Bali Weather Month by Month
Updated: 3 days ago
Bali has two seasons and no winter: a dry season from April to October and a wet season from November to March. The temperature barely changes, with daytime highs of 29 to 31 C all year, so the month you choose is really a choice about rain. January is the wettest, August the driest. This guide breaks the Bali year down month by month.
The heat barely moves; the rain is what changes
Two seasons, no winter: dry April to October, wet November to March.
Daytime highs stay 29 to 31 C all year; nights 22 to 24 C.
January is the wettest month, around 328 mm across 20 rainy days.
August is the driest, around 53 mm across one rainy day, with 10 hours of sun.
The sea stays warm, 26 to 29 C, and UV is extreme (9 to 11) most of the year.
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TABLE OF CONTENTS
Why 'Tropical' Is a Useless Weather Forecast
Ask what Bali's weather is like and you will be told hot and tropical, which tells you nothing you can pack or plan around. The heat barely moves: every month peaks at 29 to 31 C by day and drops to 22 to 24 C at night, with high to very high humidity throughout. What actually decides your trip is rain, and that swings hard, from about 328 mm in January to 53 mm in August. Plan around the rain, not the temperature.
Read more: how the rainy season changes a Bali trip
Bali Weather Month by Month
Here is the long-term monthly average for Denpasar in south Bali, the clearest single view of the year, from weather2travel. Day high and night low are in Celsius; rain is the monthly total in millimetres with the typical number of rainy days.
Month | Day high °C | Rain (mm) | Rainy days |
January | 30 | 328 | 20 |
February | 30 | 261 | 18 |
March | 31 | 225 | 17 |
April | 31 | 117 | 11 |
May | 30 | 107 | 7 |
June | 30 | 90 | 5 |
July | 29 | 119 | 3 |
August | 29 | 53 | 1 |
September | 30 | 116 | 1 |
October | 31 | 173 | 3 |
November | 31 | 187 | 8 |
December | 31 | 258 | 16 |
The pattern is clear. The wet season peaks from December to March, 225 to 328 mm a month across 16 to 20 rainy days, eases through April and May, and bottoms out from June to September, when August sees barely any rain. October and November are the shoulder, when the wet season rebuilds. Temperature stays within a three-degree band all year, so the month you pick is really a choice about rain and crowds, not heat.
When Is the Rainy Season in Bali?
The wet season runs November to March and peaks December to February. Rain usually falls as short, heavy afternoon or evening downpours rather than all-day drizzle, so even January, which averages 20 wet days, still has dry spells. Mornings often stay clear in the wettest months, which is why an early start matters most in the wet season. The sea is also roughest and least clear then, which affects snorkelling and the fast-boat crossings to Nusa Penida and the Gili Islands.
How Hot Is Bali, and How Strong Is the Sun?
Bali is warm and humid every month, with daytime highs of 29 to 31 C and humidity rated high to very high all year. The stronger signal is the sun: the UV index sits at 9 to 11, the extreme band, in most months, and the island gets 8 to 10 hours of sunshine a day, more in the dry season. Sea temperatures stay between 26 C in the dry season and 29 C in the wet, so the water is swimmable in every month. The one place the figures shift is altitude: the highlands around Kintamani and Munduk run several degrees cooler, especially at night.
See also: when to visit Bali and when to avoid it
What the Weather Means for Your Trip
Pack light, breathable clothes for 29 to 31 C and high humidity every month.
Bring strong sun protection: UV is in the extreme band, 9 to 11, most of the year.
In the wet season, do outdoor sights in the morning and keep a rain layer handy.
For the most reliable sun and the fewest rainy days, travel June to September.
The sea is warm year round, 26 to 29 C, so swimming is comfortable in any month.
Frequently Asked Questions
Does it rain all day in Bali in the wet season?
No. Even in the wettest months the rain usually comes as short, heavy afternoon or evening downpours, and mornings often stay clear. January, the wettest month, averages about 20 rainy days out of 31, not constant rain.
What is the hottest month in Bali?
There is no real hot or cold season. Daytime highs sit at 30 to 31 C from October to April and dip only to 29 C in July and August. Nights stay at 22 to 24 C year round, so the heat barely changes.
What are the wettest and driest months in Bali?
January is the wettest, averaging around 328 mm across 20 rainy days. August is the driest, around 53 mm across a single rainy day, with about 10 hours of sun. These are long-term Denpasar averages.
Is the sea warm enough to swim in Bali?
Yes, year round. Sea temperatures stay between 26 C in the dry season and 29 C in the wet, so the water is comfortable to swim in every month. Visibility for snorkelling is better in the drier months.
Do I need sun protection in Bali?
Yes, strongly. The UV index sits in the extreme band, 9 to 11, for most of the year, even through cloud, so high-factor sunscreen matters whatever the month you visit.
Book Around the Weather You Will Get
Once you know what the sky is doing each month, the rest of the trip falls into place: a dry-season visit for reliable sun and clear seas, or a wet-season trip for lower prices and smaller crowds with mornings planned around the rain. Sort your stay, your activities and your transport to match the month you choose.
Where To Stay?
Weather shifts what a stay is worth, wet or dry. Compare hotels and villas across Bali and lock your first night before the season sets a price.
Things To Do
Rain reshuffles a day fast. Browse tours, temple visits and day trips across Bali so a wet afternoon has a dry backup already lined up for you.
Rent A Car
Wet roads slow every drive down. Compare car hire across Bali, check what your licence needs, and sort transport before the afternoon rain hits.
Last verified: 22 October 2026
