Pekanbaru Weather in September
September in Pekanbaru brings very high temperatures around 33°C (91°F) during the day, dropping to 24°C (75°F) at night, and as part of the rainy season, heavy rainfall is common.
Rainfall in Pekanbaru in September
Pekanbaru is in the rainy season in September, with rain on around 16 days and an average of 213 mm (8.4 in). The rainy season here brings regular, substantial showers. It's worth being prepared for rain on most days you're out.
Temperature in Pekanbaru in September
If you're visiting Pekanbaru in September, expect highs of 33°C (91°F) and overnight lows around 24°C (75°F). If you're spending a lot of time outdoors, it helps to plan around the warmer part of the day. With lows around 24°C (75°F), the nights are warm enough that a sheet is usually all you need for bedding.For more travel ideas, our weather planner can help you explore destinations around the world.
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 Pekanbaru's climate page.
Pekanbaru Temperature in September
Min Temperature
24°C (75°F)
Max Temperature
33°C (91°F)
Chance of Rain
54%
Precipitation
213 mm (8.4 in)
Rainy days
16 days
Daily Historical Temperatures
47-year average (1976-2025)
Based on our historical records, temperatures in Pekanbaru typically stay consistent throughout September, with daily highs averaging around 33°C (91°F). Nights are warm, with lows around 23°C (73°F).
Average temperatures in September
Daily Historical Precipitation
47-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 Pekanbaru in September
Browse day-by-day weather records for Pekanbaru spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Pekanbaru historical weather extremes in September
Based on 20 years of weather observations (2005-2025), these are the most extreme conditions recorded in Pekanbaru.
- Pekanbaru recorded its highest September temperature of 38°C (100°F) on September 8, 2014.
- On September 28, 2005, Pekanbaru saw its coldest September day with temperatures maxing out at 26°C (79°F).
- Nighttime temperatures dropped to 20°C (68°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 Pekanbaru in September
Warm but pleasant conditions in Pekanbaru 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. It's going to pour! Pack a good poncho and prepare for very wet conditions.What To Do in Pekanbaru 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 Pekanbaru's climate page.
See the full Pekanbaru climate overview or explore weather in Indonesia.
