The week of 23 June 2025 - 29 June 2025 had an average daily temperature of 31 °C (88 °F) and a minimum (nighttime) temperature of 26 °C (79 °F). Both the daily and night temperatures in Sanya are roughly same as the long-term average, which is around 32 °C (90 °F) and 26 °C (79 °F) respectively. The average temperatures observed during different times of day (based on local time) were as below: 7am 28 °C (82 °F), 10am 31 °C (88 °F), 1pm 31 °C (88 °F), 4pm 30 °C (86 °F), 7pm 29 °C (84 °F), 10pm 29 °C (84 °F).

There were 2 days without rain, 3 days with light rain and 2 days with moderate rain during this week. During the whole week, total of 8 mm (0.31 in) of precipitation was observed, which is below the long term average for Sanya, which is 35 mm (1.38 in). From dawn to dusk, there was an average of 29 % cloud coverage during the day.

Average speed of wind was 2.3 m/s. The air pressure varied between 1001 hpa and 1009 hpa. On average, the air humidity in Sanya was 79 %.

During the daytime (from dawn to dusk), there were in average: 7.5 hours clear skies, 4 hours partially overcast skies, 1 hour overcast skies and 2 hours rainy weather. The sunrise on average occurred at 06:08, and the sunset occurred at 19:21.

Weather overview

Sanya (China) in general has a tropical climate. The day temperatures range from 25 °C (77 °F) in January to 32 °C (89 °F) in June. Sea temperatures are in the following range: 23 °C (73 °F) in February to 29 °C (83 °F) in June. The driest month is January with just 3 days of rain, on the contrary, the month when it rains the most is September with 17 days of rain. The highest night temperatures could be experienced in June with 26 °C (79 °F), the lowest in January with 18 °C (64 °F).

January weather

The minimum of the day temperature is observable, with its value being 25 °C (77 °F) in Sanya, while the sea temperature continues to descent, with its value being 23 °C (74 °F). The ongoing tourist season is noticeable. The rainfall amount descents similarly to the previous month, with its value being 22 mm (0.88 in), while the number of rainy days is on its minimum in this month. The minimum of the night temperature is observable, with its value of 18 °C (64 °F).

February weather

There is pending tourist season in Sanya. The minimum of the sea temperature can be noticed, with its value of 23 °C (73 °F), while the beginning of the rise of the day temperature could be noticed, with its value of 26 °C (78 °F). The beginning of the rise of the night temperature could be noticed, its value is 19 °C (66 °F). The minimum of the number of sun hours (without clouds) is observable, with its value being 5 hours. The rainfall amount is on its minimum in this month.

March weather

The tourist season is close to its peak in Sanya. The sea temperature starts to rise, its value is 24 °C (75 °F), while the day temperature rises similarly to the previous month, its value is 28 °C (82 °F). The rise of the night temperature can be observed, with its value of 21 °C (70 °F). The number of sun hours (without clouds) rise's start could be observed in this month. The rainfall amount rise's start could be observed in this month.

April weather

The rise of the day temperature can be observed, with its value being 30 °C (86 °F) in Sanya, and the sea temperature rises similarly to the previous month as well, its value is 26 °C (79 °F). The beginning of the rise of the number of rainy days could be noticed, with its value of 6 days, while the rainfall amount continues to rise, with its value of 54 mm (2.13 in). The tourist season is close to its peak. The number of sun hours (without clouds) rises similarly to the previous month, the value of this measure is 6 hours.

May weather

The day temperature continues to rise, with its value being 32 °C (89 °F) in Sanya, and the rise of the sea temperature can be observed as well, with its value being 28 °C (82 °F). The number of rainy days continues to rise, its value is 11 days, and the rainfall amount rises similarly to the previous month as well, its value is 108 mm (4.23 in). There is pending tourist season in May. The rise of the night temperature can be observed, with its value of 25 °C (78 °F).

June weather

The ongoing tourist season is noticeable in Sanya. The day temperature is on its maximum, with its value of 32 °C (89 °F), and the maximum of the sea temperature is observable as well in this month. The rise of the number of rainy days can be observed, its value is 15 days, and the rainfall amount rises similarly to the previous month as well, with its value of 147 mm (5.78 in). The maximum of the night temperature is observable in June.

July weather

There is pending tourist season in Sanya. The rise of the rainfall amount can be observed, with its value of 164 mm (6.46 in), while the beginning of the descent of the number of rainy days could be noticed, with its value being 14 days. The number of sun hours (without clouds) reaches its maximum, with its value being 7 hours. The humidity is on its minimum in July.

August weather

The beginning of the rise of the number of rainy days could be noticed, its value is 16 days in Sanya, while the rise of the rainfall amount can be observed, its value is 200 mm (7.86 in). The wet season is about to start. The beginning of the descent of the number of sun hours (without clouds) could be noticed, with its value being 6 hours.

September weather

The day temperature starts to descent, the value of this measure is 31 °C (87 °F) in Sanya, and the night temperature starts to descent as well, the value of this measure is 25 °C (76 °F). The wet season is close to its peak. The maximum of the number of rainy days is observable, its value is 17 days, while the rise of the rainfall amount can be observed, the value of this measure is 268 mm (10.55 in). The wind speed is on its minimum, with its value of 3.

October weather

The tourist season slowly starts in Sanya. The day temperature continues to descent, the value of this measure is 30 °C (85 °F), while the sea temperature descent's start could be observed, its value is 27 °C (81 °F). The wet season is close to its peak. The beginning of the descent of the number of rainy days could be noticed, while the rainfall amount reaches its maximum in October.

November weather

The day temperature descents similarly to the previous month, the value of this measure is 28 °C (82 °F) in Sanya, and the descent of the sea temperature can be observed too, its value is 26 °C (79 °F). The tourist season is close to its peak. The rainfall amount starts to descent, its value is 110 mm (4.33 in), while the number of rainy days descents similarly to the previous month, its value is 8 days. The night temperature continues to descent, its value is 21 °C (70 °F).

December weather

The ongoing tourist season is noticeable in December in Sanya. The sea temperature descents similarly to the previous month, and the descent of the day temperature can be observed as well, the value of this measure is 25 °C (78 °F). The rainfall amount continues to descent, the value of this measure is 40 mm (1.58 in). The minimum of the day length is observable, the value of this measure is 11 hours. The descent of the night temperature can be observed, with its value of 19 °C (65 °F).

What temperature can I expect during the day in Sanya in January?

In Sanya in January, the average daily temperatures will be 25 °C (77 °F). The ideal temperature for enjoying sunbathing by the water and a good temperature for other activities. For some people, it will be too hot in the direct sunlight and the stay may not be so pleasant. Don't forget to pack flip-flops, sunscreen, and a hand fan if necessary - it may come in handy.

Is February a good month to visit Sanya?

In February in Sanya, there are ideal conditions for a vacation. The daily temperatures in this month reach pleasant 26 °C (78 °F). The seawater temperature reaches ideal 23 °C (73 °F). At night, temperatures hover around a pleasant 19 °C (66 °F). There are only 4 days of rain in the whole month, so you can leave your umbrella at home.

What is the sea temperature in Sanya in March?

The temperature of the sea in March in Sanya is 24 °C (75 °F). This warm sea is nice for swimming, maybe cold for some, but most people can spend a long time in it.

Is there a wet season in Sanya in April?

No, there is no wet season in Sanya in April - you can expect 6 days of rain during the month.

What is the air temperature in May in Sanya at night?

The average night temperature in May in Sanya is 25 °C (78 °F). The temperature creates a tropical atmosphere and encourages a night of fun, often including a drink to refresh. After all, this temperature is already relatively high.

How humid is Sanya in June?

In Sanya in June, expect humidity around 74 %.

How many hours of sun to expect in Sanya in July?

There is an average length of sunshine of 7 hours per day in Sanya in July.

How windy is it in August in Sanya?

An average wind scale that can be expected in Sanya in August is 3. It is rather a milder or unnoticeable wind, therefore it will not bother you during your holiday.

Is there a dry season in October in Sanya?

No, October is not a dry month in Sanya, expect rain approximately 15 days in a month.

What is the average number of rainy days in November in Sanya?

In Sanya in November, we can expect 8 days to be rainy, that is, days when precipitation exceeds 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 1.9 days of the week, or in general - 27 % days.

Is it hot in Sanya in December?

In December in Sanya, you will enjoy nice warm weather, but it will also be pleasant and you probably won't feel hot.