Plymouth, Massachusetts: vitamin D, best months and travel guide
Pilgrim landing site and a harbour town. Best for: history fans, families.
The best months for vitamin D in Plymouth are June to August, when a full dose takes about 7 minutes at midday. Too cool from September to May.
Plymouth month by month
| Month | Rating | Sun window | Peak UV | Full dose, age 30 | Afternoon high | Rainy days |
|---|---|---|---|---|---|---|
| January | Too cold | 0.3 h | 1.9 | – | 3°C | 10/30 |
| February | Too cold | 3.0 h | 3.1 | 17 min | 5°C | 5/30 |
| March | Too cold | 4.2 h | 4.0 | 13 min | 9°C | 10/30 |
| April | Too cold | 6.1 h | 5.3 | 10 min | 13°C | 5/30 |
| May | Too cold | 7.4 h | 6.2 | 9 min | 18°C | 10/30 |
| June | Excellent | 8.4 h | 7.2 | 7 min | 26°C | 7/30 |
| July | Excellent | 8.0 h | 6.7 | 8 min | 28°C | 3/30 |
| August | Excellent | 7.8 h | 6.8 | 8 min | 27°C | 5/30 |
| September | Too cold | 5.4 h | 4.9 | 11 min | 22°C | 5/30 |
| October | Too cold | 4.8 h | 4.1 | 13 min | 17°C | 1/30 |
| November | Too cold | 2.3 h | 2.7 | 20 min | 13°C | 5/30 |
| December | Too cold | 0.0 h | 2.0 | – | 5°C | 13/30 |
Sun window is the number of hours a day with UV Index 2.5 or higher. Full dose is the minutes at midday for about 1,000 IU of vitamin D with a quarter of the body bare, for skin type III. Rainy days are days with at least 1 mm out of 30.
What to expect in Plymouth
Pilgrim landing site and a harbour town. A short beach season from late June to early September, cool and sometimes foggy mornings, and a cold Atlantic. Many islands get busy and pricey in July and August.
In Plymouth afternoon highs average from 3°C in January to 28°C in July. The wettest month is December (about 13 rainy days out of 30) and the driest is October (1). Midday UV peaks at 7.2 in June.
More about Massachusetts · Massachusetts in June · Best places in June
Questions about Plymouth
When is the best time to visit Plymouth for vitamin D?
The best months for vitamin D in Plymouth are June to August, when a full dose takes about 7 minutes at midday.
What is the weather like in Plymouth?
Afternoon highs average from 3°C in January to 28°C in July. The wettest month is December, with about 13 rainy days out of 30.
Which months should I avoid in Plymouth?
For a beach stay, avoid the months when it is too cool from September to May.