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Monthly climate in San Juan, Philippines

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification San Juan features a tropical rainforest climate (Af). Temperatures typically range between 26 °C (79 °F) and 28 °C (83 °F) through the year, but rarely can drop to 21 °C (71 °F) or can rise to as high as 33 °C (92 °F). The average annual precipitation amounts to about 2695 mm (106.1 inches) and receives 307 rainy days on the 1 mm (0.04 inches) threshold annually. San Juan enjoys an average of 3362 hours of sunshine throughout the year, and daylight varies from 11 hours 31 minutes to 12 hours 42 minutes per day.

Monthly average temperatures in San Juan, Philippines

The warmest months in San Juan are May, June and August, with daily mean temperatures ranging from 28 to 28 °C (83 - 83 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 26 to 27 °C (79 - 80 °F) throughout the day. On average each year, San Juan 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 Juan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum30°C
(87°F)		30°C
(87°F)		31°C
(88°F)		32°C
(89°F)		33°C
(92°F)		33°C
(92°F)		33°C
(92°F)		33°C
(92°F)		33°C
(91°F)		32°C
(90°F)		33°C
(91°F)		31°C
(88°F)
Mean maximum30°C
(86°F)		30°C
(86°F)		31°C
(87°F)		31°C
(89°F)		32°C
(90°F)		32°C
(89°F)		33°C
(91°F)		33°C
(91°F)		32°C
(90°F)		32°C
(89°F)		31°C
(89°F)		31°C
(87°F)
Average high28°C
(83°F)		28°C
(83°F)		29°C
(85°F)		30°C
(86°F)		31°C
(87°F)		31°C
(87°F)		30°C
(87°F)		31°C
(88°F)		31°C
(87°F)		30°C
(87°F)		30°C
(85°F)		29°C
(84°F)
Daily mean26°C
(80°F)		26°C
(79°F)		27°C
(81°F)		27°C
(82°F)		28°C
(83°F)		28°C
(83°F)		28°C
(82°F)		28°C
(83°F)		28°C
(82°F)		28°C
(82°F)		27°C
(81°F)		27°C
(80°F)
Average low25°C
(77°F)		24°C
(76°F)		25°C
(77°F)		25°C
(78°F)		26°C
(79°F)		26°C
(79°F)		26°C
(79°F)		26°C
(79°F)		26°C
(78°F)		25°C
(78°F)		25°C
(78°F)		25°C
(77°F)
Mean minimum24°C
(75°F)		23°C
(74°F)		24°C
(75°F)		24°C
(75°F)		25°C
(77°F)		25°C
(77°F)		25°C
(77°F)		25°C
(77°F)		25°C
(77°F)		25°C
(76°F)		24°C
(76°F)		24°C
(75°F)
Minimum24°C
(75°F)		21°C
(71°F)		23°C
(73°F)		23°C
(74°F)		24°C
(76°F)		24°C
(76°F)		24°C
(76°F)		24°C
(76°F)		24°C
(76°F)		24°C
(76°F)		22°C
(72°F)		23°C
(73°F)

Compare climate in San Juan with other places

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

Monthly average precipitation in San Juan, Philippines

San Juan usually has the most precipitation in January, October and December, with an average of 27 rainy days and 319 mm (12.6 inches) of precipitation per month. The driest months in San Juan are March, April and May. On average, 148 mm (5.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in San Juan. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)308 (12.1)211 (8.3)166 (6.5)106 (4.2)171 (6.8)216 (8.5)225 (8.8)192 (7.6)218 (8.6)272 (10.7)231 (9.1)378 (14.9)
Average precipitation days (≥ 1 mm)242324222826252325292830

Monthly sunshine hours in San Juan, Philippines

The sunniest months in San Juan are March, April and May, when the sun shines an average of 10 hours 9 minutes a day. Least sunny months in San Juan: January, February and December receive an average of 8 hours 10 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in San Juan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours222262305306321289288285280276264258
Mean daily daylight hours11h 34m11h 47m12h 3m12h 20m12h 35m12h 42m12h 38m12h 26m12h 9m11h 52m11h 38m11h 31m

Solar UV radiation in San Juan, Philippines

San Juan experiences the highest level of ultraviolet (UV) radiation in March, April and September, when the maximum UV index can reach values of 14 - 16, which corresponds to the Extreme category of sun exposure. January, November and December 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 Juan UV Index data.

Average daily maximum UV levels by month for San Juan. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)121416161413141414141211