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Climate in Haikou (Hainan)


Average weather, temperature, rainfall, sunshine hours

Flag - China

Haikou, where it is located


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Climate chart - Haikou
Haikou's climate is subtropical, with very mild or pleasantly warm winters and hot, humid and rainy summers. The rains are abundant from May to October.
The city is the capital of the province of Hainan and is located in the far south of China, at 20 degrees north latitude, on the north coast of the island of Hainan.
Winter, from December to February, is very mild, however, the north-east monsoon brings cloudy days, during which there are some drizzles, or fog can form. Sometimes, cold and windy days can occur, with highs around 13 °C (55 °F) or even below. In January 2016, the temperature dropped to 6 °C (43 °F), with a maximum of 8 °C (46.5 °F).
Together with Southern China, Hainan can be hit by typhoons, the tropical cyclones of Southeast Asia. Typically, typhoons occur in this area from June to mid-November, but sometimes (though very rarely) they have affected this area outside of this period, i.e. in April or in May.

Haikou

Best Time



It is difficult to find the best time to visit Haikou, however you can choose the cooler period, from mid-November to the end of March. It must be said that we are on the north side of the island of Hainan, where there is not much sun in this period, and the sea is also cooler than on the southern side.

Haikou - Climate data


In Haikou, the average temperature of the coldest month (January) is of 18.4 °C, that of the warmest month (June) is of 29.5 °C. Here are the average temperatures.
Haikou - Average temperatures (1991-2020)
Temperatures (°C)
MonthMinMaxMean
January15.621.218.4
February16.822.719.8
March19.626.423
April22.829.926.3
May24.832.128.5
June25.733.329.5
July25.833.129.4
August25.632.328.9
September24.930.827.9
October23.428.826.1
November20.625.823.2
December17.322.219.8
Year21.928.325.05

Precipitation amounts to 1625 millimeters per year: it is therefore abundant. It ranges from 20 millimeters in the driest month (January) to 250 millimeters in the wettest one (September). Here is the average precipitation.
Haikou - Average precipitation
MonthRain (mm)Days
January209
February3511
March5010
April10512
May18516
June21016
July21014
August22515
September25015
October20013
November9510
December358
Year1625149

The sea temperature ranges from 21 °C in January, February to 29 °C in June, July, August, September. Here are the average sea temperatures.
Haikou - Sea temperature
MonthTemperatures (°C)
January21
February21
March22
April24
May27
June29
July29
August29
September29
October28
November25">
December23
Year25.6

There are on average around 2070 sunshine hours per year. Here are the average hours of sunshine per day.
Haikou - Sunshine hours
MonthAverageTotal
January3.5110
February3.5100
March4.5135
April5.5170
May7220
June7.5225
July8250
August7220
September6.5195
October5.5175
November5145
December4130
Year5.72070

Haikou - Weather by month

Based on the period 1991-2020
(January - February - March - April - May - June - July - August - September - October - November - December)


January, the coldest month of the year, is generally a warm month. The average temperature is of 18.4 °C, with a minimum of 15.6 °C and a maximum of 21.2 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 10 °C. However, it dropped to 5.9 °C in January 2016.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 28 °C. However, it reached 32.1 °C in January 2006.
Rain iconPrecipitation amounts to 20 mm, distributed over 9 days.
The day lasts on average 11 hours and 5 minutes.
Sun iconThere are on average 3.5 hours of sunshine per day. So, the sun shines 32% of the time.
The average humidity is 84%. Hence, the air is normally humid.
The average wind speed is of 10 kph.
Sea iconThe average sea temperature is of 21 °C. Therefore, the sea is cool for swimming.


February is generally a warm month. The average temperature is of 19.8 °C, with a minimum of 16.8 °C and a maximum of 22.7 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 11 °C. However, it dropped to 7 °C in February 2018.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 31 °C. However, it reached 36.6 °C in February 1994.
Rain iconPrecipitation amounts to 35 mm, distributed over 11 days.
The day lasts on average 11 hours and 30 minutes.
Sun iconThere are on average 3.5 hours of sunshine per day. So, the sun shines 30% of the time.
The average humidity is 85%. Hence, the air is normally humid.
The average wind speed is of 10.1 kph.
Sea iconThe average sea temperature is of 21 °C. Therefore, the sea is cool for swimming.


March is generally a warm to hot, muggy month. The average temperature is of 23 °C, with a minimum of 19.6 °C and a maximum of 26.4 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 14 °C. However, it dropped to 9.9 °C in March 2005.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 34.5 °C. However, it reached 38.1 °C in March 1999.
Rain iconPrecipitation amounts to 50 mm, distributed over 10 days.
The day lasts on average 12 hours and 5 minutes.
Sun iconThere are on average 4.5 hours of sunshine per day. So, the sun shines 37% of the time.
The average humidity is 82%. Hence, the air is normally humid.
The average wind speed is of 10.9 kph.
Sea iconThe average sea temperature is of 22 °C. Therefore, the sea is cool for swimming.


April is generally a warm to hot, muggy month. The average temperature is of 26.3 °C, with a minimum of 22.8 °C and a maximum of 29.9 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 18 °C. However, it dropped to 14.5 °C in April 1996.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 36.5 °C. However, it reached 39.6 °C in April 2001.
Rain iconPrecipitation amounts to 105 mm, distributed over 12 days.
The day lasts on average 12 hours and 35 minutes.
Sun iconThere are on average 5.5 hours of sunshine per day. So, the sun shines 44% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is of 10.6 kph.
Sea iconThe average sea temperature is of 24 °C. Therefore, the sea is warm enough for swimming.


May is generally a very hot, muggy month. The average temperature is of 28.5 °C, with a minimum of 24.8 °C and a maximum of 32.1 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 21.5 °C. However, it dropped to 20 °C in May 2008.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 36.5 °C. However, it reached 38.8 °C in May 2005.
Rain iconPrecipitation amounts to 185 mm, distributed over 16 days.
The day lasts on average 13 hours and 5 minutes.
Sun iconThere are on average 7 hours of sunshine per day. So, the sun shines 54% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is of 9.2 kph.
Sea iconThe average sea temperature is of 27 °C. Therefore, the sea is pleasantly warm and allows long swims.


June, the hottest month of the year, is generally a very hot, muggy month. The average temperature is of 29.5 °C, with a minimum of 25.7 °C and a maximum of 33.3 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 23.5 °C. However, it dropped to 20.2 °C in June 2002.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 36.5 °C. However, it reached 37.7 °C in June 2003.
Rain iconPrecipitation amounts to 210 mm, distributed over 16 days.
The day lasts on average 13 hours and 20 minutes. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
Sun iconThere are on average 7.5 hours of sunshine per day. So, the sun shines 56% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is of 8.8 kph.
Sea iconThe average sea temperature is of 29 °C. Therefore, the sea is pleasantly warm and allows long swims.


July is generally a very hot, muggy month. The average temperature is of 29.4 °C, with a minimum of 25.8 °C and a maximum of 33.1 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 23.5 °C. However, it dropped to 22 °C in July 2004.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 36 °C. However, it reached 37.7 °C in July 1998.
Rain iconPrecipitation amounts to 210 mm, distributed over 14 days.
The day lasts on average 13 hours and 10 minutes.
Sun iconThere are on average 8 hours of sunshine per day. So, the sun shines 62% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is of 9.1 kph.
Sea iconThe average sea temperature is of 29 °C. Therefore, the sea is pleasantly warm and allows long swims.


August is generally a very hot, muggy month. The average temperature is of 28.9 °C, with a minimum of 25.6 °C and a maximum of 32.3 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 23.5 °C. However, it dropped to 22.3 °C in August 2014.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 35 °C. However, it reached 37 °C in August 1994.
Rain iconPrecipitation amounts to 225 mm, distributed over 15 days.
The day lasts on average 12 hours and 50 minutes.
Sun iconThere are on average 7 hours of sunshine per day. So, the sun shines 55% of the time.
The average humidity is 81%. Hence, the air is normally humid.
The average wind speed is of 8.1 kph.
Sea iconThe average sea temperature is of 29 °C. Therefore, the sea is pleasantly warm and allows long swims.


September is generally a very hot, muggy month. The average temperature is of 27.9 °C, with a minimum of 24.9 °C and a maximum of 30.8 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 23 °C. However, it dropped to 19.7 °C in September 1997.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 33.5 °C. However, it reached 35.7 °C in September 2006.
Rain iconPrecipitation amounts to 250 mm, distributed over 15 days.
The day lasts on average 12 hours and 10 minutes.
Sun iconThere are on average 6.5 hours of sunshine per day. So, the sun shines 53% of the time.
The average humidity is 81%. Hence, the air is normally humid.
The average wind speed is of 8.6 kph.
Sea iconThe average sea temperature is of 29 °C. Therefore, the sea is pleasantly warm and allows long swims.


October is generally a warm to hot, muggy month. The average temperature is of 26.1 °C, with a minimum of 23.4 °C and a maximum of 28.8 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 20 °C. However, it dropped to 15.5 °C in October 1991.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 32 °C. However, it reached 34.5 °C in October 2003.
Rain iconPrecipitation amounts to 200 mm, distributed over 13 days.
The day lasts on average 11 hours and 40 minutes.
Sun iconThere are on average 5.5 hours of sunshine per day. So, the sun shines 49% of the time.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is of 10.3 kph.
Sea iconThe average sea temperature is of 28 °C. Therefore, the sea is pleasantly warm and allows long swims.


November is generally a warm to hot, muggy month. The average temperature is of 23.2 °C, with a minimum of 20.6 °C and a maximum of 25.8 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 16 °C. However, it dropped to 11.4 °C in November 2009.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 30 °C. However, it reached 34.7 °C in November 1997.
Rain iconPrecipitation amounts to 95 mm, distributed over 10 days.
The day lasts on average 11 hours and 10 minutes.
Sun iconThere are on average 5 hours of sunshine per day. So, the sun shines 43% of the time.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is of 10.4 kph.
Sea iconThe average sea temperature is of 25 °C. Therefore, the sea is warm enough for swimming.


December is generally a warm month. The average temperature is of 19.8 °C, with a minimum of 17.3 °C and a maximum of 22.2 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 11.5 °C. However, it dropped to 7.4 °C in December 1991.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 27.5 °C. However, it reached 31.2 °C in December 2012.
Rain iconPrecipitation amounts to 35 mm, distributed over 8 days.
The day lasts on average 10 hours and 55 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
Sun iconThere are on average 4 hours of sunshine per day. So, the sun shines 39% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is of 10.4 kph.
Sea iconThe average sea temperature is of 23 °C. Therefore, the sea can be considered barely acceptable for swimming.

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