Bayjī climate — normals and trends
Bayjī (Iraq) has a hot desert climate (BWh) under the Köppen-Geiger classification. Its mean annual temperature is 22.5 °C and it receives 205 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 (36.1 °C on average) and the coldest is January (8.5 °C). Rainfall peaks in March.
Bayjī averages 7 frost days, 181 hot days (≥ 30 °C) and 36 rainy days per year.
Bayjī has warmed by +2.3 °C between 1940 and 2025, or +0.27 °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 50.2 °C (on 28 July 2020) and the coldest -6.8 °C (on 8 January 1942).
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
BayjīSalah ad Din
- coords
- 34.93°, 43.49°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
22.5°C
Average daily high
28.9°C
Average daily low
16.4°C
Annual rainfall
205mm
Sunshine / day
11.1h
Mean relative humidity
42%
Average peak wind
18.8km/h
Seasonal range
27.6°C
Frost days (< 0 °C)
7 d/yr
Hot days (≥ 30 °C)
181 d/yr
Rainy days (≥ 1 mm)
36 d/yr
Annual snowfall
0.2 cm
Average feels-like high
26.7 °C
Average feels-like low
13.6 °C
Average peak gust
32.6 km/h
Tropical nights (≥ 20 °C)
151 d/yr
Solar radiation
19.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.3 °C
since 1940
+0.3 °C per decade · r² = 0.45 · 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
50.2 °C
28 July 2020
Coldest day
-6.8 °C
8 January 1942
Wettest day
63 mm
12 April 2023
Windiest day
59.8 km/h
1 March 1941
Strongest gust
100.1 km/h
21 March 1952
Hottest feels-like
51.4 °C
28 July 2020
Coldest feels-like
-12.1 °C
19 January 1964
Snowiest day
2.1 cm
11 January 2008
Sunniest day
14.0 h
21 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 | 17.0 °C | +3.4 °C | 12 mm | -24 mm |
| Feb | 15.2 °C | -1.1 °C | 24 mm | -7 mm |
| Mar | 23.9 °C | +2.9 °C | 50 mm | +14 mm |
| Apr | 29.8 °C | +2.1 °C | 28 mm | +3 mm |
| May | 37.6 °C | +3.0 °C | 3 mm | -5 mm |
| Jun | 42.0 °C | +1.9 °C | 0 mm | -0 mm |
| Jul | 44.6 °C | +1.5 °C | 0 mm | -0 mm |
| Aug | 44.3 °C | +1.6 °C | 0 mm | 0 mm |
| Sep | 38.7 °C | 0.0 °C | 0 mm | -0 mm |
| Oct | 32.8 °C | +1.2 °C | 0 mm | -8 mm |
| Nov | 26.3 °C | +4.1 °C | 13 mm | -11 mm |
| Dec | 16.5 °C | +1.1 °C | 92 mm | +57 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 Bayjī?
Bayjī has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 22.5 °C and it receives 205 mm of precipitation per year.
What is the hottest day ever recorded in Bayjī?
The hottest day measured in Bayjī between 1940 and 2025 was 28 July 2020, reaching 50.2 °C.
What is the coldest day in Bayjī?
The coldest day measured in Bayjī between 1940 and 2025 was 8 January 1942, at -6.8 °C.
Does it snow in Bayjī?
Almost never: Bayjī sees virtually no snow, with about 7 frost days per year.
Has the climate of Bayjī warmed?
Yes: Bayjī warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Bayjī?
The wettest day measured in Bayjī between 1940 and 2025 was 12 April 2023, with 63 mm of rain in 24 hours.
What was the windiest day in Bayjī?
The windiest day measured in Bayjī between 1940 and 2025 was 1 March 1941, with winds reaching 59.8 km/h.
What is the warmest month in Bayjī?
The warmest month in Bayjī is July (36.1 °C on average); the coldest is January (8.5 °C).
How much does it rain in Bayjī?
Bayjī receives on average 205 mm of precipitation per year, spread over about 36 rainy days.
Is it sunny in Bayjī?
Bayjī 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 Bayjī?
The heaviest 24-hour snowfall measured in Bayjī between 1940 and 2025 was 11 January 2008, with 2.1 cm.
Are there tropical nights in Bayjī?
Yes: Bayjī has on average 151 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Bayjī?
In Bayjī, between 1940 and 2025, the highest apparent temperature reached 51.4 °C on 28 July 2020, and the lowest was -12.1 °C on 19 January 1964.
Compare Bayjī with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Bayjī