Monthly weather forecast and climate
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 43.3mm (1.7") of rainfall is accumulated.

Weather in January

January, like December, in Sanya, China, is a moderately hot winter month, with average temperature varying between 18.5°C (65.3°F) and 26.1°C (79°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. The month with the least rainfall is January when the rain falls for 3.4 days and typically collects 8mm (0.31") of precipitation. Weather in January »

Weather in February

The last month of the winter, February, is also a moderately hot month in Sanya, China, with average temperature varying between 26.8°C (80.2°F) and 19.8°C (67.6°F). In Sanya, the average high-temperature in February is almost the same as in January - a still moderately hot 26.8°C (80.2°F). Weather in February »

Weather in March

The first month of the spring, March, is also a moderately hot month in Sanya, China, with average temperature ranging between min 21.9°C (71.4°F) and max 28.6°C (83.5°F). In March, the average high-temperature 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 hot spring month in Sanya, China, with average temperature varying between 30.7°C (87.3°F) and 24.2°C (75.6°F). The ideal sea water temperature of 26.1°C (79°F) and only 5.6 rainfall days, with 43.3mm (1.7") of accumulated rainfall, makes April the best time for swimming and other water activities. Weather in April »

Weather in May

May, the last month of the spring, in Sanya, is also a hot month, with average temperature ranging between max 32°C (89.6°F) and min 25.6°C (78.1°F). The warmest month is May, with an average high-temperature of 32°C (89.6°F) and an average low-temperature of 25.6°C (78.1°F). Weather in May »

Weather in June

The first month of the summer, June, is still a hot month in Sanya, China, with average temperature varying between 31.9°C (89.4°F) and 26.1°C (79°F). In Sanya, the average high-temperature in June is relatively the same as in May - a still tropical 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 average temperature ranging between min 25.9°C (78.6°F) and max 31.7°C (89.1°F). In July, the average high-temperature is practically 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 tropical month, with temperature in the range of an average low of 25.5°C (77.9°F) and an average high of 31.4°C (88.5°F). In Sanya, the average high-temperature is essentially the same as in July - a still tropical 31.4°C (88.5°F). Weather in August »

Weather in September

September, the first month of the autumn, in Sanya, is still a tropical month, with average temperature ranging between min 24.7°C (76.5°F) and max 31.2°C (88.2°F). In September, the average high-temperature is almost 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 average temperature fluctuating between 23.4°C (74.1°F) and 30.2°C (86.4°F). In Sanya, the average high-temperature is relatively the same as in September - a still hot 30.2°C (86.4°F). Weather in October »

Weather in November

November, the last month of the autumn, in Sanya, is another warm month, with average temperature varying between 28.5°C (83.3°F) and 21.3°C (70.3°F). In Sanya, the average high-temperature in November is practically 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 still a warm month in Sanya, China, with temperature in the range of an average high of 26.6°C (79.9°F) and an average low of 19°C (66.2°F). In Sanya, the average high-temperature is almost the same as in November - a still moderately hot 26.6°C (79.9°F). Weather in December »
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FAQ

What is the coldest month in Sanya?

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

How many days does it rain in Sanya?

In Sanya, during the entire year, the rain falls for 111.1 days and collects up to 1392.1mm (54.81") of precipitation.

What is the driest month in Sanya?

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

What is the month with the least sunshine in Sanya?

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

What month is the sea coldest in Sanya?

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

What are the months with the highest UV index in Sanya?

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

What is the warmest month in Sanya?

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

What is the month with the most sunshine in Sanya?

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

When are the longest days in Sanya?

The month with the longest days is June, with an average of 13.2h of daylight.

What month is the sea warmest 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 wettest month in Sanya?

September is the month with the most rainfall in Sanya. Rain falls for 17 days and accumulates 251.4mm (9.9") of precipitation.

What is the month with the shortest days in Sanya?

With an average of 11h of daylight, December has the shortest days of the year in Sanya.

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

The month with the lowest UV index is December, 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: 13.2h).
The month with the shortest days is December (Average daylight: 11h).

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

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Average UV index
Sanya, China

Average UV index - Sanya, China

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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