Jakarta, Indonesia: vitamin D, best months and travel guide
Huge, busy capital, mostly a transit stop. Best for: business travellers.
The best months for vitamin D in Jakarta are July to October, when a full dose takes about 7 minutes at midday. Rainy or stormy from November to June.
Jakarta month by month
| Month | Rating | Sun window | Peak UV | Full dose, age 30 | Afternoon high | Rainy days |
|---|---|---|---|---|---|---|
| January | Bad weather | 7.5 h | 8.0 | 7 min | 31°C | 24/30 |
| February | Bad weather | 8.2 h | 9.0 | 6 min | 30°C | 27/30 |
| March | Bad weather | 7.7 h | 8.6 | 6 min | 31°C | 29/30 |
| April | Bad weather | 8.1 h | 8.2 | 7 min | 31°C | 28/30 |
| May | Bad weather | 7.6 h | 7.6 | 7 min | 32°C | 24/30 |
| June | Bad weather | 7.6 h | 7.3 | 7 min | 31°C | 19/30 |
| July | Excellent | 7.7 h | 7.5 | 7 min | 31°C | 10/30 |
| August | Excellent | 8.2 h | 8.2 | 7 min | 32°C | 7/30 |
| September | Excellent | 8.3 h | 8.9 | 6 min | 32°C | 16/30 |
| October | Excellent | 8.6 h | 9.1 | 6 min | 32°C | 15/30 |
| November | Bad weather | 7.9 h | 8.1 | 7 min | 32°C | 27/30 |
| December | Bad weather | 6.8 h | 7.7 | 7 min | 30°C | 29/30 |
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 Jakarta
Huge, busy capital, mostly a transit stop. 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 Jakarta afternoon highs average from 30°C in December to 32°C in October. The wettest month is March (about 29 rainy days out of 30) and the driest is August (7). Midday UV peaks at 9.1 in October, which is very strong, so protect your skin.
The perennially congested capital which is also the largest city in the country (Wikivoyage, CC BY-SA 4.0)
More about Indonesia · Indonesia in August · Best places in August
Questions about Jakarta
When is the best time to visit Jakarta for vitamin D?
The best months for vitamin D in Jakarta are July to October, when a full dose takes about 7 minutes at midday.
What is the weather like in Jakarta?
Afternoon highs average from 30°C in December to 32°C in October. The wettest month is March, with about 29 rainy days out of 30.
Which months should I avoid in Jakarta?
For a beach stay, avoid the months when it is rainy or stormy from November to June.