Climate averages 1991–2020
Cilacap weather
in December.
A warm, very wet month: the 7th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a warm month in Cilacap: daytime highs average 27.7°C and nights cool to about 24.7°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 394 mm of rain on roughly 28 days, which makes December a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 34 min on an average December day.
The nearest other city in this atlas is Purwokerto (42 km away). In December its highs average 28.8°C, 1.1°C warmer than Cilacap, with 390 mm of rain.
Among the 200 cities listed in Indonesia, Cilacap ranks joint 156th of 200 for the warmest December highs and joint 155th of 200 for the driest December (rainfall, lowest first). The mean December high of those 200 cities is 28.4°C; Cilacap is 0.7°C cooler than that mean.
From December to January, average highs rise by 0.3°C to 28.0°C, and monthly rainfall falls from 394 mm to 315 mm.
The annual picture
December 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 | 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, selected | 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
December in nearby cities
- Purwokerto in DecemberIndonesia · 42 kmHigh 28.8°C · Low 23.5°C · 390 mm rain
- Ciamis in DecemberIndonesia · 85 kmHigh 28.3°C · Low 22.3°C · 452 mm rain
- Tarub in DecemberIndonesia · 90 kmHigh 28.9°C · Low 24.5°C · 459 mm rain
- Tegal in DecemberIndonesia · 96 kmHigh 29.0°C · Low 24.6°C · 343 mm rain
- Tasikmalaya in DecemberIndonesia · 98 kmHigh 27.6°C · Low 21.6°C · 452 mm rain
- Pemalang in DecemberIndonesia · 102 kmHigh 28.9°C · Low 24.1°C · 461 mm rain
- Kuningan in DecemberIndonesia · 102 kmHigh 27.3°C · Low 21.5°C · 468 mm rain
- Wonosobo in DecemberIndonesia · 107 kmHigh 25.4°C · Low 20.1°C · 547 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.