Zacatecoluca climate — normals and trends
Zacatecoluca (El Salvador) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 25.6 °C and it receives 2,014 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 (26.8 °C on average) and the coldest is October (24.8 °C). Rainfall peaks in September.
Zacatecoluca averages 0 frost days, 256 hot days (≥ 30 °C) and 193 rainy days per year.
Zacatecoluca has warmed by +2.0 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.
The hottest day of the period reached 38.7 °C (on 12 April 2024) and the coldest 12.5 °C (on 15 January 1956).
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
ZacatecolucaLa Paz Department
- coords
- 13.51°, -88.87°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.6°C
Average daily high
31.0°C
Average daily low
21.6°C
Annual rainfall
2,014mm
Sunshine / day
10.8h
Mean relative humidity
78%
Average peak wind
9.4km/h
Seasonal range
2.0°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
256 d/yr
Rainy days (≥ 1 mm)
193 d/yr
Annual snowfall
0.0 cm
Average feels-like high
35.7 °C
Average feels-like low
24.9 °C
Average peak gust
30.8 km/h
Tropical nights (≥ 20 °C)
316 d/yr
Solar radiation
20.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.77 · 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
38.7 °C
12 April 2024
Coldest day
12.5 °C
15 January 1956
Wettest day
179 mm
4 September 1969
Windiest day
25.2 km/h
10 January 2010
Strongest gust
68.8 km/h
28 July 1996
Hottest feels-like
42.6 °C
14 May 2016
Coldest feels-like
11.4 °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 | 33.7 °C | +1.7 °C | 11 mm | +7 mm |
| Feb | 34.2 °C | +1.5 °C | 12 mm | +7 mm |
| Mar | 33.6 °C | +0.5 °C | 19 mm | +1 mm |
| Apr | 33.9 °C | +1.2 °C | 60 mm | -7 mm |
| May | 32.9 °C | +1.7 °C | 120 mm | -136 mm |
| Jun | 31.4 °C | +1.5 °C | 471 mm | +125 mm |
| Jul | 32.3 °C | +1.5 °C | 205 mm | -47 mm |
| Aug | 31.3 °C | +1.0 °C | 229 mm | -63 mm |
| Sep | 30.8 °C | +1.5 °C | 331 mm | -45 mm |
| Oct | 30.3 °C | +1.0 °C | 358 mm | +47 mm |
| Nov | 31.7 °C | +1.7 °C | 21 mm | -53 mm |
| Dec | 32.3 °C | +1.2 °C | 36 mm | +24 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 Zacatecoluca?
Zacatecoluca has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 25.6 °C and it receives 2,014 mm of precipitation per year.
What is the hottest day ever recorded in Zacatecoluca?
The hottest day measured in Zacatecoluca between 1940 and 2025 was 12 April 2024, reaching 38.7 °C.
What is the coldest day in Zacatecoluca?
The coldest day measured in Zacatecoluca between 1940 and 2025 was 15 January 1956, at 12.5 °C.
Does it snow in Zacatecoluca?
Almost never: Zacatecoluca sees virtually no snow, with about 0 frost days per year.
Has the climate of Zacatecoluca warmed?
Yes: Zacatecoluca warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Zacatecoluca?
The wettest day measured in Zacatecoluca between 1940 and 2025 was 4 September 1969, with 179 mm of rain in 24 hours.
What was the windiest day in Zacatecoluca?
The windiest day measured in Zacatecoluca between 1940 and 2025 was 10 January 2010, with winds reaching 25.2 km/h.
What is the warmest month in Zacatecoluca?
The warmest month in Zacatecoluca is April (26.8 °C on average); the coldest is October (24.8 °C).
How much does it rain in Zacatecoluca?
Zacatecoluca receives on average 2,014 mm of precipitation per year, spread over about 193 rainy days.
Is it sunny in Zacatecoluca?
Zacatecoluca gets on average 10.8 hours of sunshine per day, roughly 3,942 hours per year over 1940-2025.
Are there tropical nights in Zacatecoluca?
Yes: Zacatecoluca has on average 316 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Zacatecoluca?
In Zacatecoluca, between 1940 and 2025, the highest apparent temperature reached 42.6 °C on 14 May 2016, and the lowest was 11.4 °C on 6 December 1945.
Compare Zacatecoluca with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Zacatecoluca