Climate averages 1991–2020
Cianjur weather
in September.
A hot, moderately wet month: the 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 Cianjur: daytime highs average 29.9°C and nights cool to about 20.8°C. By daytime temperature it is the warmest month of the year.
Expect about 79 mm of rain on roughly 11 days, which makes September a moderately wet month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 04 min on an average September day.
The nearest other city in this atlas is Ciranjang-hilir (13 km away). In September its highs average 29.9°C, about as warm as Cianjur, with 79 mm of rain.
Among the 200 cities listed in Indonesia, Cianjur ranks joint 107th of 200 for the warmest September highs and joint 106th of 200 for the driest September (rainfall, lowest first). The mean September high of those 200 cities is 30.1°C; Cianjur is 0.2°C cooler than that mean.
From September to October, average highs fall by 0.6°C to 29.3°C, and monthly rainfall rises from 79 mm to 228 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
Cianjur climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.3°C21.2°C | 21.2°C | 305 | 29.1 | 12.512 h |
| February | 27.4°C21.1°C | 21.1°C | 293 | 27.3 | 12.312 h |
| March | 27.9°C21.2°C | 21.2°C | 299 | 29.4 | 12.112 h |
| April | 28.1°C21.3°C | 21.3°C | 258 | 27.0 | 12.012 h |
| May | 28.2°C21.1°C | 21.1°C | 140 | 21.8 | 11.812 h |
| June | 28.3°C20.7°C | 20.7°C | 83 | 14.8 | 11.712 h |
| July | 28.7°C20.3°C | 20.3°C | 67 | 10.7 | 11.812 h |
| August | 29.5°C20.4°C | 20.4°C | 55 | 8.2 | 11.912 h |
| September, selected | 29.9°C20.8°C | 20.8°C | 79 | 11.1 | 12.112 h |
| October | 29.3°C21.3°C | 21.3°C | 228 | 19.9 | 12.312 h |
| November | 28.3°C21.5°C | 21.5°C | 328 | 26.4 | 12.412 h |
| December | 27.6°C21.3°C | 21.3°C | 322 | 27.7 | 12.513 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
- Ciranjang-hilir in SeptemberIndonesia · 13 kmHigh 29.9°C · Low 21.0°C · 79 mm rain
- Sukabumi in SeptemberIndonesia · 26 kmHigh 28.8°C · Low 20.0°C · 113 mm rain
- Padalarang in SeptemberIndonesia · 37 kmHigh 27.7°C · Low 19.6°C · 105 mm rain
- Caringin in SeptemberIndonesia · 37 kmHigh 29.9°C · Low 21.1°C · 153 mm rain
- Cicurug in SeptemberIndonesia · 40 kmHigh 29.7°C · Low 20.9°C · 153 mm rain
- Purwakarta in SeptemberIndonesia · 45 kmHigh 32.4°C · Low 22.7°C · 58 mm rain
- Cimahi in SeptemberIndonesia · 45 kmHigh 27.2°C · Low 19.0°C · 105 mm rain
- Bogor in SeptemberIndonesia · 46 kmHigh 30.6°C · Low 21.5°C · 126 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 Cianjur) is explained once on the Cianjur year overview and on the Sources, method and limits page.
Ciranjang-hilir lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.