Santiago de María climate — normals and trends
Santiago de María (El Salvador) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 26.7 °C and it receives 1,720 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 (28.5 °C on average) and the coldest is October (25.6 °C). Rainfall peaks in September.
Santiago de María averages 0 frost days, 313 hot days (≥ 30 °C) and 172 rainy days per year.
Santiago de María has warmed by +2.1 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.
The hottest day of the period reached 40.4 °C (on 14 April 2024) and the coldest 12.0 °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
Santiago de MaríaUsulutan
- coords
- 13.48°, -88.47°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.7°C
Average daily high
32.4°C
Average daily low
22.3°C
Annual rainfall
1,720mm
Sunshine / day
10.9h
Mean relative humidity
74%
Average peak wind
9.1km/h
Seasonal range
2.9°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
313 d/yr
Rainy days (≥ 1 mm)
172 d/yr
Annual snowfall
0.0 cm
Average feels-like high
37.1 °C
Average feels-like low
26.0 °C
Average peak gust
29.1 km/h
Tropical nights (≥ 20 °C)
335 d/yr
Solar radiation
21.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.1 °C
since 1940
+0.2 °C per decade · r² = 0.74 · 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
40.4 °C
14 April 2024
Coldest day
12.0 °C
6 December 1945
Wettest day
153 mm
17 November 2024
Windiest day
24.9 km/h
10 January 2010
Strongest gust
66.6 km/h
28 July 1996
Hottest feels-like
44.6 °C
17 May 2020
Coldest feels-like
11.0 °C
6 December 1945
Sunniest day
12.3 h
7 June 1946
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 | 35.0 °C | +1.6 °C | 5 mm | +3 mm |
| Feb | 35.9 °C | +1.6 °C | 4 mm | +2 mm |
| Mar | 35.6 °C | +0.7 °C | 9 mm | -1 mm |
| Apr | 36.2 °C | +1.5 °C | 21 mm | -21 mm |
| May | 35.3 °C | +2.4 °C | 66 mm | -135 mm |
| Jun | 32.8 °C | +1.7 °C | 384 mm | +79 mm |
| Jul | 33.8 °C | +1.8 °C | 163 mm | -52 mm |
| Aug | 33.2 °C | +1.6 °C | 164 mm | -91 mm |
| Sep | 32.1 °C | +1.6 °C | 299 mm | -41 mm |
| Oct | 31.3 °C | +1.1 °C | 319 mm | +41 mm |
| Nov | 32.6 °C | +1.6 °C | 16 mm | -47 mm |
| Dec | 33.5 °C | +1.1 °C | 28 mm | +19 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 Santiago de María?
Santiago de María has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 26.7 °C and it receives 1,720 mm of precipitation per year.
What is the hottest day ever recorded in Santiago de María?
The hottest day measured in Santiago de María between 1940 and 2025 was 14 April 2024, reaching 40.4 °C.
What is the coldest day in Santiago de María?
The coldest day measured in Santiago de María between 1940 and 2025 was 6 December 1945, at 12.0 °C.
Does it snow in Santiago de María?
Almost never: Santiago de María sees virtually no snow, with about 0 frost days per year.
Has the climate of Santiago de María warmed?
Yes: Santiago de María warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Santiago de María?
The wettest day measured in Santiago de María between 1940 and 2025 was 17 November 2024, with 153 mm of rain in 24 hours.
What was the windiest day in Santiago de María?
The windiest day measured in Santiago de María between 1940 and 2025 was 10 January 2010, with winds reaching 24.9 km/h.
What is the warmest month in Santiago de María?
The warmest month in Santiago de María is April (28.5 °C on average); the coldest is October (25.6 °C).
How much does it rain in Santiago de María?
Santiago de María receives on average 1,720 mm of precipitation per year, spread over about 172 rainy days.
Is it sunny in Santiago de María?
Santiago de María gets on average 10.9 hours of sunshine per day, roughly 3,979 hours per year over 1940-2025.
Are there tropical nights in Santiago de María?
Yes: Santiago de María has on average 335 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Santiago de María?
In Santiago de María, between 1940 and 2025, the highest apparent temperature reached 44.6 °C on 17 May 2020, and the lowest was 11.0 °C on 6 December 1945.
Compare Santiago de María with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Santiago de María