Kupang Weather in September
With daytime temperatures of 33°C (91°F) and nighttime lows of 22°C (72°F), September in Kupang brings very high temperatures during the day. The perfect weather makes it an appealing time to visit.
Rainfall in Kupang in September
Historically, September sees about a single day of rain, with a monthly average of 11 mm (0.4 in). On the rare occasion it does rain, the shower can be quite heavy given the low total spread across a single day.
Temperature in Kupang in September
September is a perfect month in Kupang, with 33°C (91°F) during the day and 22°C (72°F) at night. Mornings and evenings are often more comfortable than the peak afternoon hours. At 22°C (72°F) overnight, nights are warm enough to sit outside comfortably in light clothing.
Sunshine in Kupang in September
Expect sunny days throughout the month, with an estimated 306 hours of sunshine. This makes it a pleasant time to visit Kupang.
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.If you prefer dry days with pleasant temperatures, June, July and August typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit East Timor, check out our Kupang's climate page.
Kupang Temperature in September
Min Temperature
22°C (72°F)
Max Temperature
33°C (91°F)
Water Temperature
27°C (81°F)
Chance of Rain
4%
Precipitation
11 mm (0.4 in)
Rainy days
a single day
Humidity
64%
Sunshine
306 hours
Percentage Sunshine
Daily Historical Temperatures
45-year average (1976-2025)
Based on our historical records, temperatures in Kupang 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
45-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 Kupang in September
Browse day-by-day weather records for Kupang spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Kupang historical weather extremes in September
Based on 23 years of weather observations (2002-2025), these are the most extreme conditions recorded in Kupang.
- On September 15, 2024, temperatures climbed to 37°C (99°F), marking the warmest September day on record.
- Kupang experienced its chilliest September day on September 23, 2003, reaching only 22°C (72°F).
- Kupang registered its coldest September night on September 1, 2012, with temperatures dropping to 16°C (61°F).
Best Places in East Timor in September
Find out more about the weather in East Timor and which places have the best travel conditions in this month. See all of East Timor in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Kupang in September
Warm but pleasant conditions in Kupang 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. Dry conditions mean you won't need to worry about rain protection. Expect water temperatures of around 27°C (81°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Kupang 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 East Timor, check out our Kupang's climate page.
Temperature Rainfall Sunshine Humidity Water Temp
See the full Kupang climate overview or explore weather in East Timor.
