Surabaya, East Java, Indonesia climate
Average temperatures, precipitation and all-time records for Surabaya, East Java, Indonesia, with every day graded against ~46 years of local climate history (1980–2026). Its warmest month is October, averaging a high of 33°C, and its coldest is August, with an average low of 25°C.
Surabaya is the capital and largest city of East Java province and the second-largest city in Indonesia, after Jakarta. Located on the northeastern corner of Java island, on the Madura Strait, it is one of the earliest port cities in Southeast Asia. via Wikipedia
Surabaya average temperatures by month
Typical daily high and low, and average precipitation, for each month in Surabaya, East Java, Indonesia, based on 1980–2026 records. The wettest month is January (10 mm on an average day).
| Month | Avg high | Avg low | Avg precip |
|---|---|---|---|
| January | 31°C | 25°C | 10 mm |
| February | 31°C | 25°C | 10 mm |
| March | 31°C | 25°C | 10 mm |
| April | 31°C | 26°C | 8 mm |
| May | 32°C | 26°C | 3 mm |
| June | 31°C | 25°C | 3 mm |
| July | 31°C | 25°C | 0 mm |
| August | 31°C | 25°C | 0 mm |
| September | 32°C | 25°C | 0 mm |
| October | 33°C | 26°C | 3 mm |
| November | 32°C | 26°C | 5 mm |
| December | 31°C | 26°C | 10 mm |
Each bar spans the 10th-percentile daily low to the 90th-percentile daily high (the range most days fall within), coloured cold → hot on a shared -23°C to 46°C scale, so the whole year's rhythm reads at a glance.
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Record extremes
- Hottest day on record: 36°C on 1987-11-01
- Coldest day on record: 21°C on 1986-07-01
Percentiles compare each day to Surabaya, East Java, Indonesia's own history, so grades are relative to this location: a “Near Record” day here isn't the same temperature as elsewhere. How the grades work →