Qazvin, Iran climate
BSk Cold semi-arid
Qazvin has a strongly seasonal mild-temperate climate (Cold semi-arid, Köppen BSk). The hottest month is July with an average daily high near 35°C, while the coldest is January averaging around −4°C at night. Precipitation totals about 273 mm a year and is strongly seasonal — April alone averages 51 mm while September barely receives 2 mm.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Qazvin climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 7 | 10 | 15 | 20 | 26 | 33 | 35 | 35 | 31 | 24 | 14 | 9 |
| Avg temp (°C) | 1 | 4 | 8 | 13 | 18 | 24 | 27 | 26 | 22 | 16 | 8 | 4 |
| Avg low (°C) | −4 | −2 | 2 | 6 | 11 | 15 | 18 | 18 | 14 | 9 | 3 | −1 |
| Precipitation (mm) | 31 | 31 | 37 | 51 | 29 | 8 | 3 | 2 | 2 | 17 | 32 | 30 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 7 | 10 | 15 | 20 | 26 | 33 |
| Avg temp (°C) | 1 | 4 | 8 | 13 | 18 | 24 |
| Avg low (°C) | −4 | −2 | 2 | 6 | 11 | 15 |
| Precipitation (mm) | 31 | 31 | 37 | 51 | 29 | 8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 35 | 35 | 31 | 24 | 14 | 9 |
| Avg temp (°C) | 27 | 26 | 22 | 16 | 8 | 4 |
| Avg low (°C) | 18 | 18 | 14 | 9 | 3 | −1 |
| Precipitation (mm) | 3 | 2 | 2 | 17 | 32 | 30 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 76 | 77 | 76 | 74 | 65 | 53 | 56 | 52 | 50 | 62 | 73 | 75 |
| Relative humidity (%) | 68 | 64 | 59 | 56 | 49 | 40 | 35 | 35 | 41 | 51 | 63 | 67 |
| Wind speed (m/s) | 2.1 | 2.4 | 2.5 | 2.4 | 2.3 | 2.6 | 2.7 | 2.5 | 2.4 | 2.0 | 1.9 | 1.9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 76 | 77 | 76 | 74 | 65 | 53 |
| Relative humidity (%) | 68 | 64 | 59 | 56 | 49 | 40 |
| Wind speed (m/s) | 2.1 | 2.4 | 2.5 | 2.4 | 2.3 | 2.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 56 | 52 | 50 | 62 | 73 | 75 |
| Relative humidity (%) | 35 | 35 | 41 | 51 | 63 | 67 |
| Wind speed (m/s) | 2.7 | 2.5 | 2.4 | 2.0 | 1.9 | 1.9 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 26 years of daily observations at Ghazvin, a weather station, about 5 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.