Climate averages 1991–2020
Langsa weather
in September.
A hot, wet month: the 7th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Langsa: daytime highs average 29.6°C and nights cool to about 23.9°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 179 mm of rain on roughly 25 days, which makes September a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 09 min on an average September day.
The nearest other city in this atlas is Belawan (111 km away). In September its highs average 29.7°C, about as warm as Langsa, with 324 mm of rain.
Among the 200 cities listed in Indonesia, Langsa ranks joint 120th of 200 for the warmest September highs and 165th of 200 for the driest September (rainfall, lowest first). The mean September high of those 200 cities is 30.1°C; Langsa is 0.5°C cooler than that mean.
From September to October, average highs fall by 0.7°C to 28.9°C, and monthly rainfall rises from 179 mm to 225 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
Langsa climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.4°C23.2°C | 23.2°C | 137 | 20.8 | 11.912 h |
| February | 29.1°C23.3°C | 23.3°C | 88 | 16.3 | 12.012 h |
| March | 30.0°C23.8°C | 23.8°C | 109 | 18.8 | 12.112 h |
| April | 30.1°C24.3°C | 24.3°C | 133 | 23.3 | 12.212 h |
| May | 30.2°C24.6°C | 24.6°C | 148 | 23.6 | 12.312 h |
| June | 30.4°C24.6°C | 24.6°C | 100 | 18.0 | 12.412 h |
| July | 30.2°C24.3°C | 24.3°C | 102 | 18.3 | 12.412 h |
| August | 30.1°C24.2°C | 24.2°C | 126 | 20.8 | 12.312 h |
| September, selected | 29.6°C23.9°C | 23.9°C | 179 | 25.4 | 12.112 h |
| October | 28.9°C23.7°C | 23.7°C | 225 | 27.9 | 12.012 h |
| November | 28.3°C23.4°C | 23.4°C | 288 | 28.1 | 11.912 h |
| December | 28.0°C23.3°C | 23.3°C | 269 | 26.2 | 11.912 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
- Belawan in SeptemberIndonesia · 111 kmHigh 29.7°C · Low 23.2°C · 324 mm rain
- Binjai in SeptemberIndonesia · 112 kmHigh 29.7°C · Low 21.9°C · 306 mm rain
- Lhokseumawe in SeptemberIndonesia · 120 kmHigh 29.1°C · Low 24.8°C · 92 mm rain
- Sunggal in SeptemberIndonesia · 122 kmHigh 29.6°C · Low 22.2°C · 306 mm rain
- Medan in SeptemberIndonesia · 125 kmHigh 29.5°C · Low 22.5°C · 353 mm rain
- Percut in SeptemberIndonesia · 137 kmHigh 29.4°C · Low 23.2°C · 324 mm rain
- Perbaungan in SeptemberIndonesia · 148 kmHigh 29.4°C · Low 23.8°C · 219 mm rain
- Kabanjahe in SeptemberIndonesia · 163 kmHigh 25.0°C · Low 17.2°C · 247 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 Langsa) is explained once on the Langsa year overview and on the Sources, method and limits page.