Ar Rastan climate — normals and trends
Ar Rastan (Syria) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 18.1 °C and it receives 222 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 August (27.3 °C on average) and the coldest is January (7.9 °C). Rainfall peaks in January.
Ar Rastan averages 7 frost days, 134 hot days (≥ 30 °C) and 51 rainy days per year.
Ar Rastan 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 11 to 3 per year over the period.
The hottest day of the period reached 44.9 °C (on 9 August 2025) and the coldest -14.0 °C (on 9 February 1949).
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 RastanHoms Governorate
- coords
- 34.93°, 36.73°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
18.1°C
Average daily high
24.6°C
Average daily low
12.9°C
Annual rainfall
222mm
Sunshine / day
11.0h
Mean relative humidity
61%
Average peak wind
18.5km/h
Seasonal range
19.4°C
Frost days (< 0 °C)
7 d/yr
Hot days (≥ 30 °C)
134 d/yr
Rainy days (≥ 1 mm)
51 d/yr
Annual snowfall
2.3 cm
Average feels-like high
23.0 °C
Average feels-like low
11.7 °C
Average peak gust
38.6 km/h
Tropical nights (≥ 20 °C)
70 d/yr
Solar radiation
19.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.3 °C
since 1940
+0.3 °C per decade · r² = 0.47 · 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
44.9 °C
9 August 2025
Coldest day
-14.0 °C
9 February 1949
Wettest day
40 mm
8 January 1979
Windiest day
52.2 km/h
14 April 1941
Strongest gust
105.1 km/h
18 February 1970
Hottest feels-like
46.7 °C
9 August 2025
Coldest feels-like
-19.5 °C
9 February 1949
Snowiest day
11.0 cm
18 December 1971
Sunniest day
13.7 h
28 June 1945
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 | 16.6 °C | +3.9 °C | 5 mm | -41 mm |
| Feb | 13.8 °C | -0.8 °C | 28 mm | -10 mm |
| Mar | 23.1 °C | +4.9 °C | 23 mm | -10 mm |
| Apr | 24.8 °C | +1.2 °C | 25 mm | +6 mm |
| May | 31.1 °C | +2.4 °C | 8 mm | -3 mm |
| Jun | 34.4 °C | +2.1 °C | 2 mm | -1 mm |
| Jul | 35.2 °C | +0.9 °C | 0 mm | -0 mm |
| Aug | 36.2 °C | +1.4 °C | 0 mm | -1 mm |
| Sep | 33.3 °C | +0.7 °C | 4 mm | +2 mm |
| Oct | 28.6 °C | +0.8 °C | 2 mm | -9 mm |
| Nov | 24.6 °C | +3.8 °C | 14 mm | -6 mm |
| Dec | 16.0 °C | +1.4 °C | 58 mm | +19 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 Rastan?
Ar Rastan has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 18.1 °C and it receives 222 mm of precipitation per year.
What is the hottest day ever recorded in Ar Rastan?
The hottest day measured in Ar Rastan between 1940 and 2025 was 9 August 2025, reaching 44.9 °C.
What is the coldest day in Ar Rastan?
The coldest day measured in Ar Rastan between 1940 and 2025 was 9 February 1949, at -14.0 °C.
Does it snow in Ar Rastan?
Yes. Ar Rastan gets on average 2.3 cm of snow per year and has around 7 frost days.
Has the climate of Ar Rastan warmed?
Yes: Ar Rastan warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ar Rastan?
The wettest day measured in Ar Rastan between 1940 and 2025 was 8 January 1979, with 40 mm of rain in 24 hours.
What was the windiest day in Ar Rastan?
The windiest day measured in Ar Rastan between 1940 and 2025 was 14 April 1941, with winds reaching 52.2 km/h.
What is the warmest month in Ar Rastan?
The warmest month in Ar Rastan is August (27.3 °C on average); the coldest is January (7.9 °C).
How much does it rain in Ar Rastan?
Ar Rastan receives on average 222 mm of precipitation per year, spread over about 51 rainy days.
Is it sunny in Ar Rastan?
Ar Rastan gets on average 11.0 hours of sunshine per day, roughly 4,015 hours per year over 1940-2025.
What is the biggest single-day snowfall in Ar Rastan?
The heaviest 24-hour snowfall measured in Ar Rastan between 1940 and 2025 was 18 December 1971, with 11.0 cm.
Are there tropical nights in Ar Rastan?
Yes: Ar Rastan has on average 70 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ar Rastan?
In Ar Rastan, between 1940 and 2025, the highest apparent temperature reached 46.7 °C on 9 August 2025, and the lowest was -19.5 °C on 9 February 1949.
Compare Ar Rastan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ar Rastan