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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 27 °C (82 °F) through the year, but rarely can drop to 23 °C (74 °F) or can rise to as high as 30 °C (87 °F). The average annual precipitation amounts to about 2067 mm (81.4 inches) and receives 269 rainy days on the 1 mm (0.04 inches) threshold annually. San Juan enjoys an average of 3396 hours of sunshine throughout the year, and daylight varies from 11 hours 34 minutes to 12 hours 38 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 27 to 27 °C (81 - 82 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 26 to 26 °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
Maximum28°C
(83°F)		28°C
(82°F)		28°C
(83°F)		29°C
(84°F)		30°C
(86°F)		30°C
(87°F)		30°C
(86°F)		30°C
(86°F)		30°C
(86°F)		30°C
(86°F)		29°C
(85°F)		29°C
(84°F)
Mean maximum28°C
(82°F)		27°C
(82°F)		28°C
(82°F)		29°C
(84°F)		29°C
(85°F)		29°C
(85°F)		30°C
(86°F)		30°C
(86°F)		30°C
(85°F)		29°C
(85°F)		29°C
(84°F)		28°C
(83°F)
Average high27°C
(81°F)		27°C
(80°F)		27°C
(81°F)		28°C
(82°F)		28°C
(83°F)		28°C
(84°F)		28°C
(83°F)		28°C
(83°F)		28°C
(83°F)		28°C
(83°F)		28°C
(82°F)		27°C
(82°F)
Daily mean26°C
(79°F)		26°C
(79°F)		26°C
(80°F)		27°C
(80°F)		27°C
(82°F)		27°C
(82°F)		27°C
(81°F)		27°C
(81°F)		27°C
(81°F)		27°C
(81°F)		27°C
(81°F)		27°C
(80°F)
Average low25°C
(78°F)		25°C
(78°F)		26°C
(78°F)		26°C
(79°F)		26°C
(80°F)		26°C
(80°F)		26°C
(79°F)		26°C
(80°F)		26°C
(79°F)		26°C
(79°F)		26°C
(79°F)		26°C
(79°F)
Mean minimum25°C
(77°F)		25°C
(76°F)		25°C
(76°F)		25°C
(77°F)		25°C
(78°F)		26°C
(78°F)		25°C
(77°F)		25°C
(78°F)		25°C
(78°F)		25°C
(77°F)		25°C
(77°F)		25°C
(77°F)
Minimum24°C
(76°F)		24°C
(76°F)		23°C
(74°F)		25°C
(77°F)		25°C
(77°F)		25°C
(77°F)		25°C
(77°F)		25°C
(77°F)		25°C
(77°F)		24°C
(76°F)		23°C
(74°F)		24°C
(75°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 October, November and December, with an average of 27 rainy days and 239 mm (9.4 inches) of precipitation per month. The driest months in San Juan are February, March and April. On average, 102 mm (4.0 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)186 (7.3)137 (5.4)98 (3.9)72 (2.8)184 (7.2)158 (6.2)183 (7.2)143 (5.6)190 (7.5)227 (9.0)247 (9.7)243 (9.5)
Average precipitation days (≥ 1 mm)211614162625242223282826

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 4 minutes a day. Least sunny months in San Juan: January, February and November receive an average of 8 hours 29 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 hours227269308305313289290292279274267277
Mean daily daylight hours11h 38m11h 49m12h 3m12h 18m12h 32m12h 38m12h 35m12h 23m12h 9m11h 54m11h 41m11h 34m

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 15 - 16, which corresponds to the Extreme category of sun exposure. June, November and December are in the Extreme exposure category. In these months, the maximum values of the UV index do not exceed 13. 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)131416161413141515141211