Monthly Climate
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Best time to visit Eugene

September is the best time to visit Eugene for general sightseeing, with average highs of 25 °C and about 5 wet days. The comfortable season runs roughly June 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 September comfort 93/100
The least cloud August 28 % average cloud cover
The least rain July 9 mm
Warmth August 29 °C
Cooler weather December 8.5 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days
1 September 93 25 °C 5
2 June 91 22 °C 7
3 July 87 28 °C 2
4 August 86 29 °C 2
5 May 79 19 °C 11
6 October 75 18 °C 11
7 April 56 15 °C 16
8 March 45 13 °C 17
9 November 43 12 °C 16
10 February 40 11 °C 15
11 January 31 9.4 °C 17
12 December 27 8.5 °C 17

When to think twice

December scores lowest with about 17 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 9.4 °C 174 mm 75 %
February 11.2 °C 137 mm 72 %
March 13.2 °C 160 mm 73 %
April 15.4 °C 131 mm 71 %
May 19.1 °C 83 mm 63 %
June 22.4 °C 45 mm 53 %
July 28.0 °C 9 mm 28 %
August 28.5 °C 13 mm 28 %
September 25.3 °C 40 mm 37 %
October 18.2 °C 103 mm 56 %
November 11.9 °C 185 mm 73 %
December 8.5 °C 209 mm 76 %

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.