Climate averages 1991–2020
Cilegon weather
in May.
A hot, wet month: the 4th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a hot month in Cilegon: daytime highs average 29.4°C and nights cool to about 24.8°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 165 mm of rain on roughly 24 days, which makes May a wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 51 min on an average May day.
The nearest other city in this atlas is Serang (16 km away). In May its highs average 29.7°C, about as warm as Cilegon, with 133 mm of rain.
Among the 200 cities listed in Indonesia, Cilegon ranks joint 108th of 200 for the warmest May highs and joint 111th of 200 for the driest May (rainfall, lowest first). The mean May high of those 200 cities is 29.2°C; Cilegon is 0.2°C warmer than that mean.
From May to June, average highs fall by 0.2°C to 29.2°C, and monthly rainfall falls from 165 mm to 120 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
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, selected | 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
May in nearby cities
- Serang in MayIndonesia · 16 kmHigh 29.7°C · Low 24.2°C · 133 mm rain
- Pandeglang in MayIndonesia · 33 kmHigh 28.9°C · Low 22.6°C · 183 mm rain
- Kresek in MayIndonesia · 38 kmHigh 29.9°C · Low 24.0°C · 134 mm rain
- Rangkasbitung in MayIndonesia · 44 kmHigh 30.1°C · Low 23.2°C · 152 mm rain
- Pasarkemis in MayIndonesia · 55 kmHigh 29.8°C · Low 23.1°C · 134 mm rain
- Curug in MayIndonesia · 62 kmHigh 30.1°C · Low 22.5°C · 134 mm rain
- Teluknaga in MayIndonesia · 65 kmHigh 30.2°C · Low 23.9°C · 114 mm rain
- Tangerang in MayIndonesia · 66 kmHigh 29.9°C · Low 23.1°C · 118 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.