Weather in Bali in August

How August compares

August is the 12th warmest month of the year in Bali and ranks 118th of 134 destinations we compare for August - see where else is hot in August. Against London's average high of 21.4°C in August, Bali is 4.8°C warmer by day and 9.7°C warmer at night.

Daytime and night-time in August

The typical August day in Bali peaks at 26.2°C, but that is an average: the warmest 10% of days reach 27.2°C or more. About 97% of days top 25°C. Nights average 23.2°C; one night in ten drops to 22.3°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest August day here reached 28.8°C (2020-08-10) and the coldest night 19.3°C (1994-08-31).

Rain in August

Wet (more than 8 rainy days): about 12 days with 1 mm or more, 31 mm in total. Year to year it varies a lot - the wettest August was 2020 with 73 mm, the driest 1994 with 11 mm. Humidity averages 81%.

Sea temperature in August

The sea averages 25.7°C - warm enough to swim (22°c+). Depending on the year it ranges from 25.0°C to 26.5°C. For the warmest sea here, come in February (28.9°C).

Sunshine and daylight

Around 5.8 hours of sunshine a day (estimated from cloud cover), 11.7 hours of daylight: the sun rises about 06:29 and sets about 18:19 local time in mid-August. Average cloud cover is 50%.

Is August a good time to visit Bali?

It is a reasonable choice: hot days but expect showers. The best months for Bali on our scoring are August, September, July; months averaging 25°C or more: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec.

Warm rather than fiercely hot, but still humid

August is Bali's coolest month by average daytime temperature, though that is relative: 96% of days reach 25°C. It suits travellers who want warmth without chasing the highest temperatures, but humidity of 81% means the air can still feel heavy. Choose loose, breathable clothes and keep anything strenuous flexible around how comfortable you feel at midday. Evenings offer only a modest drop in temperature, so do not expect a crisp, cool end to the day. Light clothing should remain useful after dark, and accommodation where you can cool down is a sensible priority if humid nights tend to disturb your sleep.

Make room for rain and cloud

Rain is part of the August picture, with about 12 rainy days and 31 mm across the month. That is a modest total spread across enough days that a completely rain-free stay is not something to count on. The figures do not tell you when rain will fall or how long it will last, so avoid building your plans around a guaranteed dry morning or afternoon. Sunshine averages about 5.8 hours within 11.7 hours of daylight: expect time without bright sunshine as well as sunny spells. Pack a light waterproof and keep outdoor plans flexible rather than treating every wet forecast as a lost day.