Oyonnax Weather in December
What's the weather like in Oyonnax (Rhône-Alpes) in December 2025?
The climate in Oyonnax during December can be summarized as cool and a little damp.
December is in the winter in Oyonnax and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around a cold 4°C (39°F), whilst at night -2°C (29°F) is normal.
| Daytime temperature | 3.7°C 38.7°F |
|---|---|
| Nightly temperature | -1.5°C 29.3°F |
| Average temperature | 1.1°C 34°F |
| Daily sunshine | 2 hrs |
| Avg rainfall | 88 mm 3.5 ins |
| Rainy days | 15 days |
| Sea temperature | 12.6°C 54.7°F |
| Humidity | 83% |
| Windspeed | 10.8kph 7 mph |
On average December is the 6th wettest month of the year in Oyonnax with around 88mm 3.5 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 15 days, although this may vary considerably.
On the flip side this corresponds to an average of 2 hours of sunshine per day.
December temperatures in Oyonnax
December rainfall
December hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Oyonnax in December 2025.
Other monthly averages
Best places to visit in December
Oyonnax weather stats
| Hottest month: | July | 23.6°C 74.5°F |
|---|---|---|
| Driest month: | July | 74mm 2.9ins |
| Sunniest month: | July | 9.4hrs |
| Coldest month: | January | 2.9°C 37.2°F |
| Wettest month: | May | 96mm 3.8ins |
© Google
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