Khomām climate — normals and trends
Khomām (Iran) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 17.0 °C and it receives 1,037 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 (26.3 °C on average) and the coldest is February (8.4 °C). Rainfall peaks in October.
Khomām averages 0 frost days, 5 hot days (≥ 30 °C) and 117 rainy days per year.
Khomām has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The hottest day of the period reached 32.4 °C (on 29 July 2011) and the coldest -1.2 °C (on 15 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
KhomāmGilan Province
- coords
- 37.39°, 49.66°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
17.0°C
Average daily high
18.5°C
Average daily low
15.7°C
Annual rainfall
1,037mm
Sunshine / day
9.2h
Mean relative humidity
79%
Average peak wind
19.9km/h
Seasonal range
17.9°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
5 d/yr
Rainy days (≥ 1 mm)
117 d/yr
Annual snowfall
7.3 cm
Average feels-like high
18.7 °C
Average feels-like low
15.1 °C
Average peak gust
28.6 km/h
Tropical nights (≥ 20 °C)
122 d/yr
Solar radiation
15.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.45 · 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
32.4 °C
29 July 2011
Coldest day
-1.2 °C
15 January 1940
Wettest day
89 mm
20 October 1994
Windiest day
70.7 km/h
4 December 2015
Strongest gust
105.8 km/h
4 December 2015
Hottest feels-like
40.0 °C
31 July 2011
Coldest feels-like
-8.1 °C
19 January 1964
Snowiest day
14.0 cm
11 January 1940
Sunniest day
14.0 h
30 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 | 12.0 °C | +1.4 °C | 72 mm | -33 mm |
| Feb | 9.6 °C | -0.4 °C | 172 mm | +81 mm |
| Mar | 13.4 °C | +2.2 °C | 101 mm | +20 mm |
| Apr | 17.0 °C | +2.1 °C | 47 mm | -0 mm |
| May | 20.1 °C | +0.3 °C | 9 mm | -20 mm |
| Jun | 24.9 °C | +0.2 °C | 20 mm | -11 mm |
| Jul | 27.9 °C | +0.7 °C | 17 mm | -17 mm |
| Aug | 29.0 °C | +1.4 °C | 29 mm | -22 mm |
| Sep | 25.1 °C | +0.3 °C | 216 mm | +100 mm |
| Oct | 22.1 °C | +1.0 °C | 89 mm | -84 mm |
| Nov | 19.6 °C | +2.6 °C | 36 mm | -124 mm |
| Dec | 15.1 °C | +2.0 °C | 196 mm | +74 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 Khomām?
Khomām has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 17.0 °C and it receives 1,037 mm of precipitation per year.
What is the hottest day ever recorded in Khomām?
The hottest day measured in Khomām between 1940 and 2025 was 29 July 2011, reaching 32.4 °C.
What is the coldest day in Khomām?
The coldest day measured in Khomām between 1940 and 2025 was 15 January 1940, at -1.2 °C.
Does it snow in Khomām?
Yes. Khomām gets on average 7.3 cm of snow per year and has around 0 frost days.
Has the climate of Khomām warmed?
Yes: Khomām warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Khomām?
The wettest day measured in Khomām between 1940 and 2025 was 20 October 1994, with 89 mm of rain in 24 hours.
What was the windiest day in Khomām?
The windiest day measured in Khomām between 1940 and 2025 was 4 December 2015, with winds reaching 70.7 km/h.
What is the warmest month in Khomām?
The warmest month in Khomām is August (26.3 °C on average); the coldest is February (8.4 °C).
How much does it rain in Khomām?
Khomām receives on average 1,037 mm of precipitation per year, spread over about 117 rainy days.
Is it sunny in Khomām?
Khomām gets on average 9.2 hours of sunshine per day, roughly 3,358 hours per year over 1940-2025.
What is the biggest single-day snowfall in Khomām?
The heaviest 24-hour snowfall measured in Khomām between 1940 and 2025 was 11 January 1940, with 14.0 cm.
Are there tropical nights in Khomām?
Yes: Khomām has on average 122 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Khomām?
In Khomām, between 1940 and 2025, the highest apparent temperature reached 40.0 °C on 31 July 2011, and the lowest was -8.1 °C on 19 January 1964.
Compare Khomām with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Khomām