AlZwya climate — normals and trends
AlZwya (Iraq) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 22.5 °C and it receives 226 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 (36.2 °C on average) and the coldest is January (8.4 °C). Rainfall peaks in January.
AlZwya averages 7 frost days, 180 hot days (≥ 30 °C) and 38 rainy days per year.
AlZwya has warmed by +2.3 °C between 1940 and 2025, or +0.28 °C per decade. This trend is statistically significant.
The number of frost days there went from about 10 to 4 per year over the period.
The hottest day of the period reached 50.1 °C (on 18 July 1978) and the coldest -6.2 °C (on 20 January 1964).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
AlZwyaSalah ad Din
- coords
- 35.26°, 43.41°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
22.5°C
Average daily high
28.9°C
Average daily low
16.3°C
Annual rainfall
226mm
Sunshine / day
11.1h
Mean relative humidity
42%
Average peak wind
17.0km/h
Seasonal range
27.8°C
Frost days (< 0 °C)
7 d/yr
Hot days (≥ 30 °C)
180 d/yr
Rainy days (≥ 1 mm)
38 d/yr
Annual snowfall
0.2 cm
Average feels-like high
27.0 °C
Average feels-like low
13.8 °C
Average peak gust
31.4 km/h
Tropical nights (≥ 20 °C)
148 d/yr
Solar radiation
19.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.3 °C
since 1940
+0.3 °C per decade · r² = 0.44 · 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).
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
Hottest day
50.1 °C
18 July 1978
Coldest day
-6.2 °C
20 January 1964
Wettest day
59 mm
18 November 1960
Windiest day
54.8 km/h
1 March 1941
Strongest gust
103.0 km/h
21 March 1952
Hottest feels-like
51.5 °C
28 July 2020
Coldest feels-like
-11.2 °C
19 January 1964
Snowiest day
2.2 cm
6 February 1950
Sunniest day
14.0 h
20 May 1940
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 17.2 °C | +3.6 °C | 13 mm | -27 mm |
| Feb | 15.3 °C | -0.8 °C | 26 mm | -9 mm |
| Mar | 24.3 °C | +3.5 °C | 37 mm | -2 mm |
| Apr | 29.7 °C | +2.2 °C | 29 mm | +1 mm |
| May | 37.6 °C | +3.1 °C | 8 mm | -1 mm |
| Jun | 42.1 °C | +2.0 °C | 0 mm | -0 mm |
| Jul | 44.8 °C | +1.6 °C | 0 mm | -0 mm |
| Aug | 44.4 °C | +1.6 °C | 0 mm | -0 mm |
| Sep | 38.7 °C | 0.0 °C | 0 mm | -0 mm |
| Oct | 32.9 °C | +1.3 °C | 0 mm | -9 mm |
| Nov | 26.2 °C | +4.0 °C | 22 mm | -5 mm |
| Dec | 16.5 °C | +1.0 °C | 88 mm | +49 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of AlZwya?
AlZwya has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 22.5 °C and it receives 226 mm of precipitation per year.
What is the hottest day ever recorded in AlZwya?
The hottest day measured in AlZwya between 1940 and 2025 was 18 July 1978, reaching 50.1 °C.
What is the coldest day in AlZwya?
The coldest day measured in AlZwya between 1940 and 2025 was 20 January 1964, at -6.2 °C.
Does it snow in AlZwya?
Almost never: AlZwya sees virtually no snow, with about 7 frost days per year.
Has the climate of AlZwya warmed?
Yes: AlZwya warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in AlZwya?
The wettest day measured in AlZwya between 1940 and 2025 was 18 November 1960, with 59 mm of rain in 24 hours.
What was the windiest day in AlZwya?
The windiest day measured in AlZwya between 1940 and 2025 was 1 March 1941, with winds reaching 54.8 km/h.
What is the warmest month in AlZwya?
The warmest month in AlZwya is July (36.2 °C on average); the coldest is January (8.4 °C).
How much does it rain in AlZwya?
AlZwya receives on average 226 mm of precipitation per year, spread over about 38 rainy days.
Is it sunny in AlZwya?
AlZwya gets on average 11.1 hours of sunshine per day, roughly 4,052 hours per year over 1940-2025.
What is the biggest single-day snowfall in AlZwya?
The heaviest 24-hour snowfall measured in AlZwya between 1940 and 2025 was 6 February 1950, with 2.2 cm.
Are there tropical nights in AlZwya?
Yes: AlZwya has on average 148 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in AlZwya?
In AlZwya, between 1940 and 2025, the highest apparent temperature reached 51.5 °C on 28 July 2020, and the lowest was -11.2 °C on 19 January 1964.
Compare AlZwya with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around AlZwya