Ar Rumaythah climate — normals and trends
Ar Rumaythah (Iraq) has a hot desert climate (BWh) under the Köppen-Geiger classification. Its mean annual temperature is 25.6 °C and it receives 91 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 (37.8 °C on average) and the coldest is January (11.5 °C). Rainfall peaks in January.
Ar Rumaythah averages 2 frost days, 210 hot days (≥ 30 °C) and 18 rainy days per year.
Ar Rumaythah has warmed by +2.8 °C between 1940 and 2025, or +0.33 °C per decade. This trend is statistically significant.
The number of frost days there went from about 3 to 1 per year over the period.
The hottest day of the period reached 52.1 °C (on 27 July 2021) and the coldest -5.9 °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
Ar RumaythahMuthanna Governorate
- coords
- 31.53°, 45.20°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.6°C
Average daily high
32.3°C
Average daily low
18.9°C
Annual rainfall
91mm
Sunshine / day
11.2h
Mean relative humidity
34%
Average peak wind
22.6km/h
Seasonal range
26.3°C
Frost days (< 0 °C)
2 d/yr
Hot days (≥ 30 °C)
210 d/yr
Rainy days (≥ 1 mm)
18 d/yr
Annual snowfall
0.0 cm
Average feels-like high
29.5 °C
Average feels-like low
15.8 °C
Average peak gust
36.7 km/h
Tropical nights (≥ 20 °C)
182 d/yr
Solar radiation
20.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.8 °C
since 1940
+0.3 °C per decade · r² = 0.52 · 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
52.1 °C
27 July 2021
Coldest day
-5.9 °C
20 January 1964
Wettest day
33 mm
2 May 2013
Windiest day
55.1 km/h
17 April 1964
Strongest gust
87.5 km/h
25 March 2003
Hottest feels-like
53.5 °C
29 July 2020
Coldest feels-like
-12.0 °C
20 January 1964
Sunniest day
13.9 h
11 June 1941
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 | 19.2 °C | +1.9 °C | 10 mm | -8 mm |
| Feb | 18.4 °C | -2.0 °C | 4 mm | -9 mm |
| Mar | 26.1 °C | +0.6 °C | 38 mm | +24 mm |
| Apr | 34.1 °C | +2.1 °C | 5 mm | -6 mm |
| May | 41.5 °C | +3.0 °C | 2 mm | -2 mm |
| Jun | 44.7 °C | +1.7 °C | 0 mm | 0 mm |
| Jul | 46.4 °C | +1.4 °C | 0 mm | 0 mm |
| Aug | 47.2 °C | +2.2 °C | 0 mm | +0 mm |
| Sep | 42.1 °C | +0.4 °C | 0 mm | -0 mm |
| Oct | 36.2 °C | +1.1 °C | 0 mm | -3 mm |
| Nov | 28.9 °C | +3.4 °C | 1 mm | -12 mm |
| Dec | 19.4 °C | +0.5 °C | 41 mm | +24 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 Ar Rumaythah?
Ar Rumaythah has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 25.6 °C and it receives 91 mm of precipitation per year.
What is the hottest day ever recorded in Ar Rumaythah?
The hottest day measured in Ar Rumaythah between 1940 and 2025 was 27 July 2021, reaching 52.1 °C.
What is the coldest day in Ar Rumaythah?
The coldest day measured in Ar Rumaythah between 1940 and 2025 was 20 January 1964, at -5.9 °C.
Does it snow in Ar Rumaythah?
Almost never: Ar Rumaythah sees virtually no snow, with about 2 frost days per year.
Has the climate of Ar Rumaythah warmed?
Yes: Ar Rumaythah warmed by +2.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ar Rumaythah?
The wettest day measured in Ar Rumaythah between 1940 and 2025 was 2 May 2013, with 33 mm of rain in 24 hours.
What was the windiest day in Ar Rumaythah?
The windiest day measured in Ar Rumaythah between 1940 and 2025 was 17 April 1964, with winds reaching 55.1 km/h.
What is the warmest month in Ar Rumaythah?
The warmest month in Ar Rumaythah is July (37.8 °C on average); the coldest is January (11.5 °C).
How much does it rain in Ar Rumaythah?
Ar Rumaythah receives on average 91 mm of precipitation per year, spread over about 18 rainy days.
Is it sunny in Ar Rumaythah?
Ar Rumaythah gets on average 11.2 hours of sunshine per day, roughly 4,088 hours per year over 1940-2025.
Are there tropical nights in Ar Rumaythah?
Yes: Ar Rumaythah has on average 182 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ar Rumaythah?
In Ar Rumaythah, between 1940 and 2025, the highest apparent temperature reached 53.5 °C on 29 July 2020, and the lowest was -12.0 °C on 20 January 1964.
Compare Ar Rumaythah with another city
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Nearby cities
The climate around Ar Rumaythah