Sumatra in august: average Weather, Temperature and Climate, Where to go?
Weather on the island of Sumatra in august 2025
Below, check out the weather forecast for the month of august for most popular cities in Sumatra. These datas are statistics for august from weather reports for many years. The percentage indicates the probability of having the weather indicated.
Average weather in august in Medan
tolerable weather UV index: 7
Weather at 6am
77°F
Moderate rain at times
37% of time
32%
26%
4%
Weather at 12pm
94°F
Clear/Sunny
35% of time
31%
29%
6%
Weather at 6pm
81°F
Moderate rain at times
40% of time
32%
18%
10%
Weather at 3am
76°F
43%
28%
23%
6%
Where to go on the island of Sumatra in august?
Where to go on the island of Sumatra in august: destination map
perfect weather
good
tolerable
bad
very bad
Where to go in each region in august?
| Bangka-Belitung Islands (Pulau Bangka, Pulau Belitung...) | 86°F to 88°F | 9 à 11 days | 85°F | good weather |
| Central of Sumatra (Padang City, Dumai, Bukittinggi...) | 85°F to 94°F | 10 à 19 days | 86°F | tolerable weather |
| North of Sumatra (Medan, Banda Aceh, Pematangsiantar...) | 79°F to 94°F | 6 à 23 days | 86°F | tolerable weather* |
| Riau Islands (Batam, Tanjungpinang...) | 88°F | 8 à 14 days | 85°F to 86°F | good weather* |
| South of Sumatra (Palembang, Bengkulu, Bandar Lampung...) | 88°F to 94°F | 7 à 14 days | 85°F | good weather* |
Where should you go on the island of Sumatra in august when it comes to the weather?
Remember:
The climate on the island of Sumatra in august ranges from good to tolerable depending on the region and city.
You are lucky: It is not perfect, however, the weather in Sumatra that month is, on average, pretty good in Banda Aceh and Sigli. I allows to appreciate sightseeing in these locations. And even why not take a little time to enjoy the weather for... just be relax!
If you do not go lazing in the sun, but, for example to discover the heritage, the cities of Langsa, Palembang, Lac Maninjau, Tanjungpinang, Gunung Leuser National Park, Bandar Lampung, Kisaran, Batam, Bukit Lawang, Metro, Jambi City, Bukittinggi, Payakumbuh, Sibolga, Padangsidempuan, Lhokseumawe, Pekanbaru, Medan, Bengkulu, Gunungsitoli (Pulau Nias), Takengon and Pariaman have a ok but correct weather for this kind of activity in august. Finally, avoid going to Tebingtinggi, Simpang, lake Toba, Berastagi, Dumai, Samosir, Pematangsiantar, Parapat and Padang City that month because the climate is bad.
Climate on the island of Sumatra in august
Climate in Medan in august
In the month of august, maximum temperature is 94°F and minimum temperature is 77°F (for an average temperature of 86°F). The climate is very warm around this city in august. With 8.8in over 17 days, you risk getting wet slightly during your trip. But this is reasonably and it will not be continuous.
With a correct weather, august is okay (but not good time) for traveling in that area.
| August | |||
| Average temperature | 86°F | ||
| Highest temperature | 94°F | ||
| Lowest temperature | 77°F | ||
| Rainfall | 8.8in | ||
| Number of days with rainfall | 17 day(s) (55%) | ||
| Humidity | 86% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 34% | ||
| Length of day | 12:14 | ||
| Our opinion at whereandwhen.net | tolerable |
Climate in Palembang in august
In august, maximum temperature is 94°F and minimum temperature is 77°F (for an average temperature of 85°F). The climate is burning in this location in the month of august. With 4.3in over 8 days, you risk getting wet slightly during your vacations. But this is rather moderate and you will not be too bothered by it.
With proper weather, the month of august is okay (but not the best time) for traveling in this locality.
| August | |||
| Average temperature | 85°F | ||
| Highest temperature | 94°F | ||
| Lowest temperature | 77°F | ||
| Rainfall | 4.3in | ||
| Number of days with rainfall | 8 day(s) (26%) | ||
| Humidity | 93% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 42% | ||
| Length of day | 12:01 | ||
| Our opinion at whereandwhen.net | good |
Climate in Banda Aceh in august
In the month of august, the mean temperature in Banda Aceh is 85°F (maximum temperature is 90°F and minimum temperature is 77°F). The climate is very hot in this location in the month of august. With 5in over 6 days, you risk getting wet slightly throughout your journey. But this is rather reasonably and you will not be too bothered by it.
With a good climate, the month of august is a recommended month to go in Banda Aceh.
| August | |||
| Average temperature | 85°F | ||
| Highest temperature | 90°F | ||
| Lowest temperature | 77°F | ||
| Sea temperature | 85°F | ||
| Rainfall | 5in | ||
| Number of days with rainfall | 6 day(s) (20%) | ||
| Humidity | 81% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 35% | ||
| Length of day | 12:18 | ||
| Our opinion at whereandwhen.net | good |
Climate in Bandar Lampung in august
In the month of august, the mean temperature in Bandar Lampung is 83°F (maximum temperature is 90°F and minimum temperature is 77°F). The climate is burning in this location in the month of august. With 4.5in over 9 days, you will experience some showers throughout your stay. But this is rather reasonably and it will not be continuous.
With a correct weather, the month of august is okay (but not the best time) for traveling in that area.
| August | |||
| Average temperature | 83°F | ||
| Highest temperature | 90°F | ||
| Lowest temperature | 77°F | ||
| Sea temperature | 84°F | ||
| Rainfall | 4.5in | ||
| Number of days with rainfall | 9 day(s) (28%) | ||
| Humidity | 89% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 39% | ||
| Length of day | 11:56 | ||
| Our opinion at whereandwhen.net | good |
Climate in Bengkulu in august
In the month of august, maximum temperature is 88°F and minimum temperature is 77°F (for an average temperature of 83°F). The climate is very warm here in this month. With 8.7in over 14 days, rain may occur during your trip. But this is rather moderate and it will not be continuous.
With a correct climate, the month of august is okay (but not good time) for traveling there.
| August | |||
| Average temperature | 83°F | ||
| Highest temperature | 88°F | ||
| Lowest temperature | 77°F | ||
| Sea temperature | 84°F | ||
| Rainfall | 8.7in | ||
| Number of days with rainfall | 14 day(s) (45%) | ||
| Humidity | 86% | ||
| Daily sunshine hours | 12 | ||
| Cloud cover | 34% | ||
| Length of day | 11:59 | ||
| Our opinion at whereandwhen.net | tolerable |
All cities on the island of Sumatra in august
| Medan in august | tolerable weather |
| Palembang in august | good weather |
| Banda Aceh in august | good weather |
| Bandar Lampung in august | good weather |
| Bengkulu in august | tolerable weather |
| Bukittinggi in august | tolerable weather |
| Dumai in august | tolerable weather |
| Gunungsitoli (Pulau Nias) in august | tolerable weather |
| Jambi City in august | good weather |
| Padang City in august | tolerable weather |
| Pematangsiantar in august | bad weather |
| Batam in august | tolerable weather |
| Berastagi in august | very bad weather |
| Way Kambas National Park in august | good weather |
| Bukit Lawang in august | tolerable weather |
| Bukit Tigapuluh National Park in august | tolerable weather |
| Calang in august | tolerable weather |
| Kerinci Seblat National Park in august | tolerable weather |
| Lac Maninjau in august | tolerable weather |
| Lake Toba (Danau Toba) in august | very bad weather |
| Parapat in august | bad weather |
| Gunung Leuser National Park in august | tolerable weather |
| Payakumbuh in august | tolerable weather |
| Pulau Bangka in august | good weather |
| Pulau Belitung in august | good weather |
| Pulau Rupat in august | tolerable weather |
| Pulau Siberut in august | tolerable weather |
Weather data for Sumatra in august:
Weather data for Sumatra in august is derived from an average of the weather forecast since 2009 on the island of Sumatra. There is a margin of error and these forecasts are to be considered as general information only. The weather on the island of Sumatra can vary slightly from year to year, but these predictions should limit surprises. So you can pack your bags and check when is the best time to go to Sumatra.