Sumatra Weather in August

Average temperatures, rainfall, sunshine and the best places to visit in Sumatra, Indonesia in August.

Planning a journey to Sumatra, Indonesia this August and curious over the weather conditions to await? Your essential details are found on this page, answering your query:

What to Expect in Sumatra in August

Sumatra, Indonesia is a region in Indonesia. August in Sumatra generally has temperatures that range from warm to very warm, with precipitation levels ranging from moderate to heavy.

Temperatures

The average highest temperatures fluctuate between warm in Tuk Tuk at 27°C (81°F) to very warm in Jambi at 33°C (91°F). Nighttime temperatures generally drop to 24°C (75°F) in Jambi and 19°C (66°F) in Tuk Tuk. These night and day temperatures are average and some days may be even warmer. So be prepared and dress for the heat.

To learn more about the conditions in specific areas of Sumatra, Indonesia, check out the map below.

Precipitation

In August, precipitation varies across different areas. From moderate rainfall in Kalianda with an average of 72 mm (2.8 in) to heavy rainfall in Matur with 359 mm (14 in).

Average sunshine

Sunshine is moderately available across various locations. In Medan, you can expect around 145 hours of sunlight in August, which gives a pleasant combination of sun and shade. For those who want maximum sunshine, our weather planner can point you toward the sunniest places on Earth.

Explore Sumatra by month

Best Places to Visit in Sumatra in August

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Sumatra.

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Sumatra

What is the weather like in August for some of the most popular destinations in Sumatra, Indonesia?

Temperature range in Sumatra (August)

Precipitation variation in Sumatra (August)

Medan

In August Medan generally has very high temperatures with maximum daytime temperatures around 33°C (91°F), minimum nighttime temperatures around 23°C (73°F) and heavy monthly rainfall. So on average the conditions are poor that month.

July
August
September
Max temperature
33°C (91°F)
33°C (91°F)
32°C (90°F)
Min temperature
23°C (73°F)
23°C (73°F)
23°C (73°F)
Monthly sun hours
155 hours
145 hours
122 hours
Monthly rainfall
206 mm (8.1 in)
241 mm (9.5 in)
341 mm (13 in)
Monthly rainy days
9 days
13 days
15 days
Weather conditions

Pekanbaru

In August Pekanbaru generally has very high temperatures with maximum daytime temperatures around 33°C (91°F), minimum nighttime temperatures around 24°C (75°F) and heavy monthly rainfall. So on average the conditions are tolerable that month.

July
August
September
Max temperature
33°C (91°F)
33°C (91°F)
33°C (91°F)
Min temperature
24°C (75°F)
24°C (75°F)
24°C (75°F)
Monthly rainfall
134 mm (5.3 in)
170 mm (6.7 in)
213 mm (8.4 in)
Monthly rainy days
13 days
15 days
16 days
Weather conditions

Tanjungpandan

In August Tanjungpandan generally has very high temperatures with maximum daytime temperatures around 32°C (90°F), minimum nighttime temperatures around 25°C (77°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

July
August
September
Max temperature
31°C (88°F)
32°C (90°F)
32°C (90°F)
Min temperature
25°C (77°F)
25°C (77°F)
25°C (77°F)
Monthly rainfall
129 mm (5.1 in)
93 mm (3.7 in)
106 mm (4.2 in)
Monthly rainy days
11 days
10 days
10 days
Weather conditions

Bukittinggi

In August Bukittinggi generally has high temperatures with maximum daytime temperatures around 28°C (82°F), minimum nighttime temperatures around 19°C (66°F) and heavy monthly rainfall. So on average the conditions are poor that month.

July
August
September
Max temperature
28°C (82°F)
28°C (82°F)
28°C (82°F)
Min temperature
19°C (66°F)
19°C (66°F)
19°C (66°F)
Monthly rainfall
241 mm (9.5 in)
324 mm (13 in)
365 mm (14 in)
Monthly rainy days
14 days
16 days
18 days
Weather conditions

Matur

In August Matur generally has high temperatures with maximum daytime temperatures around 28°C (82°F), minimum nighttime temperatures around 20°C (68°F) and heavy monthly rainfall. So on average the conditions are poor that month.

July
August
September
Max temperature
29°C (84°F)
28°C (82°F)
28°C (82°F)
Min temperature
20°C (68°F)
20°C (68°F)
20°C (68°F)
Monthly rainfall
261 mm (10 in)
359 mm (14 in)
403 mm (16 in)
Monthly rainy days
14 days
16 days
18 days
Weather conditions

Is your destination not in the list? Have a look at all destinations in Sumatra, in Indonesia.

Popular cities in August

Day & night temperatures, rainfall and average weather in Sumatra in August.

City Weather Day temp Night temp Rainfall
Medan 33°C (91°F) 23°C (73°F) 241 mm (9.5 in)
Pekanbaru 33°C (91°F) 24°C (75°F) 170 mm (6.7 in)
Tanjungpandan 32°C (90°F) 25°C (77°F) 93 mm (3.7 in)
Bukittinggi 28°C (82°F) 19°C (66°F) 324 mm (13 in)
Matur 28°C (82°F) 20°C (68°F) 359 mm (14 in)
Dumai 33°C (91°F) 24°C (75°F) 200 mm (7.9 in)

Sumatra weather in August: frequently asked questions

What is the weather like in Sumatra, Indonesia in August?

August in Sumatra, Indonesia brings poor weather. In Medan, daytime temperatures are typically around 33°C (91°F) and nighttime lows hover near 23°C (73°F).

What is the average temperature in Sumatra, Indonesia in August?

Average temperatures in Sumatra, Indonesia during August range from a nighttime low near 23°C (73°F) to a daytime high around 33°C (91°F) in Medan.

Does Sumatra, Indonesia get a lot of rain in August?

Rainfall in Sumatra, Indonesia peaks during August. Medan averages roughly 241 mm (9.5 in), so frequent and sometimes heavy showers are the norm.

Is August a Good Time to Visit Sumatra, Indonesia?

In our opinion, August may not be the ideal time to visit Sumatra, Indonesia due to the typically poor weather in Medan.

Generally speaking, February provides unpleasant weather in Medan.

Interested in more climate information?

We have much more information about the climate in Sumatra.

Weather and climate has detailed information for every country in the world. Are you going to Indonesia? Get detailed historical weather averages for many cities in Indonesia.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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