Climate averages 1991–2020
Calasiao weather
in September.
A hot, very wet month: the joint 9th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Calasiao: daytime highs average 29.0°C and nights cool to about 24.1°C. By daytime temperature it is the joint 9th warmest of the 12 months.
Expect about 324 mm of rain on roughly 26 days, which makes September a very wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 14 min on an average September day.
The nearest other city in this atlas is Dagupan (5 km away). In September its highs average 29.1°C, about as warm as Calasiao, with 324 mm of rain.
Among the 151 cities listed in the Philippines, Calasiao ranks joint 89th of 151 for the warmest September highs and joint 108th of 151 for the driest September (rainfall, lowest first). The mean September high of those 151 cities is 29.0°C; Calasiao is level with that mean.
From September to October, average highs rise by 0.3°C to 29.3°C, and monthly rainfall falls from 324 mm to 169 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Calasiao climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.8°C21.8°C | 21.8°C | 9.5 | 1.7 | 11.311 h |
| February | 29.7°C22.1°C | 22.1°C | 12 | 1.9 | 11.612 h |
| March | 31.3°C23.2°C | 23.2°C | 19 | 3.4 | 12.012 h |
| April | 32.8°C24.6°C | 24.6°C | 33 | 6.7 | 12.512 h |
| May | 32.1°C25.2°C | 25.2°C | 192 | 19.5 | 12.913 h |
| June | 30.7°C24.8°C | 24.8°C | 243 | 24.0 | 13.113 h |
| July | 29.4°C24.4°C | 24.4°C | 400 | 28.2 | 13.013 h |
| August | 29.0°C24.3°C | 24.3°C | 408 | 28.2 | 12.713 h |
| September, selected | 29.0°C24.1°C | 24.1°C | 324 | 26.1 | 12.212 h |
| October | 29.3°C23.9°C | 23.9°C | 169 | 13.5 | 11.812 h |
| November | 29.6°C23.5°C | 23.5°C | 54 | 5.4 | 11.411 h |
| December | 29.0°C22.7°C | 22.7°C | 34 | 4.7 | 11.211 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Dagupan in SeptemberPhilippines · 5 kmHigh 29.1°C · Low 24.3°C · 324 mm rain
- Urdaneta in SeptemberPhilippines · 23 kmHigh 28.8°C · Low 23.1°C · 367 mm rain
- Bayambang in SeptemberPhilippines · 24 kmHigh 29.4°C · Low 23.3°C · 307 mm rain
- Paniqui in SeptemberPhilippines · 45 kmHigh 29.6°C · Low 23.6°C · 307 mm rain
- Baguio in SeptemberPhilippines · 51 kmHigh 21.2°C · Low 16.3°C · 463 mm rain
- La Trinidad in SeptemberPhilippines · 55 kmHigh 22.4°C · Low 17.3°C · 463 mm rain
- Bauang in SeptemberPhilippines · 58 kmHigh 28.4°C · Low 24.9°C · 374 mm rain
- Tarlac City in SeptemberPhilippines · 64 kmHigh 29.7°C · Low 23.7°C · 293 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Calasiao) is explained once on the Calasiao year overview and on the Sources, method and limits page.
Dagupan lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.