Climate averages 1991–2020
Shīrvān weather
in September.
A warm, very dry month: the 4th warmest and the 2nd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Shīrvān: daytime highs average 26.2°C and nights cool to about 13.9°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 3.6 mm of rain on fewer than one day, which makes September a very dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 28 min on an average September day.
The nearest other city in this atlas is Bojnūrd (54 km away). In September its highs average 27.4°C, 1.1°C warmer than Shīrvān, with 6.5 mm of rain.
Among the 128 cities listed in Iran, Shīrvān ranks 113th of 128 for the warmest September highs and 97th of 128 for the driest September (rainfall, lowest first). The mean September high of those 128 cities is 31.0°C; Shīrvān is 4.8°C cooler than that mean.
From September to October, average highs fall by 6.2°C to 20.1°C, and monthly rainfall rises from 3.6 mm to 11 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
Shīrvān climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 3.8°C-5.2°C | -5.2°C | 26 | 5.4 | 9.910 h |
| February | 5.4°C-4.1°C | -4.1°C | 34 | 6.7 | 10.811 h |
| March | 11.7°C0.9°C | 0.9°C | 49 | 9.2 | 11.912 h |
| April | 18.3°C6.7°C | 6.7°C | 38 | 8.0 | 13.113 h |
| May | 23.1°C11.6°C | 11.6°C | 23 | 5.3 | 14.214 h |
| June | 28.1°C16.0°C | 16.0°C | 6.7 | 1.7 | 14.715 h |
| July | 30.7°C18.6°C | 18.6°C | 4.2 | 1.0 | 14.514 h |
| August | 29.9°C17.6°C | 17.6°C | 2.6 | 0.7 | 13.614 h |
| September, selected | 26.2°C13.9°C | 13.9°C | 3.6 | 0.9 | 12.512 h |
| October | 20.1°C8.9°C | 8.9°C | 11 | 2.7 | 11.311 h |
| November | 12.3°C2.7°C | 2.7°C | 21 | 5.0 | 10.210 h |
| December | 6.7°C-2.2°C | -2.2°C | 18 | 4.5 | 9.610 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
- Bojnūrd in SeptemberIran · 54 kmHigh 27.4°C · Low 13.4°C · 6.5 mm rain
- Qūchān in SeptemberIran · 61 kmHigh 25.1°C · Low 11.6°C · 4.8 mm rain
- Ashgabat in SeptemberTurkmenistan · 73 kmHigh 29.6°C · Low 17.8°C · 2.6 mm rain
- Sabzevar in SeptemberIran · 133 kmHigh 31.0°C · Low 16.4°C · 1.2 mm rain
- Neyshābūr in SeptemberIran · 153 kmHigh 29.0°C · Low 12.5°C · 3.1 mm rain
- Mashhad in SeptemberIran · 193 kmHigh 27.9°C · Low 13.6°C · 2.1 mm rain
- Marāgheh (Razavi Khorasan), Iran in SeptemberIran · 231 kmHigh 25.5°C · Low 13.3°C · 1.2 mm rain
- Kāshmar in SeptemberIran · 245 kmHigh 30.5°C · Low 15.6°C · 0.2 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 Shīrvān) is explained once on the Shīrvān year overview and on the Sources, method and limits page.