Izalco climate — normals and trends

Q: What is the climate of Izalco?

Izalco has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 24.2 °C and it receives 2,047 mm of precipitation per year.

Q: What is the hottest day ever recorded in Izalco?

The hottest day measured in Izalco between 1940 and 2025 was 3 April 2016, reaching 34.7 °C.

Q: What is the coldest day in Izalco?

The coldest day measured in Izalco between 1940 and 2025 was 15 January 1956, at 13.0 °C.

Q: Does it snow in Izalco?

Almost never: Izalco sees virtually no snow, with about 0 frost days per year.

Q: Has the climate of Izalco warmed?

Yes: Izalco warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Izalco?

The wettest day measured in Izalco between 1940 and 2025 was 4 September 1969, with 260 mm of rain in 24 hours.

Q: What was the windiest day in Izalco?

The windiest day measured in Izalco between 1940 and 2025 was 5 February 2009, with winds reaching 35.8 km/h.

Q: What is the warmest month in Izalco?

The warmest month in Izalco is April (25.2 °C on average); the coldest is January (23.5 °C).

Q: How much does it rain in Izalco?

Izalco receives on average 2,047 mm of precipitation per year, spread over about 209 rainy days.

Q: Is it sunny in Izalco?

Izalco gets on average 10.7 hours of sunshine per day, roughly 3,905 hours per year over 1940-2025.

Izalco (El Salvador) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 24.2 °C and it receives 2,047 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 (25.2 °C on average) and the coldest is January (23.5 °C). Rainfall peaks in September.

Izalco averages 0 frost days, 64 hot days (≥ 30 °C) and 209 rainy days per year.

Izalco has warmed by +1.8 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.

The hottest day of the period reached 34.7 °C (on 3 April 2016) and the coldest 13.0 °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

IzalcoSonsonate Department

coords: 13.74°, -89.67°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthAprilColdest monthJanuaryWettest monthSeptemberDriest monthJanuary

Mean daily temperature

24.2°C

Average daily high

28.6°C

Average daily low

21.0°C

Annual rainfall

2,047mm

Sunshine / day

10.7h

Mean relative humidity

79%

Average peak wind

10.5km/h

Seasonal range

1.7°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

64 d/yr

Rainy days (≥ 1 mm)

209 d/yr

Annual snowfall

0.0 cm

Average feels-like high

33.1 °C

Average feels-like low

23.4 °C

Average peak gust

31.9 km/h

Tropical nights (≥ 20 °C)

293 d/yr

Solar radiation

20.4 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.8 °C

since 1940

+0.2 °C per decade · r² = 0.77 · p = < 0.001

19402025

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

34.7 °C

3 April 2016

Coldest day

13.0 °C

15 January 1956

Wettest day

260 mm

4 September 1969

Windiest day

35.8 km/h

5 February 2009

Strongest gust

85.7 km/h

5 February 2009

Hottest feels-like

40.0 °C

15 May 1998

Coldest feels-like

10.9 °C

27 December 1989

Sunniest day

12.1 h

15 July 2025

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	33.0 °C17 April 2025	18.3 °C18 January 2025	25.5 °C	1,935 mm	154
2024	33.0 °C6 April 2024	16.8 °C10 February 2024	25.6 °C	2,504 mm	191
2023	32.8 °C22 March 2023	16.9 °C16 January 2023	25.6 °C	1,879 mm	199
2022	32.8 °C19 February 2022	17.7 °C4 February 2022	25.1 °C	2,559 mm	142
2021	33.2 °C29 March 2021	15.9 °C5 February 2021	25.3 °C	1,932 mm	169
2020	33.4 °C19 February 2020	18.2 °C23 January 2020	25.3 °C	2,433 mm	193
2019	33.4 °C16 March 2019	18.0 °C29 January 2019	25.4 °C	2,069 mm	200
2018	32.5 °C20 April 2018	16.1 °C12 January 2018	25.1 °C	2,170 mm	163
2017	33.1 °C7 April 2017	16.6 °C24 January 2017	25.2 °C	1,998 mm	174
2016	34.7 °C3 April 2016	17.0 °C25 January 2016	25.3 °C	1,580 mm	175
2015	32.8 °C12 March 2015	18.5 °C28 January 2015	25.5 °C	1,832 mm	181
2014	32.3 °C11 April 2014	16.8 °C17 January 2014	25.0 °C	1,912 mm	132
2013	32.7 °C29 March 2013	17.4 °C4 March 2013	24.8 °C	1,905 mm	99
2012	32.9 °C13 March 2012	15.9 °C25 December 2012	24.7 °C	1,697 mm	106
2011	32.1 °C3 April 2011	15.8 °C8 January 2011	24.5 °C	2,589 mm	66
2010	33.9 °C29 March 2010	14.0 °C16 December 2010	24.6 °C	2,828 mm	109
2009	32.4 °C21 April 2009	16.8 °C23 December 2009	24.8 °C	1,705 mm	133
2008	32.3 °C29 April 2008	16.0 °C29 November 2008	24.1 °C	2,544 mm	62
2007	32.0 °C4 March 2007	16.5 °C21 February 2007	24.3 °C	2,172 mm	93
2006	32.0 °C16 March 2006	15.8 °C23 November 2006	24.5 °C	2,007 mm	65
2005	32.1 °C17 April 2005	14.5 °C25 November 2005	24.5 °C	2,526 mm	88
2004	32.2 °C13 April 2004	16.0 °C25 January 2004	24.5 °C	1,932 mm	79
2003	32.0 °C8 March 2003	16.7 °C10 December 2003	24.6 °C	1,955 mm	78
2002	32.9 °C14 May 2002	15.6 °C10 January 2002	24.7 °C	1,670 mm	96
2001	31.8 °C18 April 2001	16.2 °C8 January 2001	24.2 °C	1,572 mm	59
2000	31.8 °C8 April 2000	15.5 °C28 January 2000	24.1 °C	1,778 mm	22
1999	31.5 °C18 April 1999	14.7 °C29 December 1999	23.8 °C	2,416 mm	27
1998	33.1 °C15 May 1998	16.5 °C6 February 1998	24.8 °C	2,207 mm	111
1997	33.1 °C4 May 1997	15.5 °C16 December 1997	24.8 °C	1,660 mm	108
1996	32.3 °C29 March 1996	14.6 °C14 January 1996	24.0 °C	2,415 mm	35
1995	31.7 °C4 March 1995	16.6 °C12 February 1995	24.2 °C	2,718 mm	33
1994	32.2 °C29 March 1994	16.7 °C30 December 1994	24.4 °C	1,549 mm	61
1993	31.9 °C31 July 1993	15.5 °C10 January 1993	24.3 °C	2,096 mm	51
1992	33.3 °C10 May 1992	15.3 °C8 February 1992	24.4 °C	1,843 mm	78
1991	32.3 °C26 February 1991	16.4 °C13 February 1991	24.4 °C	1,760 mm	53
1990	32.5 °C10 April 1990	17.5 °C1 January 1990	24.4 °C	1,839 mm	47
1989	31.4 °C7 April 1989	14.1 °C27 December 1989	24.0 °C	1,997 mm	45
1988	32.3 °C24 March 1988	16.7 °C27 January 1988	24.3 °C	1,983 mm	58
1987	32.4 °C17 May 1987	14.9 °C7 January 1987	24.7 °C	1,613 mm	90
1986	32.1 °C7 April 1986	15.4 °C29 January 1986	24.0 °C	1,546 mm	24
1985	31.2 °C8 March 1985	15.5 °C28 January 1985	23.9 °C	1,946 mm	15
1984	30.9 °C30 March 1984	16.0 °C25 November 1984	23.8 °C	2,056 mm	11
1983	32.3 °C9 May 1983	15.5 °C21 March 1983	24.6 °C	1,815 mm	53
1982	31.7 °C1 April 1982	17.2 °C7 March 1982	24.5 °C	2,022 mm	45
1981	32.0 °C1 April 1981	14.9 °C1 January 1981	24.2 °C	2,104 mm	42
1980	31.7 °C15 March 1980	15.7 °C30 December 1980	24.4 °C	1,856 mm	51
1979	31.6 °C12 April 1979	16.8 °C21 December 1979	24.3 °C	2,173 mm	27
1978	32.9 °C14 May 1978	15.1 °C7 February 1978	24.0 °C	2,187 mm	31
1977	31.0 °C24 April 1977	15.8 °C20 January 1977	24.2 °C	1,633 mm	41
1976	31.0 °C12 March 1976	16.3 °C19 January 1976	23.9 °C	1,695 mm	44
1975	31.7 °C22 April 1975	15.5 °C24 December 1975	23.7 °C	2,289 mm	20
1974	31.9 °C25 April 1974	16.6 °C15 February 1974	23.8 °C	1,765 mm	22
1973	32.5 °C19 February 1973	15.3 °C19 December 1973	24.0 °C	2,294 mm	70
1972	32.3 °C2 April 1972	16.8 °C22 February 1972	24.4 °C	1,834 mm	45
1971	31.5 °C29 April 1971	16.7 °C15 February 1971	23.7 °C	2,134 mm	16
1970	32.9 °C23 March 1970	15.2 °C5 February 1970	23.9 °C	2,303 mm	50
1969	32.6 °C9 May 1969	17.0 °C23 January 1969	24.1 °C	2,838 mm	60
1968	31.6 °C6 April 1968	15.5 °C11 February 1968	23.7 °C	2,098 mm	21
1967	30.9 °C11 March 1967	16.3 °C18 March 1967	24.0 °C	1,545 mm	28
1966	31.2 °C5 March 1966	16.1 °C22 December 1966	23.9 °C	2,104 mm	25
1965	31.4 °C21 March 1965	15.2 °C3 March 1965	23.9 °C	1,890 mm	23
1964	31.4 °C6 March 1964	16.4 °C20 January 1964	23.8 °C	1,720 mm	28
1963	31.4 °C14 April 1963	14.6 °C26 December 1963	23.9 °C	2,083 mm	20
1962	31.5 °C4 April 1962	15.6 °C4 January 1962	23.5 °C	1,896 mm	19
1961	31.8 °C19 April 1961	16.6 °C27 December 1961	23.6 °C	1,990 mm	26
1960	31.6 °C28 March 1960	15.3 °C31 January 1960	23.4 °C	2,426 mm	29
1959	31.3 °C13 March 1959	16.2 °C5 December 1959	23.5 °C	1,843 mm	33
1958	32.2 °C16 April 1958	15.3 °C6 February 1958	24.0 °C	2,186 mm	46
1957	31.8 °C6 May 1957	14.6 °C11 December 1957	23.7 °C	2,055 mm	19
1956	31.5 °C8 March 1956	13.0 °C15 January 1956	23.2 °C	2,101 mm	19
1955	32.6 °C27 March 1955	17.0 °C21 January 1955	23.2 °C	2,288 mm	48
1954	31.8 °C3 April 1954	16.3 °C22 December 1954	23.5 °C	2,241 mm	35
1953	31.6 °C26 March 1953	15.7 °C11 January 1953	24.0 °C	2,103 mm	40
1952	31.4 °C6 April 1952	16.5 °C2 February 1952	23.8 °C	2,025 mm	26
1951	31.5 °C20 March 1951	15.4 °C5 February 1951	23.9 °C	1,967 mm	28
1950	31.2 °C11 April 1950	15.7 °C29 November 1950	23.1 °C	2,717 mm	20
1949	31.8 °C20 March 1949	16.4 °C3 January 1949	23.4 °C	2,277 mm	23
1948	31.5 °C6 April 1948	15.6 °C16 January 1948	23.6 °C	2,383 mm	24
1947	32.6 °C7 April 1947	16.0 °C17 February 1947	23.6 °C	2,258 mm	30
1946	31.5 °C31 March 1946	17.7 °C27 February 1946	23.6 °C	1,810 mm	24
1945	30.5 °C23 February 1945	13.5 °C6 December 1945	23.3 °C	2,398 mm	6
1944	30.8 °C16 April 1944	14.8 °C8 January 1944	23.5 °C	1,682 mm	14
1943	32.3 °C15 April 1943	13.6 °C22 December 1943	23.2 °C	2,142 mm	10
1942	32.7 °C31 March 1942	16.7 °C27 January 1942	23.5 °C	2,234 mm	33
1941	33.1 °C26 April 1941	14.7 °C16 January 1941	24.0 °C	1,599 mm	80
1940	31.5 °C14 March 1940	16.8 °C24 February 1940	23.6 °C	1,682 mm	29

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?

Year

Across the whole year

Average daily high

29.7 °C

+1.1 °C

Hot days (≥ 30 °C)

154 d/yr

+90

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1935 mm

-112 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	30.1 °C	+1.3 °C	7 mm	+1 mm
Feb	30.5 °C	+1.2 °C	21 mm	+14 mm
Mar	30.5 °C	+0.7 °C	24 mm	+3 mm
Apr	30.8 °C	+1.0 °C	42 mm	-25 mm
May	30.0 °C	+1.4 °C	141 mm	-98 mm
Jun	29.0 °C	+1.1 °C	546 mm	+185 mm
Jul	30.3 °C	+1.7 °C	190 mm	-69 mm
Aug	29.5 °C	+1.2 °C	221 mm	-76 mm
Sep	28.9 °C	+1.4 °C	345 mm	-57 mm
Oct	28.7 °C	+1.1 °C	316 mm	+13 mm
Nov	29.3 °C	+1.2 °C	33 mm	-39 mm
Dec	29.4 °C	+0.9 °C	49 mm	+35 mm

The year's extremes

Hottest day

33.0 °C

17 Apr 2025

Coldest day

18.3 °C

18 Jan 2025

Wettest day

75.9 mm

15 Jun 2025

Windiest day

24.5 km/h

25 Jan 2025

Strongest gust

61.2 km/h

25 Jan 2025

Hottest feels-like

38.7 °C

15 Apr 2025

Coldest feels-like

18.7 °C

18 Jan 2025

Sunniest day

12.1 h

15 Jul 2025

What was the weather like that day?

Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.

Date

Frequently asked questions

What is the climate of Izalco?

Izalco has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 24.2 °C and it receives 2,047 mm of precipitation per year.

What is the hottest day ever recorded in Izalco?

The hottest day measured in Izalco between 1940 and 2025 was 3 April 2016, reaching 34.7 °C.

What is the coldest day in Izalco?

The coldest day measured in Izalco between 1940 and 2025 was 15 January 1956, at 13.0 °C.

Does it snow in Izalco?

Almost never: Izalco sees virtually no snow, with about 0 frost days per year.

Has the climate of Izalco warmed?

Yes: Izalco warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Izalco?

The wettest day measured in Izalco between 1940 and 2025 was 4 September 1969, with 260 mm of rain in 24 hours.

What was the windiest day in Izalco?

The windiest day measured in Izalco between 1940 and 2025 was 5 February 2009, with winds reaching 35.8 km/h.

What is the warmest month in Izalco?

The warmest month in Izalco is April (25.2 °C on average); the coldest is January (23.5 °C).

How much does it rain in Izalco?

Izalco receives on average 2,047 mm of precipitation per year, spread over about 209 rainy days.

Is it sunny in Izalco?

Izalco gets on average 10.7 hours of sunshine per day, roughly 3,905 hours per year over 1940-2025.

Are there tropical nights in Izalco?

Yes: Izalco has on average 293 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Izalco?

In Izalco, between 1940 and 2025, the highest apparent temperature reached 40.0 °C on 15 May 1998, and the lowest was 10.9 °C on 27 December 1989.

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