Climate averages 1991–2020
Cilegon weather
in April.
A hot, very wet month: the joint 6th warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a hot month in Cilegon: daytime highs average 29.2°C and nights cool to about 24.8°C. By daytime temperature it is the joint 6th warmest of the 12 months.
Expect about 218 mm of rain on roughly 27 days, which makes April a very wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 59 min on an average April day.
The nearest other city in this atlas is Serang (16 km away). In April its highs average 29.5°C, about as warm as Cilegon, with 190 mm of rain.
Among the 200 cities listed in Indonesia, Cilegon ranks joint 113th of 200 for the warmest April highs and joint 66th of 200 for the driest April (rainfall, lowest first). The mean April high of those 200 cities is 29.0°C; Cilegon is 0.2°C warmer than that mean.
From April to May, average highs rise by 0.2°C to 29.4°C, and monthly rainfall falls from 218 mm to 165 mm.
The annual picture
April 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, selected | 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 | 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
April in nearby cities
- Serang in AprilIndonesia · 16 kmHigh 29.5°C · Low 24.4°C · 190 mm rain
- Pandeglang in AprilIndonesia · 33 kmHigh 28.7°C · Low 22.8°C · 257 mm rain
- Kresek in AprilIndonesia · 38 kmHigh 29.7°C · Low 24.1°C · 219 mm rain
- Rangkasbitung in AprilIndonesia · 44 kmHigh 29.8°C · Low 23.3°C · 226 mm rain
- Pasarkemis in AprilIndonesia · 55 kmHigh 29.7°C · Low 23.3°C · 219 mm rain
- Curug in AprilIndonesia · 62 kmHigh 29.9°C · Low 22.7°C · 219 mm rain
- Teluknaga in AprilIndonesia · 65 kmHigh 30.0°C · Low 24.0°C · 169 mm rain
- Tangerang in AprilIndonesia · 66 kmHigh 29.8°C · Low 23.2°C · 201 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.