Āstārā climate — normals and trends
Āstārā (Iran) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 13.2 °C and it receives 1,185 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 (23.4 °C on average) and the coldest is January (3.1 °C). Rainfall peaks in October.
Āstārā averages 33 frost days, 4 hot days (≥ 30 °C) and 148 rainy days per year.
Āstārā has warmed by +2.2 °C between 1940 and 2025, or +0.26 °C per decade. This trend is statistically significant.
The number of frost days there went from about 47 to 19 per year over the period.
The hottest day of the period reached 33.5 °C (on 13 August 2006) and the coldest -10.2 °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
ĀstārāGilan Province
- coords
- 38.43°, 48.87°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
13.2°C
Average daily high
16.0°C
Average daily low
10.5°C
Annual rainfall
1,185mm
Sunshine / day
9.7h
Mean relative humidity
79%
Average peak wind
9.9km/h
Seasonal range
20.3°C
Frost days (< 0 °C)
33 d/yr
Hot days (≥ 30 °C)
4 d/yr
Rainy days (≥ 1 mm)
148 d/yr
Annual snowfall
115.6 cm
Average feels-like high
16.2 °C
Average feels-like low
9.6 °C
Average peak gust
23.2 km/h
Tropical nights (≥ 20 °C)
45 d/yr
Solar radiation
15.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.2 °C
since 1940
+0.3 °C per decade · r² = 0.47 · 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
13 August 2006
Coldest day
-10.2 °C
13 January 1940
Wettest day
79 mm
7 September 1997
Windiest day
29.9 km/h
3 January 2010
Strongest gust
70.6 km/h
3 January 2010
Hottest feels-like
39.4 °C
1 July 2018
Coldest feels-like
-14.4 °C
13 January 1940
Snowiest day
26.5 cm
23 January 1946
Sunniest day
14.0 h
2 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 | 9.2 °C | +3.3 °C | 68 mm | -44 mm |
| Feb | 5.4 °C | -0.8 °C | 225 mm | +119 mm |
| Mar | 12.6 °C | +3.6 °C | 78 mm | -28 mm |
| Apr | 16.9 °C | +2.4 °C | 105 mm | +29 mm |
| May | 21.6 °C | +2.0 °C | 52 mm | -22 mm |
| Jun | 24.3 °C | +0.5 °C | 22 mm | -19 mm |
| Jul | 28.3 °C | +2.0 °C | 2 mm | -28 mm |
| Aug | 28.1 °C | +1.9 °C | 53 mm | +5 mm |
| Sep | 22.2 °C | -0.2 °C | 207 mm | +90 mm |
| Oct | 20.0 °C | +2.3 °C | 111 mm | -75 mm |
| Nov | 16.9 °C | +4.2 °C | 88 mm | -77 mm |
| Dec | 10.2 °C | +2.0 °C | 202 mm | +76 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 Āstārā?
Āstārā has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 13.2 °C and it receives 1,185 mm of precipitation per year.
What is the hottest day ever recorded in Āstārā?
The hottest day measured in Āstārā between 1940 and 2025 was 13 August 2006, reaching 33.5 °C.
What is the coldest day in Āstārā?
The coldest day measured in Āstārā between 1940 and 2025 was 13 January 1940, at -10.2 °C.
Does it snow in Āstārā?
Yes. Āstārā gets on average 115.6 cm of snow per year and has around 33 frost days.
Has the climate of Āstārā warmed?
Yes: Āstārā warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Āstārā?
The wettest day measured in Āstārā between 1940 and 2025 was 7 September 1997, with 79 mm of rain in 24 hours.
What was the windiest day in Āstārā?
The windiest day measured in Āstārā between 1940 and 2025 was 3 January 2010, with winds reaching 29.9 km/h.
What is the warmest month in Āstārā?
The warmest month in Āstārā is July (23.4 °C on average); the coldest is January (3.1 °C).
How much does it rain in Āstārā?
Āstārā receives on average 1,185 mm of precipitation per year, spread over about 148 rainy days.
Is it sunny in Āstārā?
Āstārā gets on average 9.7 hours of sunshine per day, roughly 3,540 hours per year over 1940-2025.
What is the biggest single-day snowfall in Āstārā?
The heaviest 24-hour snowfall measured in Āstārā between 1940 and 2025 was 23 January 1946, with 26.5 cm.
Are there tropical nights in Āstārā?
Yes: Āstārā has on average 45 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Āstārā?
In Āstārā, between 1940 and 2025, the highest apparent temperature reached 39.4 °C on 1 July 2018, and the lowest was -14.4 °C on 13 January 1940.
Compare Āstārā with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Āstārā