Santiago climate
Santiago (Philippines) has a tropical rainforest climate (Köppen Af). The average temperature over the year is 27 °C80 °F, and about 3,020 mm119 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Santiago climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2882 | 2068 | 2475 | 1154.5 |
| Feb | 2984 | 2068 | 2476 | 1034.1 |
| Mar | 3188 | 2170 | 2679 | 1174.6 |
| Apr | 3493 | 2373 | 2883 | 1024.0 |
| May | 3492 | 2476 | 2984 | 2379.3 |
| Jun | 3290 | 2576 | 2983 | 26310 |
| Jul | 3189 | 2476 | 2882 | 38315 |
| Aug | 3188 | 2476 | 2882 | 39015 |
| Sep | 3188 | 2475 | 2882 | 31913 |
| Oct | 3087 | 2374 | 2780 | 34213 |
| Nov | 2985 | 2373 | 2679 | 33513 |
| Dec | 2882 | 2171 | 2576 | 31312 |
| Year | 3493 | 2068 | 2780 | 3,020119 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 90% | 71% | 3.6 | 11:14 |
| Feb | 87% | 62% | 4.4 | 11:35 |
| Mar | 83% | 57% | 5.3 | 12:00 |
| Apr | 79% | 56% | 6.1 | 12:30 |
| May | 81% | 67% | 6.1 | 12:54 |
| Jun | 85% | 72% | 5.9 | 13:07 |
| Jul | 87% | 80% | 5.3 | 13:02 |
| Aug | 89% | 87% | 4.9 | 12:41 |
| Sep | 88% | 83% | 5.0 | 12:12 |
| Oct | 90% | 79% | 4.2 | 11:44 |
| Nov | 91% | 71% | 3.6 | 11:20 |
| Dec | 92% | 76% | 3.1 | 11:08 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Santiago is like
The warmest month is May, with an average high of 34 °C92 °F and a low of 24 °C76 °F. The coldest is January, when highs average 28 °C82 °F and lows 20 °C68 °F. Seasonal differences are small — just 5.2 °C9.4 °F between the warmest and the coolest month.
It is very wet, receiving about 3,020 mm119 in of precipitation per year. The wettest three-month stretch is July–September, which brings 36% of the annual total. The wettest month is August (390 mm15 in), the driest is April (102 mm4.0 in).
Relative humidity ranges from 79% in April to 92% in December. The clearest skies (lowest average cloud amount, 56%) are typical of April. Average wind speed near the ground ranges from 2 km/h (1 mph) in May to 4 km/h (3 mph) in December. Daylight lasts from about 11.1 hours in December to 13.1 hours in June.
Best time to visit Santiago
Based on these averages, the most comfortable months for sightseeing and outdoor activities are January and February: average highs of 28 °C82 °F to 29 °C84 °F with 103 mm4.1 in to 115 mm4.5 in of precipitation per month.
The most challenging month is August, which is hot, with average highs of 31 °C88 °F, very wet (390 mm15 in) and humid (89% relative humidity).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Santiago
- Wetter months (June–December) — highs 2882 to 32 °C90 °F, lows 2171 to 25 °C76 °F, about 335 mm13 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and a good rain jacket or umbrella and quick-drying shoes.
- Drier months (January–May) — highs 2882 to 34 °C93 °F, lows 2068 to 24 °C76 °F, about 135 mm5.3 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and an umbrella or light rain jacket.
How Santiago compares
Compared with Ilagan, about 63 km to the northeast, Santiago is on average 0.3 °C0.6 °F warmer and receives 12% more precipitation (3,020 mm119 in vs 2,695 mm106 in). The difference is largest in October (0.6 °C1.1 °F warmer).
Of the 62 places in the Philippines covered by World Climates, Santiago is the 51st warmest by annual mean temperature and the 9th wettest by annual precipitation. See all of them on the Philippines climate page.
Places in other countries with the most similar temperature and rainfall pattern (seasons shifted for the other hemisphere where needed): Kendari (Indonesia, Af), Banjarbaru (Indonesia, Af) and Pasir Mas (Malaysia, Am).
Nearby places
- Ilagan 63 km · 26 °C80 °F · 2,695 mm106 in
- Tabuk 82 km · 26 °C79 °F · 2,492 mm98 in
- Tuguegarao 105 km · 27 °C80 °F · 2,378 mm94 in
- Baguio 106 km · 18 °C64 °F · 3,091 mm122 in
- Urdaneta 131 km · 27 °C81 °F · 2,795 mm110 in
- Cabanatuan City 147 km · 27 °C80 °F · 2,671 mm105 in
- Dagupan 148 km · 28 °C82 °F · 2,795 mm110 in
- Tarlac City 168 km · 27 °C81 °F · 2,753 mm108 in
Frequently asked questions
What is the warmest month in Santiago?
May is the warmest month in Santiago, with an average high of 34 °C (92 °F) and an average low of 24 °C (76 °F).
What is the coldest month in Santiago?
January is the coldest month, with an average high of 28 °C (82 °F) and an average low of 20 °C (68 °F).
When does it rain the most in Santiago?
August is the wettest month with about 390 mm (15.3 in) of precipitation; April is the driest with about 102 mm (4.0 in).
What is the best time to visit Santiago?
Judging by long-term averages, the most comfortable months are January and February.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 758 m, while Santiago lies at about 78 m. Temperatures on this page were therefore adjusted by +4.4 °C8 °F using the standard lapse rate of 6.5 °C per 1,000 m.