Haikou, Hainan Weather by Month and Climate Averages

How much rain does Haikou get?

Haikou gets 1733 mm of precipitation in an average year, spread over about 130 days with measurable rain. That is more rainy days than 74% of China.

September is the wettest month, with 275 mm. January is the driest, with 24 mm. July has the most rainy days, about 16.

The longest dry spell in the last five years lasted 33 days, to January 21, 2024.

Haikou weather by month

Haikou weather in January

In January, Haikou averages a high of 21°C and a low of 16°C. It gets 24 mm of precipitation over about 7 rainy days. The sun is out about 40% of daylight hours. The January record high is 33°C (1980) and the record low is 5°C (1974). January is one of the most comfortable months to visit.

Haikou weather in February

In February, Haikou averages a high of 23°C and a low of 17°C. It gets 30 mm of precipitation over about 9 rainy days. The sun is out about 40% of daylight hours. The February record high is 37°C (1979) and the record low is 7°C (1984). February is one of the most comfortable months to visit.

Haikou weather in March

In March, Haikou averages a high of 27°C and a low of 20°C. It gets 45 mm of precipitation over about 9 rainy days. The sun is out about 44% of daylight hours. The March record high is 38°C (1999) and the record low is 7°C (1986). March is one of the most comfortable months to visit.

Haikou weather in April

In April, Haikou averages a high of 30°C and a low of 23°C. It gets 80 mm of precipitation over about 9 rainy days. The sun is out about 51% of daylight hours. The April record high is 41°C (2024) and the record low is 14°C (1970).

Haikou weather in May

In May, Haikou averages a high of 32°C and a low of 25°C. It gets 191 mm of precipitation over about 14 rainy days. The sun is out about 36% of daylight hours. The May record high is 39°C (2023) and the record low is 16°C (1984).

Haikou weather in June

In June, Haikou averages a high of 33°C and a low of 26°C. It gets 216 mm of precipitation over about 15 rainy days. The sun is out about 17% of daylight hours. The June record high is 38°C (1977) and the record low is 21°C (1983).

Haikou weather in July

In July, Haikou averages a high of 33°C and a low of 26°C. It gets 260 mm of precipitation over about 16 rainy days. The sun is out about 35% of daylight hours. The July record high is 38°C (1996) and the record low is 21°C (1985).

Haikou weather in August

In August, Haikou averages a high of 32°C and a low of 26°C. It gets 260 mm of precipitation over about 14 rainy days. The sun is out about 24% of daylight hours. The August record high is 37°C (1977) and the record low is 22°C (1972).

Haikou weather in September

In September, Haikou averages a high of 31°C and a low of 25°C. It gets 275 mm of precipitation over about 13 rainy days. The sun is out about 30% of daylight hours. The September record high is 36°C (1988) and the record low is 19°C (1997).

Haikou weather in October

In October, Haikou averages a high of 29°C and a low of 23°C. It gets 253 mm of precipitation over about 9 rainy days. The sun is out about 31% of daylight hours. The October record high is 34°C (1974) and the record low is 16°C (1978).

Haikou weather in November

In November, Haikou averages a high of 26°C and a low of 21°C. It gets 56 mm of precipitation over about 8 rainy days. The sun is out about 46% of daylight hours. The November record high is 34°C (1997) and the record low is 10°C (1987). November is one of the most comfortable months to visit.

Haikou weather in December

In December, Haikou averages a high of 23°C and a low of 18°C. It gets 41 mm of precipitation over about 8 rainy days. The sun is out about 36% of daylight hours. The December record high is 31°C (2012) and the record low is 6°C (1975). December is one of the most comfortable months to visit.

Sunshine, humidity and wind in Haikou

April is the sunniest month in Haikou, with sunshine about 51% of daylight hours. June is the cloudiest, at 17%. Over the year the sun shines about 36% of daylight hours. Haikou is cloudier than 74% of China.

Humidity peaks in February at 84% and is lowest in December at 76%.

Haikou has about 92 days a year above 32°C. Haikou is hotter than 97% of China.

Haikou weather records

The hottest temperature on record at the Haikou station is 41°C, on April 30, 2024. The coldest is 5°C, on January 2, 1974.

The wettest day on record brought 391 mm of rain, on July 18, 2014.

39 all-time records have been set at the station since 1970.

The annual mean temperature has changed by +0.2°C per decade since 1970.

The best time to visit Haikou

The most comfortable time to visit is typically January to March and November to December, when daytime highs sit near 24°C.

Winter (December–February) is warm, with average highs around 22°C and lows near 17°C.

Spring (March–May) is hot, with average highs around 30°C and lows near 23°C.

Summer (June–August) is hot, with average highs around 33°C and lows near 26°C. It can feel humid.

Autumn (September–November) is hot, with average highs around 29°C and lows near 23°C.

Haikou climate questions

How much rain does Haikou get?

Haikou gets 1733 mm of precipitation in an average year, over about 130 rainy days.

What is the wettest month in Haikou?

September is the wettest month in Haikou, with 275 mm. January is the driest, with 24 mm.

How many rainy days does Haikou have a year?

Haikou has about 130 days with measurable rain in an average year. July has the most, about 16.

What is the hottest month in Haikou?

June is the warmest month in Haikou, with an average high of 33°C.

What is the coldest month in Haikou?

January is the coldest month in Haikou, with an average low of 16°C.

What is the record high temperature in Haikou?

The record high at the Haikou station is 41°C, set on April 30, 2024. The record low is 5°C, on January 2, 1974.

What is the sunniest month in Haikou?

April is the sunniest month in Haikou, with sunshine about 51% of daylight hours. June is the cloudiest.

What is the best time to visit Haikou?

The most comfortable time to visit is typically January to March and November to December, when daytime highs sit near 24°C.