Khulayş climate — normals and trends
Khulayş (Saudi Arabia) has a hot desert climate (BWh) under the Köppen-Geiger classification. Its mean annual temperature is 28.5 °C and it receives 101 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 (33.1 °C on average) and the coldest is January (22.6 °C). Rainfall peaks in November.
Khulayş averages 0 frost days, 298 hot days (≥ 30 °C) and 14 rainy days per year.
Khulayş has warmed by +3.5 °C between 1940 and 2025, or +0.41 °C per decade. This trend is statistically significant.
The hottest day of the period reached 51.7 °C (on 20 August 2015) and the coldest 7.1 °C (on 3 February 1968).
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
KhulayşMecca Region
- coords
- 22.16°, 39.32°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
28.5°C
Average daily high
34.9°C
Average daily low
22.8°C
Annual rainfall
101mm
Sunshine / day
11.5h
Mean relative humidity
55%
Average peak wind
23.9km/h
Seasonal range
10.5°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
298 d/yr
Rainy days (≥ 1 mm)
14 d/yr
Annual snowfall
0.0 cm
Average feels-like high
35.6 °C
Average feels-like low
24.5 °C
Average peak gust
40.6 km/h
Tropical nights (≥ 20 °C)
274 d/yr
Solar radiation
22.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+3.5 °C
since 1940
+0.4 °C per decade · r² = 0.85 · 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
51.7 °C
20 August 2015
Coldest day
7.1 °C
3 February 1968
Wettest day
99 mm
12 May 1950
Windiest day
56.4 km/h
8 March 1988
Strongest gust
89.6 km/h
28 March 1997
Hottest feels-like
52.5 °C
24 August 2017
Coldest feels-like
3.1 °C
3 February 1968
Sunniest day
13.0 h
27 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 | 30.6 °C | +2.4 °C | 43 mm | +24 mm |
| Feb | 29.8 °C | +0.3 °C | 0 mm | -5 mm |
| Mar | 33.6 °C | +1.7 °C | 14 mm | +6 mm |
| Apr | 36.5 °C | +1.4 °C | 2 mm | -9 mm |
| May | 39.1 °C | +1.2 °C | 0 mm | -5 mm |
| Jun | 40.6 °C | +1.4 °C | 0 mm | -0 mm |
| Jul | 42.2 °C | +2.9 °C | 0 mm | -1 mm |
| Aug | 40.7 °C | +1.5 °C | 0 mm | -1 mm |
| Sep | 40.1 °C | +1.5 °C | 2 mm | +2 mm |
| Oct | 39.1 °C | +2.1 °C | 0 mm | -4 mm |
| Nov | 35.8 °C | +2.9 °C | 8 mm | -16 mm |
| Dec | 30.1 °C | +0.5 °C | 9 mm | -14 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 Khulayş?
Khulayş has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 28.5 °C and it receives 101 mm of precipitation per year.
What is the hottest day ever recorded in Khulayş?
The hottest day measured in Khulayş between 1940 and 2025 was 20 August 2015, reaching 51.7 °C.
What is the coldest day in Khulayş?
The coldest day measured in Khulayş between 1940 and 2025 was 3 February 1968, at 7.1 °C.
Does it snow in Khulayş?
Almost never: Khulayş sees virtually no snow, with about 0 frost days per year.
Has the climate of Khulayş warmed?
Yes: Khulayş warmed by +3.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Khulayş?
The wettest day measured in Khulayş between 1940 and 2025 was 12 May 1950, with 99 mm of rain in 24 hours.
What was the windiest day in Khulayş?
The windiest day measured in Khulayş between 1940 and 2025 was 8 March 1988, with winds reaching 56.4 km/h.
What is the warmest month in Khulayş?
The warmest month in Khulayş is August (33.1 °C on average); the coldest is January (22.6 °C).
How much does it rain in Khulayş?
Khulayş receives on average 101 mm of precipitation per year, spread over about 14 rainy days.
Is it sunny in Khulayş?
Khulayş gets on average 11.5 hours of sunshine per day, roughly 4,198 hours per year over 1940-2025.
Are there tropical nights in Khulayş?
Yes: Khulayş has on average 274 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Khulayş?
In Khulayş, between 1940 and 2025, the highest apparent temperature reached 52.5 °C on 24 August 2017, and the lowest was 3.1 °C on 3 February 1968.
Compare Khulayş with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Khulayş