Gili Trawangan, Indonesia: vitamin D, best months and travel guide
Car-free island with turtles and a party reputation. Best for: backpackers, divers, couples.
The best months for vitamin D in Gili Trawangan are May to October, when a full dose takes about 7 minutes at midday. Rainy or stormy from November to April.
Gili Trawangan month by month
| Month | Rating | Sun window | Peak UV | Full dose, age 30 | Afternoon high | Rainy days |
|---|---|---|---|---|---|---|
| January | Bad weather | 8.1 h | 8.7 | 6 min | 30°C | 25/30 |
| February | Bad weather | 7.8 h | 8.7 | 6 min | 29°C | 27/30 |
| March | Bad weather | 7.8 h | 8.7 | 6 min | 30°C | 26/30 |
| April | Bad weather | 7.4 h | 7.9 | 7 min | 30°C | 27/30 |
| May | Excellent | 7.6 h | 7.5 | 7 min | 31°C | 16/30 |
| June | Excellent | 7.4 h | 7.1 | 8 min | 31°C | 10/30 |
| July | Excellent | 7.4 h | 7.3 | 7 min | 31°C | 8/30 |
| August | Excellent | 7.8 h | 8.1 | 7 min | 31°C | 9/30 |
| September | Excellent | 8.2 h | 8.9 | 6 min | 32°C | 16/30 |
| October | Excellent | 8.4 h | 9.3 | 6 min | 32°C | 17/30 |
| November | Bad weather | 8.3 h | 8.9 | 6 min | 32°C | 26/30 |
| December | Bad weather | 7.3 h | 8.1 | 7 min | 31°C | 25/30 |
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 Gili Trawangan
Car-free island with turtles and a party reputation. A dry season from April to October in Bali and Lombok, and a wet season of heavy showers from November to March. Roads are busy, and boat crossings can be rough in the rainy months.
In Gili Trawangan afternoon highs average from 29°C in February to 32°C in October. The wettest month is February (about 27 rainy days out of 30) and the driest is July (8). Midday UV peaks at 9.3 in October, which is very strong, so protect your skin.
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Questions about Gili Trawangan
When is the best time to visit Gili Trawangan for vitamin D?
The best months for vitamin D in Gili Trawangan are May to October, when a full dose takes about 7 minutes at midday.
What is the weather like in Gili Trawangan?
Afternoon highs average from 29°C in February to 32°C in October. The wettest month is February, with about 27 rainy days out of 30.
Which months should I avoid in Gili Trawangan?
For a beach stay, avoid the months when it is rainy or stormy from November to April.