Weather by month
Cape Cod
Massachusetts
A sandbar out in the open Atlantic, where the ocean sets the pace: late to warm up in summer, and slow to let go in fall.
The best time to come
September is the local answer — the water is still warm, the traffic has gone, and the light turns long and low. July is the warmest and least rainy of the summer proper; June is the calmer, quieter version of it.
The year at a glance
| Month | Highs / lows | Temperature range | Wet days | Water |
|---|---|---|---|---|
| January | 40° / 24° | 12 | 40° | |
| February | 41° / 25° | 11 | 38° | |
| March | 46° / 30° | 11 | 42° | |
| April | 55° / 39° | 7 | 49° | |
| May | 65° / 48° | 7 | 56° | |
| June ● | 74° / 58° | 6 | 63° | |
| July ● | 81° / 65° | 5 | 69° | |
| August | 80° / 63° | 6 | 69° | |
| September ● | 73° / 56° | 5 | 67° | |
| October | 63° / 46° | 6 | 60° | |
| November | 54° / 37° | 7 | 50° | |
| December | 45° / 29° | 13 | 44° |
Cape Cod facts
- Sits at about 60 ft above sea level.
- 44.7 in of rain in a typical year, with December the wettest month.
- July runs hottest (81° afternoons); January nights are the coldest (24°).