Cilacap weather by month & the best time to visit
🇮🇩 Indonesia · coastal city break · tropical monsoon climate
The best time to visit Cilacap is August — its sunniest month (Sunshine Score 85/100), with September close behind. Cilacap averages about 2,250 hours of sunshine a year. Daytime highs around 28°C / 82°F and roughly 38 mm of rain in August.
Jump to: month-by-month table · sea temperature · nearby alternatives · embed this data
- Sun hours / year
- 2,250
- Sunniest month
- August
- Peak score
- 85/100
- Rain / year
- 2,671 mm
- Midday UV at peak
- 10 (very high)
- Sea at warmest
- 31°C / 88°F
- Population
- 1.2M
- Elevation
- 24 m

When is the best time to visit Cilacap?
For sunshine, the best time to visit Cilacap is August, then September. The dullest month is January (64/100, 314 mm of rain). The full month-by-month picture is in the table below.
How sunny is Cilacap?
Cilacap gets a moderate 2,250 hours of sunshine a year. August (85/100) is noticeably better than January (64). It ranks #55 of 119 destinations in Indonesia for annual sunshine, above the national median of 2,183 hours. The year's 2,671 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 64 | 30° / 86°F | 24° / 75°F | 314 mm | 10 | 29° / 84°F |
| February | 64 | 30° / 86°F | 24° / 75°F | 318 mm | 10 | 31° / 88°F |
| March | 64 | 30° / 86°F | 24° / 75°F | 297 mm | 10 | 31° / 88°F |
| April | 64 | 30° / 86°F | 24° / 75°F | 251 mm | 10 | 30° / 86°F |
| May | 64 | 29° / 84°F | 24° / 75°F | 219 mm | 9 | 28° / 82°F |
| June | 67 | 29° / 84°F | 23° / 73°F | 136 mm | 8 | 29° / 84°F |
| July | 74 | 28° / 82°F | 21° / 70°F | 98 mm | 8 | 28° / 82°F |
| August | 85 | 28° / 82°F | 21° / 70°F | 38 mm | 9 | 26° / 79°F |
| September | 76 | 29° / 84°F | 21° / 70°F | 89 mm | 10 | 27° / 81°F |
| October | 64 | 30° / 86°F | 22° / 72°F | 216 mm | 10 | 28° / 82°F |
| November | 64 | 30° / 86°F | 24° / 75°F | 329 mm | 9 | 31° / 88°F |
| December | 64 | 29° / 84°F | 24° / 75°F | 366 mm | 9 | 30° / 86°F |
Sea temperature in Cilacap by month
The sea off Cilacap is warmest in February at around 31°C / 88°F, and coolest in August at 26°C / 79°F. The water sits at a comfortable 21°C or warmer roughly all year round. Month-by-month sea-surface temperatures are in the Sea column of the table above.
See Cilacap on the interactive sunshine globe →
Nearby places for sunshine
- Yogyakarta Indonesia · 155 km · best in Aug · 2,418 h sun/yr
- Semarang Indonesia · 166 km · best in Jul · 2,418 h sun/yr
- Bandung Indonesia · 181 km · best in Aug · 2,260 h sun/yr
- Surakarta Indonesia · 191 km · best in Aug · 2,418 h sun/yr
- Jakarta Indonesia · 312 km · best in Aug · 2,107 h sun/yr
- Malang Indonesia · 407 km · best in Aug · 2,491 h sun/yr
Nearest destinations
- Cijulang Indonesia · 61 km · 2,164 h sun/yr · best in Aug
- Kertajati Indonesia · 147 km · 2,326 h sun/yr · best in Aug
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