Climate averages 1991–2020
Nahāvand weather
in September.
A hot, very dry month: the 4th 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 Nahāvand: daytime highs average 29.6°C and nights cool to about 16.4°C. By daytime temperature it is the 4th warmest of the 12 months.
Rain is very rare: less than 1 mm falls in a typical September (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 25 min on an average September day.
The nearest other city in this atlas is Malāyer (43 km away). In September its highs average 28.8°C, 0.8°C cooler than Nahāvand, with 1.0 mm of rain.
Among the 128 cities listed in Iran, Nahāvand ranks joint 71st of 128 for the warmest September highs and joint 42nd of 128 for the driest September (rainfall, lowest first). The mean September high of those 128 cities is 31.0°C; Nahāvand is 1.5°C cooler than that mean.
From September to October, average highs fall by 7.4°C to 22.2°C, and monthly rainfall rises from under 1 mm to 25 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
Nahāvand climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 3.5°C-5.8°C | -5.8°C | 64 | 9.7 | 10.110 h |
| February | 5.3°C-4.3°C | -4.3°C | 67 | 10.1 | 10.911 h |
| March | 11.1°C0.4°C | 0.4°C | 91 | 11.3 | 11.912 h |
| April | 17.2°C5.8°C | 5.8°C | 72 | 11.3 | 13.013 h |
| May | 23.2°C11.7°C | 11.7°C | 31 | 7.2 | 13.914 h |
| June | 30.4°C17.6°C | 17.6°C | 2.6 | 0.9 | 14.414 h |
| July | 34.6°C21.1°C | 21.1°C | 0.7 | 0.1 | 14.214 h |
| August | 34.4°C20.7°C | 20.7°C | 0.5 | 0.2 | 13.413 h |
| September, selected | 29.6°C16.4°C | 16.4°C | 0.9 | 0.2 | 12.412 h |
| October | 22.2°C10.3°C | 10.3°C | 25 | 4.4 | 11.411 h |
| November | 13.1°C3.1°C | 3.1°C | 59 | 8.3 | 10.410 h |
| December | 7.1°C-2.4°C | -2.4°C | 62 | 8.1 | 9.910 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
- Malāyer in SeptemberIran · 43 kmHigh 28.8°C · Low 14.3°C · 1.0 mm rain
- Borūjerd in SeptemberIran · 48 kmHigh 30.6°C · Low 17.6°C · 2.2 mm rain
- Hamadān in SeptemberIran · 69 kmHigh 29.4°C · Low 16.6°C · 2.0 mm rain
- Khorramabad in SeptemberIran · 78 kmHigh 33.4°C · Low 17.3°C · 0.7 mm rain
- Dorūd in SeptemberIran · 100 kmHigh 31.1°C · Low 17.9°C · 1.0 mm rain
- Kūhdasht in SeptemberIran · 102 kmHigh 32.5°C · Low 14.6°C · 1.3 mm rain
- Qorveh in SeptemberIran · 120 kmHigh 27.4°C · Low 12.1°C · 1.0 mm rain
- Kermanshah in SeptemberIran · 121 kmHigh 31.4°C · Low 16.5°C · 1.0 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 Nahāvand) is explained once on the Nahāvand year overview and on the Sources, method and limits page.