Sari, Iran climate
BWk Cold desert
Sari has a strongly seasonal mild-temperate climate (Cold desert, Köppen BWk). The hottest month is July with an average daily high near 38°C, while the coldest is January averaging around 0°C at night. Precipitation totals about 131 mm a year and is strongly seasonal — December alone averages 21 mm while July barely receives 3 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)Sari climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 9 | 12 | 19 | 24 | 31 | 37 | 38 | 37 | 33 | 26 | 16 | 11 |
| Avg temp (°C) | 5 | 7 | 12 | 17 | 23 | 28 | 31 | 30 | 26 | 19 | 11 | 6 |
| Avg low (°C) | 0 | 1 | 5 | 10 | 16 | 20 | 23 | 22 | 18 | 13 | 6 | 2 |
| Precipitation (mm) | 15 | 19 | 15 | 18 | 11 | 7 | 3 | 3 | 3 | 5 | 12 | 21 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 9 | 12 | 19 | 24 | 31 | 37 |
| Avg temp (°C) | 5 | 7 | 12 | 17 | 23 | 28 |
| Avg low (°C) | 0 | 1 | 5 | 10 | 16 | 20 |
| Precipitation (mm) | 15 | 19 | 15 | 18 | 11 | 7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 38 | 37 | 33 | 26 | 16 | 11 |
| Avg temp (°C) | 31 | 30 | 26 | 19 | 11 | 6 |
| Avg low (°C) | 23 | 22 | 18 | 13 | 6 | 2 |
| Precipitation (mm) | 3 | 3 | 3 | 5 | 12 | 21 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 3 | 3 | 3 | 4 | 3 | 1 | 0.8 | 0.6 | 0.7 | 1 | 3 | 3 |
| Days with high ≥ 32°C (days) | — | — | — | 0.5 | 7 | 16 | 18 | 18 | 13 | 1 | — | — |
| Days with low ≤ 0°C (days) | 9 | 4 | 1.0 | — | — | — | — | — | — | — | 0.8 | 6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 3 | 3 | 3 | 4 | 3 | 1 |
| Days with high ≥ 32°C (days) | — | — | — | 0.5 | 7 | 16 |
| Days with low ≤ 0°C (days) | 9 | 4 | 1.0 | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 0.8 | 0.6 | 0.7 | 1 | 3 | 3 |
| Days with high ≥ 32°C (days) | 18 | 18 | 13 | 1 | — | — |
| Days with low ≤ 0°C (days) | — | — | — | — | 0.8 | 6 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 49 | 52 | 57 | 58 | 50 | 36 | 36 | 31 | 28 | 37 | 48 | 50 |
| Relative humidity (%) | 61 | 56 | 50 | 44 | 37 | 29 | 29 | 29 | 33 | 41 | 53 | 61 |
| Wind speed (km/h) | 7.7 | 9.3 | 10.3 | 10.6 | 11.4 | 15.1 | 16.9 | 14.7 | 12.0 | 9.6 | 8.1 | 7.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 49 | 52 | 57 | 58 | 50 | 36 |
| Relative humidity (%) | 61 | 56 | 50 | 44 | 37 | 29 |
| Wind speed (km/h) | 7.7 | 9.3 | 10.3 | 10.6 | 11.4 | 15.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 36 | 31 | 28 | 37 | 48 | 50 |
| Relative humidity (%) | 29 | 29 | 33 | 41 | 53 | 61 |
| Wind speed (km/h) | 16.9 | 14.7 | 12.0 | 9.6 | 8.1 | 7.2 |
Methodology & sources
Temperature — modelled for this location from ERA5-Land reanalysis, a ~9 km global grid, because no long-record weather station is close enough to use.
Precipitation — 1991–2020 normals computed from 17 years of daily observations at Semnan, a weather station, about 115 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.