Seminyak Weather in September
September in Seminyak averages 27°C (81°F) during the day and 24°C (75°F) at night. The perfect conditions and moderate rainfall make it a solid month to visit.
Rainfall in Seminyak in September
Typically, you can expect about a single day of rain this month, with 57 mm (2.2 in) on average. Any rain that does arrive tends to come in a single sharp spell rather than prolonged drizzle.
Temperature in Seminyak in September
September tends to be one of the perfect months in Seminyak, with 27°C (81°F) in the afternoon and 24°C (75°F) overnight. Conditions stay fairly consistent through the month, making it easier to plan what to wear. With overnight lows of 24°C (75°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably.
Sunshine in Seminyak in September
The month enjoys around 251 hours of sunshine, creating mostly sunny days with good weather conditions.
Average water temperature in September
The water temperature is 27°C (81°F), which most people find very comfortable. A good month for swimming and water sports.Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, June, July, August, September and October typically offer the best weather for Seminyak.
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 Seminyak's climate page.
Seminyak Temperature in September
Min Temperature
24°C (75°F)
Max Temperature
27°C (81°F)
Water Temperature
27°C (81°F) *
Chance of Rain
2%
Precipitation
57 mm (2.2 in)
Rainy days
a single day
Humidity
80% *
Sunshine
251 hours *
Percentage Sunshine
56% *
Daily Historical Temperatures
48-year average (1976-2025)
Based on our historical records, temperatures in Seminyak typically stay consistent throughout September, with daily highs averaging around 27°C (81°F). Nights are warm, with lows around 24°C (75°F).
Average temperatures in September
Daily Historical Precipitation
48-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 Seminyak in September
Browse day-by-day weather records for Seminyak spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Seminyak historical weather extremes in September
The extremes listed below come from historical weather data collected in Seminyak from 1991 through 2025.
- On September 26, 2008, temperatures climbed to 33°C (91°F), marking the warmest September day on record.
- On September 15, 1991, Seminyak saw its coldest September day with temperatures maxing out at 24°C (75°F).
- Nighttime temperatures dropped to 18°C (64°F) on September 4, 2006, 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 Seminyak in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Rain gear is recommended, you can expect wet weather on multiple days. With water temperatures around 27°C (81°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Seminyak 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 Seminyak's climate page.
Temperature Rainfall Sunshine Humidity Water Temp
See the full Seminyak climate overview or explore weather in Indonesia.
