Climate averages 1991–2020
Olongapo weather
in December.
A hot, moderately wet month: the joint 9th warmest and the 5th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Olongapo: daytime highs average 28.9°C and nights cool to about 24.0°C. By daytime temperature it is the joint 9th warmest of the 12 months.
Expect about 67 mm of rain on roughly 7 days, which makes December a moderately wet month (the 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 16 min on an average December day.
The nearest other city in this atlas is Balanga (32 km away). In December its highs average 28.8°C, about as warm as Olongapo, with 81 mm of rain.
Among the 151 cities listed in the Philippines, Olongapo ranks joint 29th of 151 for the warmest December highs and 7th of 151 for the driest December (rainfall, lowest first). The mean December high of those 151 cities is 28.1°C; Olongapo is 0.9°C warmer than that mean.
From December to January, average highs fall by 0.1°C to 28.8°C, and monthly rainfall falls from 67 mm to 18 mm.
The annual picture
December 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
Olongapo climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.8°C23.0°C | 23.0°C | 18 | 2.6 | 11.411 h |
| February | 29.7°C23.0°C | 23.0°C | 19 | 2.8 | 11.612 h |
| March | 31.1°C23.9°C | 23.9°C | 23 | 3.8 | 12.012 h |
| April | 32.4°C25.3°C | 25.3°C | 27 | 5.5 | 12.512 h |
| May | 31.6°C26.0°C | 26.0°C | 185 | 18.9 | 12.813 h |
| June | 30.0°C25.6°C | 25.6°C | 361 | 25.7 | 13.013 h |
| July | 29.0°C25.2°C | 25.2°C | 571 | 29.5 | 12.913 h |
| August | 28.6°C25.1°C | 25.1°C | 565 | 29.4 | 12.613 h |
| September | 28.9°C25.0°C | 25.0°C | 436 | 27.7 | 12.212 h |
| October | 29.5°C24.8°C | 24.8°C | 225 | 20.3 | 11.812 h |
| November | 29.6°C24.7°C | 24.7°C | 86 | 9.3 | 11.511 h |
| December, selected | 28.9°C24.0°C | 24.0°C | 67 | 6.6 | 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
December in nearby cities
- Balanga in DecemberPhilippines · 32 kmHigh 28.8°C · Low 24.7°C · 81 mm rain
- Limay in DecemberPhilippines · 45 kmHigh 28.2°C · Low 24.6°C · 80 mm rain
- Angeles City in DecemberPhilippines · 48 kmHigh 28.5°C · Low 21.1°C · 78 mm rain
- San Fernando in DecemberPhilippines · 49 kmHigh 28.5°C · Low 22.5°C · 84 mm rain
- Mariveles in DecemberPhilippines · 49 kmHigh 28.6°C · Low 25.3°C · 80 mm rain
- Bulaon in DecemberPhilippines · 50 kmHigh 28.6°C · Low 21.7°C · 84 mm rain
- Apalit in DecemberPhilippines · 54 kmHigh 28.4°C · Low 22.5°C · 84 mm rain
- Malolos in DecemberPhilippines · 57 kmHigh 28.5°C · Low 23.1°C · 87 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 Olongapo) is explained once on the Olongapo year overview and on the Sources, method and limits page.