Climate averages 1991–2020
Sumayl weather
in December.
A cool, moderately wet month: the 10th warmest and the joint 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cool month in Sumayl: daytime highs average 12.0°C and nights cool to about 2.4°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 75 mm of rain on roughly 9 days, which makes December a moderately wet month (the joint 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 41 min on an average December day.
The nearest other city in this atlas is Simele (0 km away). In December its highs average 12.2°C, about as warm as Sumayl, with 75 mm of rain.
Among the 59 cities listed in Iraq, Sumayl ranks joint 51st of 59 for the warmest December highs and joint 42nd of 59 for the driest December (rainfall, lowest first). The mean December high of those 59 cities is 16.3°C; Sumayl is 4.3°C cooler than that mean.
From December to January, average highs fall by 1.9°C to 10.1°C, and monthly rainfall rises from 75 mm to 83 mm.
The annual picture
December 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 | 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, selected | 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
December in nearby cities
- Simele in DecemberIraq · 0 kmHigh 12.2°C · Low 2.3°C · 75 mm rain
- Dihok in DecemberIraq · 12 kmHigh 12.2°C · Low 2.3°C · 83 mm rain
- Sīnah in DecemberIraq · 18 kmHigh 11.5°C · Low 1.6°C · 83 mm rain
- Zaxo in DecemberIraq · 35 kmHigh 12.0°C · Low 1.4°C · 105 mm rain
- Silopi in DecemberTurkey · 55 kmHigh 11.5°C · Low 0.3°C · 98 mm rain
- Al Mawşil al Jadīdah in DecemberIraq · 63 kmHigh 14.0°C · Low 5.2°C · 62 mm rain
- Cizre in DecemberTurkey · 79 kmHigh 12.1°C · Low 1.4°C · 99 mm rain
- 'Ākra in DecemberIraq · 93 kmHigh 11.1°C · Low 1.3°C · 134 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.