Santa Monica, California: vitamin D, best months and travel guide
Pier, boardwalk and wide sandy beach. Best for: families, groups.
The best months for vitamin D in Santa Monica are August, September, when a full dose takes about 7 minutes at midday. Too cool from October to July.
Santa Monica month by month
| Month | Rating | Sun window | Peak UV | Full dose, age 30 | Afternoon high | Rainy days |
|---|---|---|---|---|---|---|
| January | Too cold | 3.6 h | 3.5 | 15 min | 17°C | 5/30 |
| February | Too cold | 5.0 h | 4.3 | 12 min | 16°C | 7/30 |
| March | Too cold | 6.5 h | 5.9 | 9 min | 16°C | 6/30 |
| April | Too cold | 8.1 h | 7.1 | 8 min | 17°C | 1/30 |
| May | Too cold | 8.6 h | 7.6 | 7 min | 18°C | 0/30 |
| June | Too cold | 9.0 h | 7.8 | 7 min | 20°C | 0/30 |
| July | Too cold | 9.4 h | 7.9 | 7 min | 22°C | 0/30 |
| August | Excellent | 8.7 h | 7.5 | 7 min | 23°C | 1/30 |
| September | Excellent | 7.6 h | 6.7 | 8 min | 23°C | 1/30 |
| October | Too cold | 6.4 h | 5.5 | 10 min | 21°C | 0/30 |
| November | Too cold | 4.8 h | 4.2 | 13 min | 21°C | 1/30 |
| December | Too cold | 3.4 h | 3.3 | 16 min | 18°C | 3/30 |
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 Santa Monica
Pier, boardwalk and wide sandy beach. The Pacific is cool all year. The south coast is sunny and pleasant, but May to June often brings morning fog (June Gloom). Summer is dry and warm, and winter can bring rain.
In Santa Monica afternoon highs average from 16°C in March to 23°C in August. The wettest month is February (about 7 rainy days out of 30) and the driest is October (0). Midday UV peaks at 7.9 in July.
More about California · California in August · Best places in August
Questions about Santa Monica
When is the best time to visit Santa Monica for vitamin D?
The best months for vitamin D in Santa Monica are August, September, when a full dose takes about 7 minutes at midday.
What is the weather like in Santa Monica?
Afternoon highs average from 16°C in March to 23°C in August. The wettest month is February, with about 7 rainy days out of 30.
Which months should I avoid in Santa Monica?
For a beach stay, avoid the months when it is too cool from October to July.