Climate averages 1991–2020
Serang weather
in July.
A hot, moderately wet month: the joint 7th 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 Serang: daytime highs average 29.5°C and nights cool to about 23.4°C. By daytime temperature it is the joint 7th warmest of the 12 months.
Expect about 73 mm of rain on roughly 15 days, which makes July a moderately 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 Cilegon (16 km away). In July its highs average 29.1°C, about as warm as Serang, with 94 mm of rain.
Among the 200 cities listed in Indonesia, Serang ranks joint 88th of 200 for the warmest July highs and joint 93rd of 200 for the driest July (rainfall, lowest first). The mean July high of those 200 cities is 29.0°C; Serang is 0.6°C warmer than that mean.
From July to August, average highs rise by 0.6°C to 30.1°C, and monthly rainfall falls from 73 mm to 50 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
Serang climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.6°C24.1°C | 24.1°C | 278 | 28.3 | 12.412 h |
| February | 28.8°C24.1°C | 24.1°C | 257 | 26.5 | 12.312 h |
| March | 29.2°C24.3°C | 24.3°C | 236 | 27.5 | 12.112 h |
| April | 29.5°C24.4°C | 24.4°C | 190 | 25.5 | 12.012 h |
| May | 29.7°C24.2°C | 24.2°C | 133 | 21.6 | 11.812 h |
| June | 29.6°C23.8°C | 23.8°C | 100 | 17.6 | 11.812 h |
| July, selected | 29.5°C23.4°C | 23.4°C | 73 | 15.0 | 11.812 h |
| August | 30.1°C23.5°C | 23.5°C | 50 | 12.8 | 11.912 h |
| September | 30.9°C23.8°C | 23.8°C | 62 | 14.2 | 12.112 h |
| October | 30.9°C24.3°C | 24.3°C | 119 | 20.7 | 12.212 h |
| November | 29.8°C24.4°C | 24.4°C | 192 | 25.8 | 12.412 h |
| December | 28.7°C24.2°C | 24.2°C | 256 | 26.3 | 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
- Cilegon in JulyIndonesia · 16 kmHigh 29.1°C · Low 23.9°C · 94 mm rain
- Pandeglang in JulyIndonesia · 22 kmHigh 28.8°C · Low 21.7°C · 90 mm rain
- Kresek in JulyIndonesia · 25 kmHigh 29.9°C · Low 23.1°C · 76 mm rain
- Rangkasbitung in JulyIndonesia · 29 kmHigh 30.0°C · Low 22.5°C · 74 mm rain
- Pasarkemis in JulyIndonesia · 42 kmHigh 30.1°C · Low 22.3°C · 76 mm rain
- Curug in JulyIndonesia · 48 kmHigh 30.6°C · Low 21.9°C · 76 mm rain
- Tangerang in JulyIndonesia · 53 kmHigh 30.3°C · Low 22.4°C · 67 mm rain
- Teluknaga in JulyIndonesia · 54 kmHigh 30.4°C · Low 23.2°C · 63 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 Serang) is explained once on the Serang year overview and on the Sources, method and limits page.