Climate averages 1991–2020
Sumayl weather
in September.
A very hot, very dry month: the 4th warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a very hot month in Sumayl: daytime highs average 34.2°C and nights cool to about 18.6°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 1.0 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 27 min on an average September day.
The nearest other city in this atlas is Simele (0 km away). In September its highs average 34.1°C, about as warm as Sumayl, with 1.0 mm of rain.
Among the 59 cities listed in Iraq, Sumayl ranks 52nd of 59 for the warmest September highs and joint 50th of 59 for the driest September (rainfall, lowest first). The mean September high of those 59 cities is 39.2°C; Sumayl is 5.0°C cooler than that mean.
From September to October, average highs fall by 7.1°C to 27.1°C, and monthly rainfall rises from 1.0 mm to 24 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
Sumayl climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 10.1°C0.6°C | 0.6°C | 83 | 10.1 | 9.910 h |
| February | 11.9°C1.3°C | 1.3°C | 75 | 10.0 | 10.811 h |
| March | 16.3°C4.6°C | 4.6°C | 82 | 10.1 | 11.912 h |
| April | 21.9°C9.2°C | 9.2°C | 58 | 8.6 | 13.113 h |
| May | 28.4°C14.3°C | 14.3°C | 25 | 4.2 | 14.114 h |
| June | 35.5°C19.7°C | 19.7°C | 1.2 | 0.4 | 14.615 h |
| July | 39.7°C23.4°C | 23.4°C | 0.3 | 0.1 | 14.414 h |
| August | 39.2°C23.0°C | 23.0°C | 0.2 | 0.0 | 13.614 h |
| September, selected | 34.2°C18.6°C | 18.6°C | 1.0 | 0.3 | 12.512 h |
| October | 27.1°C13.7°C | 13.7°C | 24 | 3.3 | 11.311 h |
| November | 17.8°C6.8°C | 6.8°C | 52 | 6.2 | 10.210 h |
| December | 12.0°C2.4°C | 2.4°C | 75 | 8.8 | 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
- Simele in SeptemberIraq · 0 kmHigh 34.1°C · Low 18.4°C · 1.0 mm rain
- Dihok in SeptemberIraq · 12 kmHigh 34.0°C · Low 18.7°C · 0.8 mm rain
- Sīnah in SeptemberIraq · 18 kmHigh 33.9°C · Low 17.9°C · 0.8 mm rain
- Zaxo in SeptemberIraq · 35 kmHigh 33.8°C · Low 17.7°C · 1.4 mm rain
- Silopi in SeptemberTurkey · 55 kmHigh 33.3°C · Low 16.6°C · 1.1 mm rain
- Al Mawşil al Jadīdah in SeptemberIraq · 63 kmHigh 37.2°C · Low 22.6°C · 0.6 mm rain
- Cizre in SeptemberTurkey · 79 kmHigh 34.6°C · Low 18.4°C · 1.4 mm rain
- 'Ākra in SeptemberIraq · 93 kmHigh 33.8°C · Low 18.4°C · 1.4 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 Sumayl) is explained once on the Sumayl year overview and on the Sources, method and limits page.
Simele lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.