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Ermoúpolis, Greece climate
BWh Hot desert
Ermoúpolis has a seasonal warm-temperate climate (Hot desert, Köppen BWh). The hottest month is July with an average daily high near 30°C, while the coldest is January averaging around 10°C at night. Precipitation totals about 60 mm a year and is strongly seasonal — January alone averages 16 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 figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Ermoúpolis climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 13 | 14 | 16 | 19 | 23 | 27 | 30 | 29 | 26 | 22 | 18 | 15 |
| Avg temp (°C) | 11 | 12 | 14 | 16 | 20 | 25 | 27 | 27 | 24 | 20 | 17 | 13 |
| Avg low (°C) | 10 | 10 | 11 | 14 | 18 | 22 | 25 | 25 | 22 | 18 | 15 | 11 |
| Precipitation (mm) | 16 | — | 4 | 4 | 0 | 2 | 2 | 0 | 1 | 5 | 9 | 16 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 13 | 14 | 16 | 19 | 23 | 27 |
| Avg temp (°C) | 11 | 12 | 14 | 16 | 20 | 25 |
| Avg low (°C) | 10 | 10 | 11 | 14 | 18 | 22 |
| Precipitation (mm) | 16 | — | 4 | 4 | 0 | 2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 30 | 29 | 26 | 22 | 18 | 15 |
| Avg temp (°C) | 27 | 27 | 24 | 20 | 17 | 13 |
| Avg low (°C) | 25 | 25 | 22 | 18 | 15 | 11 |
| Precipitation (mm) | 2 | 0 | 1 | 5 | 9 | 16 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 63 | 62 | 57 | 51 | 42 | 24 | 17 | 15 | 28 | 45 | 58 | 65 |
| Relative humidity (%) | 77 | 77 | 76 | 76 | 76 | 73 | 72 | 73 | 72 | 76 | 78 | 78 |
| Wind speed (m/s) | 6.0 | 6.1 | 5.5 | 4.7 | 4.0 | 4.2 | 5.3 | 5.7 | 5.1 | 5.2 | 5.4 | 6.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 63 | 62 | 57 | 51 | 42 | 24 |
| Relative humidity (%) | 77 | 77 | 76 | 76 | 76 | 73 |
| Wind speed (m/s) | 6.0 | 6.1 | 5.5 | 4.7 | 4.0 | 4.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 17 | 15 | 28 | 45 | 58 | 65 |
| Relative humidity (%) | 72 | 73 | 72 | 76 | 78 | 78 |
| Wind speed (m/s) | 5.3 | 5.7 | 5.1 | 5.2 | 5.4 | 6.0 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 23 years of daily observations at Syros / Dimitrios Vikelas, a weather station, about 3 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.