January Weather in Surabaya

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%.

23°C (74°F)

Minimum temperature

27°C (81°F)

Average temperature

34°C (93°F)

Maximum temperature

85%

Humidity

Precipitation and Sunshine hours

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.

257 mm (10.1 inches)

Precipitation

23 rainy days

Rainy days

7 hours 11 minutes

Sunshine hours

2%

Chance of sun

UV Index

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.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
  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

Compare Surabaya's Climate with Cities Worldwide