Climate averages 1991–2020
Olongapo weather
in May.
A hot, very wet month: the 2nd warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a hot month in Olongapo: daytime highs average 31.6°C and nights cool to about 26.0°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 185 mm of rain on roughly 19 days, which makes May a very wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 49 min on an average May day.
The nearest other city in this atlas is Balanga (32 km away). In May its highs average 31.6°C, about as warm as Olongapo, with 155 mm of rain.
Among the 151 cities listed in the Philippines, Olongapo ranks joint 43rd of 151 for the warmest May highs and joint 85th of 151 for the driest May (rainfall, lowest first). The mean May high of those 151 cities is 30.7°C; Olongapo is 0.9°C warmer than that mean.
From May to June, average highs fall by 1.6°C to 30.0°C, and monthly rainfall rises from 185 mm to 361 mm.
The annual picture
May 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, selected | 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 | 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
May in nearby cities
- Balanga in MayPhilippines · 32 kmHigh 31.6°C · Low 26.7°C · 155 mm rain
- Limay in MayPhilippines · 45 kmHigh 31.0°C · Low 26.5°C · 169 mm rain
- Angeles City in MayPhilippines · 48 kmHigh 32.5°C · Low 24.8°C · 169 mm rain
- San Fernando in MayPhilippines · 49 kmHigh 32.4°C · Low 25.2°C · 136 mm rain
- Mariveles in MayPhilippines · 49 kmHigh 31.1°C · Low 27.1°C · 169 mm rain
- Bulaon in MayPhilippines · 50 kmHigh 32.6°C · Low 24.9°C · 136 mm rain
- Apalit in MayPhilippines · 54 kmHigh 32.2°C · Low 25.0°C · 136 mm rain
- Malolos in MayPhilippines · 57 kmHigh 32.0°C · Low 25.4°C · 143 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.