Monthly Climate
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Best time to visit Beihai

December is the best time to visit Beihai for general sightseeing, with average highs of 20 °C and about 5 wet days. The comfortable season runs roughly November to March. The sea stays above 20 °C from March to December.

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 December comfort 92/100
A beach holiday November sea 24 °C
The least cloud October 43 % average cloud cover
The least rain February 24 mm
Warmth July 30 °C
Cooler weather January 18 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 December 92 20 °C 5 68
2 February 90 20 °C 5 60
3 November 89 24 °C 5 90
4 March 87 23 °C 7 71
5 January 86 18 °C 6 53
6 October 72 28 °C 8 89
7 April 72 26 °C 10 83
8 May 50 29 °C 18 73
9 September 47 29 °C 19 68
10 August 41 30 °C 25 65
11 June 40 30 °C 23 66
12 July 39 30 °C 22 65

For a beach holiday

November scores highest, with a sea temperature of 24 °C and air temperatures around 24 °C. The sea is above 20 °C from March to December.

Month Sea Air Sunshine Beach score
January 19 °C 18 °C 62 % 53
February 19 °C 20 °C 64 % 60
March 21 °C 23 °C 64 % 71
April 24 °C 26 °C 60 % 83
May 27 °C 29 °C 69 % 73
June 29 °C 30 °C 84 % 66
July 29 °C 30 °C 78 % 65
August 30 °C 30 °C 76 % 65
September 29 °C 29 °C 62 % 68
October 27 °C 28 °C 43 % 89
November 24 °C 24 °C 45 % 90
December 21 °C 20 °C 54 % 68

When to think twice

July 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 18.4 °C 32 mm 62 %
February 19.8 °C 24 mm 64 %
March 22.9 °C 44 mm 64 %
April 26.3 °C 68 mm 60 %
May 28.9 °C 166 mm 69 %
June 30.0 °C 306 mm 84 %
July 30.2 °C 329 mm 78 %
August 30.0 °C 332 mm 76 %
September 29.5 °C 203 mm 62 %
October 27.7 °C 69 mm 43 %
November 24.4 °C 45 mm 45 %
December 20.0 °C 33 mm 54 %

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.