Climate averages 1991–2020
Selong weather
in September.
A hot, fairly dry month: the 3rd warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Selong: daytime highs average 29.4°C and nights cool to about 21.7°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 17 mm of rain on roughly 5 days, which makes September a fairly dry month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 03 min on an average September day.
The nearest other city in this atlas is Mataram (46 km away). In September its highs average 30.9°C, 1.4°C warmer than Selong, with 15 mm of rain.
Among the 200 cities listed in Indonesia, Selong ranks joint 130th of 200 for the warmest September highs and 15th of 200 for the driest September (rainfall, lowest first). The mean September high of those 200 cities is 30.1°C; Selong is 0.7°C cooler than that mean.
From September to October, average highs rise by 0.7°C to 30.1°C, and monthly rainfall rises from 17 mm to 51 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
Selong climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.6°C23.3°C | 23.3°C | 374 | 28.2 | 12.613 h |
| February | 28.7°C23.3°C | 23.3°C | 344 | 25.7 | 12.412 h |
| March | 28.9°C23.3°C | 23.3°C | 305 | 25.9 | 12.212 h |
| April | 28.9°C23.2°C | 23.2°C | 161 | 18.8 | 11.912 h |
| May | 29.0°C22.8°C | 22.8°C | 52 | 9.3 | 11.712 h |
| June | 28.6°C22.1°C | 22.1°C | 24 | 5.3 | 11.612 h |
| July | 28.2°C21.3°C | 21.3°C | 15 | 3.8 | 11.712 h |
| August | 28.7°C21.1°C | 21.1°C | 8.1 | 2.8 | 11.812 h |
| September, selected | 29.4°C21.7°C | 21.7°C | 17 | 5.3 | 12.012 h |
| October | 30.1°C22.8°C | 22.8°C | 51 | 11.2 | 12.312 h |
| November | 29.9°C23.5°C | 23.5°C | 158 | 20.1 | 12.513 h |
| December | 28.9°C23.5°C | 23.5°C | 313 | 27.6 | 12.613 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
- Mataram in SeptemberIndonesia · 46 kmHigh 30.9°C · Low 23.1°C · 15 mm rain
- Klungkung in SeptemberIndonesia · 125 kmHigh 28.6°C · Low 22.8°C · 41 mm rain
- Ubud in SeptemberIndonesia · 140 kmHigh 27.8°C · Low 21.5°C · 50 mm rain
- Denpasar in SeptemberIndonesia · 145 kmHigh 26.4°C · Low 23.1°C · 39 mm rain
- Sukawati in SeptemberIndonesia · 164 kmHigh 27.3°C · Low 22.6°C · 45 mm rain
- Singaraja in SeptemberIndonesia · 170 kmHigh 29.6°C · Low 23.4°C · 11 mm rain
- Banjar, Indonesia in SeptemberIndonesia · 180 kmHigh 31.5°C · Low 24.1°C · 39 mm rain
- Negara in SeptemberIndonesia · 213 kmHigh 28.6°C · Low 23.6°C · 14 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 Selong) is explained once on the Selong year overview and on the Sources, method and limits page.