Typical December weather
Cape Cod
Massachusetts · December
45° days
29° nights
about 13 rainy or snowy days · 9 hours of daylight · ocean 44°
What to pack
- Warm coat
- Umbrella
What December feels like
December turns over more water and more genuinely wet days than any other month here, and the wind off the sea makes the Cape feel like a place that would rather be left alone. The Christmas Stroll weekends in Falmouth and Chatham are the exception — the towns light up, then go dark again.
Expect about 13 days with something falling — rain, snow, or the sloppy mix in between. about 21 nights dip below freezing.
Can you swim?
The ocean runs about 44° — frigid — locals in wetsuits only.
The numbers
| Typical high | 45° |
|---|---|
| Typical low | 29° |
| Days with rain or snow | 13 |
| Rain or melted snow | 4.7 in |
| Water temperature | 44° |
| Sunrise / sunset (mid-month) | 7:01 am / 4:11 pm |