Climate averages 1991–2020
Cilegon weather
in August.
A hot, moderately wet month: the 3rd warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Cilegon: daytime highs average 29.5°C and nights cool to about 23.9°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 70 mm of rain on roughly 17 days, which makes August a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 11 h 55 min on an average August day.
The nearest other city in this atlas is Serang (16 km away). In August its highs average 30.1°C, 0.7°C warmer than Cilegon, with 50 mm of rain.
Among the 200 cities listed in Indonesia, Cilegon ranks joint 110th of 200 for the warmest August highs and 111th of 200 for the driest August (rainfall, lowest first). The mean August high of those 200 cities is 29.5°C; Cilegon is level with that mean.
From August to September, average highs rise by 0.7°C to 30.1°C, and monthly rainfall rises from 70 mm to 74 mm.
The annual picture
August 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
Cilegon climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.4°C24.3°C | 24.3°C | 286 | 28.7 | 12.412 h |
| February | 28.6°C24.4°C | 24.4°C | 264 | 26.4 | 12.312 h |
| March | 28.9°C24.7°C | 24.7°C | 251 | 28.0 | 12.112 h |
| April | 29.2°C24.8°C | 24.8°C | 218 | 26.5 | 12.012 h |
| May | 29.4°C24.8°C | 24.8°C | 165 | 23.8 | 11.812 h |
| June | 29.2°C24.4°C | 24.4°C | 120 | 20.1 | 11.812 h |
| July | 29.1°C23.9°C | 23.9°C | 94 | 18.1 | 11.812 h |
| August, selected | 29.5°C23.9°C | 23.9°C | 70 | 16.9 | 11.912 h |
| September | 30.1°C24.2°C | 24.2°C | 74 | 15.8 | 12.112 h |
| October | 30.2°C24.7°C | 24.7°C | 134 | 20.3 | 12.212 h |
| November | 29.3°C24.7°C | 24.7°C | 223 | 25.2 | 12.412 h |
| December | 28.3°C24.5°C | 24.5°C | 293 | 27.1 | 12.512 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
August in nearby cities
- Serang in AugustIndonesia · 16 kmHigh 30.1°C · Low 23.5°C · 50 mm rain
- Pandeglang in AugustIndonesia · 33 kmHigh 29.4°C · Low 21.8°C · 72 mm rain
- Kresek in AugustIndonesia · 38 kmHigh 30.5°C · Low 23.2°C · 55 mm rain
- Rangkasbitung in AugustIndonesia · 44 kmHigh 30.6°C · Low 22.5°C · 60 mm rain
- Pasarkemis in AugustIndonesia · 55 kmHigh 30.9°C · Low 22.4°C · 55 mm rain
- Curug in AugustIndonesia · 62 kmHigh 31.5°C · Low 22.2°C · 55 mm rain
- Teluknaga in AugustIndonesia · 65 kmHigh 31.2°C · Low 23.3°C · 30 mm rain
- Tangerang in AugustIndonesia · 66 kmHigh 31.1°C · Low 22.6°C · 43 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 Cilegon) is explained once on the Cilegon year overview and on the Sources, method and limits page.