Surabaya weather in August
August is one of the best months to visit Surabaya: highs of 32°C (90°F) and about 11 mm (0.4 in) of rain on average. Nights average 24°C (76°F) and cloud cover 39% (NASA POWER, 2001–2025 averages). The sea averages 30°C (86°F). It is the driest month of the year and the 3rd warmest. Compared with July, it is warmer and drier; September brings highs of 33°C (92°F) and 18 mm (0.7 in) of rain.
Is August a good time to visit Surabaya?
best month Weather score 86/100.
Yes. August is one of the best months for weather in Surabaya.
Does it rain a lot in Surabaya in August?
No, it is usually dry: about 11 mm (0.4 in) falls in an average August. It is the driest month of the year.
How warm is Surabaya in August?
Days average 32°C (90°F) and nights 24°C (76°F).
Surabaya weather by month
| Month | High | Low | Rain | Cloud | Sea | Weather |
|---|---|---|---|---|---|---|
| January | 29°C (84°F) | 26°C (78°F) | 337 mm | 90% | 31°C (88°F) | least pleasant |
| February | 29°C (83°F) | 25°C (78°F) | 316 mm | 88% | 32°C (89°F) | least pleasant |
| March | 29°C (84°F) | 26°C (78°F) | 272 mm | 84% | 32°C (89°F) | least pleasant |
| April | 30°C (85°F) | 26°C (79°F) | 193 mm | 76% | 32°C (90°F) | fair |
| May | 30°C (86°F) | 26°C (79°F) | 123 mm | 61% | 31°C (88°F) | fair |
| June | 30°C (87°F) | 25°C (77°F) | 74 mm | 52% | 31°C (87°F) | best |
| July | 31°C (88°F) | 24°C (76°F) | 35 mm | 45% | 30°C (85°F) | best |
| August | 32°C (90°F) | 24°C (76°F) | 11 mm | 39% | 30°C (86°F) | best |
| September | 33°C (92°F) | 25°C (78°F) | 18 mm | 40% | 31°C (87°F) | best |
| October | 33°C (92°F) | 26°C (80°F) | 63 mm | 58% | 32°C (89°F) | fair |
| November | 32°C (89°F) | 27°C (80°F) | 140 mm | 78% | 32°C (90°F) | fair |
| December | 30°C (85°F) | 26°C (78°F) | 300 mm | 91% | 32°C (89°F) | least pleasant |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), sea temperature from Open-Meteo Marine. Page updated . How we rate months