Climate averages 1991–2020
Calamba weather
in September.
A hot, very wet month: the joint 6th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Calamba: daytime highs average 29.5°C and nights cool to about 24.8°C. By daytime temperature it is the joint 6th warmest of the 12 months.
Expect about 314 mm of rain on roughly 27 days, which makes September a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 13 min on an average September day.
The nearest other city in this atlas is Cabuyao (8 km away). In September its highs average 29.2°C, about as warm as Calamba, with 314 mm of rain.
Among the 151 cities listed in the Philippines, Calamba ranks joint 41st of 151 for the warmest September highs and joint 104th of 151 for the driest September (rainfall, lowest first). The mean September high of those 151 cities is 29.0°C; Calamba is 0.5°C warmer than that mean.
From September to October, average highs fall by 0.1°C to 29.5°C, and monthly rainfall falls from 314 mm to 194 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
Calamba climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.8°C22.7°C | 22.7°C | 40 | 4.5 | 11.411 h |
| February | 28.7°C22.8°C | 22.8°C | 28 | 3.9 | 11.712 h |
| March | 30.4°C23.5°C | 23.5°C | 33 | 4.6 | 12.012 h |
| April | 32.3°C24.8°C | 24.8°C | 37 | 6.1 | 12.412 h |
| May | 32.2°C25.7°C | 25.7°C | 170 | 19.2 | 12.813 h |
| June | 30.8°C25.4°C | 25.4°C | 243 | 25.7 | 13.013 h |
| July | 29.7°C25.0°C | 25.0°C | 368 | 28.9 | 12.913 h |
| August | 29.5°C24.9°C | 24.9°C | 301 | 27.9 | 12.613 h |
| September, selected | 29.5°C24.8°C | 24.8°C | 314 | 27.1 | 12.212 h |
| October | 29.5°C24.6°C | 24.6°C | 194 | 19.4 | 11.812 h |
| November | 28.9°C24.3°C | 24.3°C | 103 | 10.6 | 11.511 h |
| December | 28.0°C23.6°C | 23.6°C | 141 | 10.4 | 11.311 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
- Cabuyao in SeptemberPhilippines · 8 kmHigh 29.2°C · Low 24.6°C · 314 mm rain
- Los Baños in SeptemberPhilippines · 9 kmHigh 29.8°C · Low 24.8°C · 314 mm rain
- Silang in SeptemberPhilippines · 21 kmHigh 27.8°C · Low 22.9°C · 433 mm rain
- San Pablo in SeptemberPhilippines · 24 kmHigh 29.3°C · Low 24.4°C · 355 mm rain
- Dasmariñas in SeptemberPhilippines · 28 kmHigh 29.2°C · Low 24.7°C · 433 mm rain
- Santa Cruz in SeptemberPhilippines · 28 kmHigh 29.8°C · Low 24.8°C · 343 mm rain
- Tagaytay in SeptemberPhilippines · 28 kmHigh 25.7°C · Low 21.6°C · 391 mm rain
- Binangonan in SeptemberPhilippines · 28 kmHigh 28.7°C · Low 24.7°C · 328 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 Calamba) is explained once on the Calamba year overview and on the Sources, method and limits page.
Cabuyao and Los Baños lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.