Climate averages 1991–2020
Kupang weather
in September.
A hot, very dry month: the 3rd warmest and the joint 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Kupang: daytime highs average 31.9°C and nights cool to about 23.0°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 4.2 mm of rain on fewer than one day, which makes September a very dry month (the joint 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 02 min on an average September day.
The nearest other city in this atlas is Atambua (184 km away). In September its highs average 31.0°C, 0.9°C cooler than Kupang, with 9.1 mm of rain.
Among the 200 cities listed in Indonesia, Kupang ranks joint 37th of 200 for the warmest September highs and 1st of 200 for the driest September (rainfall, lowest first). The mean September high of those 200 cities is 30.1°C; Kupang is 1.8°C warmer than that mean.
From September to October, average highs rise by 1.1°C to 33.0°C, and monthly rainfall rises from 4.2 mm to 18 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Kupang climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.3°C24.7°C | 24.7°C | 273 | 26.8 | 12.613 h |
| February | 29.0°C24.5°C | 24.5°C | 244 | 25.4 | 12.412 h |
| March | 29.6°C24.5°C | 24.5°C | 199 | 22.6 | 12.212 h |
| April | 30.2°C24.6°C | 24.6°C | 78 | 11.0 | 11.912 h |
| May | 30.1°C24.3°C | 24.3°C | 23 | 3.7 | 11.712 h |
| June | 29.6°C23.7°C | 23.7°C | 15 | 1.9 | 11.512 h |
| July | 29.5°C22.9°C | 22.9°C | 4.2 | 1.0 | 11.612 h |
| August | 30.3°C22.5°C | 22.5°C | 1.7 | 0.5 | 11.812 h |
| September, selected | 31.9°C23.0°C | 23.0°C | 4.2 | 0.8 | 12.012 h |
| October | 33.0°C24.3°C | 24.3°C | 18 | 3.5 | 12.312 h |
| November | 33.0°C25.4°C | 25.4°C | 73 | 10.5 | 12.613 h |
| December | 30.4°C25.1°C | 25.1°C | 236 | 24.4 | 12.713 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Atambua in SeptemberIndonesia · 184 kmHigh 31.0°C · Low 20.7°C · 9.1 mm rain
- Maumere in SeptemberIndonesia · 231 kmHigh 30.0°C · Low 24.7°C · 7.7 mm rain
- Ende in SeptemberIndonesia · 259 kmHigh 32.3°C · Low 24.2°C · 24 mm rain
- Dili in SeptemberTimor Leste · 281 kmHigh 32.0°C · Low 22.5°C · 20 mm rain
- Labuan Bajo in SeptemberIndonesia · 449 kmHigh 28.8°C · Low 24.0°C · 48 mm rain
- Baubau in SeptemberIndonesia · 535 kmHigh 30.2°C · Low 23.6°C · 24 mm rain
- Bima in SeptemberIndonesia · 568 kmHigh 32.3°C · Low 23.7°C · 12 mm rain
- Kendari in SeptemberIndonesia · 699 kmHigh 29.6°C · Low 23.4°C · 82 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Kupang) is explained once on the Kupang year overview and on the Sources, method and limits page.