Balikpapan Weather in September
With daytime temperatures of 30°C (86°F) and nighttime lows of 26°C (79°F), September in Balikpapan brings very high temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 134 mm (5.3 in) falls on average.
Rainfall in Balikpapan in September
Looking at the last 30 years, the data shows about 9 days with rain, averaging 134 mm (5.3 in) for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in Balikpapan in September
Expect highs of 30°C (86°F) in Balikpapan in September, with nights dropping to around 26°C (79°F). Mornings and evenings are often more comfortable than the peak afternoon hours. At 26°C (79°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference.
Average water temperature in September
The water temperature is 28°C (82°F), which most people find very comfortable. A good month for swimming and water sports.If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Balikpapan.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Indonesia, check out our Balikpapan's climate page.
Balikpapan Temperature in September
Min Temperature
26°C (79°F)
Max Temperature
30°C (86°F)
Water Temperature
28°C (82°F)
Chance of Rain
30%
Precipitation
134 mm (5.3 in)
Rainy days
9 days
Humidity
70%
Daily Historical Temperatures
46-year average (1976-2025)
Based on our historical records, temperatures in Balikpapan typically stay consistent throughout September, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 25°C (77°F).
Average temperatures in September
Daily Historical Precipitation
46-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Balikpapan in September
Browse day-by-day weather records for Balikpapan spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Balikpapan historical weather extremes in September
Based on 23 years of weather observations (2002-2025), these are the most extreme conditions recorded in Balikpapan.
- Balikpapan recorded its highest September temperature of 38°C (100°F) on September 8, 2011.
- The lowest daytime temperature in September was 27°C (81°F), recorded on September 17, 2013.
- Nighttime temperatures dropped to 23°C (73°F) on September 6, 2025, marking the coldest September night on record.
Best Places in Indonesia in September
Find out more about the weather in Indonesia and which places have the best travel conditions in this month. See all of Indonesia in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Balikpapan in September
Warm but pleasant conditions in Balikpapan in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. The water temperature sits at about 28°C (82°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear.What To Do in Balikpapan in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Indonesia, check out our Balikpapan's climate page.
Temperature Rainfall Humidity Water Temp
See the full Balikpapan climate overview or explore weather in Indonesia.
