Climate averages 1991–2020
Cilegon weather
in July.
A hot, wet month: the 8th warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a hot month in Cilegon: daytime highs average 29.1°C and nights cool to about 23.9°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 94 mm of rain on roughly 18 days, which makes July a wet month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 48 min on an average July day.
The nearest other city in this atlas is Serang (16 km away). In July its highs average 29.5°C, about as warm as Cilegon, with 73 mm of rain.
Among the 200 cities listed in Indonesia, Cilegon ranks joint 104th of 200 for the warmest July highs and 117th of 200 for the driest July (rainfall, lowest first). The mean July high of those 200 cities is 29.0°C; Cilegon is 0.1°C warmer than that mean.
From July to August, average highs rise by 0.4°C to 29.5°C, and monthly rainfall falls from 94 mm to 70 mm.
The annual picture
July 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, selected | 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
July in nearby cities
- Serang in JulyIndonesia · 16 kmHigh 29.5°C · Low 23.4°C · 73 mm rain
- Pandeglang in JulyIndonesia · 33 kmHigh 28.8°C · Low 21.7°C · 90 mm rain
- Kresek in JulyIndonesia · 38 kmHigh 29.9°C · Low 23.1°C · 76 mm rain
- Rangkasbitung in JulyIndonesia · 44 kmHigh 30.0°C · Low 22.5°C · 74 mm rain
- Pasarkemis in JulyIndonesia · 55 kmHigh 30.1°C · Low 22.3°C · 76 mm rain
- Curug in JulyIndonesia · 62 kmHigh 30.6°C · Low 21.9°C · 76 mm rain
- Teluknaga in JulyIndonesia · 65 kmHigh 30.4°C · Low 23.2°C · 63 mm rain
- Tangerang in JulyIndonesia · 66 kmHigh 30.3°C · Low 22.4°C · 67 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.