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Cilacap, Indonesia climate
Aw Tropical savanna (dry winter)
Cilacap has a remarkably steady tropical climate (Tropical savanna (dry winter), Köppen Aw). The hottest month is April with an average daily high near 89°F, while the coldest is August averaging around 73°F at night. Precipitation totals about 72 inches a year and is strongly seasonal — December alone averages 10.2 inches while August barely receives 0.97 inches.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Cilacap climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 89 | 89 | 89 | 89 | 88 | 87 | 85 | 84 | 85 | 86 | 87 | 88 |
| Avg temp (°F) | 83 | 83 | 83 | 83 | 82 | 81 | 79 | 79 | 80 | 81 | 82 | 82 |
| Avg low (°F) | 76 | 76 | 76 | 77 | 77 | 75 | 74 | 73 | 74 | 76 | 76 | 76 |
| Precipitation (in) | 8.5 | 7.9 | 6.8 | 6.9 | 6.0 | 3.9 | 2.3 | 1.0 | 2.3 | 6.9 | 9.4 | 10.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 89 | 89 | 89 | 89 | 88 | 87 |
| Avg temp (°F) | 83 | 83 | 83 | 83 | 82 | 81 |
| Avg low (°F) | 76 | 76 | 76 | 77 | 77 | 75 |
| Precipitation (in) | 8.5 | 7.9 | 6.8 | 6.9 | 6.0 | 3.9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 85 | 84 | 85 | 86 | 87 | 88 |
| Avg temp (°F) | 79 | 79 | 80 | 81 | 82 | 82 |
| Avg low (°F) | 74 | 73 | 74 | 76 | 76 | 76 |
| Precipitation (in) | 2.3 | 1.0 | 2.3 | 6.9 | 9.4 | 10.2 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 89 | 88 | 84 | 80 | 64 | 57 | 51 | 50 | 59 | 73 | 85 | 89 |
| Relative humidity (%) | 87 | 88 | 88 | 89 | 89 | 89 | 88 | 86 | 84 | 84 | 87 | 88 |
| Wind speed (mph) | 3.4 | 3.1 | 3.0 | 3.2 | 3.8 | 4.0 | 4.7 | 5.1 | 5.4 | 5.1 | 4.3 | 3.8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 89 | 88 | 84 | 80 | 64 | 57 |
| Relative humidity (%) | 87 | 88 | 88 | 89 | 89 | 89 |
| Wind speed (mph) | 3.4 | 3.1 | 3.0 | 3.2 | 3.8 | 4.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 51 | 50 | 59 | 73 | 85 | 89 |
| Relative humidity (%) | 88 | 86 | 84 | 84 | 87 | 88 |
| Wind speed (mph) | 4.7 | 5.1 | 5.4 | 5.1 | 4.3 | 3.8 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 28 years of daily observations at Cilacap, a weather station, about 1 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.