Surabaja weather in May 2026

Expect daytime maximum temperatures of 90°F in Surabaja, Indonesia in May and very high heat and humidity based on long-term weather averages. There are 9 hours of sunshine per day on average with typically 4.8 inches of rainfall in the month.

  • 90°F maximum daytime temperature in May in Surabaja90
    90°F max day temperature
  • 9 hours of sunshine per day
  • 7 days with some rainfall in May in Surabaja7
    7 days with some rainfall
  • 77°F minimum night-time temperature in May in Surabaja77
    77°F min night temperature
  • 12 hours of daylight per day in May in Surabaja12
    12 hours of daylight per day
  • Very high heat & humidity in May in SurabajaVH
    Very High heat & humidity
  • 4.8 inches monthly rainfall in May in Surabaja4.8
    4.8 inches of monthly rainfall
  • UV (maximum) index 11 (Extreme) in May in Surabaja11
    11 (Extreme) UV index
  • 84°F sea temperature in May in Surabaja84
    84°F sea temperature

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The May weather guide for Indonesia (Surabaja) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C)  |  Imperial (°F)

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More about Indonesia

How hot is it in Surabaja in May?

Daytime temperatures usually reach 90°F in Surabaja in May with very high heat and humidity, falling to 77°F at night.

How sunny is it in Surabaja in May?

There are normally 9 hours of bright sunshine each day in Surabaja in May - that's 76% of daylight hours.

How warm is the sea around Surabaja in May?

The average sea temperature around Surabaja in May is 84°F.

Does it rain in Surabaja in May?

There are usually 7 days with some rain in Surabaja in May and the average monthly rainfall is 4.8 inches.

Surabaja May sunrise & sunset times

Browse the sunrise and sunset times for Surabaja in May 2026. Select a month to view Surabaja sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st May 2026 05:31 17:22
Saturday, 16th May 2026 05:32 17:19
Sunday, 31st May 2026 05:35 17:19

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