Monthly Climate
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Best time to visit Imabari

October is the best time to visit Imabari for general sightseeing, with average highs of 21 °C and about 10 wet days. The comfortable season runs roughly April to May. 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 88/100
A beach holiday September sea 27 °C
The least cloud November 53 % average cloud cover
The least rain January 68 mm
Warmth August 30 °C
Cooler weather January 8.5 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 October 88 21 °C 10 70
2 May 87 22 °C 11 50
3 April 78 18 °C 11 24
4 November 77 16 °C 9 41
5 June 74 25 °C 15 65
6 September 71 27 °C 13 78
7 July 58 29 °C 15 74
8 March 57 13 °C 12 6
9 August 56 30 °C 13 75
10 December 53 11 °C 11 18
11 February 47 9.5 °C 10 11
12 January 43 8.5 °C 11 11

For a beach holiday

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

Month Sea Air Sunshine Beach score
January 15 °C 8.5 °C 58 % 11
February 13 °C 9.5 °C 59 % 11
March 13 °C 13 °C 59 % 6
April 15 °C 18 °C 60 % 24
May 18 °C 22 °C 64 % 50
June 22 °C 25 °C 78 % 65
July 25 °C 29 °C 70 % 74
August 28 °C 30 °C 60 % 75
September 27 °C 27 °C 62 % 78
October 24 °C 21 °C 53 % 70
November 20 °C 16 °C 53 % 41
December 17 °C 11 °C 54 % 18

When to think twice

January scores lowest with about 11 wet days and highs near 8.5 °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 68 mm 58 %
February 9.5 °C 79 mm 59 %
March 12.7 °C 118 mm 59 %
April 17.6 °C 132 mm 60 %
May 21.8 °C 152 mm 64 %
June 25.0 °C 250 mm 78 %
July 28.6 °C 214 mm 70 %
August 29.8 °C 141 mm 60 %
September 26.5 °C 193 mm 62 %
October 21.4 °C 145 mm 53 %
November 16.1 °C 82 mm 53 %
December 10.8 °C 79 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.