Weather in Haikou in May 2026
- May is usually the wettest month of the year in Haikou;
Average weather
Average temperature in Haikou in May
The expected average maximum temperature in May is +88°F with a maximum of +95°F and a minimum of +75°F.
The average maximum temperature goes up 36% by the end of the month, compared with the beginning of the month, from +82°F to +90°F.
Is Haikou warm or cold in May?
Haikou is typically warm in May.
Maximum temperatures go up compared to the previous month from +82°F to +86°F. The minimum temperature also goes up from +73°F to +77°F.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how May is compared to other months in Haikou:
Climate in Haikou in May
| April | May | June | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +82°F | +86°F | +88°F | ||||
| Min. temperature | ||||||
| +59°F | +66°F | +72°F | ||||
| Max. temperature | ||||||
| +99°F | +97°F | +99°F | ||||
| Rainfall | ||||||
| 75 mm | 133 mm | 143 mm | ||||
| Wind | ||||||
| 3 m/s | 2 m/s | 2 m/s | ||||
| Humidity | ||||||
| 85% | 85% | 83% | ||||
| Air pressure | ||||||
| 1009 HPa | 1006 HPa | 1003 HPa | ||||
| Sunny days | ||||||
| 3 | 2 | 1 | ||||
| Cloudy days | ||||||
| 8 | 5 | 5 | ||||
| Rainy days | ||||||
| 18 | 22 | 22 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
May weather is still as ok as in April. It’s getting warmer as May arrives. The average maximum temperature goes up from +82°F to +86°F during the day. Prepare for more rain. Average rainfall goes from 75 mm to 133 mm. Humidity levels don’t change as the month goes on, averaging around 85%. Winds are calmer in comparison to April, going down from 3 m/s to 2 m/s on average. The days becoming less sunny, going from 3 sunny days in April to 2 in May.
June brings much the same weather, it remains ok.
Wind
The average wind speed is 4 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Haikou is gradually decreasing during May, going from 4 m/s to 2 m/s over the course of the month.
Rain
How was the weather last May in Haikou?
Climate Change Over the Years
The climate in Haikou in May has not changed that much over the last 43 years.
The average temperature was the lowest in 1984 (+78°F) and the highest in 2019 (+82°F). The driest year was 1991 with only 799 mm of rainfall, and the wettest year was 1982 with 1827 mm.
FAQ
Is May a good time to visit Haikou?
Can you sunbathe in Haikou in May?
Is Haikou rainy in May?
Is it sunny in Haikou in May?
Other cities in China
Monthly weather in Haikou
Source of the data
For this page, we’ve looked at the typical weather in Haikou, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
