Monthly Climate
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Best time to visit Okayama

October is the best time to visit Okayama for general sightseeing, with average highs of 22 °C and about 8 wet days. The comfortable season runs roughly April to May.

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 91/100
The least cloud December 47 % average cloud cover
The least rain January 41 mm
Warmth August 31 °C
Cooler weather January 8.8 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days
1 October 91 22 °C 8
2 May 90 23 °C 10
3 April 82 18 °C 10
4 November 78 16 °C 6
5 June 77 26 °C 12
6 September 75 27 °C 11
7 March 60 13 °C 9
8 July 59 30 °C 13
9 August 59 31 °C 10
10 December 57 11 °C 5
11 February 51 9.8 °C 6
12 January 48 8.8 °C 5

When to think twice

January scores lowest with about 5 wet days and highs near 8.8 °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 8.8 °C 41 mm 52 %
February 9.8 °C 51 mm 56 %
March 13.3 °C 92 mm 57 %
April 18.5 °C 109 mm 58 %
May 23.0 °C 123 mm 63 %
June 26.1 °C 178 mm 76 %
July 29.7 °C 185 mm 69 %
August 31.2 °C 108 mm 59 %
September 27.3 °C 163 mm 60 %
October 21.8 °C 113 mm 51 %
November 16.3 °C 57 mm 48 %
December 11.0 °C 47 mm 47 %

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.