Onset Weather in December

What's the weather like in Onset (Massachusetts) in December 2024?

The climate in Onset during December can be summarized as cool and damp.

December is in the winter in Onset and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a cold 5°C (41°F), whilst at night -4°C (25°F) is normal.

Onset weather averages (imperial / metric)
Daytime temperature 5°C 40.9°F
Nightly temperature -3.8°C 25.3°F
Average temperature 0.6°C 33.1°F
Daily sunshine 5.1 hrs
Avg rainfall 116 mm 4.6 ins
Rainy days 13 days
Sea temperature 8.3°C 46.9°F
Humidity 67%
Windspeed 18.7kph 12 mph

On average December is the 2nd wettest month of the year in Onset with around 116mm 4.6 inches of rain making it a damp time to visit. This rainfall is typically spread over 13 days, although this may vary considerably.

On the flip side this corresponds to an average of 5.1 hours of sunshine per day.

December temperatures in Onset

Onset average temperature in December

December rainfall

Onset average rain in December

December hourly sunshine

Onset average rain in December

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 Onset in December 2024.