Chalatenango climate — normals and trends
Chalatenango (El Salvador) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 25.2 °C and it receives 1,018 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 April (27.1 °C on average) and the coldest is December (24.1 °C). Rainfall peaks in September.
Chalatenango averages 0 frost days, 252 hot days (≥ 30 °C) and 147 rainy days per year.
Chalatenango has warmed by +2.2 °C between 1940 and 2025, or +0.26 °C per decade. This trend is statistically significant.
The hottest day of the period reached 39.3 °C (on 5 March 2020) and the coldest 8.8 °C (on 6 December 1945).
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
ChalatenangoChalatenango Department
- coords
- 14.04°, -88.94°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.2°C
Average daily high
31.2°C
Average daily low
20.7°C
Annual rainfall
1,018mm
Sunshine / day
10.5h
Mean relative humidity
67%
Average peak wind
9.3km/h
Seasonal range
3.0°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
252 d/yr
Rainy days (≥ 1 mm)
147 d/yr
Annual snowfall
0.0 cm
Average feels-like high
33.9 °C
Average feels-like low
22.9 °C
Average peak gust
28.7 km/h
Tropical nights (≥ 20 °C)
262 d/yr
Solar radiation
19.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.2 °C
since 1940
+0.3 °C per decade · r² = 0.70 · 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
39.3 °C
5 March 2020
Coldest day
8.8 °C
6 December 1945
Wettest day
175 mm
4 September 1969
Windiest day
30.4 km/h
14 January 1948
Strongest gust
80.3 km/h
14 January 1948
Hottest feels-like
41.7 °C
6 April 2024
Coldest feels-like
7.1 °C
6 December 1945
Sunniest day
12.3 h
18 May 1998
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 | 32.5 °C | +1.5 °C | 2 mm | +1 mm |
| Feb | 34.2 °C | +1.9 °C | 1 mm | -0 mm |
| Mar | 34.9 °C | +1.5 °C | 6 mm | +0 mm |
| Apr | 34.3 °C | +0.6 °C | 34 mm | +7 mm |
| May | 34.1 °C | +2.0 °C | 53 mm | -66 mm |
| Jun | 31.4 °C | +1.4 °C | 246 mm | +45 mm |
| Jul | 33.7 °C | +2.6 °C | 89 mm | -40 mm |
| Aug | 34.3 °C | +3.1 °C | 79 mm | -62 mm |
| Sep | 32.1 °C | +2.4 °C | 166 mm | -47 mm |
| Oct | 30.6 °C | +1.2 °C | 177 mm | +30 mm |
| Nov | 31.9 °C | +2.1 °C | 12 mm | -16 mm |
| Dec | 32.4 °C | +2.0 °C | 18 mm | +14 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 Chalatenango?
Chalatenango has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 25.2 °C and it receives 1,018 mm of precipitation per year.
What is the hottest day ever recorded in Chalatenango?
The hottest day measured in Chalatenango between 1940 and 2025 was 5 March 2020, reaching 39.3 °C.
What is the coldest day in Chalatenango?
The coldest day measured in Chalatenango between 1940 and 2025 was 6 December 1945, at 8.8 °C.
Does it snow in Chalatenango?
Almost never: Chalatenango sees virtually no snow, with about 0 frost days per year.
Has the climate of Chalatenango warmed?
Yes: Chalatenango warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Chalatenango?
The wettest day measured in Chalatenango between 1940 and 2025 was 4 September 1969, with 175 mm of rain in 24 hours.
What was the windiest day in Chalatenango?
The windiest day measured in Chalatenango between 1940 and 2025 was 14 January 1948, with winds reaching 30.4 km/h.
What is the warmest month in Chalatenango?
The warmest month in Chalatenango is April (27.1 °C on average); the coldest is December (24.1 °C).
How much does it rain in Chalatenango?
Chalatenango receives on average 1,018 mm of precipitation per year, spread over about 147 rainy days.
Is it sunny in Chalatenango?
Chalatenango gets on average 10.5 hours of sunshine per day, roughly 3,833 hours per year over 1940-2025.
Are there tropical nights in Chalatenango?
Yes: Chalatenango has on average 262 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Chalatenango?
In Chalatenango, between 1940 and 2025, the highest apparent temperature reached 41.7 °C on 6 April 2024, and the lowest was 7.1 °C on 6 December 1945.
Compare Chalatenango with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Chalatenango