The climate in Martinsville during December can be summarized as cool and a little damp.
December is in the winter in Martinsville and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a cold 10°C (49°F), whilst at night -1°C (30°F) is normal.
| Daytime temperature | 9.6°C 49.3°F |
|---|---|
| Nightly temperature | -1°C 30.2°F |
| Average temperature | 4.3°C 39.7°F |
| Daily sunshine | 5.5 hrs |
| Avg rainfall | 80 mm 3.2 ins |
| Rainy days | 9 days |
| Sea temperature | 15°C 58.9°F |
| Humidity | 67% |
| Windspeed | 13.3kph 8 mph |
On average December is the 2nd driest month of the year in Martinsville with around 80mm 3.2 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.5 hours of sunshine per day.
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 Martinsville in December 2025.
Best places to visit in December
| Hottest month: | July | 30.2°C 86.4°F |
|---|---|---|
| Driest month: | November | 77mm 3ins |
| Sunniest month: | June | 9.6hrs |
| Coldest month: | January | 7.2°C 45°F |
| Wettest month: | July | 116mm 4.6ins |