Monthly Climate
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Best time to visit Aomori

June is the best time to visit Aomori for general sightseeing, with average highs of 22 °C and about 12 wet days. The comfortable season runs roughly May to June. The sea stays above 20 °C from August to September.

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 June comfort 84/100
A beach holiday August sea 23 °C
The least cloud April 61 % average cloud cover
The least rain February 71 mm
Warmth August 27 °C
Cooler weather January -0.1 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 June 84 22 °C 12 39
2 September 83 23 °C 13 65
3 May 76 18 °C 13 20
4 July 73 26 °C 15 57
5 October 69 17 °C 13 31
6 August 68 27 °C 15 71
7 April 49 12 °C 13 4
8 November 37 9.4 °C 15 5
9 February 22 0.8 °C 13 5
10 January 20 -0.1 °C 14 3
11 March 19 4.7 °C 15 1
12 December 18 2.6 °C 16 0

For a beach holiday

August scores highest, with a sea temperature of 23 °C and air temperatures around 27 °C. The sea is above 20 °C from August to September.

Month Sea Air Sunshine Beach score
January 10 °C -0.1 °C 71 % 3
February 8.2 °C 0.8 °C 70 % 5
March 7.6 °C 4.7 °C 64 % 1
April 7.9 °C 12 °C 61 % 4
May 11 °C 18 °C 65 % 20
June 15 °C 22 °C 73 % 39
July 19 °C 26 °C 77 % 57
August 23 °C 27 °C 73 % 71
September 22 °C 23 °C 70 % 65
October 19 °C 17 °C 63 % 31
November 15 °C 9.4 °C 65 % 5
December 12 °C 2.6 °C 70 % 0

When to think twice

December scores lowest with about 16 wet days and highs near 2.6 °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 -0.1 °C 73 mm 71 %
February 0.8 °C 71 mm 70 %
March 4.7 °C 90 mm 64 %
April 12.4 °C 88 mm 61 %
May 18.5 °C 100 mm 65 %
June 22.4 °C 104 mm 73 %
July 25.5 °C 153 mm 77 %
August 26.7 °C 170 mm 73 %
September 22.9 °C 146 mm 70 %
October 16.6 °C 113 mm 63 %
November 9.4 °C 96 mm 65 %
December 2.6 °C 94 mm 70 %

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.