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Monthly climate in San Miguel, El Salvador

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification San Miguel features a tropical savanna climate (Aw). Temperatures typically range between 26 °C (80 °F) and 30 °C (86 °F) through the year, but rarely can drop to 18 °C (64 °F) or can rise to as high as 40 °C (104 °F). The average annual precipitation amounts to about 1885 mm (74.2 inches) and receives 164 rainy days on the 1 mm (0.04 inches) threshold annually. San Miguel enjoys an average of 3685 hours of sunshine throughout the year, and daylight varies from 11 hours 19 minutes to 12 hours 53 minutes per day.

Monthly average temperatures in San Miguel, El Salvador

The warmest months in San Miguel are February, March and April, with daily mean temperatures ranging from 29 to 30 °C (84 - 86 °F) throughout the day. The coldest temperatures usually occur in October, November and December, when daily mean temperatures range from 26 to 27 °C (80 - 80 °F) throughout the day. On average each year, San Miguel experiences 329 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 San Miguel. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum37°C
(99°F)		40°C
(104°F)		39°C
(102°F)		39°C
(103°F)		39°C
(102°F)		36°C
(98°F)		38°C
(100°F)		38°C
(101°F)		36°C
(97°F)		34°C
(93°F)		34°C
(94°F)		36°C
(98°F)
Mean maximum37°C
(98°F)		38°C
(101°F)		39°C
(102°F)		39°C
(102°F)		37°C
(98°F)		35°C
(94°F)		36°C
(97°F)		36°C
(97°F)		34°C
(94°F)		33°C
(92°F)		34°C
(93°F)		35°C
(96°F)
Average high34°C
(94°F)		36°C
(96°F)		37°C
(98°F)		36°C
(97°F)		33°C
(93°F)		32°C
(91°F)		34°C
(94°F)		33°C
(92°F)		32°C
(90°F)		31°C
(88°F)		32°C
(90°F)		33°C
(92°F)
Daily mean28°C
(82°F)		29°C
(84°F)		30°C
(86°F)		30°C
(86°F)		28°C
(83°F)		27°C
(81°F)		28°C
(83°F)		28°C
(82°F)		27°C
(81°F)		26°C
(80°F)		26°C
(80°F)		27°C
(80°F)
Average low22°C
(71°F)		22°C
(72°F)		24°C
(75°F)		25°C
(77°F)		24°C
(76°F)		23°C
(74°F)		23°C
(74°F)		23°C
(74°F)		23°C
(74°F)		23°C
(73°F)		22°C
(72°F)		21°C
(70°F)
Mean minimum19°C
(67°F)		20°C
(68°F)		21°C
(70°F)		23°C
(73°F)		22°C
(73°F)		22°C
(72°F)		22°C
(71°F)		22°C
(71°F)		22°C
(71°F)		22°C
(71°F)		20°C
(68°F)		18°C
(65°F)
Minimum18°C
(65°F)		18°C
(65°F)		20°C
(69°F)		22°C
(72°F)		22°C
(72°F)		22°C
(71°F)		21°C
(70°F)		21°C
(70°F)		21°C
(71°F)		21°C
(70°F)		18°C
(65°F)		18°C
(64°F)

Compare climate in San Miguel with other places

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

Monthly average precipitation in San Miguel, El Salvador

San Miguel usually has the most precipitation in June, August and October, with an average of 24 rainy days and 345 mm (13.6 inches) of precipitation per month. The driest months in San Miguel are January, February and December. On average, 3 mm (0.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in San Miguel. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)1 (0.0)2 (0.1)5 (0.2)40 (1.6)294 (11.6)347 (13.6)131 (5.2)316 (12.4)300 (11.8)371 (14.6)73 (2.9)5 (0.2)
Average precipitation days (≥ 1 mm)0001025241722272892

Monthly sunshine hours in San Miguel, El Salvador

The sunniest months in San Miguel are March, July and December, when the sun shines an average of 10 hours 36 minutes a day. Least sunny months in San Miguel: January, June and October receive an average of 9 hours 10 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in San Miguel. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours263293328318314290331317302291306325
Mean daily daylight hours11h 25m11h 41m12h 3m12h 25m12h 44m12h 53m12h 48m12h 32m12h 10m11h 48m11h 29m11h 19m

Solar UV radiation in San Miguel, El Salvador

San Miguel 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 San Miguel UV Index data.

Average daily maximum UV levels by month for San Miguel. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)11121414141413131313109