2 °C
Average feels-like low
-0.8 °C
Average peak gust
52.0 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.8 °C
since 1940
+0.3 °C per decade · r² = 0.69 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
31.4 °C
20 January 2013
Coldest day
-16.5 °C
30 June 2025
Wettest day
108 mm
17 February 2009
Windiest day
24.5 km/h
12 May 2019
Strongest gust
136.8 km/h
30 July 2000
Hottest feels-like
33.4 °C
20 January 2013
Coldest feels-like
-20.7 °C
30 June 2025
Snowiest day
55.2 cm
1 August 1969
Sunniest day
15.5 h
23 December 1951
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 14.8 °C | +1.0 °C | 161 mm | -98 mm |
| Feb | 13.0 °C | -1.3 °C | 272 mm | +70 mm |
| Mar | 13.0 °C | +0.6 °C | 308 mm | +52 mm |
| Apr | 11.0 °C | +1.7 °C | 211 mm | -84 mm |
| May | 6.0 °C | +0.4 °C | 423 mm | +71 mm |
| Jun | 4.1 °C | +1.4 °C | 304 mm | -44 mm |
| Jul | 3.8 °C | +1.4 °C | 525 mm | +174 mm |
| Aug | 6.4 °C | +2.6 °C | 216 mm | -143 mm |
| Sep | 8.3 °C | +2.7 °C | 341 mm | +49 mm |
| Oct | 8.9 °C | +1.3 °C | 462 mm | +176 mm |
| Nov | 15.2 °C | +5.4 °C | 141 mm | -127 mm |
| Dec | 12.8 °C | +0.6 °C | 237 mm | -37 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Puerto Aisén?
Puerto Aisén has a subpolar oceanic climate (Köppen Cfc). Over 1940-2025, the average annual temperature is 5.0 °C and it receives 3,541 mm of precipitation per year.
What is the hottest day ever recorded in Puerto Aisén?
The hottest day measured in Puerto Aisén between 1940 and 2025 was 20 January 2013, reaching 31.4 °C.
What is the coldest day in Puerto Aisén?
The coldest day measured in Puerto Aisén between 1940 and 2025 was 30 June 2025, at -16.5 °C.
Does it snow in Puerto Aisén?
Yes. Puerto Aisén gets on average 672.5 cm of snow per year and has around 115 frost days.
Has the climate of Puerto Aisén warmed?
Yes: Puerto Aisén warmed by +2.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Puerto Aisén?
The wettest day measured in Puerto Aisén between 1940 and 2025 was 17 February 2009, with 108 mm of rain in 24 hours.
What was the windiest day in Puerto Aisén?
The windiest day measured in Puerto Aisén between 1940 and 2025 was 12 May 2019, with winds reaching 24.5 km/h.
What is the warmest month in Puerto Aisén?
The warmest month in Puerto Aisén is February (10.3 °C on average); the coldest is July (0.1 °C).
How much does it rain in Puerto Aisén?
Puerto Aisén receives on average 3,541 mm of precipitation per year, spread over about 257 rainy days.
Is it sunny in Puerto Aisén?
Puerto Aisén gets on average 6.4 hours of sunshine per day, roughly 2,336 hours per year over 1940-2025.
What is the biggest single-day snowfall in Puerto Aisén?
The heaviest 24-hour snowfall measured in Puerto Aisén between 1940 and 2025 was 1 August 1969, with 55.2 cm.
Are there tropical nights in Puerto Aisén?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Puerto Aisén.
What was the most extreme apparent temperature in Puerto Aisén?
In Puerto Aisén, between 1940 and 2025, the highest apparent temperature reached 33.4 °C on 20 January 2013, and the lowest was -20.7 °C on 30 June 2025.
Compare Puerto Aisén with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Puerto Aisén