Rustaq climate — normals and trends
Rustaq (Oman) has a hot desert climate (BWh) under the Köppen-Geiger classification. Its mean annual temperature is 27.4 °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 June (34.8 °C on average) and the coldest is January (18.2 °C). Rainfall peaks in March.
Rustaq averages 0 frost days, 230 hot days (≥ 30 °C) and 17 rainy days per year.
Rustaq has warmed by +2.4 °C between 1940 and 2025, or +0.28 °C per decade. This trend is statistically significant.
The hottest day of the period reached 47.6 °C (on 31 May 2009) and the coldest 3.9 °C (on 4 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
RustaqAl Batinah South
- coords
- 23.39°, 57.42°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
27.4°C
Average daily high
32.7°C
Average daily low
22.4°C
Annual rainfall
101mm
Sunshine / day
11.3h
Mean relative humidity
44%
Average peak wind
16.5km/h
Seasonal range
16.6°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
230 d/yr
Rainy days (≥ 1 mm)
17 d/yr
Annual snowfall
0.0 cm
Average feels-like high
32.7 °C
Average feels-like low
21.9 °C
Average peak gust
38.0 km/h
Tropical nights (≥ 20 °C)
226 d/yr
Solar radiation
22.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.4 °C
since 1940
+0.3 °C per decade · r² = 0.69 · 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
47.6 °C
31 May 2009
Coldest day
3.9 °C
4 January 1949
Wettest day
78 mm
22 July 1995
Windiest day
29.5 km/h
19 April 2013
Strongest gust
74.5 km/h
4 June 2010
Hottest feels-like
47.1 °C
9 June 2018
Coldest feels-like
0.5 °C
4 January 1949
Sunniest day
12.6 h
22 June 1957
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 | 23.4 °C | +0.3 °C | 1 mm | -12 mm |
| Feb | 26.8 °C | +1.7 °C | 2 mm | -13 mm |
| Mar | 30.3 °C | +1.1 °C | 0 mm | -17 mm |
| Apr | 37.8 °C | +3.8 °C | 0 mm | -14 mm |
| May | 40.5 °C | +1.8 °C | 1 mm | -3 mm |
| Jun | 40.8 °C | +0.5 °C | 1 mm | -1 mm |
| Jul | 39.0 °C | -0.6 °C | 1 mm | -6 mm |
| Aug | 38.0 °C | -0.7 °C | 1 mm | -1 mm |
| Sep | 36.4 °C | -0.5 °C | 1 mm | -1 mm |
| Oct | 34.2 °C | +0.5 °C | 0 mm | -3 mm |
| Nov | 28.7 °C | +0.4 °C | 0 mm | -7 mm |
| Dec | 25.7 °C | +1.4 °C | 8 mm | -9 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 Rustaq?
Rustaq has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 27.4 °C and it receives 101 mm of precipitation per year.
What is the hottest day ever recorded in Rustaq?
The hottest day measured in Rustaq between 1940 and 2025 was 31 May 2009, reaching 47.6 °C.
What is the coldest day in Rustaq?
The coldest day measured in Rustaq between 1940 and 2025 was 4 January 1949, at 3.9 °C.
Does it snow in Rustaq?
Almost never: Rustaq sees virtually no snow, with about 0 frost days per year.
Has the climate of Rustaq warmed?
Yes: Rustaq warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Rustaq?
The wettest day measured in Rustaq between 1940 and 2025 was 22 July 1995, with 78 mm of rain in 24 hours.
What was the windiest day in Rustaq?
The windiest day measured in Rustaq between 1940 and 2025 was 19 April 2013, with winds reaching 29.5 km/h.
What is the warmest month in Rustaq?
The warmest month in Rustaq is June (34.8 °C on average); the coldest is January (18.2 °C).
How much does it rain in Rustaq?
Rustaq receives on average 101 mm of precipitation per year, spread over about 17 rainy days.
Is it sunny in Rustaq?
Rustaq gets on average 11.3 hours of sunshine per day, roughly 4,125 hours per year over 1940-2025.
Are there tropical nights in Rustaq?
Yes: Rustaq has on average 226 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Rustaq?
In Rustaq, between 1940 and 2025, the highest apparent temperature reached 47.1 °C on 9 June 2018, and the lowest was 0.5 °C on 4 January 1949.
Compare Rustaq with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Rustaq