Monthly Climate
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Best time to visit Yokohama

October is the best time to visit Yokohama for general sightseeing, with average highs of 20 °C and about 12 wet days. The comfortable season runs roughly September to November. The sea stays above 20 °C from June to October.

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 October comfort 80/100
A beach holiday August sea 26 °C
The least cloud January 43 % average cloud cover
The least rain December 63 mm
Warmth August 28 °C
Cooler weather January 8.5 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 October 80 20 °C 12 57
2 May 80 20 °C 11 45
3 June 75 23 °C 14 59
4 November 71 16 °C 9 38
5 September 70 25 °C 13 76
6 April 68 16 °C 11 22
7 July 65 26 °C 12 79
8 August 62 28 °C 11 84
9 December 54 11 °C 7 26
10 March 49 12 °C 12 7
11 January 44 8.5 °C 7 19
12 February 44 9.1 °C 8 14

For a beach holiday

August scores highest, with a sea temperature of 26 °C and air temperatures around 28 °C. The sea is above 20 °C from June to October.

Month Sea Air Sunshine Beach score
January 15 °C 8.5 °C 43 % 19
February 13 °C 9.1 °C 51 % 14
March 14 °C 12 °C 59 % 7
April 16 °C 16 °C 62 % 22
May 18 °C 20 °C 68 % 45
June 21 °C 23 °C 80 % 59
July 24 °C 26 °C 73 % 79
August 26 °C 28 °C 62 % 84
September 25 °C 25 °C 65 % 76
October 22 °C 20 °C 61 % 57
November 20 °C 16 °C 54 % 38
December 17 °C 11 °C 45 % 26

When to think twice

February scores lowest with about 8 wet days and highs near 9.1 °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 8.5 °C 73 mm 43 %
February 9.1 °C 74 mm 51 %
March 12.0 °C 125 mm 59 %
April 16.3 °C 117 mm 62 %
May 20.3 °C 129 mm 68 %
June 23.1 °C 174 mm 80 %
July 26.5 °C 143 mm 73 %
August 28.0 °C 104 mm 62 %
September 25.1 °C 185 mm 65 %
October 20.3 °C 210 mm 61 %
November 15.6 °C 94 mm 54 %
December 11.0 °C 63 mm 45 %

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.