Gorgan climate — normals and trends
Gorgan (Iran) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 11.0 °C and it receives 1,121 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 (21.1 °C on average) and the coldest is January (0.1 °C). Rainfall peaks in May.
Gorgan averages 87 frost days, 4 hot days (≥ 30 °C) and 168 rainy days per year.
Gorgan has warmed by +2.8 °C between 1940 and 2025, or +0.33 °C per decade. This trend is statistically significant.
The number of frost days there went from about 106 to 68 per year over the period.
The hottest day of the period reached 34.1 °C (on 5 July 2021) and the coldest -19.6 °C (on 21 December 1948).
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
GorganGolestan
- coords
- 36.84°, 54.44°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.0°C
Average daily high
15.6°C
Average daily low
6.9°C
Annual rainfall
1,121mm
Sunshine / day
10.2h
Mean relative humidity
74%
Average peak wind
7.8km/h
Seasonal range
21.0°C
Frost days (< 0 °C)
87 d/yr
Hot days (≥ 30 °C)
4 d/yr
Rainy days (≥ 1 mm)
168 d/yr
Annual snowfall
140.6 cm
Average feels-like high
15.3 °C
Average feels-like low
5.2 °C
Average peak gust
28.9 km/h
Tropical nights (≥ 20 °C)
6 d/yr
Solar radiation
16.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.8 °C
since 1940
+0.3 °C per decade · r² = 0.54 · 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
34.1 °C
5 July 2021
Coldest day
-19.6 °C
21 December 1948
Wettest day
81 mm
25 September 2013
Windiest day
22.5 km/h
18 March 2019
Strongest gust
86.0 km/h
5 March 2012
Hottest feels-like
38.0 °C
10 July 2010
Coldest feels-like
-24.5 °C
21 December 1948
Snowiest day
29.3 cm
18 March 2019
Sunniest day
13.6 h
20 June 1941
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 | 6.8 °C | +2.2 °C | 36 mm | -23 mm |
| Feb | 3.9 °C | -1.4 °C | 68 mm | -5 mm |
| Mar | 11.9 °C | +3.1 °C | 88 mm | -26 mm |
| Apr | 18.9 °C | +4.1 °C | 151 mm | +1 mm |
| May | 22.5 °C | +3.1 °C | 112 mm | -82 mm |
| Jun | 23.5 °C | +0.4 °C | 52 mm | -48 mm |
| Jul | 26.8 °C | +1.4 °C | 23 mm | -31 mm |
| Aug | 28.0 °C | +2.5 °C | 63 mm | +1 mm |
| Sep | 23.8 °C | +1.1 °C | 85 mm | -5 mm |
| Oct | 21.1 °C | +3.2 °C | 52 mm | -46 mm |
| Nov | 16.5 °C | +4.4 °C | 16 mm | -55 mm |
| Dec | 9.0 °C | +2.0 °C | 54 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 Gorgan?
Gorgan has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 11.0 °C and it receives 1,121 mm of precipitation per year.
What is the hottest day ever recorded in Gorgan?
The hottest day measured in Gorgan between 1940 and 2025 was 5 July 2021, reaching 34.1 °C.
What is the coldest day in Gorgan?
The coldest day measured in Gorgan between 1940 and 2025 was 21 December 1948, at -19.6 °C.
Does it snow in Gorgan?
Yes. Gorgan gets on average 140.6 cm of snow per year and has around 87 frost days.
Has the climate of Gorgan warmed?
Yes: Gorgan warmed by +2.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Gorgan?
The wettest day measured in Gorgan between 1940 and 2025 was 25 September 2013, with 81 mm of rain in 24 hours.
What was the windiest day in Gorgan?
The windiest day measured in Gorgan between 1940 and 2025 was 18 March 2019, with winds reaching 22.5 km/h.
What is the warmest month in Gorgan?
The warmest month in Gorgan is July (21.1 °C on average); the coldest is January (0.1 °C).
How much does it rain in Gorgan?
Gorgan receives on average 1,121 mm of precipitation per year, spread over about 168 rainy days.
Is it sunny in Gorgan?
Gorgan gets on average 10.2 hours of sunshine per day, roughly 3,723 hours per year over 1940-2025.
What is the biggest single-day snowfall in Gorgan?
The heaviest 24-hour snowfall measured in Gorgan between 1940 and 2025 was 18 March 2019, with 29.3 cm.
Are there tropical nights in Gorgan?
Yes: Gorgan has on average 6 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Gorgan?
In Gorgan, between 1940 and 2025, the highest apparent temperature reached 38.0 °C on 10 July 2010, and the lowest was -24.5 °C on 21 December 1948.
Compare Gorgan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Gorgan