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Hamadān, Iran climate
Csa Hot-summer Mediterranean
Hamadān has a strongly seasonal mild-temperate climate (Hot-summer Mediterranean, Köppen Csa). The hottest month is July with an average daily high near 39°C, while the coldest is January averaging around −3°C at night. Precipitation totals about 378 mm a year and is strongly seasonal — April alone averages 57 mm while August barely receives 0 mm.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresClear vs cloudy days
Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day countsHamadān climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 8 | 11 | 16 | 21 | 27 | 35 | 39 | 39 | 34 | 27 | 17 | 11 |
| Avg temp (°C) | 2 | 5 | 9 | 14 | 18 | 24 | 28 | 28 | 23 | 17 | 10 | 5 |
| Avg low (°C) | −3 | −2 | 1 | 6 | 9 | 14 | 18 | 17 | 12 | 8 | 3 | −1 |
| Precipitation (mm) | 48 | 52 | 57 | 57 | 25 | 10 | 8 | 0 | 2 | 25 | 53 | 43 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 8 | 11 | 16 | 21 | 27 | 35 |
| Avg temp (°C) | 2 | 5 | 9 | 14 | 18 | 24 |
| Avg low (°C) | −3 | −2 | 1 | 6 | 9 | 14 |
| Precipitation (mm) | 48 | 52 | 57 | 57 | 25 | 10 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 39 | 39 | 34 | 27 | 17 | 11 |
| Avg temp (°C) | 28 | 28 | 23 | 17 | 10 | 5 |
| Avg low (°C) | 18 | 17 | 12 | 8 | 3 | −1 |
| Precipitation (mm) | 8 | 0 | 2 | 25 | 53 | 43 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 6 | 7 | 7 | 7 | 4 | 0.5 | 0.3 | 0.1 | 0.4 | 3 | 6 | 6 |
| Days with high ≥ 32°C (days) | — | — | — | 0.1 | 4 | 24 | 29 | 29 | 22 | 1 | — | — |
| Days with low ≤ 0°C (days) | 19 | 15 | 10 | 1 | 0.0 | — | — | — | — | 0.2 | 7 | 15 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 6 | 7 | 7 | 7 | 4 | 0.5 |
| Days with high ≥ 32°C (days) | — | — | — | 0.1 | 4 | 24 |
| Days with low ≤ 0°C (days) | 19 | 15 | 10 | 1 | 0.0 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 0.3 | 0.1 | 0.4 | 3 | 6 | 6 |
| Days with high ≥ 32°C (days) | 29 | 29 | 22 | 1 | — | — |
| Days with low ≤ 0°C (days) | — | — | — | 0.2 | 7 | 15 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 55 | 57 | 55 | 55 | 42 | 20 | 21 | 19 | 18 | 35 | 46 | 52 |
| Clear days (≤ 30% cloud) | 7 | 5 | 8 | 7 | 13 | 24 | 23 | 25 | 25 | 17 | 12 | 9 |
| Partly cloudy days (30–70%) | 14 | 13 | 12 | 12 | 12 | 5 | 7 | 6 | 4 | 9 | 10 | 12 |
| Cloudy days (≥ 70%) | 10 | 10 | 11 | 11 | 6 | 1 | 0.9 | 0.9 | 0.5 | 4 | 8 | 10 |
| Relative humidity (%) | 71 | 68 | 62 | 57 | 45 | 26 | 20 | 20 | 23 | 37 | 58 | 67 |
| Wind speed (m/s) | 1.6 | 1.8 | 1.8 | 1.7 | 1.6 | 1.7 | 1.8 | 1.8 | 1.8 | 1.7 | 1.6 | 1.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 55 | 57 | 55 | 55 | 42 | 20 |
| Clear days (≤ 30% cloud) | 7 | 5 | 8 | 7 | 13 | 24 |
| Partly cloudy days (30–70%) | 14 | 13 | 12 | 12 | 12 | 5 |
| Cloudy days (≥ 70%) | 10 | 10 | 11 | 11 | 6 | 1 |
| Relative humidity (%) | 71 | 68 | 62 | 57 | 45 | 26 |
| Wind speed (m/s) | 1.6 | 1.8 | 1.8 | 1.7 | 1.6 | 1.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 21 | 19 | 18 | 35 | 46 | 52 |
| Clear days (≤ 30% cloud) | 23 | 25 | 25 | 17 | 12 | 9 |
| Partly cloudy days (30–70%) | 7 | 6 | 4 | 9 | 10 | 12 |
| Cloudy days (≥ 70%) | 0.9 | 0.9 | 0.5 | 4 | 8 | 10 |
| Relative humidity (%) | 20 | 20 | 23 | 37 | 58 | 67 |
| Wind speed (m/s) | 1.8 | 1.8 | 1.8 | 1.7 | 1.6 | 1.5 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 29 years of daily observations at Kermanshah, a weather station, about 141 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.