Los Álamos climate — normals and trends
Los Álamos (Chile) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 11.8 °C and it receives 1,177 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 January (15.0 °C on average) and the coldest is July (9.0 °C). Rainfall peaks in June.
Los Álamos averages 0 frost days, 0 hot days (≥ 30 °C) and 109 rainy days per year.
No statistically significant temperature trend emerges for Los Álamos between 1940 and 2025: over this span, year-to-year swings outweigh the climate signal.
The hottest day of the period reached 26.1 °C (on 9 February 2005) and the coldest 1.1 °C (on 14 June 1967).
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
Los ÁlamosBiobio
- coords
- -37.63°, -73.46°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.8°C
Average daily high
14.4°C
Average daily low
9.4°C
Annual rainfall
1,177mm
Sunshine / day
10.0h
Mean relative humidity
81%
Average peak wind
23.2km/h
Seasonal range
6.0°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
109 d/yr
Annual snowfall
0.1 cm
Average feels-like high
12.5 °C
Average feels-like low
6.4 °C
Average peak gust
41.4 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
17.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
No clear trend over this period
Over a short window, year-to-year swings outweigh the climate signal. Try 86 years.
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
26.1 °C
9 February 2005
Coldest day
1.1 °C
14 June 1967
Wettest day
108 mm
27 May 1953
Windiest day
61.9 km/h
12 June 2000
Strongest gust
124.2 km/h
12 June 2000
Hottest feels-like
29.6 °C
9 February 2005
Coldest feels-like
-4.9 °C
21 July 1974
Snowiest day
2.4 cm
31 August 1955
Sunniest day
14.5 h
4 December 1944
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 | 18.4 °C | +0.3 °C | 17 mm | -2 mm |
| Feb | 18.1 °C | -0.1 °C | 8 mm | -9 mm |
| Mar | 17.4 °C | +0.3 °C | 61 mm | +29 mm |
| Apr | 14.5 °C | -0.5 °C | 94 mm | +15 mm |
| May | 12.9 °C | -0.1 °C | 111 mm | -75 mm |
| Jun | 11.0 °C | -0.5 °C | 173 mm | -59 mm |
| Jul | 11.8 °C | +0.8 °C | 134 mm | -78 mm |
| Aug | 12.3 °C | +1.0 °C | 96 mm | -68 mm |
| Sep | 12.7 °C | +0.6 °C | 142 mm | +45 mm |
| Oct | 14.3 °C | +1.0 °C | 51 mm | -19 mm |
| Nov | 16.1 °C | +1.1 °C | 16 mm | -24 mm |
| Dec | 17.9 °C | +1.2 °C | 21 mm | -10 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 Los Álamos?
Los Álamos has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 11.8 °C and it receives 1,177 mm of precipitation per year.
What is the hottest day ever recorded in Los Álamos?
The hottest day measured in Los Álamos between 1940 and 2025 was 9 February 2005, reaching 26.1 °C.
What is the coldest day in Los Álamos?
The coldest day measured in Los Álamos between 1940 and 2025 was 14 June 1967, at 1.1 °C.
Does it snow in Los Álamos?
Almost never: Los Álamos sees virtually no snow, with about 0 frost days per year.
Has the climate of Los Álamos warmed?
Between 1940 and 2025, no statistically significant temperature trend emerges in Los Álamos.
What is the wettest day in Los Álamos?
The wettest day measured in Los Álamos between 1940 and 2025 was 27 May 1953, with 108 mm of rain in 24 hours.
What was the windiest day in Los Álamos?
The windiest day measured in Los Álamos between 1940 and 2025 was 12 June 2000, with winds reaching 61.9 km/h.
What is the warmest month in Los Álamos?
The warmest month in Los Álamos is January (15.0 °C on average); the coldest is July (9.0 °C).
How much does it rain in Los Álamos?
Los Álamos receives on average 1,177 mm of precipitation per year, spread over about 109 rainy days.
Is it sunny in Los Álamos?
Los Álamos gets on average 10.0 hours of sunshine per day, roughly 3,650 hours per year over 1940-2025.
What is the biggest single-day snowfall in Los Álamos?
The heaviest 24-hour snowfall measured in Los Álamos between 1940 and 2025 was 31 August 1955, with 2.4 cm.
Are there tropical nights in Los Álamos?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Los Álamos.
What was the most extreme apparent temperature in Los Álamos?
In Los Álamos, between 1940 and 2025, the highest apparent temperature reached 29.6 °C on 9 February 2005, and the lowest was -4.9 °C on 21 July 1974.
Compare Los Álamos with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Los Álamos