Haimen, Guangdong Weather by Month and Climate Averages

How much rain does Haimen get?

Haimen gets 1664 mm of precipitation in an average year, spread over about 121 days with measurable rain. That is more rainy days than 67% of China.

June is the wettest month, with 293 mm. October is the driest, with 41 mm. June has the most rainy days, about 17.

The longest dry spell in the last five years lasted 39 days, to November 28, 2023.

Haimen weather by month

Haimen weather in January

In January, Haimen averages a high of 19°C and a low of 12°C. It gets 43 mm of precipitation over about 6 rainy days. The sun is out about 53% of daylight hours. The January record high is 29°C (2000) and the record low is 2°C (1986). January is one of the most comfortable months to visit.

Haimen weather in February

In February, Haimen averages a high of 19°C and a low of 12°C. It gets 53 mm of precipitation over about 9 rainy days. The sun is out about 42% of daylight hours. The February record high is 29°C (2009) and the record low is 2°C (1984). February is one of the most comfortable months to visit.

Haimen weather in March

In March, Haimen averages a high of 22°C and a low of 15°C. It gets 92 mm of precipitation over about 10 rainy days. The sun is out about 39% of daylight hours. The March record high is 32°C (2024) and the record low is 3°C (1986). March is one of the most comfortable months to visit.

Haimen weather in April

In April, Haimen averages a high of 25°C and a low of 19°C. It gets 157 mm of precipitation over about 12 rainy days. The sun is out about 37% of daylight hours. The April record high is 35°C (2025) and the record low is 9°C (1996). April is one of the most comfortable months to visit.

Haimen weather in May

In May, Haimen averages a high of 28°C and a low of 22°C. It gets 208 mm of precipitation over about 14 rainy days. The sun is out about 26% of daylight hours. The May record high is 38°C (2021) and the record low is 15°C (1984).

Haimen weather in June

In June, Haimen averages a high of 31°C and a low of 25°C. It gets 293 mm of precipitation over about 17 rainy days. The sun is out about 12% of daylight hours. The June record high is 37°C (2000) and the record low is 18°C (1981).

Haimen weather in July

In July, Haimen averages a high of 32°C and a low of 26°C. It gets 235 mm of precipitation over about 14 rainy days. The sun is out about 32% of daylight hours. The July record high is 39°C (2008) and the record low is 21°C (1985).

Haimen weather in August

In August, Haimen averages a high of 32°C and a low of 26°C. It gets 292 mm of precipitation over about 15 rainy days. The sun is out about 26% of daylight hours. The August record high is 38°C (2012) and the record low is 22°C (1994).

Haimen weather in September

In September, Haimen averages a high of 31°C and a low of 24°C. It gets 150 mm of precipitation over about 10 rainy days. The sun is out about 43% of daylight hours. The September record high is 38°C (2021) and the record low is 18°C (1971).

Haimen weather in October

In October, Haimen averages a high of 28°C and a low of 21°C. It gets 41 mm of precipitation over about 4 rainy days. The sun is out about 42% of daylight hours. The October record high is 37°C (2024) and the record low is 8°C (1978).

Haimen weather in November

In November, Haimen averages a high of 25°C and a low of 17°C. It gets 51 mm of precipitation over about 5 rainy days. The sun is out about 52% of daylight hours. The November record high is 33°C (2023) and the record low is 4°C (1979). November is one of the most comfortable months to visit.

Haimen weather in December

In December, Haimen averages a high of 21°C and a low of 13°C. It gets 46 mm of precipitation over about 6 rainy days. The sun is out about 49% of daylight hours. The December record high is 30°C (2023) and the record low is 1°C (1991). December is one of the most comfortable months to visit.

Sunshine, humidity and wind in Haimen

January is the sunniest month in Haimen, with sunshine about 53% of daylight hours. June is the cloudiest, at 12%. Over the year the sun shines about 38% of daylight hours. Haimen is cloudier than 69% of China.

Humidity peaks in June at 83% and is lowest in December at 67%.

Haimen has about 44 days a year above 32°C. Haimen is hotter than 64% of China.

Haimen weather records

The hottest temperature on record at the Haimen station is 39°C, on July 27, 2008. The coldest is 1°C, on December 29, 1991.

The wettest day on record brought 396 mm of rain, on May 17, 2006.

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

The annual mean temperature has changed by +0.4°C per decade since 1970.

The best time to visit Haimen

The most comfortable time to visit is typically January to April and November to December, when daytime highs sit near 22°C.

Winter (December–February) is mild, with average highs around 20°C and lows near 12°C.

Spring (March–May) is warm, with average highs around 25°C and lows near 19°C.

Summer (June–August) is hot, with average highs around 32°C and lows near 26°C. It can feel humid.

Autumn (September–November) is hot, with average highs around 28°C and lows near 21°C.

Haimen climate questions

How much rain does Haimen get?

Haimen gets 1664 mm of precipitation in an average year, over about 121 rainy days.

What is the wettest month in Haimen?

June is the wettest month in Haimen, with 293 mm. October is the driest, with 41 mm.

How many rainy days does Haimen have a year?

Haimen has about 121 days with measurable rain in an average year. June has the most, about 17.

What is the hottest month in Haimen?

July is the warmest month in Haimen, with an average high of 32°C.

What is the coldest month in Haimen?

January is the coldest month in Haimen, with an average low of 12°C.

What is the record high temperature in Haimen?

The record high at the Haimen station is 39°C, set on July 27, 2008. The record low is 1°C, on December 29, 1991.

What is the sunniest month in Haimen?

January is the sunniest month in Haimen, with sunshine about 53% of daylight hours. June is the cloudiest.

What is the best time to visit Haimen?

The most comfortable time to visit is typically January to April and November to December, when daytime highs sit near 22°C.