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Monthly climate in San Isidro, Philippines

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification San Isidro features a tropical rainforest climate (Af). Temperatures typically range between 26 °C (78 °F) and 28 °C (82 °F) through the year, but rarely can drop to 23 °C (75 °F) or can rise to as high as 30 °C (86 °F). The average annual precipitation amounts to about 2509 mm (98.8 inches) and receives 260 rainy days on the 1 mm (0.04 inches) threshold annually. San Isidro enjoys an average of 3382 hours of sunshine throughout the year, and daylight varies from 11 hours 23 minutes to 12 hours 49 minutes per day.

Monthly average temperatures in San Isidro, Philippines

The warmest months in San Isidro are May, June and August, with daily mean temperatures ranging from 28 to 28 °C (82 - 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 (78 - 79 °F) throughout the day. On average each year, San Isidro experiences 328 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 Isidro. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum28°C
(83°F)		28°C
(83°F)		29°C
(84°F)		29°C
(85°F)		30°C
(86°F)		30°C
(85°F)		29°C
(85°F)		30°C
(86°F)		30°C
(86°F)		29°C
(85°F)		29°C
(84°F)		29°C
(84°F)
Mean maximum28°C
(82°F)		28°C
(82°F)		28°C
(83°F)		29°C
(84°F)		30°C
(85°F)		29°C
(85°F)		29°C
(85°F)		29°C
(85°F)		29°C
(85°F)		29°C
(84°F)		29°C
(84°F)		29°C
(84°F)
Average high27°C
(80°F)		26°C
(80°F)		27°C
(81°F)		28°C
(82°F)		29°C
(84°F)		29°C
(84°F)		28°C
(83°F)		28°C
(83°F)		28°C
(83°F)		28°C
(83°F)		28°C
(83°F)		27°C
(81°F)
Daily mean26°C
(79°F)		26°C
(78°F)		26°C
(79°F)		27°C
(81°F)		28°C
(82°F)		28°C
(82°F)		27°C
(81°F)		28°C
(82°F)		27°C
(82°F)		27°C
(81°F)		27°C
(81°F)		26°C
(80°F)
Average low25°C
(78°F)		25°C
(77°F)		25°C
(78°F)		26°C
(79°F)		27°C
(80°F)		27°C
(80°F)		26°C
(80°F)		27°C
(80°F)		26°C
(80°F)		26°C
(79°F)		26°C
(79°F)		26°C
(78°F)
Mean minimum24°C
(76°F)		24°C
(75°F)		24°C
(76°F)		25°C
(77°F)		26°C
(78°F)		26°C
(79°F)		25°C
(78°F)		25°C
(78°F)		25°C
(78°F)		25°C
(78°F)		25°C
(78°F)		25°C
(77°F)
Minimum24°C
(75°F)		23°C
(75°F)		24°C
(76°F)		24°C
(76°F)		25°C
(78°F)		26°C
(78°F)		25°C
(78°F)		25°C
(77°F)		25°C
(77°F)		25°C
(77°F)		25°C
(77°F)		24°C
(76°F)

Compare climate in San Isidro with other places

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

Monthly average precipitation in San Isidro, Philippines

San Isidro usually has the most precipitation in July, September and December, with an average of 26 rainy days and 327 mm (12.9 inches) of precipitation per month. The driest months in San Isidro are March, April and May. On average, 90 mm (3.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in San Isidro. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)227 (8.9)129 (5.1)91 (3.6)90 (3.5)90 (3.6)191 (7.5)333 (13.1)271 (10.7)290 (11.4)242 (9.5)196 (7.7)359 (14.1)
Average precipitation days (≥ 1 mm)181714112024292424262627

Monthly sunshine hours in San Isidro, Philippines

The sunniest months in San Isidro are March, April and May, when the sun shines an average of 10 hours 18 minutes a day. Least sunny months in San Isidro: January, February and December receive an average of 8 hours 14 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in San Isidro. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours218264308311327301289277275270268267
Mean daily daylight hours11h 28m11h 43m12h 3m12h 23m12h 41m12h 49m12h 45m12h 30m12h 10m11h 50m11h 32m11h 23m

Solar UV radiation in San Isidro, Philippines

San Isidro 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. 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 Isidro UV Index data.

Average daily maximum UV levels by month for San Isidro. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)121315161414141415131111