Climate averages 1991–2020
Cilacap weather
in September.
A warm, wet month: the joint 10th warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Cilacap: daytime highs average 27.0°C and nights cool to about 23.3°C. By daytime temperature it is the joint 10th warmest of the 12 months.
Expect about 109 mm of rain on roughly 18 days, which makes September a wet month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 03 min on an average September day.
The nearest other city in this atlas is Purwokerto (42 km away). In September its highs average 29.4°C, 2.4°C warmer than Cilacap, with 90 mm of rain.
Among the 200 cities listed in Indonesia, Cilacap ranks 189th of 200 for the warmest September highs and joint 127th of 200 for the driest September (rainfall, lowest first). The mean September high of those 200 cities is 30.1°C; Cilacap is 3.1°C cooler than that mean.
From September to October, average highs rise by 0.4°C to 27.4°C, and monthly rainfall rises from 109 mm to 221 mm.
The annual picture
September 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
Cilacap climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.0°C24.8°C | 24.8°C | 315 | 28.2 | 12.513 h |
| February | 28.1°C24.8°C | 24.8°C | 244 | 25.2 | 12.412 h |
| March | 28.2°C24.8°C | 24.8°C | 259 | 27.9 | 12.112 h |
| April | 28.3°C24.7°C | 24.7°C | 206 | 27.0 | 11.912 h |
| May | 28.3°C24.7°C | 24.7°C | 162 | 25.0 | 11.812 h |
| June | 27.8°C24.2°C | 24.2°C | 127 | 21.4 | 11.712 h |
| July | 27.0°C23.4°C | 23.4°C | 101 | 17.7 | 11.712 h |
| August | 26.8°C23.1°C | 23.1°C | 72 | 15.3 | 11.912 h |
| September, selected | 27.0°C23.3°C | 23.3°C | 109 | 17.9 | 12.112 h |
| October | 27.4°C23.8°C | 23.8°C | 221 | 23.4 | 12.312 h |
| November | 27.5°C24.4°C | 24.4°C | 365 | 27.5 | 12.512 h |
| December | 27.7°C24.7°C | 24.7°C | 394 | 28.1 | 12.613 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
September in nearby cities
- Purwokerto in SeptemberIndonesia · 42 kmHigh 29.4°C · Low 22.0°C · 90 mm rain
- Ciamis in SeptemberIndonesia · 85 kmHigh 27.4°C · Low 21.0°C · 110 mm rain
- Tarub in SeptemberIndonesia · 90 kmHigh 31.4°C · Low 24.2°C · 63 mm rain
- Tegal in SeptemberIndonesia · 96 kmHigh 31.5°C · Low 24.1°C · 37 mm rain
- Tasikmalaya in SeptemberIndonesia · 98 kmHigh 26.8°C · Low 20.4°C · 110 mm rain
- Pemalang in SeptemberIndonesia · 102 kmHigh 31.2°C · Low 24.2°C · 94 mm rain
- Kuningan in SeptemberIndonesia · 102 kmHigh 29.1°C · Low 20.7°C · 44 mm rain
- Wonosobo in SeptemberIndonesia · 107 kmHigh 26.2°C · Low 18.9°C · 89 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 Cilacap) is explained once on the Cilacap year overview and on the Sources, method and limits page.