Monthly Climate
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Best time to visit Nishio

October is the best time to visit Nishio for general sightseeing, with average highs of 21 °C and about 10 wet days. 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 87/100
A beach holiday September sea 26 °C
The least cloud December 37 % average cloud cover
The least rain January 54 mm
Warmth August 30 °C
Cooler weather January 8.6 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 October 87 21 °C 10 67
2 May 86 22 °C 10 54
3 April 76 18 °C 10 29
4 November 76 16 °C 7 44
5 June 75 25 °C 14 69
6 September 72 27 °C 12 81
7 July 60 28 °C 14 76
8 August 58 30 °C 12 77
9 March 56 13 °C 10 11
10 December 55 11 °C 6 29
11 February 47 9.5 °C 7 18
12 January 45 8.6 °C 5 21

For a beach holiday

September scores highest, with a sea temperature of 26 °C and air temperatures around 27 °C. The sea is above 20 °C from June to October.

Month Sea Air Sunshine Beach score
January 14 °C 8.6 °C 40 % 21
February 13 °C 9.5 °C 46 % 18
March 14 °C 13 °C 51 % 11
April 15 °C 18 °C 56 % 29
May 18 °C 22 °C 64 % 54
June 22 °C 25 °C 77 % 69
July 25 °C 28 °C 71 % 76
August 27 °C 30 °C 59 % 77
September 26 °C 27 °C 60 % 81
October 22 °C 21 °C 53 % 67
November 19 °C 16 °C 44 % 44
December 17 °C 11 °C 37 % 29

When to think twice

January scores lowest with about 5 wet days and highs near 8.6 °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 8.6 °C 54 mm 40 %
February 9.5 °C 65 mm 46 %
March 13.0 °C 107 mm 51 %
April 17.7 °C 119 mm 56 %
May 22.0 °C 138 mm 64 %
June 25.1 °C 187 mm 77 %
July 28.4 °C 182 mm 71 %
August 29.9 °C 111 mm 59 %
September 26.7 °C 206 mm 60 %
October 21.4 °C 184 mm 53 %
November 16.1 °C 87 mm 44 %
December 10.9 °C 57 mm 37 %

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.