Surabaya weather in December
December in Surabaya: hot, soaked, with poor air quality — a gamble, with 29 rainy days.
#11 of 12 months in Surabaya · #755 of 897 destinations to visit in December · comfort 51/100 (tier D)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Surabaya in December
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Surabaya climate normals — December
| Daytime high | 30°C / 87°F | 🥵 hot |
|---|---|---|
| Nighttime low | 26°C / 78°F | |
| Rainfall | 272 mm / 10.7 in | ⛈ soaked |
| Rainy days | 29 days | |
| Humidity | 81% | 💦 very humid |
| Dew point | 24°C / 75°F | |
| Sunshine | 9.2 h/day | |
| Daylight | 12.5 h | |
| Wind | 11 km/h / 7 mph | |
| Air quality (US AQI) | 147 | 😷 poor |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Surabaya in December — FAQ
- Is December a good time to visit Surabaya?
- December in Surabaya: hot, soaked, with poor air quality — a gamble, with 29 rainy days. It ranks #11 of 12 months for Surabaya on SeasonMap's comfort score (51/100).
- What is the weather like in Surabaya in December?
- In December, Surabaya averages a daily high of 30.4°C and a low of 25.5°C, with about 271.6 mm of rain over roughly 29.4 rainy days.
- What is the air quality in Surabaya in December?
- Surabaya has a mean US Air Quality Index of about 147 in December.