Last updated: March 2, 2024
The weather in Surabaya, Indonesia, during January is characterized by an average temperature of 27°C (81°F). Highs can soar to 34°C (93°F), while lows may dip to 23°C (74°F). Typically, the humidity level in Surabaya throughout January hovers around 85%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In January, Surabaya averages 257 mm (10.1 inches) of rainfall, typically over the course of 23 rainy days. The month enjoys an average of 12 hours 20 minutes of daylight, with the sun shining for approximately 7 hours 11 minutes each day. Additionally, there is a 2% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In January, the UV Index in Surabaya reaches a maximum of 15, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 10 minutes.
| 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UVI | 1 | 3 | 7 | 11 | 14 | 15 | 14 | 10 | 7 | 3 | 1 | 1 | 0 |
| Exposure | Low | Moderate | High | Extreme | VeryHigh | High | Moderate | Low | |||||
| Time to burn | 45 min | 30 min | 25 min | 10 min | 15 min | 25 min | 30 min | 45 min | |||||