Climate averages 1991–2020
Rosario, Philippines weather
in September.
A hot, very wet month: the 7th 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 Rosario, Philippines: daytime highs average 29.7°C and nights cool to about 24.8°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 329 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 Batangas (22 km away). In September its highs average 29.1°C, 0.6°C cooler than Rosario, Philippines, with 318 mm of rain.
Among the 151 cities listed in the Philippines, Rosario, Philippines ranks joint 28th of 151 for the warmest September highs and 111th of 151 for the driest September (rainfall, lowest first). The mean September high of those 151 cities is 29.0°C; Rosario, Philippines is 0.7°C warmer than that mean.
From September to October, average highs fall by 0.3°C to 29.4°C, and monthly rainfall falls from 329 mm to 236 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
Rosario, Philippines climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.8°C23.3°C | 23.3°C | 49 | 10.1 | 11.411 h |
| February | 28.6°C23.2°C | 23.2°C | 45 | 7.8 | 11.712 h |
| March | 30.1°C23.9°C | 23.9°C | 50 | 9.8 | 12.012 h |
| April | 31.8°C25.0°C | 25.0°C | 52 | 10.6 | 12.412 h |
| May | 31.9°C25.7°C | 25.7°C | 150 | 20.8 | 12.813 h |
| June | 30.9°C25.4°C | 25.4°C | 219 | 24.9 | 12.913 h |
| July | 29.8°C25.0°C | 25.0°C | 339 | 27.6 | 12.813 h |
| August | 29.9°C25.0°C | 25.0°C | 270 | 25.9 | 12.613 h |
| September, selected | 29.7°C24.8°C | 24.8°C | 329 | 27.1 | 12.212 h |
| October | 29.4°C24.5°C | 24.5°C | 236 | 24.6 | 11.812 h |
| November | 28.9°C24.5°C | 24.5°C | 145 | 19.9 | 11.512 h |
| December | 28.1°C24.0°C | 24.0°C | 187 | 17.0 | 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
- Batangas in SeptemberPhilippines · 22 kmHigh 29.1°C · Low 24.7°C · 318 mm rain
- Lipa City in SeptemberPhilippines · 35 kmHigh 27.8°C · Low 22.6°C · 355 mm rain
- Candelaria in SeptemberPhilippines · 40 kmHigh 29.2°C · Low 24.3°C · 340 mm rain
- San Pablo in SeptemberPhilippines · 50 kmHigh 29.3°C · Low 24.4°C · 355 mm rain
- Lucena in SeptemberPhilippines · 54 kmHigh 29.7°C · Low 25.8°C · 340 mm rain
- Los Baños in SeptemberPhilippines · 60 kmHigh 29.8°C · Low 24.8°C · 314 mm rain
- Tagaytay in SeptemberPhilippines · 60 kmHigh 25.7°C · Low 21.6°C · 391 mm rain
- Pagbilao in SeptemberPhilippines · 64 kmHigh 29.0°C · Low 25.9°C · 224 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 Rosario) is explained once on the Rosario, Philippines year overview and on the Sources, method and limits page.