Calayan climate by month
What the weather is like
Calayan has a tropical monsoon climate (Köppen Am): .
The warmest month is June, when afternoons average 29° and nights 27°. January is the coolest month, with highs of 24° and lows of 23°. The difference between the warmest and the coolest month is about 5°, a small seasonal swing typical of places tempered by the sea.
About 2,121 mm of precipitation falls in an average year. August is the wettest month (237 mm, 27 wet days) and April the driest (41 mm, 7 wet days). Cloud cover ranges from 21% in April to 59% in August.
The sea reaches about 29° in June. 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, Calayan is 1.9° cooler on a June afternoon and receives more precipitation over the year.
Year in figures
- Hottest afternoons
- 29° · June
- Coldest nights
- 23° · January
- Wettest month
- August
- Driest month
- April
- Clearest skies
- April · 21% cloud
- Warmest sea
- 29° · June
- Longest day
- 13 h 17 min
- Shortest day
- 10 h 59 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 | 24° | 24° | 25° | 27° | 28° | 29° | 29° | 29° | 28° | 27° | 26° | 25° |
| Average low | 23° | 23° | 24° | 26° | 27° | 27° | 27° | 27° | 27° | 26° | 25° | 23° |
| Precipitation | 128 mm | 71 mm | 45 mm | 41 mm | 152 mm | 164 mm | 218 mm | 237 mm | 286 mm | 334 mm | 290 mm | 155 mm |
| Wet days (≥1 mm) | 17 | 10.3 | 8 | 7.2 | 15 | 23.7 | 25.8 | 26.5 | 24.3 | 24.2 | 22.7 | 22.3 |
| Cloud cover | 39% | 31% | 26% | 21% | 40% | 51% | 51% | 59% | 50% | 39% | 39% | 43% |
| Sea temperature | 25° | 25° | 26° | 27° | 29° | 29° | 29° | 29° | 29° | 28° | 27° | 26° |
| Daylight | 11h 05 | 11h 31 | 12h 01 | 12h 34 | 13h 02 | 13h 17 | 13h 11 | 12h 48 | 12h 16 | 11h 44 | 11h 14 | 10h 59 |
| Month score | 63 | 75 | 79 | 75 | 50 | 43 | 43 | 40 | 45 | 53 | 58 | 62 |