Climate averages 1991–2020
Bandar-e Emam Khomeyni weather
in September.
A very hot, very dry month: the 4th warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a very hot month in Bandar-e Emam Khomeyni: daytime highs average 38.2°C and nights cool to about 28.6°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 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 22 min on an average September day.
The nearest other city in this atlas is Bandar-e Māhshahr (16 km away). In September its highs average 42.2°C, 4.0°C warmer than Bandar-e Emam Khomeyni, with almost no rain (under 1 mm).
Among the 128 cities listed in Iran, Bandar-e Emam Khomeyni ranks 15th of 128 for the warmest September highs and joint 17th of 128 for the driest September (rainfall, lowest first). The mean September high of those 128 cities is 31.0°C; Bandar-e Emam Khomeyni is 7.1°C warmer than that mean.
From September to October, average highs fall by 5.3°C to 32.9°C, and monthly rainfall rises from under 1 mm to 5.4 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
Bandar-e Emam Khomeyni climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 16.7°C10.3°C | 10.3°C | 47 | 5.8 | 10.410 h |
| February | 19.0°C11.7°C | 11.7°C | 27 | 3.8 | 11.111 h |
| March | 23.9°C15.5°C | 15.5°C | 28 | 4.0 | 12.012 h |
| April | 30.0°C20.8°C | 20.8°C | 9.6 | 1.8 | 12.913 h |
| May | 36.5°C26.4°C | 26.4°C | 3.2 | 0.4 | 13.714 h |
| June | 40.5°C30.0°C | 30.0°C | 0.1 | 0.1 | 14.114 h |
| July | 41.6°C31.8°C | 31.8°C | 0.1 | 0.0 | 13.914 h |
| August | 41.4°C31.6°C | 31.6°C | 0 | 0.0 | 13.213 h |
| September, selected | 38.2°C28.6°C | 28.6°C | 0.3 | 0.1 | 12.412 h |
| October | 32.9°C24.2°C | 24.2°C | 5.4 | 0.9 | 11.511 h |
| November | 24.2°C17.3°C | 17.3°C | 65 | 4.0 | 10.611 h |
| December | 18.5°C12.0°C | 12.0°C | 56 | 5.6 | 10.210 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
- Bandar-e Māhshahr in SeptemberIran · 16 kmHigh 42.2°C · Low 26.7°C · 0.6 mm rain
- Abadan in SeptemberIran · 77 kmHigh 42.5°C · Low 27.4°C · 0.1 mm rain
- Al Fāw in SeptemberIraq · 79 kmHigh 38.1°C · Low 29.3°C · 0 mm rain
- Khorramshahr in SeptemberIran · 88 kmHigh 42.8°C · Low 27.5°C · 0.3 mm rain
- Rāmhormoz in SeptemberIran · 105 kmHigh 40.9°C · Low 25.4°C · 0.7 mm rain
- Ahvaz in SeptemberIran · 106 kmHigh 42.9°C · Low 26.8°C · 0.9 mm rain
- Behbahān in SeptemberIran · 111 kmHigh 40.2°C · Low 23.7°C · 1.4 mm rain
- Abū al-Kahṣīb in SeptemberIraq · 117 kmHigh 42.9°C · Low 27.5°C · 0.5 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 Bandar-e Emam Khomeyni) is explained once on the Bandar-e Emam Khomeyni year overview and on the Sources, method and limits page.