Climate in Bali (Indonesia)

Bali has a tropical climate, hot all year round, with a rainy season from November to March, due to the northwest monsoon, and a relatively dry season from April to October, when, however, some showers can still occur. In the rainy season, it usually rains a couple of hours in the morning and a couple of hours in the afternoon, while in the rest of the day the sun shines for a few hours.
Bali is an island of Indonesia, belonging to the "Lesser Sunda Islands" and located east of Java, almost 9 degrees south of the equator.

Temperatures are high and uniform throughout the year. They are slightly higher from October to April, when the daily average is around 28 °C (82 °F), and a bit lower from June to September, when the southeast monsoon blows, which brings a bit of cooler air, and the average drops to about 26.5/27 °C (79.5/80.5 °F). In the rainy season, there's muggy heat due to high humidity.

Throughout the year, 1,700 millimeters (67 inches) of rain fall, with a maximum from December to February, when the rainfall ranges from 280 to 350 mm (11 to 13.5 in) per month. In the dry period, from April to October, the rainfall is below 100 mm (4 in) per month, with a minimum in August of just 15 mm (0.6 in).
The rainfall amount, however, can change from one year to another, so if we analyze the rainfall records, we can see that sometimes the rainy season can last until April, or begin as early as in October.

In the interior of the island, occupied by hills and mountains, the weather is more likely to be cloudy and rainy. The highest peak is Agung volcano, 3,000 meters (9,800 feet) high. Being closer to the inland elevations, the northern coast is rainier than the southern one. The southern part of the island, where Denpasar is located, in addition to cities such as Ubud, Kuta, Seminyak and Pecatu, is therefore the least rainy. If you are planning some hiking at high altitudes, keep in mind that above 1,000 meters (3,300 feet), in towns such as Bedugul and Kintamani, it's cool in the evening and at night, especially in the dry season, while above 2,000 meters (6,500 feet) it can get quite cold. In addition, at noon and in the afternoon the chance of thunderstorms in the highlands is higher than on the southern side, where the majority of the resorts are found.

In Bali, there's plenty of sunshine in the dry season, while in the rainy season the sun shines for a few hours a day, between one rain shower and another. In the interior of the island, a blanket of clouds often lies over the mountain peaks.

From November to mid-May, but more often from January to mid-April, Bali can be brushed by tropical cyclones, which usually do not hit it directly, but pass over the ocean not far to the south, bringing an increase in wind and rainfall.



The sea in Bali is warm enough to swim in throughout the year: the water temperature ranges from 27 °C (81 °F) between July and September, to 29 °C (84 °F) between November and May. The western part of the Bukit peninsula, where waves are higher, is preferable for surfing.

Best Time

The best time to travel to Bali and enjoy its beaches is from June to September, the weather is usually sunny, the heat is not too intense, and in any case, it's tempered by the breeze. There are just some brief downpours or thunderstorms every now and then, which, however, are more likely at night and in the early morning. August is the best month, since it is the driest. May and October, too, are months you may want to consider, in fact they are the best ones among those that do not fall in the high season: they are a bit more muggy and rainy, but they are still out of the actual rainy season. However, in inland and mountainous areas, thunderstorms are frequent.

What to pack

Being that Bali's climate is hot all year round, you can bring light clothes of natural fibers, a sun hat, a scarf for the breeze, and a light sweatshirt for the evening. From November to March, you can add a light raincoat or an umbrella.
When going to the reef, you can bring snorkeling equipment, including water shoes or rubber-soled shoes.
When going mountain climbing, bring hiking shoes, a sweatshirt or sweater, a jacket, and a raincoat.

The following weather data was recorded at the airport, which is located near the capital, Denpasar.

Bali - Climate data

In Bali, the average temperature of the coldest month (August) is of 26.4 °C (79.4 °F), that of the warmest month (November) is of 28.3 °C (83 °F). Here are the average temperatures.
Precipitation amounts to 1715 millimeters (67.5 inches) per year: it is therefore abundant. It ranges from 15 mm (0.6 in) in the driest month (August) to 350 mm (13.8 in) in the wettest one (January). Here is the average precipitation.
The sea temperature ranges from 27 °C (81 °F) in July, August, September to
There are on average around 2990 sunshine hours per year. Here are the average hours of sunshine per day.

Bali - Weather by month

Based on the period 1991-2020

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January is generally a very hot, muggy month. The average temperature is of 27.8 °C (82 °F), with a minimum of 24.8 °C (76.7 °F) and a maximum of 30.8 °C (87.4 °F).
On the coldest nights of the month, the temperature usually drops to around 22.5 °C (72 °F).
On the warmest days of the month, the temperature usually reaches around 33 °C (91.5 °F).
Precipitation amounts to 350 mm (13.8 in), distributed over 19 days.
The day lasts on average 12 hours and 35 minutes.
There are on average 6 hours of sunshine per day. So, the sun shines 48% of the time.
The average humidity is 82%. Hence, the air is normally humid.
The average wind speed is 13 kph (8 mph).
The average sea temperature is of 29 °C (84.5 °F). Therefore, the sea is pleasantly warm and allows long swims.

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February is generally a very hot, muggy month. The average temperature is of 27.9 °C (82 °F), with a minimum of 24.8 °C (76.7 °F) and a maximum of 31 °C (87.9 °F).
On the coldest nights of the month, the temperature usually drops to around 23 °C (73 °F).
On the warmest days of the month, the temperature usually reaches around 33 °C (91 °F).
Precipitation amounts to 280 mm (11 in), distributed over 18 days.
The day lasts on average 12 hours and 25 minutes.
There are on average 6 hours of sunshine per day. So, the sun shines 48% of the time.
The average humidity is 81%. Hence, the air is normally humid.
The average wind speed is 12 kph (7 mph).
The average sea temperature is of 29 °C (84 °F). Therefore, the sea is pleasantly warm and allows long swims.

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March is generally a very hot, muggy month. The average temperature is of 27.9 °C (82 °F), with a minimum of 24.8 °C (76.6 °F) and a maximum of 31.1 °C (88 °F).
On the coldest nights, the temperature usually drops to around 23 °C (73.5 °F).
On the warmest days, the temperature usually reaches around 32.5 °C (90.5 °F).
Precipitation amounts to 215 mm (8.5 in), distributed over 20 days.
The day lasts on average 12 hours and 5 minutes.
There are on average 7 hours of sunshine per day. So, the sun shines 58% of the time.
The average humidity is 81%. Hence, the air is normally humid.
The average wind speed is 9 kph (6 mph).
The average sea temperature is of 29.5 °C (84.5 °F). Therefore, the sea is pleasantly warm and allows long swims.

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April is generally a very hot, muggy month. The average temperature is of 28 °C (82 °F), with a minimum of 24.8 °C (76.7 °F) and a maximum of 31.2 °C (88.2 °F).
On the coldest nights, the temperature usually drops to around 23 °C (73.5 °F).
On the warmest days, the temperature usually reaches around 32.5 °C (90.5 °F).
Precipitation amounts to 90 mm (3.5 in), distributed over 12 days.
The day lasts on average 11 hours and 55 minutes.
There are on average 8 hours of sunshine per day. So, the sun shines 67% of the time.
The average humidity is 81%. Hence, the air is normally humid.
The average wind speed is 9 kph (6 mph).
The average sea temperature is of 29.5 °C (85 °F). Therefore, the sea is pleasantly warm and allows long swims.

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May is generally a very hot, muggy month. The average temperature is of 27.6 °C (82 °F), with a minimum of 24.5 °C (76 °F) and a maximum of 30.7 °C (87.2 °F).
On the coldest nights, the temperature usually drops to around 21.5 °C (71 °F).
On the warmest days, the temperature usually reaches around 32 °C (90 °F).
Precipitation amounts to 75 mm (3 in), distributed over 8 days.
The day lasts on average 11 hours and 40 minutes.
There are on average 9 hours of sunshine per day. So, the sun shines 77% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is 10 kph (7 mph).
The average sea temperature is of 29 °C (84 °F). Therefore, the sea is pleasantly warm and allows long swims.

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June is generally a warm to hot, muggy month. The average temperature is of 27 °C (81 °F), with a minimum of 24.1 °C (75.5 °F) and a maximum of 29.9 °C (85.9 °F).
On the coldest nights, the temperature usually drops to around 21.5 °C (70.5 °F).
On the warmest days, the temperature usually reaches around 31.5 °C (88.5 °F).
Precipitation amounts to 70 mm (2.8 in), distributed over 7 days.
The day lasts on average 11 hours and 35 minutes.
There are on average 10 hours of sunshine per day. So, the sun shines 86% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is 12 kph (8 mph).
The average sea temperature is of 28 °C (82.5 °F). Therefore, the sea is pleasantly warm and allows long swims.

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July is generally a warm to hot, muggy month. The average temperature is of 26.5 °C (80 °F), with a minimum of 23.8 °C (74.9 °F) and a maximum of 29.2 °C (84.6 °F).
On the coldest nights of the month, the temperature usually drops to around 20.5 °C (69 °F).
On the warmest days of the month, the temperature usually reaches around 30.5 °C (87 °F).
Precipitation amounts to 50 mm (2 in), distributed over 4 days.
The day lasts on average 11 hours and 40 minutes.
There are on average 10 hours of sunshine per day. So, the sun shines 86% of the time.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is 13 kph (8 mph).
The average sea temperature is of 27 °C (81 °F). Therefore, the sea is pleasantly warm and allows long swims.

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August, the least warm month of the year, is generally a warm to hot, muggy month. The average temperature is of 26.4 °C (79 °F), with a minimum of 23.5 °C (74.3 °F) and a maximum of 29.2 °C (84.6 °F).
On the coldest nights of the month, the temperature usually drops to around 19.5 °C (67.5 °F).
On the warmest days of the month, the temperature usually reaches around 30.5 °C (87 °F).
Precipitation amounts to 15 mm (0.6 in), distributed over 3 days.
The day lasts on average 11 hours and 50 minutes.
There are on average 10 hours of sunshine per day. So, the sun shines 85% of the time.
The average humidity is 77%. Hence, the air is normally humid.
The average wind speed is 13 kph (8 mph).
The average sea temperature is of 27 °C (80 °F). Therefore, the sea is pleasantly warm and allows long swims.

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September is generally a warm to hot, muggy month. The average temperature is of 26.8 °C (80 °F), with a minimum of 23.6 °C (74.4 °F) and a maximum of 30.1 °C (86.1 °F).
On the coldest nights, the temperature usually drops to around 20 °C (68.5 °F).
On the warmest days, the temperature usually reaches around 31.5 °C (88.5 °F).
Precipitation amounts to 40 mm (1.6 in), distributed over 3 days.
The day lasts on average 12 hours and 5 minutes.
There are on average 9 hours of sunshine per day. So, the sun shines 74% of the time.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is 11 kph (7 mph).
The average sea temperature is of 27 °C (81 °F). Therefore, the sea is pleasantly warm and allows long swims.

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October is generally a very hot, muggy month. The average temperature is of 27.7 °C (82 °F), with a minimum of 24.4 °C (75.9 °F) and a maximum of 31.1 °C (87.9 °F).
On the coldest nights, the temperature usually drops to around 22 °C (71.5 °F).
On the warmest days, the temperature usually reaches around 32.5 °C (90.5 °F).
Precipitation amounts to 90 mm (3.5 in), distributed over 6 days.
The day lasts on average 12 hours and 20 minutes.
There are on average 9 hours of sunshine per day. So, the sun shines 73% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is 9 kph (6 mph).
The average sea temperature is of 28 °C (83 °F). Therefore, the sea is pleasantly warm and allows long swims.

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November, the hottest month of the year, is generally a very hot, muggy month. The average temperature is of 28.3 °C (83 °F), with a minimum of 25 °C (77 °F) and a maximum of 31.7 °C (89 °F).
On the coldest nights, the temperature usually drops to around 23 °C (74 °F).
On the warmest days, the temperature usually reaches around 33.5 °C (92 °F).
Precipitation amounts to 150 mm (5.9 in), distributed over 10 days.
The day lasts on average 12 hours and 30 minutes.
There are on average 7 hours of sunshine per day. So, the sun shines 56% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is 8 kph (5 mph).
The average sea temperature is of 29.5 °C (84.5 °F). Therefore, the sea is pleasantly warm and allows long swims.

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December, the hottest month of the year, is generally a very hot, muggy month. The average temperature is of 28 °C (82 °F), with a minimum of 25.1 °C (77.1 °F) and a maximum of 31 °C (87.8 °F).
On the coldest nights of the month, the temperature usually drops to around 23 °C (73.5 °F).
On the warmest days of the month, the temperature usually reaches around 33 °C (91.5 °F).
Precipitation amounts to 290 mm (11.4 in), distributed over 16 days.
The day lasts on average 12 hours and 35 minutes.
There are on average 7 hours of sunshine per day. So, the sun shines 56% of the time.
The average humidity is 81%. Hence, the air is normally humid.
The average wind speed is 11 kph (7 mph).
The average sea temperature is of 29.5 °C (85 °F). Therefore, the sea is pleasantly warm and allows long swims.