Arugam Bay, Sri Lanka: vitamin D, best months and travel guide
World-class surf point, best from May to September. Best for: surfers.
The best months for vitamin D in Arugam Bay are January to April, when a full dose takes about 6 minutes at midday. Too hot from June to July and in September and rainy or stormy in May and in August and from October to December.
Arugam Bay month by month
| Month | Rating | Sun window | Peak UV | Full dose, age 30 | Afternoon high | Rainy days |
|---|---|---|---|---|---|---|
| January | Excellent | 7.0 h | 7.2 | 7 min | 29°C | 16/30 |
| February | Excellent | 8.2 h | 8.6 | 6 min | 30°C | 14/30 |
| March | Excellent | 8.4 h | 9.1 | 6 min | 31°C | 7/30 |
| April | Excellent | 8.4 h | 8.8 | 6 min | 32°C | 9/30 |
| May | Bad weather | 7.4 h | 7.8 | 7 min | 33°C | 18/30 |
| June | Too hot | 7.7 h | 7.6 | 7 min | 35°C | 11/30 |
| July | Too hot | 7.7 h | 8.1 | 7 min | 35°C | 20/30 |
| August | Bad weather | 7.6 h | 8.2 | 7 min | 33°C | 20/30 |
| September | Too hot | 7.5 h | 8.6 | 6 min | 35°C | 17/30 |
| October | Bad weather | 6.8 h | 7.4 | 7 min | 32°C | 29/30 |
| November | Bad weather | 6.6 h | 6.9 | 8 min | 29°C | 28/30 |
| December | Bad weather | 7.5 h | 7.4 | 7 min | 30°C | 22/30 |
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 Arugam Bay
World-class surf point, best from May to September. Two monsoons: the south and west coasts are best from December to March, and the east coast from May to September. The sea can be rough in the rainy months. Trains are scenic and slow.
In Arugam Bay afternoon highs average from 29°C in January to 35°C in July. The wettest month is October (about 29 rainy days out of 30) and the driest is March (7). Midday UV peaks at 9.1 in March, which is very strong, so protect your skin.
Southeast-coast beach town with several top surfing spots (Wikivoyage, CC BY-SA 4.0)
More about Sri Lanka · Sri Lanka in March · Best places in March
Questions about Arugam Bay
When is the best time to visit Arugam Bay for vitamin D?
The best months for vitamin D in Arugam Bay are January to April, when a full dose takes about 6 minutes at midday.
What is the weather like in Arugam Bay?
Afternoon highs average from 29°C in January to 35°C in July. The wettest month is October, with about 29 rainy days out of 30.
Which months should I avoid in Arugam Bay?
For a beach stay, avoid the months when it is too hot from June to July and in September and rainy or stormy in May and in August and from October to December.