Hyannis Weather in December

With daytime temperatures of 8°C (46°F) and nighttime lows of 0°C (32°F), December in Hyannis brings low temperatures during the day. It is also the wettest month of the year, so pack an umbrella.

Rainfall in Hyannis in December

The month brings the most rain, so be prepared with an umbrella for the occasional shower. Historically, approximately 14 days this month are expected to have snow/rain, averaging 137 mm (5.4 in). Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Hyannis in December

Daytime temperatures in Hyannis reach 8°C (46°F) in December, dropping to 0°C (32°F) at night. Cold conditions persist throughout the day, so warm clothing is important from the moment you head outside. With lows of 0°C (32°F), nights are freezing. Packing a spare blanket is worth considering if you're staying somewhere that might not be fully heated.

Sunshine in Hyannis in December

The area enjoys a balanced 147 hours of sunlight, ensuring it's neither too overcast nor too sunny.

If you prefer dry days with pleasant temperatures, December may not be the ideal month to visit Hyannis. Our weather planner can help you explore destinations with more pleasant weather conditions.

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• January
• February
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For a detailed overview over the year and the best time to visit the United States of America, check out our Hyannis's climate page.

Hyannis Temperature in December

Min Temperature 0°C (32°F)  

Max Temperature 8°C (46°F)  

Chance of Rain 45%  

Precipitation 137 mm (5.4 in)  

Rainy days 14 days  

Sunshine 147 hours *  

Percentage Sunshine *  

* Data from: Nantucket, the United States of America (43 KM, 27 Miles).

What to Wear in Hyannis in December

Dress warmly and in layers for your trip to Hyannis in December. A good base layer system works wonders. Start with good thermal underwear, add something warm like a fleece sweater, then finish with a waterproof jacket on top. Expect heavy rainfall, so bring good rain protection and waterproof bags. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Hyannis in December

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

5/10

Cycling

4/10

Walking

4/10

Camping

1/10

Outdoor sports

4/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Hyannis's climate page.

More climate data for Hyannis

Temperature Rainfall Sunshine

See the full Hyannis climate overview or explore weather in the United States of America.