Climate averages 1991–2020
Siirt weather
in September.
A 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 hot month in Siirt: daytime highs average 29.6°C and nights cool to about 14.7°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 6.2 mm of rain on roughly 1 day, which makes September a very dry month (the 4th 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 Tatvan (69 km away). In September its highs average 24.0°C, 5.6°C cooler than Siirt, with 14 mm of rain.
Among the 138 cities listed in Turkey, Siirt ranks joint 43rd of 138 for the warmest September highs and 16th of 138 for the driest September (rainfall, lowest first). The mean September high of those 138 cities is 27.1°C; Siirt is 2.5°C warmer than that mean.
From September to October, average highs fall by 7.4°C to 22.2°C, and monthly rainfall rises from 6.2 mm to 46 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
Siirt climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 5.4°C-3.9°C | -3.9°C | 112 | 12.3 | 9.910 h |
| February | 7.1°C-3.1°C | -3.1°C | 118 | 11.8 | 10.811 h |
| March | 11.9°C0.4°C | 0.4°C | 134 | 13.8 | 11.912 h |
| April | 17.3°C5.0°C | 5.0°C | 114 | 13.1 | 13.213 h |
| May | 23.0°C9.9°C | 9.9°C | 60 | 9.0 | 14.214 h |
| June | 29.8°C15.3°C | 15.3°C | 5.9 | 1.7 | 14.715 h |
| July | 34.7°C19.5°C | 19.5°C | 0.9 | 0.3 | 14.515 h |
| August | 34.7°C19.3°C | 19.3°C | 0.7 | 0.2 | 13.614 h |
| September, selected | 29.6°C14.7°C | 14.7°C | 6.2 | 1.1 | 12.512 h |
| October | 22.2°C9.2°C | 9.2°C | 46 | 5.5 | 11.211 h |
| November | 13.4°C2.3°C | 2.3°C | 74 | 7.5 | 10.210 h |
| December | 7.4°C-2.1°C | -2.1°C | 108 | 10.5 | 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
- Tatvan in SeptemberTurkey · 69 kmHigh 24.0°C · Low 14.4°C · 14 mm rain
- Cizre in SeptemberTurkey · 70 kmHigh 34.6°C · Low 18.4°C · 1.4 mm rain
- Batman in SeptemberTurkey · 71 kmHigh 32.9°C · Low 19.2°C · 6.0 mm rain
- Midyat in SeptemberTurkey · 78 kmHigh 31.6°C · Low 18.8°C · 6.6 mm rain
- Silopi in SeptemberTurkey · 89 kmHigh 33.3°C · Low 16.6°C · 1.1 mm rain
- Muş in SeptemberTurkey · 98 kmHigh 25.7°C · Low 13.7°C · 23 mm rain
- Zaxo in SeptemberIraq · 109 kmHigh 33.8°C · Low 17.7°C · 1.4 mm rain
- Bismil in SeptemberTurkey · 113 kmHigh 33.6°C · Low 18.5°C · 5.3 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 Siirt) is explained once on the Siirt year overview and on the Sources, method and limits page.