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Siay climate by month
What the weather is like
Siay has a tropical rainforest climate (Köppen Af): .
The warmest month is March, when afternoons average 30° and nights 25°. July is the coolest month, with highs of 28° and lows of 25°. The difference between the warmest and the coolest month is about 1°, a small seasonal swing typical of places tempered by the sea.
About 2,350 mm of precipitation falls in an average year. November is the wettest month (240 mm, 28 wet days) and February the driest (70 mm, 18 wet days). Cloud cover ranges from 38% in March to 68% in June.
The sea reaches about 30° in May. Sea temperatures lag the air by a month or two, so late summer is usually warmer for swimming than early summer.
Compared with Manila, the capital, Siay is 1.2° cooler on a March afternoon and receives more precipitation over the year.
Year in figures
- Hottest afternoons
- 30° · March
- Coldest nights
- 25° · January
- Wettest month
- November
- Driest month
- February
- Clearest skies
- March · 38% cloud
- Warmest sea
- 30° · May
- Longest day
- 12 h 34 min
- Shortest day
- 11 h 41 min
Twelve months at a glance
Temperature and precipitation
Daily high/low range bars, monthly precipitation columns, sea temperature lineTemperature curve
Average high, low and seaDaylight
Hours between sunrise and sunset on the 15th of each monthClimate normals month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high | 29° | 29° | 30° | 30° | 29° | 29° | 28° | 28° | 28° | 29° | 29° | 29° |
| Average low | 25° | 25° | 25° | 25° | 25° | 25° | 25° | 25° | 25° | 25° | 25° | 25° |
| Precipitation | 94 mm | 70 mm | 100 mm | 116 mm | 209 mm | 298 mm | 289 mm | 280 mm | 264 mm | 256 mm | 240 mm | 134 mm |
| Wet days (≥1 mm) | 20.8 | 17.5 | 17.8 | 17.7 | 24.2 | 26.8 | 25.8 | 25.8 | 23.8 | 27 | 27.5 | 27 |
| Cloud cover | 48% | 45% | 38% | 39% | 56% | 68% | 67% | 63% | 65% | 65% | 58% | 51% |
| Sea temperature | 29° | 29° | 29° | 30° | 30° | 30° | 29° | 29° | 29° | 29° | 30° | 29° |
| Daylight | 11h 43 | 11h 53 | 12h 04 | 12h 17 | 12h 28 | 12h 34 | 12h 32 | 12h 23 | 12h 10 | 11h 58 | 11h 47 | 11h 41 |
| Month score | 42 | 42 | 44 | 44 | 39 | 36 | 38 | 40 | 38 | 37 | 39 | 41 |