Reẕvānshahr climate — normals and trends
Reẕvānshahr (Iran) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 15.8 °C and it receives 1,477 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 (25.1 °C on average) and the coldest is February (7.0 °C). Rainfall peaks in October.
Reẕvānshahr averages 2 frost days, 4 hot days (≥ 30 °C) and 150 rainy days per year.
Reẕvānshahr has warmed by +2.0 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.
The number of frost days there went from about 3 to 1 per year over the period.
The hottest day of the period reached 33.5 °C (on 9 August 2017) and the coldest -4.5 °C (on 13 January 1940).
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
ReẕvānshahrGilan Province
- coords
- 37.55°, 49.14°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.8°C
Average daily high
17.8°C
Average daily low
14.0°C
Annual rainfall
1,477mm
Sunshine / day
8.9h
Mean relative humidity
79%
Average peak wind
14.0km/h
Seasonal range
18.1°C
Frost days (< 0 °C)
2 d/yr
Hot days (≥ 30 °C)
4 d/yr
Rainy days (≥ 1 mm)
150 d/yr
Annual snowfall
63.4 cm
Average feels-like high
18.2 °C
Average feels-like low
13.5 °C
Average peak gust
23.9 km/h
Tropical nights (≥ 20 °C)
98 d/yr
Solar radiation
14.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.50 · 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
33.5 °C
9 August 2017
Coldest day
-4.5 °C
13 January 1940
Wettest day
118 mm
4 September 2021
Windiest day
47.8 km/h
20 November 1958
Strongest gust
82.1 km/h
3 November 2014
Hottest feels-like
40.2 °C
1 August 2011
Coldest feels-like
-10.1 °C
23 January 1964
Snowiest day
22.6 cm
28 February 1940
Sunniest day
14.0 h
26 June 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 | 11.6 °C | +2.1 °C | 103 mm | -26 mm |
| Feb | 8.5 °C | -0.6 °C | 231 mm | +115 mm |
| Mar | 13.2 °C | +2.4 °C | 117 mm | +5 mm |
| Apr | 17.1 °C | +2.1 °C | 93 mm | +14 mm |
| May | 20.6 °C | +0.9 °C | 31 mm | -35 mm |
| Jun | 24.5 °C | +0.3 °C | 26 mm | -27 mm |
| Jul | 28.0 °C | +1.3 °C | 14 mm | -32 mm |
| Aug | 28.5 °C | +1.7 °C | 32 mm | -44 mm |
| Sep | 23.8 °C | +0.2 °C | 286 mm | +112 mm |
| Oct | 21.2 °C | +1.4 °C | 159 mm | -87 mm |
| Nov | 18.7 °C | +2.8 °C | 33 mm | -189 mm |
| Dec | 13.9 °C | +2.0 °C | 247 mm | +90 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 Reẕvānshahr?
Reẕvānshahr has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 15.8 °C and it receives 1,477 mm of precipitation per year.
What is the hottest day ever recorded in Reẕvānshahr?
The hottest day measured in Reẕvānshahr between 1940 and 2025 was 9 August 2017, reaching 33.5 °C.
What is the coldest day in Reẕvānshahr?
The coldest day measured in Reẕvānshahr between 1940 and 2025 was 13 January 1940, at -4.5 °C.
Does it snow in Reẕvānshahr?
Yes. Reẕvānshahr gets on average 63.4 cm of snow per year and has around 2 frost days.
Has the climate of Reẕvānshahr warmed?
Yes: Reẕvānshahr warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Reẕvānshahr?
The wettest day measured in Reẕvānshahr between 1940 and 2025 was 4 September 2021, with 118 mm of rain in 24 hours.
What was the windiest day in Reẕvānshahr?
The windiest day measured in Reẕvānshahr between 1940 and 2025 was 20 November 1958, with winds reaching 47.8 km/h.
What is the warmest month in Reẕvānshahr?
The warmest month in Reẕvānshahr is August (25.1 °C on average); the coldest is February (7.0 °C).
How much does it rain in Reẕvānshahr?
Reẕvānshahr receives on average 1,477 mm of precipitation per year, spread over about 150 rainy days.
Is it sunny in Reẕvānshahr?
Reẕvānshahr gets on average 8.9 hours of sunshine per day, roughly 3,249 hours per year over 1940-2025.
What is the biggest single-day snowfall in Reẕvānshahr?
The heaviest 24-hour snowfall measured in Reẕvānshahr between 1940 and 2025 was 28 February 1940, with 22.6 cm.
Are there tropical nights in Reẕvānshahr?
Yes: Reẕvānshahr has on average 98 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Reẕvānshahr?
In Reẕvānshahr, between 1940 and 2025, the highest apparent temperature reached 40.2 °C on 1 August 2011, and the lowest was -10.1 °C on 23 January 1964.
Compare Reẕvānshahr with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Reẕvānshahr