Az Zulfī climate — normals and trends
Az Zulfī (Saudi Arabia) has a hot desert climate (BWh) under the Köppen-Geiger classification. Its mean annual temperature is 24.4 °C and it receives 94 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 (34.2 °C on average) and the coldest is January (12.2 °C). Rainfall peaks in November.
Az Zulfī averages 2 frost days, 209 hot days (≥ 30 °C) and 17 rainy days per year.
Az Zulfī has warmed by +4.0 °C between 1940 and 2025, or +0.47 °C per decade. This trend is statistically significant.
The number of frost days there went from about 4 to 0 per year over the period.
The hottest day of the period reached 47.3 °C (on 12 July 2021) and the coldest -6.8 °C (on 1 January 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
Az ZulfīRiyadh Region
- coords
- 26.30°, 44.82°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
24.4°C
Average daily high
31.1°C
Average daily low
17.6°C
Annual rainfall
94mm
Sunshine / day
11.1h
Mean relative humidity
30%
Average peak wind
21.3km/h
Seasonal range
22.0°C
Frost days (< 0 °C)
2 d/yr
Hot days (≥ 30 °C)
209 d/yr
Rainy days (≥ 1 mm)
17 d/yr
Annual snowfall
0.0 cm
Average feels-like high
28.6 °C
Average feels-like low
13.9 °C
Average peak gust
35.0 km/h
Tropical nights (≥ 20 °C)
166 d/yr
Solar radiation
22.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+4.0 °C
since 1940
+0.5 °C per decade · r² = 0.79 · 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
47.3 °C
12 July 2021
Coldest day
-6.8 °C
1 January 1949
Wettest day
69 mm
8 November 1997
Windiest day
49.6 km/h
22 April 1992
Strongest gust
82.8 km/h
2 April 2014
Hottest feels-like
48.0 °C
4 August 2022
Coldest feels-like
-12.2 °C
20 January 1964
Snowiest day
0.1 cm
3 February 1967
Sunniest day
12.8 h
30 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 | 17.9 °C | -0.3 °C | 10 mm | -7 mm |
| Feb | 19.2 °C | -2.0 °C | 29 mm | +21 mm |
| Mar | 25.5 °C | -0.3 °C | 43 mm | +29 mm |
| Apr | 35.4 °C | +4.2 °C | 3 mm | -11 mm |
| May | 39.7 °C | +2.6 °C | 2 mm | -1 mm |
| Jun | 42.1 °C | +1.9 °C | 0 mm | 0 mm |
| Jul | 42.5 °C | +1.3 °C | 0 mm | 0 mm |
| Aug | 42.7 °C | +1.4 °C | 0 mm | 0 mm |
| Sep | 40.7 °C | +1.8 °C | 0 mm | 0 mm |
| Oct | 34.5 °C | +1.0 °C | 0 mm | -2 mm |
| Nov | 27.6 °C | +2.2 °C | 1 mm | -19 mm |
| Dec | 20.2 °C | +0.6 °C | 48 mm | +32 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 Az Zulfī?
Az Zulfī has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 24.4 °C and it receives 94 mm of precipitation per year.
What is the hottest day ever recorded in Az Zulfī?
The hottest day measured in Az Zulfī between 1940 and 2025 was 12 July 2021, reaching 47.3 °C.
What is the coldest day in Az Zulfī?
The coldest day measured in Az Zulfī between 1940 and 2025 was 1 January 1949, at -6.8 °C.
Does it snow in Az Zulfī?
Almost never: Az Zulfī sees virtually no snow, with about 2 frost days per year.
Has the climate of Az Zulfī warmed?
Yes: Az Zulfī warmed by +4.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Az Zulfī?
The wettest day measured in Az Zulfī between 1940 and 2025 was 8 November 1997, with 69 mm of rain in 24 hours.
What was the windiest day in Az Zulfī?
The windiest day measured in Az Zulfī between 1940 and 2025 was 22 April 1992, with winds reaching 49.6 km/h.
What is the warmest month in Az Zulfī?
The warmest month in Az Zulfī is August (34.2 °C on average); the coldest is January (12.2 °C).
How much does it rain in Az Zulfī?
Az Zulfī receives on average 94 mm of precipitation per year, spread over about 17 rainy days.
Is it sunny in Az Zulfī?
Az Zulfī 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 Az Zulfī?
The heaviest 24-hour snowfall measured in Az Zulfī between 1940 and 2025 was 3 February 1967, with 0.1 cm.
Are there tropical nights in Az Zulfī?
Yes: Az Zulfī has on average 166 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Az Zulfī?
In Az Zulfī, between 1940 and 2025, the highest apparent temperature reached 48.0 °C on 4 August 2022, and the lowest was -12.2 °C on 20 January 1964.
Compare Az Zulfī with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Az Zulfī