Monthly Climate
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Best time to visit Weihai

September is the best time to visit Weihai for general sightseeing, with average highs of 24 °C and about 5 wet days. The comfortable season runs roughly May to June. The sea stays above 20 °C from July to September.

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 September comfort 88/100
A beach holiday August sea 24 °C
The least cloud October 43 % average cloud cover
The least rain January 18 mm
Warmth August 27 °C
Cooler weather January 1.8 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 September 88 24 °C 5 85
2 June 87 24 °C 6 67
3 October 86 18 °C 5 56
4 May 85 19 °C 6 35
5 August 68 27 °C 9 86
6 July 67 27 °C 10 79
7 April 65 13 °C 5 22
8 November 56 11 °C 7 18
9 March 40 7.2 °C 4 24
10 February 32 3.1 °C 3 24
11 December 32 4.6 °C 7 17
12 January 31 1.8 °C 4 23

For a beach holiday

August scores highest, with a sea temperature of 24 °C and air temperatures around 27 °C. The sea is above 20 °C from July to September.

Month Sea Air Sunshine Beach score
January 5.5 °C 1.8 °C 60 % 23
February 4.1 °C 3.1 °C 51 % 24
March 4.8 °C 7.2 °C 44 % 24
April 8.2 °C 13 °C 46 % 22
May 13 °C 19 °C 49 % 35
June 18 °C 24 °C 56 % 67
July 22 °C 27 °C 61 % 79
August 24 °C 27 °C 55 % 86
September 23 °C 24 °C 47 % 85
October 20 °C 18 °C 43 % 56
November 14 °C 11 °C 49 % 18
December 9.2 °C 4.6 °C 59 % 17

When to think twice

January scores lowest with about 4 wet days and highs near 1.8 °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 1.8 °C 18 mm 60 %
February 3.1 °C 19 mm 51 %
March 7.2 °C 22 mm 44 %
April 13.2 °C 43 mm 46 %
May 19.0 °C 69 mm 49 %
June 23.6 °C 70 mm 56 %
July 26.6 °C 155 mm 61 %
August 26.9 °C 136 mm 55 %
September 23.6 °C 58 mm 47 %
October 18.1 °C 36 mm 43 %
November 11.2 °C 43 mm 49 %
December 4.6 °C 34 mm 59 %

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.