Monthly Climate
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Best time to visit Sanya

January is the best time to visit Sanya for general sightseeing, with average highs of 24 °C and about 2 wet days. The comfortable season runs roughly December to February.

It depends what you are going for

One month rarely wins on everything. These are the best months on each measure taken on its own.

If you want Best month On that measure
Sightseeing and walking January comfort 89/100
A beach holiday March sea 24 °C
The least cloud November 47 % average cloud cover
The least rain February 9 mm
Warmth June 30 °C
Cooler weather January 24 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 January 89 24 °C 2 92
2 December 87 25 °C 3 95
3 February 87 25 °C 2 94
4 March 77 27 °C 4 97
5 November 77 27 °C 5 95
6 April 64 29 °C 8 87
7 October 59 28 °C 13 76
8 September 46 29 °C 22 69
9 May 45 30 °C 19 68
10 August 42 30 °C 24 68
11 July 42 30 °C 23 68
12 June 40 30 °C 22 66

For a beach holiday

March scores highest, with a sea temperature of 24 °C and air temperatures around 27 °C. The sea never reaches 20 °C here.

Month Sea Air Sunshine Beach score
January 23 °C 24 °C 50 % 92
February 23 °C 25 °C 52 % 94
March 24 °C 27 °C 54 % 97
April 26 °C 29 °C 55 % 87
May 28 °C 30 °C 70 % 68
June 29 °C 30 °C 82 % 66
July 29 °C 30 °C 77 % 68
August 29 °C 30 °C 78 % 68
September 29 °C 29 °C 73 % 69
October 28 °C 28 °C 57 % 76
November 26 °C 27 °C 47 % 95
December 25 °C 25 °C 50 % 95

When to think twice

June scores lowest with about 22 wet days and highs near 30 °C. That does not make it a bad month — it depends entirely on what you are travelling for. The numbers are all here; the judgement is yours.

The full year

Month Avg high Rainfall Cloud
January 24.0 °C 12 mm 50 %
February 25.1 °C 9 mm 52 %
March 27.1 °C 18 mm 54 %
April 29.1 °C 52 mm 55 %
May 30.3 °C 132 mm 70 %
June 30.4 °C 207 mm 82 %
July 30.0 °C 268 mm 77 %
August 29.9 °C 248 mm 78 %
September 29.4 °C 253 mm 73 %
October 28.4 °C 177 mm 57 %
November 26.9 °C 51 mm 47 %
December 24.6 °C 27 mm 50 %

Data sources and method

Normal period
1991–2020
Dataset version
era5-1991-2020-scores1.1
Last processed

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: comfort score, beach score, season boundaries. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.