Climate and monthly weather forecast
Sanya, China

The best time to visit Sanya

April is the best period for swimming and other water activities in Sanya, China, as the sea temperature is 26.1°C (79°F), the rain falls for only 5.6 days, and 43mm (1.69") of rainfall is accumulated.

Weather in January

January, the same as December, is another warm winter month in Sanya, China, with an average temperature ranging between max 26.1°C (79°F) and min 18.5°C (65.3°F). With an average high-temperature of 26.1°C (79°F) and an average low-temperature of 18.5°C (65.3°F), January is the coldest month. Weather in January »

Weather in February

February, the last month of the winter in Sanya, is another warm month, with temperature in the range of an average high of 26.8°C (80.2°F) and an average low of 19.8°C (67.6°F). In February, the average high-temperature is relatively the same as in January - a still warm 26.8°C (80.2°F). Weather in February »

Weather in March

March, the first month of the spring in Sanya, is still a warm month, with an average temperature fluctuating between 21.9°C (71.4°F) and 28.6°C (83.5°F). In Sanya, the average high-temperature in March is practically the same as in February - a still moderately hot 28.6°C (83.5°F). Weather in March »

Weather in April

April is a tropical spring month in Sanya, China, with an average temperature fluctuating between 24.2°C (75.6°F) and 30.7°C (87.3°F). An excellent water temperature of 26.1°C (79°F) and only 5.6 rainfall days, with 43mm (1.69") of accumulated rainfall, makes April a prime for swimming and other water activities. Weather in April »

Weather in May

May, the last month of the spring in Sanya, is another tropical month, with an average temperature fluctuating between 25.6°C (78.1°F) and 32°C (89.6°F). May is the warmest month, with an average high-temperature of 32°C (89.6°F) and an average low-temperature of 25.6°C (78.1°F). In Sanya, during 10 rainfall days, 142mm (5.59") of precipitation is typically accumulated. Weather in May »

Weather in June

The first month of the summer, June, is also a hot month in Sanya, China, with an average temperature varying between 31.9°C (89.4°F) and 26.1°C (79°F). In June, the average high-temperature is essentially the same as in May - a still hot 31.9°C (89.4°F). Weather in June »

Weather in July

July, the same as June, in Sanya, China, is a hot summer month, with temperature in the range of an average low of 25.9°C (78.6°F) and an average high of 31.7°C (89.1°F). In Sanya, the average high-temperature in July is almost the same as in June - a still tropical 31.7°C (89.1°F). Weather in July »

Weather in August

August, the last month of the summer in Sanya, is another hot month, with temperature in the range of an average high of 31.4°C (88.5°F) and an average low of 25.5°C (77.9°F). In Sanya, China, the average high-temperature in August is practically the same as in July - a still hot 31.4°C (88.5°F). Weather in August »

Weather in September

The first month of the autumn, September, is also a hot month in Sanya, China, with an average temperature varying between 24.7°C (76.5°F) and 31.2°C (88.2°F). In September, the average high-temperature is relatively the same as in August - a still hot 31.2°C (88.2°F). Weather in September »

Weather in October

October, like September, is a hot autumn month in Sanya, China, with temperature in the range of an average high of 30.2°C (86.4°F) and an average low of 23.4°C (74.1°F). In Sanya, the average high-temperature in October is practically the same as in September - a still hot 30.2°C (86.4°F). Weather in October »

Weather in November

The last month of the autumn, November, is another warm month in Sanya, China, with an average temperature varying between 21.3°C (70.3°F) and 28.5°C (83.3°F). In Sanya, the average high-temperature in November is relatively the same as in October - a moderately hot 28.5°C (83.3°F). Weather in November »

Weather in December

The first month of the winter, December, is also a moderately hot month in Sanya, China, with an average temperature ranging between min 19°C (66.2°F) and max 26.6°C (79.9°F). In December, the average high-temperature is almost the same as in November - a still warm 26.6°C (79.9°F). Weather in December »
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FAQ

What is the coldest month in Sanya?

With an average high-temperature of 26.1°C (79°F) and an average low-temperature of 18.5°C (65.3°F), January is the coldest month.

What is the driest month in Sanya?

The month with the least rainfall in Sanya is January, when the rain falls for 3.4 days and typically collects 8mm (0.31") of precipitation.

How much does it rain in Sanya?

Throughout the year, in Sanya, China, there are 111.1 rainfall days, and 1392mm (54.8") of precipitation is accumulated.

What are the months with the least sunshine in Sanya?

January through March, with an average of 5h of sunshine, are months with the least sunshine in Sanya.

When is the sea coldest in Sanya?

February is the month with the coldest seawater, with an average sea temperature of 23°C (73.4°F).

When is the highest UV index in Sanya?

March through September, with an average maximum UV index of 12, are months with the highest UV index in Sanya.

What is the warmest month in Sanya?

May is the warmest month in Sanya, with an average high-temperature of 32°C (89.6°F) and an average low-temperature of 25.6°C (78.1°F).

What are the months with the most sunshine in Sanya?

The months with the most sunshine are May and July, with an average of 7h of sunshine.

When are the longest days in Sanya?

With an average of 13h and 13min of daylight, June has the longest days of the year.

What is the month with the warmest sea water in Sanya?

The month with the warmest seawater in Sanya is July, with an average sea temperature of 29.8°C (85.6°F).

What is the rainiest month in Sanya?

The month with the most rainfall in Sanya, China, is September, when the rain falls for 17 days and typically aggregates up to 251mm (9.88") of precipitation.

What is the month with the shortest days in Sanya?

December has the shortest days of the year in Sanya, China, with an average of 11h and 4min of daylight.

Is there Daylight Saving Time (DST) in Sanya?

Sanya, China, does not observe Daylight Saving Time (DST). CST timezone is used over the entire year.

What is the month with the lowest UV index in Sanya?

December is the month with the lowest UV index in Sanya, China, with an average maximum UV index of 8.

Average temperature
Sanya, China

Average temperature - Sanya, China

The warmest month (with the highest average high temperature) is May (32°C).
The month with the lowest average high temperature is January (26.1°C).

The month with the highest average low temperature is June (26.1°C).
The coldest month (with the lowest average low temperature) is January (18.5°C).

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Average rainfall
Sanya, China

Average rainfall - Sanya, China

The wettest month (with the highest rainfall) is September (251.4mm).
The driest month (with the least rainfall) is January (8mm).

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Average rainfall days
Sanya, China

Average rainfall days - Sanya, China

The month with the highest number of rainy days is September (17 days).
The month with the least rainy days is January (3.4 days).

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Average sea temperature
Sanya, China

Average sea temperature - Sanya, China

The best month for swimming (with the highest average sea temperature) is July (29.8°C).
The coldest month (with the lowest average sea temperature) is February (23°C).

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Average daylight / Average sunshine
Sanya, China

Average daylight / Average sunshine - Sanya, China

The month with the longest days is June (Average daylight: 13h and 13min).
The month with the shortest days is December (Average daylight: 11h and 4min).

The months with the most sunshine are May and July (Average sunshine: 7h).
The months with the least sunshine are January, February and March (Average sunshine: 5h).

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Average UV index
Sanya, China

Average UV index - Sanya, China

The months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 8).

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