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Monthly climate in Izalco, El Salvador

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Izalco features a tropical savanna climate (Aw). Temperatures typically range between 24 °C (76 °F) and 26 °C (79 °F) through the year, but rarely can drop to 16 °C (61 °F) or can rise to as high as 33 °C (92 °F). The average annual precipitation amounts to about 2182 mm (85.9 inches) and receives 206 rainy days on the 1 mm (0.04 inches) threshold annually. Izalco enjoys an average of 3649 hours of sunshine throughout the year, and daylight varies from 11 hours 18 minutes to 12 hours 54 minutes per day.

Monthly average temperatures in Izalco, El Salvador

The warmest months in Izalco are March, April and July, with daily mean temperatures ranging from 26 to 26 °C (79 - 79 °F) throughout the day. The coldest temperatures usually occur in January, October and December, when daily mean temperatures range from 24 to 25 °C (76 - 77 °F) throughout the day. On average each year, Izalco experiences 326 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Izalco. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum32°C
(91°F)		33°C
(92°F)		33°C
(92°F)		33°C
(92°F)		32°C
(90°F)		32°C
(91°F)		32°C
(90°F)		32°C
(90°F)		31°C
(88°F)		31°C
(89°F)		32°C
(89°F)		32°C
(89°F)
Mean maximum31°C
(89°F)		32°C
(91°F)		33°C
(91°F)		33°C
(91°F)		32°C
(89°F)		31°C
(87°F)		32°C
(89°F)		31°C
(89°F)		31°C
(88°F)		31°C
(88°F)		31°C
(88°F)		31°C
(89°F)
Average high30°C
(86°F)		31°C
(87°F)		31°C
(88°F)		31°C
(88°F)		30°C
(86°F)		29°C
(84°F)		30°C
(86°F)		29°C
(85°F)		29°C
(84°F)		29°C
(84°F)		30°C
(86°F)		30°C
(86°F)
Daily mean24°C
(76°F)		25°C
(77°F)		26°C
(79°F)		26°C
(79°F)		26°C
(79°F)		25°C
(78°F)		26°C
(79°F)		25°C
(78°F)		25°C
(77°F)		25°C
(77°F)		25°C
(77°F)		25°C
(76°F)
Average low20°C
(69°F)		21°C
(70°F)		21°C
(71°F)		22°C
(72°F)		23°C
(73°F)		22°C
(73°F)		22°C
(73°F)		22°C
(72°F)		22°C
(72°F)		22°C
(72°F)		21°C
(71°F)		21°C
(69°F)
Mean minimum18°C
(64°F)		18°C
(65°F)		19°C
(66°F)		20°C
(69°F)		21°C
(70°F)		22°C
(71°F)		21°C
(70°F)		21°C
(70°F)		21°C
(70°F)		21°C
(70°F)		20°C
(68°F)		18°C
(65°F)
Minimum16°C
(61°F)		16°C
(61°F)		18°C
(65°F)		20°C
(67°F)		21°C
(69°F)		21°C
(70°F)		21°C
(70°F)		21°C
(69°F)		21°C
(70°F)		20°C
(68°F)		18°C
(65°F)		17°C
(63°F)

Compare climate in Izalco with other places

Compare temperature, precipitation, sunshine, UV index in Izalco, El Salvador with other places around the world.

Monthly average precipitation in Izalco, El Salvador

Izalco usually has the most precipitation in June, September and October, with an average of 28 rainy days and 383 mm (15.1 inches) of precipitation per month. The driest months in Izalco are January, February and December. On average, 8 mm (0.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Izalco. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)7 (0.3)7 (0.3)14 (0.6)70 (2.8)310 (12.2)370 (14.6)208 (8.2)331 (13.0)391 (15.4)389 (15.3)73 (2.9)11 (0.4)
Average precipitation days (≥ 1 mm)12415282826283028133

Monthly sunshine hours in Izalco, El Salvador

The sunniest months in Izalco are March, July and December, when the sun shines an average of 10 hours 31 minutes a day. Least sunny months in Izalco: January, June and October receive an average of 9 hours 1 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Izalco. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours261291327318312282326310296286308325
Mean daily daylight hours11h 24m11h 41m12h 3m12h 26m12h 45m12h 54m12h 49m12h 32m12h 10m11h 47m11h 28m11h 18m

Solar UV radiation in Izalco, El Salvador

Izalco experiences the highest level of ultraviolet (UV) radiation in March, April and May, when the maximum UV index can reach values of 14 - 14, which corresponds to the Extreme category of sun exposure. January, November and December are in the Very High / Extreme exposure category. In these months, the maximum values of the UV index do not exceed 11. For more detailed information, check out our hourly Izalco UV Index data.

Average daily maximum UV levels by month for Izalco. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)11121414141413131312109