Fasa climate — normals and trends
Fasa (Iran) has a hot semi-arid climate (BSh) under the Köppen-Geiger classification. Its mean annual temperature is 18.2 °C and it receives 203 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 July (29.8 °C on average) and the coldest is January (5.6 °C). Rainfall peaks in January.
Fasa averages 23 frost days, 128 hot days (≥ 30 °C) and 28 rainy days per year.
Fasa has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.
The number of frost days there went from about 28 to 18 per year over the period.
The hottest day of the period reached 41.4 °C (on 28 July 2024) and the coldest -15.1 °C (on 11 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
FasaFars
- coords
- 28.94°, 53.65°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
18.2°C
Average daily high
23.7°C
Average daily low
12.0°C
Annual rainfall
203mm
Sunshine / day
11.1h
Mean relative humidity
36%
Average peak wind
11.2km/h
Seasonal range
24.2°C
Frost days (< 0 °C)
23 d/yr
Hot days (≥ 30 °C)
128 d/yr
Rainy days (≥ 1 mm)
28 d/yr
Annual snowfall
8.0 cm
Average feels-like high
21.6 °C
Average feels-like low
9.2 °C
Average peak gust
34.6 km/h
Tropical nights (≥ 20 °C)
84 d/yr
Solar radiation
22.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.37 · 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
41.4 °C
28 July 2024
Coldest day
-15.1 °C
11 January 1949
Wettest day
79 mm
8 December 1955
Windiest day
30.7 km/h
31 March 1956
Strongest gust
100.4 km/h
31 March 1956
Hottest feels-like
41.7 °C
28 July 2024
Coldest feels-like
-19.9 °C
6 January 1973
Snowiest day
21.1 cm
11 January 1996
Sunniest day
13.0 h
1 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 | 12.3 °C | +1.7 °C | 15 mm | -35 mm |
| Feb | 12.7 °C | -0.1 °C | 34 mm | -4 mm |
| Mar | 18.2 °C | +1.2 °C | 33 mm | -6 mm |
| Apr | 28.5 °C | +5.8 °C | 2 mm | -13 mm |
| May | 33.7 °C | +4.5 °C | 0 mm | -4 mm |
| Jun | 36.0 °C | +1.8 °C | 0 mm | -0 mm |
| Jul | 37.2 °C | +1.8 °C | 2 mm | -1 mm |
| Aug | 36.4 °C | +2.1 °C | 0 mm | -2 mm |
| Sep | 34.0 °C | +2.8 °C | 0 mm | 0 mm |
| Oct | 27.9 °C | +2.4 °C | 0 mm | -1 mm |
| Nov | 21.5 °C | +3.2 °C | 0 mm | -12 mm |
| Dec | 13.3 °C | +0.4 °C | 135 mm | +96 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 Fasa?
Fasa has a hot semi-arid climate (Köppen BSh). Over 1940-2025, the average annual temperature is 18.2 °C and it receives 203 mm of precipitation per year.
What is the hottest day ever recorded in Fasa?
The hottest day measured in Fasa between 1940 and 2025 was 28 July 2024, reaching 41.4 °C.
What is the coldest day in Fasa?
The coldest day measured in Fasa between 1940 and 2025 was 11 January 1949, at -15.1 °C.
Does it snow in Fasa?
Yes. Fasa gets on average 8.0 cm of snow per year and has around 23 frost days.
Has the climate of Fasa warmed?
Yes: Fasa warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Fasa?
The wettest day measured in Fasa between 1940 and 2025 was 8 December 1955, with 79 mm of rain in 24 hours.
What was the windiest day in Fasa?
The windiest day measured in Fasa between 1940 and 2025 was 31 March 1956, with winds reaching 30.7 km/h.
What is the warmest month in Fasa?
The warmest month in Fasa is July (29.8 °C on average); the coldest is January (5.6 °C).
How much does it rain in Fasa?
Fasa receives on average 203 mm of precipitation per year, spread over about 28 rainy days.
Is it sunny in Fasa?
Fasa 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 Fasa?
The heaviest 24-hour snowfall measured in Fasa between 1940 and 2025 was 11 January 1996, with 21.1 cm.
Are there tropical nights in Fasa?
Yes: Fasa has on average 84 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Fasa?
In Fasa, between 1940 and 2025, the highest apparent temperature reached 41.7 °C on 28 July 2024, and the lowest was -19.9 °C on 6 January 1973.
Compare Fasa with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Fasa