VitaminDholidays

Vitamin D in Indonesia: best months for sun and a travel guide

The best months for vitamin D in Indonesia are June to August, October. In October, a full dose of about 1,000 IU takes around 6 minutes at midday for skin type III at age 30, with 8.7 usable sun hours a day. For a beach stay it is rainy or stormy in September and from November to May.

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Indonesia month by month

Indonesia is rated at its median coastal place, for skin type III at age 30. Click a month for the details.

MonthRatingSun windowPeak UVFull dose, age 30Full dose, age 65Afternoon highRainy days
JanuaryBad weather7.9 h8.46 min12 min30°C24/30
FebruaryBad weather8.2 h9.06 min11 min30°C27/30
MarchBad weather7.9 h8.76 min11 min30°C26/30
AprilBad weather7.7 h8.36 min12 min29°C28/30
MayBad weather7.5 h7.47 min14 min29°C20/30
JuneExcellent7.2 h6.88 min15 min28°C17/30
JulyExcellent6.8 h7.27 min14 min29°C15/30
AugustExcellent8.0 h8.17 min12 min28°C15/30
SeptemberBad weather8.3 h8.86 min11 min29°C18/30
OctoberExcellent8.7 h9.26 min11 min32°C16/30
NovemberBad weather8.7 h8.96 min11 min32°C23/30
DecemberBad weather6.2 h7.47 min14 min29°C29/30

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.

Travel guide: why go to Indonesia

Why go

Indonesia is a vast island nation with Bali's temples and surf, Komodo dragons, world-class diving and volcanoes.

Best for

Couples, surfers, divers, yoga travellers and adventurers.

What to expect

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.

Compare stays in Indonesia

Places in Indonesia

Each place has its own climate, so its best months can differ from the country as a whole.

Seminyak best: Excellent

Stylish Bali beach area with beach clubs and boutique shops.

Best for couples, groups, shoppers

Best months June, August, October · Avoid rainy or stormy in July and in September and from November to May

Kuta (Bali) best: Excellent

Busy surf beach with bars and budget stays.

Best for young travellers, beginner surfers

Best months June, August, October · Avoid rainy or stormy in July and in September and from November to May

Ubud best: Excellent

Cultural heart of Bali with rice terraces and temples.

Best for couples, yogis, culture travellers

Best months August · Avoid too hot from February to March and in November; rainy or stormy from April to July and from September to October and from December to January

Uluwatu best: Excellent

Clifftop temples and world-class surf breaks.

Best for surfers, couples

Best months June to August · Avoid rainy or stormy from September to May

Canggu best: Excellent

Surf, cafés and a remote-worker crowd.

Best for surfers, digital nomads, young travellers

Best months August · Avoid rainy or stormy from September to July

Sanur best: Excellent

Calm reef-protected beach with a quiet pace.

Best for families, retirees

Best months August, October · Avoid rainy or stormy in September and from November to July

Nusa Penida best: Excellent

Dramatic cliffs and manta ray snorkelling, off Bali.

Best for day-trippers, photographers

Best months June to August, October · Avoid too hot in November; rainy or stormy in September and from December to May

Nusa Lembongan best: Excellent

Small island of seaweed farms and snorkelling.

Best for families, divers, couples

Best months June to August, October · Avoid rainy or stormy in September and from November to May

Gili Trawangan best: Excellent

Car-free island with turtles and a party reputation.

Best for backpackers, divers, couples

Best months May to October · Avoid rainy or stormy from November to April

Kuta (Lombok) best: Excellent

Quieter southern surf and beach coast of Lombok.

Best for surfers, couples

Best months May to October · Avoid rainy or stormy from November to April

Labuan Bajo best: Excellent

Gateway for Komodo boat trips on Flores.

Best for adventurers, divers

Best months May to October · Avoid rainy or stormy from November to April

Raja Ampat Islands

The world's richest coral reefs in remote Papua.

Best for experienced divers, nature lovers

Best months none · Avoid rainy or stormy all year

Yogyakarta best: Excellent (inland)

Cultural city of royal palaces and the base for Borobudur.

Best for culture travellers

Best months May to September · Avoid rainy or stormy from October to April

Central Java's cultural hub and the access point to the mighty temples of Prambanan and Borobudur

Borobudur best: Excellent (inland)

Giant ninth-century Buddhist temple at sunrise.

Best for culture travellers, photographers

Best months May to September · Avoid rainy or stormy from October to April

One of the largest Buddhist temples in the world located in Central Java province; often combined with a visit to the equally…

Jakarta best: Excellent

Huge, busy capital, mostly a transit stop.

Best for business travellers

Best months July to October · Avoid rainy or stormy from November to June

The perennially congested capital which is also the largest city in the country

Bunaken best: Excellent

Marine park off North Sulawesi with sheer coral walls.

Best for divers, snorkellers

Best months May, July, September, October · Avoid rainy or stormy in June and in August and from November to April

One of the best scuba diving destinations in Indonesia, if not the world

Belitung best: Excellent

Granite boulder beaches and calm clear water.

Best for couples, families

Best months July to September · Avoid rainy or stormy from October to June

Wakatobi best: Excellent

Remote marine park with rich reefs.

Best for divers, nature lovers

Best months August, October · Avoid rainy or stormy in September and from November to July

Mount Bromo (inland)

Active volcano visited for sunrise in East Java.

Best for hikers, photographers

Best months none · Avoid too cool all year

Komodo National Park best: Excellent

Home of Komodo dragons and pink-sand beaches.

Best for adventurers, snorkellers

Best months May to November · Avoid rainy or stormy from December to April

Home of the Komodo dragon and a hugely important marine ecosystem

Some short descriptions come from Wikivoyage (CC BY-SA 4.0).

Questions about vitamin D in Indonesia

When is the best time to visit Indonesia for vitamin D?

The best months for vitamin D in Indonesia are June to August, October. In October, a full dose of about 1,000 IU takes around 6 minutes at midday for skin type III at age 30, with 8.7 usable sun hours a day.

Can you get vitamin D from the sun in Indonesia in December?

Yes, but slowly. In December a full dose takes about 7 minutes at midday for skin type III at age 30, with 6.2 usable hours a day.

How long do I need in the sun in Indonesia?

In October, the best month, about 6 minutes at midday with a quarter of the body bare, for skin type III at age 30; about 11 minutes at age 65. Darker skin needs longer and fair skin burns sooner, so keep sessions short. This is an estimate for planning, not medical advice.

Which months should I avoid in Indonesia?

For a beach stay, avoid the months when it is rainy or stormy in September and from November to May.

What is the best place in Indonesia for vitamin D?

In October the strongest sun of the places we rate is around Kuta (Lombok). Each place has its own rating, so open the place list to compare them.

Plan by month

Similar destinations

Best places for vitamin D in October · Vitamin D explained