Haikou weather in May 2026

Expect daytime maximum temperatures of 90°F in Haikou, China in May and very high heat and humidity based on long-term weather averages. There are 7 hours of sunshine per day on average with 16 days with some rainfall and typically 7.4 inches of rainfall in the month.

  • 90°F maximum daytime temperature in May in Haikou90
    90°F max day temperature
  • 7 hours of sunshine per day
  • 16 days with some rainfall in May in Haikou16
    16 days with some rainfall
  • 75°F minimum night-time temperature in May in Haikou75
    75°F min night temperature
  • 13 hours of daylight per day in May in Haikou13
    13 hours of daylight per day
  • Very high heat & humidity in May in HaikouVH
    Very High heat & humidity
  • 7.4 inches monthly rainfall in May in Haikou7.4
    7.4 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in May in Haikou11
    11+ (Extreme) UV index
  • 79°F sea temperature in May in Haikou79
    79°F sea temperature

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The May weather guide for China (Haikou) 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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How hot is it in Haikou in May?

Daytime temperatures usually reach 90°F in Haikou in May with very high heat and humidity, falling to 75°F at night.

How sunny is it in Haikou in May?

There are normally 7 hours of bright sunshine each day in Haikou in May - that's 54% of daylight hours.

How warm is the sea around Haikou in May?

The average sea temperature around Haikou in May is 79°F.

Does it rain in Haikou in May?

There are usually 16 days with some rain in Haikou in May and the average monthly rainfall is 7.4 inches.

What is the chance of a typhoon in Haikou in May?

On average less than 1 day in May in Haikou is likely to be affected by the passage of one or more tropical storms.

Haikou May sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st May 2026 06:10 19:02
Saturday, 16th May 2026 06:02 19:08
Sunday, 31st May 2026 05:59 19:14

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