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Monthly climate in San Alejandro, Peru

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification San Alejandro features a tropical rainforest climate (Af). Temperatures typically range between 25 °C (77 °F) and 27 °C (81 °F) through the year, but rarely can drop to 14 °C (58 °F) or can rise to as high as 38 °C (101 °F). The average annual precipitation amounts to about 2754 mm (108.4 inches) and receives 241 rainy days on the 1 mm (0.04 inches) threshold annually. San Alejandro enjoys an average of 3279 hours of sunshine throughout the year, and daylight varies from 11 hours 36 minutes to 12 hours 37 minutes per day.

Monthly average temperatures in San Alejandro, Peru

The warmest months in San Alejandro are September, October and November, with daily mean temperatures ranging from 26 to 27 °C (79 - 81 °F) throughout the day. The coldest temperatures usually occur in May, June and July, when daily mean temperatures range from 25 to 25 °C (77 - 78 °F) throughout the day. On average each year, San Alejandro experiences 322 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 Alejandro. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum35°C
(96°F)		35°C
(95°F)		35°C
(95°F)		35°C
(94°F)		34°C
(94°F)		34°C
(93°F)		35°C
(96°F)		38°C
(100°F)		38°C
(101°F)		38°C
(100°F)		38°C
(100°F)		35°C
(96°F)
Mean maximum34°C
(94°F)		34°C
(94°F)		34°C
(94°F)		34°C
(93°F)		33°C
(92°F)		32°C
(91°F)		34°C
(93°F)		36°C
(98°F)		37°C
(99°F)		36°C
(98°F)		35°C
(95°F)		34°C
(94°F)
Average high30°C
(87°F)		31°C
(88°F)		31°C
(87°F)		31°C
(88°F)		31°C
(87°F)		30°C
(87°F)		31°C
(88°F)		33°C
(91°F)		33°C
(92°F)		32°C
(89°F)		31°C
(88°F)		31°C
(88°F)
Daily mean26°C
(79°F)		26°C
(79°F)		26°C
(78°F)		26°C
(78°F)		25°C
(78°F)		25°C
(77°F)		25°C
(77°F)		26°C
(79°F)		27°C
(81°F)		26°C
(80°F)		26°C
(79°F)		26°C
(79°F)
Average low22°C
(73°F)		22°C
(73°F)		22°C
(72°F)		22°C
(72°F)		22°C
(71°F)		21°C
(70°F)		20°C
(69°F)		21°C
(70°F)		22°C
(72°F)		22°C
(73°F)		23°C
(73°F)		22°C
(73°F)
Mean minimum21°C
(70°F)		21°C
(70°F)		21°C
(69°F)		20°C
(68°F)		19°C
(66°F)		19°C
(66°F)		17°C
(63°F)		17°C
(63°F)		20°C
(69°F)		21°C
(70°F)		21°C
(71°F)		21°C
(71°F)
Minimum21°C
(69°F)		21°C
(69°F)		19°C
(67°F)		19°C
(66°F)		17°C
(63°F)		18°C
(64°F)		16°C
(61°F)		14°C
(58°F)		19°C
(66°F)		20°C
(68°F)		21°C
(70°F)		21°C
(70°F)

Compare climate in San Alejandro with other places

Compare temperature, precipitation, sunshine, UV index in San Alejandro, Peru with other places around the world.

Monthly average precipitation in San Alejandro, Peru

San Alejandro usually has the most precipitation in February, March and November, with an average of 26 rainy days and 370 mm (14.6 inches) of precipitation per month. The driest months in San Alejandro are June, July and August. On average, 87 mm (3.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in San Alejandro. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)304 (12.0)364 (14.3)406 (16.0)240 (9.4)178 (7.0)99 (3.9)86 (3.4)76 (3.0)117 (4.6)236 (9.3)341 (13.4)308 (12.1)
Average precipitation days (≥ 1 mm)242627231813101015222528

Monthly sunshine hours in San Alejandro, Peru

The sunniest months in San Alejandro are May, July and August, when the sun shines an average of 10 hours 10 minutes a day. Least sunny months in San Alejandro: January, February and November receive an average of 7 hours 33 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in San Alejandro. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours206233241259305293319321287286239283
Mean daily daylight hours12h 33m12h 21m12h 7m11h 53m11h 41m11h 36m11h 39m11h 49m12h 2m12h 17m12h 30m12h 37m

Solar UV radiation in San Alejandro, Peru

San Alejandro experiences the highest level of ultraviolet (UV) radiation in February, March and April, when the maximum UV index can reach values of 16 - 16, which corresponds to the Extreme category of sun exposure. May, June and July are in the Extreme exposure category. In these months, the maximum values of the UV index do not exceed 12. For more detailed information, check out our hourly San Alejandro UV Index data.

Average daily maximum UV levels by month for San Alejandro. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)151616161211111214141514