Tonekābon climate — normals and trends
Tonekābon (Iran) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.8 °C and it receives 1,355 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 (19.9 °C on average) and the coldest is January (1.2 °C). Rainfall peaks in September.
Tonekābon averages 62 frost days, 0 hot days (≥ 30 °C) and 196 rainy days per year.
Tonekābon has warmed by +2.1 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.
The number of frost days there went from about 77 to 47 per year over the period.
The hottest day of the period reached 30.2 °C (on 7 July 1991) and the coldest -13.1 °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
TonekābonMazandaran
- coords
- 36.82°, 50.87°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.8°C
Average daily high
13.7°C
Average daily low
8.0°C
Annual rainfall
1,355mm
Sunshine / day
10.0h
Mean relative humidity
79%
Average peak wind
8.4km/h
Seasonal range
18.7°C
Frost days (< 0 °C)
62 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
196 d/yr
Annual snowfall
187.5 cm
Average feels-like high
13.7 °C
Average feels-like low
6.5 °C
Average peak gust
30.3 km/h
Tropical nights (≥ 20 °C)
5 d/yr
Solar radiation
15.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.1 °C
since 1940
+0.2 °C per decade · r² = 0.49 · 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
30.2 °C
7 July 1991
Coldest day
-13.1 °C
20 January 1964
Wettest day
142 mm
20 September 1959
Windiest day
26.7 km/h
16 October 1981
Strongest gust
91.8 km/h
21 December 2021
Hottest feels-like
35.6 °C
3 August 2011
Coldest feels-like
-17.6 °C
20 January 1964
Snowiest day
22.3 cm
26 October 1987
Sunniest day
13.6 h
26 June 2021
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 | 6.3 °C | +2.2 °C | 61 mm | -16 mm |
| Feb | 2.4 °C | -2.0 °C | 119 mm | +43 mm |
| Mar | 10.3 °C | +3.2 °C | 92 mm | +7 mm |
| Apr | 15.8 °C | +3.3 °C | 92 mm | +15 mm |
| May | 19.0 °C | +1.9 °C | 91 mm | -6 mm |
| Jun | 20.4 °C | -0.1 °C | 86 mm | -28 mm |
| Jul | 23.5 °C | +1.0 °C | 74 mm | -34 mm |
| Aug | 24.6 °C | +2.0 °C | 104 mm | -39 mm |
| Sep | 20.0 °C | 0.0 °C | 303 mm | +109 mm |
| Oct | 18.3 °C | +2.2 °C | 130 mm | -38 mm |
| Nov | 15.2 °C | +4.2 °C | 25 mm | -102 mm |
| Dec | 7.9 °C | +1.5 °C | 147 mm | +56 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 Tonekābon?
Tonekābon has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 10.8 °C and it receives 1,355 mm of precipitation per year.
What is the hottest day ever recorded in Tonekābon?
The hottest day measured in Tonekābon between 1940 and 2025 was 7 July 1991, reaching 30.2 °C.
What is the coldest day in Tonekābon?
The coldest day measured in Tonekābon between 1940 and 2025 was 20 January 1964, at -13.1 °C.
Does it snow in Tonekābon?
Yes. Tonekābon gets on average 187.5 cm of snow per year and has around 62 frost days.
Has the climate of Tonekābon warmed?
Yes: Tonekābon warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Tonekābon?
The wettest day measured in Tonekābon between 1940 and 2025 was 20 September 1959, with 142 mm of rain in 24 hours.
What was the windiest day in Tonekābon?
The windiest day measured in Tonekābon between 1940 and 2025 was 16 October 1981, with winds reaching 26.7 km/h.
What is the warmest month in Tonekābon?
The warmest month in Tonekābon is July (19.9 °C on average); the coldest is January (1.2 °C).
How much does it rain in Tonekābon?
Tonekābon receives on average 1,355 mm of precipitation per year, spread over about 196 rainy days.
Is it sunny in Tonekābon?
Tonekābon gets on average 10.0 hours of sunshine per day, roughly 3,650 hours per year over 1940-2025.
What is the biggest single-day snowfall in Tonekābon?
The heaviest 24-hour snowfall measured in Tonekābon between 1940 and 2025 was 26 October 1987, with 22.3 cm.
Are there tropical nights in Tonekābon?
Yes: Tonekābon has on average 5 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Tonekābon?
In Tonekābon, between 1940 and 2025, the highest apparent temperature reached 35.6 °C on 3 August 2011, and the lowest was -17.6 °C on 20 January 1964.
Compare Tonekābon with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Tonekābon