Nha Trang, Vietnam: vitamin D, best months and travel guide
Beach city with island boat trips and diving. Best for: families, divers, budget travellers.
The best months for vitamin D in Nha Trang are January to April, July, when a full dose takes about 6 minutes at midday. Too hot from May to June and in August and rainy or stormy from September to December.
Nha Trang month by month
| Month | Rating | Sun window | Peak UV | Full dose, age 30 | Afternoon high | Rainy days |
|---|---|---|---|---|---|---|
| January | Good | 6.6 h | 6.4 | 8 min | 26°C | 11/30 |
| February | Excellent | 7.7 h | 7.9 | 7 min | 28°C | 11/30 |
| March | Excellent | 8.4 h | 8.9 | 6 min | 29°C | 8/30 |
| April | Excellent | 8.7 h | 9.2 | 6 min | 32°C | 5/30 |
| May | Too hot | 8.5 h | 8.6 | 6 min | 33°C | 12/30 |
| June | Too hot | 8.0 h | 8.1 | 7 min | 33°C | 13/30 |
| July | Excellent | 7.9 h | 8.3 | 6 min | 32°C | 17/30 |
| August | Too hot | 8.0 h | 8.9 | 6 min | 33°C | 10/30 |
| September | Bad weather | 7.7 h | 8.4 | 6 min | 32°C | 18/30 |
| October | Bad weather | 7.4 h | 7.9 | 7 min | 30°C | 25/30 |
| November | Bad weather | 6.9 h | 7.0 | 8 min | 28°C | 22/30 |
| December | Bad weather | 5.0 h | 5.4 | 10 min | 27°C | 21/30 |
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 Nha Trang
Beach city with island boat trips and diving. Different climates in the north, centre and south. The central coast (Da Nang, Hoi An) is best from February to May; the south is dry from December to April; typhoons can hit the centre from September to November.
In Nha Trang afternoon highs average from 26°C in January to 33°C in June. The wettest month is October (about 25 rainy days out of 30) and the driest is April (5). Midday UV peaks at 9.2 in April, which is very strong, so protect your skin.
A burgeoning beach resort (Wikivoyage, CC BY-SA 4.0)
More about Vietnam · Vietnam in April · Best places in April
Questions about Nha Trang
When is the best time to visit Nha Trang for vitamin D?
The best months for vitamin D in Nha Trang are January to April, July, when a full dose takes about 6 minutes at midday.
What is the weather like in Nha Trang?
Afternoon highs average from 26°C in January to 33°C in June. The wettest month is October, with about 25 rainy days out of 30.
Which months should I avoid in Nha Trang?
For a beach stay, avoid the months when it is too hot from May to June and in August and rainy or stormy from September to December.