Climate averages 1991–2020

Cilacap weather
in January.

A hot, very wet month: the 5th warmest and the 10th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 28.0°C Daytime mean, January

Average low 24.8°C Night-time mean, January

Rainfall 315 mm 28 days with ≥1 mm

Daylight 13 h Sunrise to sunset, per day

January is a hot month in Cilacap: daytime highs average 28.0°C and nights cool to about 24.8°C. By daytime temperature it is the 5th warmest of the 12 months.

Expect about 315 mm of rain on roughly 28 days, which makes January a very wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 31 min on an average January day.

The nearest other city in this atlas is Purwokerto (42 km away). In January its highs average 29.2°C, 1.2°C warmer than Cilacap, with 426 mm of rain.

Among the 200 cities listed in Indonesia, Cilacap ranks joint 143rd of 200 for the warmest January highs and joint 103rd of 200 for the driest January (rainfall, lowest first). The mean January high of those 200 cities is 28.2°C; Cilacap is 0.2°C cooler than that mean.

From January to February, average highs rise by 0.1°C to 28.1°C, and monthly rainfall falls from 315 mm to 244 mm.

The annual picture

January in context

30-year average

Average highAverage low°C

Monthly rainfall

Average total · mm

Averages 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

1991–2020

Monthly climate averages for Cilacap, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January, selected	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	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

January in nearby cities

Distance from Cilacap

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 limits

How 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.