Nahavand climate — normals and trends
Nahavand (Iran) has a hot-summer mediterranean continental climate (Dsa) under the Köppen-Geiger classification. Its mean annual temperature is 12.0 °C and it receives 445 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 (26.4 °C on average) and the coldest is January (-2.8 °C). Rainfall peaks in March.
Nahavand averages 110 frost days, 83 hot days (≥ 30 °C) and 71 rainy days per year.
Nahavand has warmed by +3.3 °C between 1940 and 2025, or +0.38 °C per decade. This trend is statistically significant.
The number of frost days there went from about 131 to 89 per year over the period.
The hottest day of the period reached 40.0 °C (on 13 July 2023) and the coldest -27.2 °C (on 29 December 1988).
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
NahavandHamadan Province
- coords
- 34.19°, 48.37°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.0°C
Average daily high
18.5°C
Average daily low
5.6°C
Annual rainfall
445mm
Sunshine / day
10.9h
Mean relative humidity
49%
Average peak wind
12.0km/h
Seasonal range
29.2°C
Frost days (< 0 °C)
110 d/yr
Hot days (≥ 30 °C)
83 d/yr
Rainy days (≥ 1 mm)
71 d/yr
Annual snowfall
107.8 cm
Average feels-like high
16.0 °C
Average feels-like low
2.6 °C
Average peak gust
37.6 km/h
Tropical nights (≥ 20 °C)
10 d/yr
Solar radiation
20.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+3.3 °C
since 1940
+0.4 °C per decade · r² = 0.52 · 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
40.0 °C
13 July 2023
Coldest day
-27.2 °C
29 December 1988
Wettest day
59 mm
25 February 2020
Windiest day
38.1 km/h
7 April 1964
Strongest gust
116.3 km/h
25 November 1992
Hottest feels-like
38.9 °C
19 August 2025
Coldest feels-like
-31.9 °C
29 December 1988
Snowiest day
25.0 cm
31 January 2023
Sunniest day
14.0 h
22 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 | 6.3 °C | +3.6 °C | 28 mm | -30 mm |
| Feb | 4.5 °C | -0.1 °C | 66 mm | +2 mm |
| Mar | 13.6 °C | +3.9 °C | 67 mm | -22 mm |
| Apr | 19.9 °C | +3.7 °C | 60 mm | -10 mm |
| May | 27.5 °C | +5.2 °C | 15 mm | -18 mm |
| Jun | 32.3 °C | +2.7 °C | 2 mm | +0 mm |
| Jul | 36.0 °C | +2.2 °C | 2 mm | +1 mm |
| Aug | 36.8 °C | +3.6 °C | 0 mm | -0 mm |
| Sep | 30.6 °C | +1.7 °C | 0 mm | -1 mm |
| Oct | 25.4 °C | +4.0 °C | 0 mm | -20 mm |
| Nov | 18.3 °C | +5.3 °C | 2 mm | -48 mm |
| Dec | 8.2 °C | +2.1 °C | 69 mm | +10 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 Nahavand?
Nahavand has a hot-summer mediterranean continental climate (Köppen Dsa). Over 1940-2025, the average annual temperature is 12.0 °C and it receives 445 mm of precipitation per year.
What is the hottest day ever recorded in Nahavand?
The hottest day measured in Nahavand between 1940 and 2025 was 13 July 2023, reaching 40.0 °C.
What is the coldest day in Nahavand?
The coldest day measured in Nahavand between 1940 and 2025 was 29 December 1988, at -27.2 °C.
Does it snow in Nahavand?
Yes. Nahavand gets on average 107.8 cm of snow per year and has around 110 frost days.
Has the climate of Nahavand warmed?
Yes: Nahavand warmed by +3.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Nahavand?
The wettest day measured in Nahavand between 1940 and 2025 was 25 February 2020, with 59 mm of rain in 24 hours.
What was the windiest day in Nahavand?
The windiest day measured in Nahavand between 1940 and 2025 was 7 April 1964, with winds reaching 38.1 km/h.
What is the warmest month in Nahavand?
The warmest month in Nahavand is July (26.4 °C on average); the coldest is January (-2.8 °C).
How much does it rain in Nahavand?
Nahavand receives on average 445 mm of precipitation per year, spread over about 71 rainy days.
Is it sunny in Nahavand?
Nahavand gets on average 10.9 hours of sunshine per day, roughly 3,979 hours per year over 1940-2025.
What is the biggest single-day snowfall in Nahavand?
The heaviest 24-hour snowfall measured in Nahavand between 1940 and 2025 was 31 January 2023, with 25.0 cm.
Are there tropical nights in Nahavand?
Yes: Nahavand has on average 10 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Nahavand?
In Nahavand, between 1940 and 2025, the highest apparent temperature reached 38.9 °C on 19 August 2025, and the lowest was -31.9 °C on 29 December 1988.
Compare Nahavand with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Nahavand