Sumayl climate — normals and trends
Sumayl has a hot-summer mediterranean climate, averaging 19.2 °C annually with 492 mm of rain per year.
Climate normals · ERA5
SumaylDuhok Governorate
- coords
- 36.86°, 42.85°
- period
- 1940–2025 · 86 yrs
The normals for this period
The average of every indicator across the whole window: temperature, water, sky, wind and notable days.
Mean daily temperature
19.2°C
Average daily high
25.3°C
Average daily low
13.2°C
Annual rainfall
492mm
Sunshine / day
10.7h
Mean relative humidity
52%
Average peak wind
12.1km/h
Seasonal range
27.6°C
Frost days (< 0 °C)
18 d/yr
Hot days (≥ 30 °C)
149 d/yr
Rainy days (≥ 1 mm)
66 d/yr
Annual snowfall
10.9 cm
Average feels-like high
24.0 °C
Average feels-like low
11.5 °C
Average peak gust
26.3 km/h
Tropical nights (≥ 20 °C)
104 d/yr
Solar radiation
18.7 MJ/m²
Has the climate changed?
What the yearly averages say about warming here, and whether the slope is statistically solid.
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.30 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
Climate month by month
How an average year unfolds: when it rains, when it turns hot, when the sun is out.
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
The most extreme days ever measured here, then the year-by-year detail.
Hottest day
48.5 °C
25 July 2025
Coldest day
-11.5 °C
8 February 1950
Wettest day
64 mm
26 November 1968
Windiest day
35.7 km/h
25 March 2003
Strongest gust
81.4 km/h
5 February 1986
Hottest feels-like
47.9 °C
27 July 2025
Coldest feels-like
-15.5 °C
8 February 1950
Snowiest day
16.9 cm
2 January 1992
Sunniest day
14.0 h
20 May 1940
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and compare it with the normal: warmer, drier, more extreme?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 14.1 °C | +3.9 °C | 10 mm | -73 mm |
| Feb | 12.0 °C | -0.2 °C | 43 mm | -33 mm |
| Mar | 22.1 °C | +5.7 °C | 31 mm | -54 mm |
| Apr | 25.6 °C | +3.0 °C | 29 mm | -39 mm |
| May | 34.2 °C | +4.5 °C | 14 mm | -15 mm |
| Jun | 39.2 °C | +2.6 °C | 0 mm | -1 mm |
| Jul | 42.8 °C | +2.2 °C | 0 mm | -0 mm |
| Aug | 42.6 °C | +2.5 °C | 0 mm | -0 mm |
| Sep | 36.4 °C | +0.8 °C | 0 mm | -1 mm |
| Oct | 30.1 °C | +2.1 °C | 3 mm | -17 mm |
| Nov | 23.5 °C | +4.5 °C | 66 mm | +13 mm |
| Dec | 13.3 °C | +0.9 °C | 116 mm | +40 mm |
The year's extremes
What was the weather like that day?
The weather actually measured on a given date, anywhere in the covered window.
Climate at a glance
What these normals say about the place, in a few sentences, and the notions needed to read them.
Sumayl (Iraq) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 19.2 °C and it receives 492 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (33.4 °C on average) and the coldest is January (5.8 °C). Rainfall peaks in March.
Sumayl averages 18 frost days, 149 hot days (≥ 30 °C) and 66 rainy days per year.
Sumayl has warmed by +1.9 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.
The number of frost days there went from about 23 to 13 per year over the period.
The hottest day of the period reached 48.5 °C (on 25 July 2025) and the coldest -11.5 °C (on 8 February 1950).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Compare Sumayl with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Sumayl
Other cities — Iraq
Frequently asked questions
What is the climate of Sumayl?
Sumayl has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 19.2 °C and it receives 492 mm of precipitation per year.
What is the hottest day ever recorded in Sumayl?
The hottest day measured in Sumayl between 1940 and 2025 was 25 July 2025, reaching 48.5 °C.
What is the coldest day in Sumayl?
The coldest day measured in Sumayl between 1940 and 2025 was 8 February 1950, at -11.5 °C.
Does it snow in Sumayl?
Yes. Sumayl gets on average 10.9 cm of snow per year and has around 18 frost days.
Has the climate of Sumayl warmed?
Yes: Sumayl warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Sumayl?
The wettest day measured in Sumayl between 1940 and 2025 was 26 November 1968, with 64 mm of rain in 24 hours.
What was the windiest day in Sumayl?
The windiest day measured in Sumayl between 1940 and 2025 was 25 March 2003, with winds reaching 35.7 km/h.
What is the warmest month in Sumayl?
The warmest month in Sumayl is July (33.4 °C on average); the coldest is January (5.8 °C).
How much does it rain in Sumayl?
Sumayl receives on average 492 mm of precipitation per year, spread over about 66 rainy days.
Is it sunny in Sumayl?
Sumayl gets on average 10.7 hours of sunshine per day, roughly 3,905 hours per year over 1940-2025.
What is the biggest single-day snowfall in Sumayl?
The heaviest 24-hour snowfall measured in Sumayl between 1940 and 2025 was 2 January 1992, with 16.9 cm.
Are there tropical nights in Sumayl?
Yes: Sumayl has on average 104 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Sumayl?
In Sumayl, between 1940 and 2025, the highest apparent temperature reached 47.9 °C on 27 July 2025, and the lowest was -15.5 °C on 8 February 1950.
These forecasts and records come from our own weather API. Developer documentation →