Climate averages 1991–2020
Behshahr weather
in September.
A hot, moderately wet month: the 4th warmest and the joint 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Behshahr: daytime highs average 28.5°C and nights cool to about 20.8°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 71 mm of rain on roughly 8 days, which makes September a moderately wet month (the joint 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 27 min on an average September day.
The nearest other city in this atlas is Sari (46 km away). In September its highs average 28.2°C, about as warm as Behshahr, with 114 mm of rain.
Among the 128 cities listed in Iran, Behshahr ranks 91st of 128 for the warmest September highs and 120th of 128 for the driest September (rainfall, lowest first). The mean September high of those 128 cities is 31.0°C; Behshahr is 2.5°C cooler than that mean.
From September to October, average highs fall by 4.7°C to 23.9°C, and monthly rainfall rises from 71 mm to 78 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
Behshahr climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 12.7°C3.6°C | 3.6°C | 64 | 7.4 | 10.010 h |
| February | 13.1°C3.8°C | 3.8°C | 65 | 8.9 | 10.811 h |
| March | 16.4°C7.2°C | 7.2°C | 71 | 10.1 | 11.912 h |
| April | 20.7°C11.7°C | 11.7°C | 50 | 8.1 | 13.113 h |
| May | 25.1°C16.6°C | 16.6°C | 33 | 5.8 | 14.114 h |
| June | 28.9°C20.8°C | 20.8°C | 25 | 4.4 | 14.615 h |
| July | 31.2°C23.5°C | 23.5°C | 25 | 4.7 | 14.414 h |
| August | 32.2°C23.8°C | 23.8°C | 22 | 4.6 | 13.614 h |
| September, selected | 28.5°C20.8°C | 20.8°C | 71 | 8.3 | 12.512 h |
| October | 23.9°C15.6°C | 15.6°C | 78 | 7.9 | 11.311 h |
| November | 18.0°C9.8°C | 9.8°C | 87 | 8.8 | 10.310 h |
| December | 14.5°C5.8°C | 5.8°C | 59 | 7.5 | 9.710 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
- Sari in SeptemberIran · 46 kmHigh 28.2°C · Low 19.1°C · 114 mm rain
- Qā’em Shahr in SeptemberIran · 66 kmHigh 27.4°C · Low 18.8°C · 98 mm rain
- Bābol in SeptemberIran · 80 kmHigh 27.7°C · Low 20.2°C · 98 mm rain
- Āmol in SeptemberIran · 110 kmHigh 24.8°C · Low 18.8°C · 167 mm rain
- Semnan in SeptemberIran · 125 kmHigh 29.8°C · Low 18.0°C · 1.7 mm rain
- Shahrud in SeptemberIran · 131 kmHigh 27.0°C · Low 15.3°C · 24 mm rain
- Gonbad-e Kāvūs in SeptemberIran · 156 kmHigh 30.9°C · Low 18.6°C · 36 mm rain
- Būmahen in SeptemberIran · 185 kmHigh 25.7°C · Low 17.1°C · 5.7 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 Behshahr) is explained once on the Behshahr year overview and on the Sources, method and limits page.