Monthly Climate
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Best time to visit Matsuyama

October is the best time to visit Matsuyama for general sightseeing, with average highs of 22 °C and about 9 wet days. The comfortable season runs roughly April to May. The sea stays above 20 °C from June to November.

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 89/100
A beach holiday September sea 25 °C
The least cloud November 51 % average cloud cover
The least rain January 71 mm
Warmth August 31 °C
Cooler weather January 8.8 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 October 89 22 °C 9 72
2 May 87 23 °C 11 51
3 April 81 18 °C 11 27
4 November 78 17 °C 9 45
5 June 70 26 °C 16 63
6 September 68 27 °C 13 79
7 March 58 13 °C 13 5
8 July 53 30 °C 16 72
9 December 53 11 °C 11 21
10 August 51 31 °C 15 70
11 February 48 9.9 °C 10 10
12 January 42 8.8 °C 11 11

For a beach holiday

September scores highest, with a sea temperature of 25 °C and air temperatures around 27 °C. The sea is above 20 °C from June to November.

Month Sea Air Sunshine Beach score
January 15 °C 8.8 °C 58 % 11
February 13 °C 9.9 °C 57 % 10
March 13 °C 13 °C 58 % 5
April 15 °C 18 °C 60 % 27
May 17 °C 23 °C 65 % 51
June 21 °C 26 °C 79 % 63
July 24 °C 30 °C 70 % 72
August 26 °C 31 °C 61 % 70
September 25 °C 27 °C 61 % 79
October 23 °C 22 °C 52 % 72
November 20 °C 17 °C 51 % 45
December 17 °C 11 °C 53 % 21

When to think twice

January scores lowest with about 11 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 71 mm 58 %
February 9.9 °C 80 mm 57 %
March 13.4 °C 116 mm 58 %
April 18.5 °C 135 mm 60 %
May 22.8 °C 151 mm 65 %
June 25.9 °C 270 mm 79 %
July 29.5 °C 228 mm 70 %
August 30.6 °C 154 mm 61 %
September 27.2 °C 190 mm 61 %
October 22.1 °C 137 mm 52 %
November 16.7 °C 83 mm 51 %
December 11.2 °C 83 mm 53 %

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.