Weather in Surabaya: January
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Average day temperature: | 88.0°F |
| Average night temperature: | 77.6°F | |
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Sea water temperature: | 84.5°F |
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Number of sunny days: | 4 days |
| Day length: | 12.4 - 12.5 hours | |
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Number of rainy days: | 17 days |
| Precipitation totals: | 8.0 in. | |
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forecast
| Surabaya |
temperature
| Surabaya |
Air temperature in January, °F
The highest day temperature during January of 2026 was 90°F. At the same time the lowest night temperature was 74°F. Daily and nightly averages during January were 84.9°F and 75.6°F.
Sea water temperature in Surabaya in January, °F
The average sea water temperature in January of 2026 was 84.3°F. The highest and lowest sea temperatures during the month were 85.3°F and 82.0°F.
Mostly all days in January are partly cloudy but sunny or cloudy days are also possible.
Precipitation total in January, in.
Precipitation total value in Surabaya in January is 6.9 in. Other months of the year show relatively similar values.
The average wind speed value in January is 6.7 mph It makes January most windy month of the year.
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in January is: 5.5.
Best time for vacation in Surabaya
Surabaya on a weather map
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