Nizwa climate — normals and trends
Nizwa (Oman) has a hot desert climate (BWh) under the Köppen-Geiger classification. Its mean annual temperature is 26.2 °C and it receives 118 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 (33.6 °C on average) and the coldest is January (17.2 °C). Rainfall peaks in July.
Nizwa averages 0 frost days, 214 hot days (≥ 30 °C) and 23 rainy days per year.
Nizwa has warmed by +2.3 °C between 1940 and 2025, or +0.27 °C per decade. This trend is statistically significant.
The hottest day of the period reached 45.6 °C (on 30 May 2017) and the coldest 3.5 °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
NizwaAd Dakhiliyah
- coords
- 22.93°, 57.53°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.2°C
Average daily high
31.3°C
Average daily low
21.0°C
Annual rainfall
118mm
Sunshine / day
11.3h
Mean relative humidity
35%
Average peak wind
10.9km/h
Seasonal range
16.4°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
214 d/yr
Rainy days (≥ 1 mm)
23 d/yr
Annual snowfall
0.0 cm
Average feels-like high
30.9 °C
Average feels-like low
20.2 °C
Average peak gust
34.0 km/h
Tropical nights (≥ 20 °C)
208 d/yr
Solar radiation
22.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.3 °C
since 1940
+0.3 °C per decade · r² = 0.69 · 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
45.6 °C
30 May 2017
Coldest day
3.5 °C
4 January 1949
Wettest day
72 mm
11 March 1949
Windiest day
25.8 km/h
29 March 1955
Strongest gust
99.0 km/h
4 June 2010
Hottest feels-like
45.9 °C
26 June 2005
Coldest feels-like
-0.1 °C
4 January 1949
Sunniest day
12.5 h
24 June 2010
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 | 23.1 °C | +0.8 °C | 0 mm | -7 mm |
| Feb | 26.8 °C | +2.3 °C | 0 mm | -11 mm |
| Mar | 30.2 °C | +2.1 °C | 1 mm | -15 mm |
| Apr | 36.1 °C | +4.0 °C | 0 mm | -15 mm |
| May | 39.0 °C | +2.5 °C | 1 mm | -6 mm |
| Jun | 40.4 °C | +1.4 °C | 1 mm | -4 mm |
| Jul | 39.9 °C | +1.8 °C | 12 mm | -12 mm |
| Aug | 36.9 °C | -0.3 °C | 29 mm | +16 mm |
| Sep | 36.5 °C | +0.9 °C | 3 mm | +0 mm |
| Oct | 32.9 °C | +0.9 °C | 1 mm | -3 mm |
| Nov | 27.9 °C | +0.8 °C | 0 mm | -7 mm |
| Dec | 24.2 °C | +0.6 °C | 1 mm | -5 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 Nizwa?
Nizwa has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 26.2 °C and it receives 118 mm of precipitation per year.
What is the hottest day ever recorded in Nizwa?
The hottest day measured in Nizwa between 1940 and 2025 was 30 May 2017, reaching 45.6 °C.
What is the coldest day in Nizwa?
The coldest day measured in Nizwa between 1940 and 2025 was 4 January 1949, at 3.5 °C.
Does it snow in Nizwa?
Almost never: Nizwa sees virtually no snow, with about 0 frost days per year.
Has the climate of Nizwa warmed?
Yes: Nizwa warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Nizwa?
The wettest day measured in Nizwa between 1940 and 2025 was 11 March 1949, with 72 mm of rain in 24 hours.
What was the windiest day in Nizwa?
The windiest day measured in Nizwa between 1940 and 2025 was 29 March 1955, with winds reaching 25.8 km/h.
What is the warmest month in Nizwa?
The warmest month in Nizwa is June (33.6 °C on average); the coldest is January (17.2 °C).
How much does it rain in Nizwa?
Nizwa receives on average 118 mm of precipitation per year, spread over about 23 rainy days.
Is it sunny in Nizwa?
Nizwa gets on average 11.3 hours of sunshine per day, roughly 4,125 hours per year over 1940-2025.
Are there tropical nights in Nizwa?
Yes: Nizwa has on average 208 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Nizwa?
In Nizwa, between 1940 and 2025, the highest apparent temperature reached 45.9 °C on 26 June 2005, and the lowest was -0.1 °C on 4 January 1949.
Compare Nizwa with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Nizwa