Climate averages 1991–2020
Tajrīsh weather
in September.
A warm, very dry month: the 4th warmest and the 3rd 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 Tajrīsh: daytime highs average 26.7°C and nights cool to about 17.8°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 4.7 mm of rain on fewer than one day, which makes September a very dry month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 26 min on an average September day.
The nearest other city in this atlas is Tehran (12 km away). In September its highs average 29.9°C, 3.2°C warmer than Tajrīsh, with 4.7 mm of rain.
Among the 128 cities listed in Iran, Tajrīsh ranks 111th of 128 for the warmest September highs and joint 100th of 128 for the driest September (rainfall, lowest first). The mean September high of those 128 cities is 31.0°C; Tajrīsh is 4.4°C cooler than that mean.
From September to October, average highs fall by 7.2°C to 19.5°C, and monthly rainfall rises from 4.7 mm to 21 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
Tajrīsh climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 2.2°C-7.9°C | -7.9°C | 42 | 7.6 | 10.010 h |
| February | 3.8°C-6.1°C | -6.1°C | 49 | 8.5 | 10.911 h |
| March | 9.5°C-0.4°C | -0.4°C | 62 | 9.5 | 11.912 h |
| April | 16.4°C6.4°C | 6.4°C | 51 | 9.5 | 13.113 h |
| May | 22.9°C12.5°C | 12.5°C | 22 | 5.0 | 14.014 h |
| June | 29.4°C19.0°C | 19.0°C | 5.8 | 1.6 | 14.515 h |
| July | 32.3°C23.0°C | 23.0°C | 4.6 | 1.2 | 14.314 h |
| August | 31.3°C22.2°C | 22.2°C | 4.2 | 0.8 | 13.514 h |
| September, selected | 26.7°C17.8°C | 17.8°C | 4.7 | 0.9 | 12.412 h |
| October | 19.5°C11.2°C | 11.2°C | 21 | 4.1 | 11.311 h |
| November | 10.6°C2.2°C | 2.2°C | 45 | 7.1 | 10.310 h |
| December | 5.0°C-4.6°C | -4.6°C | 43 | 7.5 | 9.810 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
- Tehran in SeptemberIran · 12 kmHigh 29.9°C · Low 18.6°C · 4.7 mm rain
- Bāghestān in SeptemberIran · 32 kmHigh 31.2°C · Low 16.6°C · 2.5 mm rain
- Eslamshahr in SeptemberIran · 33 kmHigh 31.5°C · Low 17.3°C · 1.4 mm rain
- Pardīs in SeptemberIran · 35 kmHigh 24.6°C · Low 15.6°C · 5.7 mm rain
- Shahrīār in SeptemberIran · 37 kmHigh 30.3°C · Low 16.3°C · 1.6 mm rain
- Golestān in SeptemberIran · 39 kmHigh 31.7°C · Low 17.4°C · 1.4 mm rain
- Shahre Jadide Andisheh in SeptemberIran · 39 kmHigh 30.0°C · Low 15.9°C · 1.6 mm rain
- Karaj in SeptemberIran · 39 kmHigh 29.1°C · Low 15.4°C · 1.6 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 Tajrīsh) is explained once on the Tajrīsh year overview and on the Sources, method and limits page.
Tehran lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.