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Monthly climate in San Rafael, Peru

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification San Rafael features a hot desert climate (BWh). Temperatures typically range between 22 °C (73 °F) and 28 °C (83 °F) through the year, but rarely can drop to 14 °C (57 °F) or can rise to as high as 39 °C (102 °F). The average annual precipitation amounts to about 396 mm (15.6 inches) and receives 44 rainy days on the 1 mm (0.04 inches) threshold annually. San Rafael enjoys an average of 3777 hours of sunshine throughout the year, and daylight varies from 11 hours 49 minutes to 12 hours 23 minutes per day.

Monthly average temperatures in San Rafael, Peru

The warmest months in San Rafael are January, February and March, with daily mean temperatures ranging from 28 to 28 °C (82 - 83 °F) throughout the day. The coldest temperatures usually occur in July, August and September, when daily mean temperatures range from 22 to 23 °C (73 - 73 °F) throughout the day. On average each year, San Rafael 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 Rafael. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum38°C
(100°F)		38°C
(101°F)		39°C
(102°F)		38°C
(101°F)		38°C
(100°F)		34°C
(94°F)		33°C
(91°F)		33°C
(91°F)		33°C
(92°F)		35°C
(95°F)		34°C
(94°F)		36°C
(98°F)
Mean maximum37°C
(99°F)		37°C
(99°F)		37°C
(98°F)		37°C
(98°F)		36°C
(96°F)		32°C
(91°F)		31°C
(89°F)		31°C
(88°F)		32°C
(90°F)		33°C
(91°F)		33°C
(92°F)		35°C
(96°F)
Average high34°C
(94°F)		35°C
(94°F)		34°C
(94°F)		34°C
(94°F)		33°C
(91°F)		31°C
(88°F)		30°C
(85°F)		29°C
(85°F)		30°C
(86°F)		31°C
(87°F)		31°C
(88°F)		33°C
(91°F)
Daily mean28°C
(82°F)		28°C
(83°F)		28°C
(83°F)		27°C
(81°F)		26°C
(78°F)		24°C
(75°F)		23°C
(73°F)		22°C
(73°F)		23°C
(73°F)		23°C
(74°F)		23°C
(75°F)		26°C
(78°F)
Average low22°C
(73°F)		23°C
(74°F)		24°C
(75°F)		22°C
(72°F)		20°C
(69°F)		19°C
(66°F)		18°C
(64°F)		17°C
(63°F)		18°C
(64°F)		18°C
(65°F)		18°C
(65°F)		20°C
(69°F)
Mean minimum20°C
(69°F)		22°C
(71°F)		22°C
(72°F)		20°C
(69°F)		18°C
(66°F)		17°C
(64°F)		16°C
(61°F)		16°C
(61°F)		17°C
(62°F)		17°C
(62°F)		16°C
(61°F)		18°C
(66°F)
Minimum19°C
(67°F)		20°C
(68°F)		21°C
(69°F)		19°C
(66°F)		15°C
(60°F)		16°C
(62°F)		15°C
(60°F)		15°C
(59°F)		16°C
(61°F)		16°C
(61°F)		14°C
(57°F)		17°C
(62°F)

Compare climate in San Rafael with other places

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

Monthly average precipitation in San Rafael, Peru

San Rafael usually has the most precipitation in February, March and April, with an average of 8 rainy days and 102 mm (4.0 inches) of precipitation per month. The driest months in San Rafael are July, August and September. On average, 2 mm (0.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in San Rafael. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)20 (0.8)83 (3.3)182 (7.2)41 (1.6)11 (0.4)4 (0.1)3 (0.1)2 (0.1)2 (0.1)9 (0.3)13 (0.5)26 (1.0)
Average precipitation days (≥ 1 mm)51010631000126

Monthly sunshine hours in San Rafael, Peru

The sunniest months in San Rafael are July, August and December, when the sun shines an average of 10 hours 52 minutes a day. Least sunny months in San Rafael: January, February and March 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 Rafael. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours261284288305327322340340328328319329
Mean daily daylight hours12h 21m12h 14m12h 6m11h 58m11h 52m11h 49m11h 51m11h 56m12h 4m12h 12m12h 19m12h 23m

Solar UV radiation in San Rafael, Peru

San Rafael experiences the highest level of ultraviolet (UV) radiation in February, March and April, when the maximum UV index can reach values of 15 - 16, which corresponds to the Extreme category of sun exposure. June, July and August 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 Rafael UV Index data.

Average daily maximum UV levels by month for San Rafael. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)141516151311111214141413