Climate of Ilocos Sur, Philippines
Area-weighted average across Ilocos Sur. For where people actually live and travel, see the cities below.
Ilocos Sur, a subdivision of Philippines, has a tropical climate on average. Area-weighted monthly temperatures across the whole territory range from 23.2°C / 73.8°F in January to 27.1°C / 80.8°F in May, with rainfall from 12 mm / 0.5 in to 616 mm / 24.3 in depending on the season (2560 mm / 100.8 in total across the year).
| Month | Temperature | Rainfall | Matches |
|---|---|---|---|
| January | 23.2°C73.8°F | 12 mm0.5″ | Sunny & Warm |
| February | 23.8°C74.8°F | 14 mm0.6″ | Sunny & Warm |
| March | 25.2°C77.4°F | 29 mm1.1″ | Sunny & Hot, Sunny & Warm |
| April | 26.6°C79.9°F | 56 mm2.2″ | — |
| May | 27.1°C80.8°F | 232 mm9.1″ | Tropical |
| June | 26.4°C79.5°F | 374 mm14.7″ | Tropical |
| July | 25.8°C78.4°F | 533 mm21″ | Tropical |
| August | 25.5°C77.9°F | 616 mm24.3″ | Tropical |
| September | 25.4°C77.7°F | 385 mm15.2″ | Tropical |
| October | 25.3°C77.5°F | 190 mm7.5″ | Tropical |
| November | 24.9°C76.8°F | 92 mm3.6″ | Tropical |
| December | 23.9°C75°F | 27 mm1.1″ | Sunny & Warm |
Frequently asked questions
What is the best time to visit Ilocos Sur?
The best months to visit Ilocos Sur, Philippines for sunny, dry weather are January, February, March, December. The warmest month is May at an area-wide average of 27.1°C / 80.8°F, and the driest is January with about 12 mm / 0.5 in of rainfall.
What is the climate of Ilocos Sur?
Ilocos Sur, Philippines has area-weighted monthly average temperatures ranging from 23.2°C / 73.8°F in January to 27.1°C / 80.8°F in May. Annual rainfall averages about 2560 mm / 100.8 in, with the wettest month being August (616 mm / 24.3 in) and the driest January (12 mm / 0.5 in). Because this is an area average across the whole subdivision, local city values can differ substantially.
What is the hottest month in Ilocos Sur?
The hottest month in Ilocos Sur is May, with an area-wide average temperature of 27.1°C / 80.8°F.
What is the coldest month in Ilocos Sur?
The coldest month in Ilocos Sur is January, with an area-wide average temperature of 23.2°C / 73.8°F.
When does it rain most in Ilocos Sur?
The wettest month in Ilocos Sur is August, averaging about 616 mm / 24.3 in of rainfall. The driest is January with about 12 mm / 0.5 in.