Monthly Climate
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Best time to visit Oulu

July is the best time to visit Oulu for general sightseeing, with average highs of 20 °C and about 12 wet days. The comfortable season runs roughly June to August.

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 July comfort 83/100
A beach holiday July sea 15 °C
The least cloud May 60 % average cloud cover
The least rain February 29 mm
Warmth July 20 °C
Cooler weather February -5.9 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 July 83 20 °C 12 27
2 August 78 18 °C 12 25
3 June 74 16 °C 10 17
4 September 57 12 °C 10 10
5 May 51 11 °C 10 11
6 April 31 4.2 °C 7 16
7 October 29 5.0 °C 10 10
8 March 29 -1.9 °C 8 15
9 February 28 -5.9 °C 8 15
10 January 26 -5.4 °C 9 13
11 December 23 -2.8 °C 10 9
12 November 23 0.3 °C 11 9

For a beach holiday

July scores highest, with a sea temperature of 15 °C and air temperatures around 20 °C. The sea never reaches 20 °C here.

Month Sea Air Sunshine Beach score
January 0 °C -5.4 °C 82 % 13
February -0.2 °C -5.9 °C 77 % 15
March -0.1 °C -1.9 °C 68 % 15
April 0.3 °C 4.2 °C 64 % 16
May 2.9 °C 11 °C 60 % 11
June 9.5 °C 16 °C 62 % 17
July 15 °C 20 °C 62 % 27
August 16 °C 18 °C 66 % 25
September 12 °C 12 °C 70 % 10
October 7.6 °C 5.0 °C 77 % 10
November 3.5 °C 0.3 °C 84 % 9
December 1.0 °C -2.8 °C 83 % 9

When to think twice

November scores lowest with about 11 wet days and highs near 0.3 °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 -5.4 °C 35 mm 82 %
February -5.9 °C 29 mm 77 %
March -1.9 °C 31 mm 68 %
April 4.2 °C 30 mm 64 %
May 11.0 °C 49 mm 60 %
June 16.1 °C 58 mm 62 %
July 19.5 °C 79 mm 62 %
August 17.6 °C 72 mm 66 %
September 12.3 °C 58 mm 70 %
October 5.0 °C 52 mm 77 %
November 0.3 °C 49 mm 84 %
December -2.8 °C 44 mm 83 %

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.