Riffa climate — normals and trends
Riffa (Bahrain) has a hot desert climate (BWh) under the Köppen-Geiger classification. Its mean annual temperature is 25.9 °C and it receives 57 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 (33.7 °C on average) and the coldest is January (17.1 °C). Rainfall peaks in January.
Riffa averages 0 frost days, 155 hot days (≥ 30 °C) and 11 rainy days per year.
Riffa has warmed by +1.1 °C between 1940 and 2025, or +0.13 °C per decade. This trend is statistically significant.
The hottest day of the period reached 38.7 °C (on 5 August 2021) and the coldest 6.1 °C (on 20 January 1964).
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
RiffaSouthern Governorate
- coords
- 26.13°, 50.55°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.9°C
Average daily high
27.1°C
Average daily low
24.9°C
Annual rainfall
57mm
Sunshine / day
11.3h
Mean relative humidity
68%
Average peak wind
24.8km/h
Seasonal range
16.6°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
155 d/yr
Rainy days (≥ 1 mm)
11 d/yr
Annual snowfall
0.0 cm
Average feels-like high
29.8 °C
Average feels-like low
25.6 °C
Average peak gust
33.1 km/h
Tropical nights (≥ 20 °C)
262 d/yr
Solar radiation
21.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.1 °C
since 1940
+0.1 °C per decade · r² = 0.30 · 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
38.7 °C
5 August 2021
Coldest day
6.1 °C
20 January 1964
Wettest day
55 mm
16 December 1964
Windiest day
62.2 km/h
19 January 1964
Strongest gust
82.4 km/h
19 January 1964
Hottest feels-like
48.5 °C
17 August 1998
Coldest feels-like
-4.3 °C
20 January 1964
Sunniest day
13.0 h
6 May 1940
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 18.4 °C | +0.2 °C | 2 mm | -11 mm |
| Feb | 18.5 °C | -0.1 °C | 7 mm | -3 mm |
| Mar | 21.0 °C | -0.3 °C | 7 mm | -2 mm |
| Apr | 27.0 °C | +1.8 °C | 0 mm | -5 mm |
| May | 31.4 °C | +1.6 °C | 0 mm | -1 mm |
| Jun | 33.6 °C | +0.9 °C | 0 mm | 0 mm |
| Jul | 35.1 °C | +0.9 °C | 0 mm | 0 mm |
| Aug | 35.9 °C | +1.1 °C | 0 mm | 0 mm |
| Sep | 34.3 °C | +0.9 °C | 0 mm | 0 mm |
| Oct | 30.1 °C | -0.2 °C | 0 mm | -1 mm |
| Nov | 25.9 °C | +0.4 °C | 0 mm | -7 mm |
| Dec | 22.0 °C | +1.4 °C | 26 mm | +13 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 Riffa?
Riffa has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 25.9 °C and it receives 57 mm of precipitation per year.
What is the hottest day ever recorded in Riffa?
The hottest day measured in Riffa between 1940 and 2025 was 5 August 2021, reaching 38.7 °C.
What is the coldest day in Riffa?
The coldest day measured in Riffa between 1940 and 2025 was 20 January 1964, at 6.1 °C.
Does it snow in Riffa?
Almost never: Riffa sees virtually no snow, with about 0 frost days per year.
Has the climate of Riffa warmed?
Yes: Riffa warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Riffa?
The wettest day measured in Riffa between 1940 and 2025 was 16 December 1964, with 55 mm of rain in 24 hours.
What was the windiest day in Riffa?
The windiest day measured in Riffa between 1940 and 2025 was 19 January 1964, with winds reaching 62.2 km/h.
What is the warmest month in Riffa?
The warmest month in Riffa is August (33.7 °C on average); the coldest is January (17.1 °C).
How much does it rain in Riffa?
Riffa receives on average 57 mm of precipitation per year, spread over about 11 rainy days.
Is it sunny in Riffa?
Riffa gets on average 11.3 hours of sunshine per day, roughly 4,125 hours per year over 1940-2025.
Are there tropical nights in Riffa?
Yes: Riffa has on average 262 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Riffa?
In Riffa, between 1940 and 2025, the highest apparent temperature reached 48.5 °C on 17 August 1998, and the lowest was -4.3 °C on 20 January 1964.
Compare Riffa with another city
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Nearby cities
The climate around Riffa