Temperature
Hot by day, warm at night.
Surabaya is usually most comfortable in July and August. Typical daytime highs range from 88–94°F across the year. Rain varies by season.

Hot by day, warm at night.
It rains on most days. About 18 wet days this month.
Cloudier spells limit sunshine.
Very hot days with very humid air.
In November, afternoons feel about 97° and nights feel near 87°.
Mostly cloudy skies this month.
Calm winds are typical in November.
November late afternoons are around 89°F, easing to about 84°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 88 | 76 | 11.8 | 29 | 8.7 | 84 |
| Feb | 88 | 76 | 11.0 | 27 | 8.9 | 85 |
| Mar | 88 | 76 | 10.0 | 28 | 9.3 | 84 |
| Apr | 89 | 76 | 5.6 | 21 | 9.7 | 81 |
| May | 91 | 76 | 1.9 | 10 | 10.5 | 75 |
| Jun | 91 | 75 | 0.9 | 6 | 10.6 | 71 |
| Jul | 91 | 74 | 0.5 | 3 | 10.8 | 67 |
| Aug | 91 | 73 | 0.1 | 2 | 11.0 | 64 |
| Sep | 93 | 75 | 0.4 | 3 | 11.2 | 63 |
| Oct | 94 | 77 | 1.5 | 8 | 11.4 | 65 |
| Nov | 92 | 78 | 4.6 | 18 | 10.4 | 72 |
| Dec | 89 | 77 | 10.0 | 27 | 8.9 | 82 |
Similar climates
Want a side-by-side climate view? Compare Surabaya with Singapore.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Aug 26, 2026
Data & methodology