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Irákleion, Greece climate
Csa Hot-summer Mediterranean
Irákleion has a seasonal warm-temperate climate (Hot-summer Mediterranean, Köppen Csa). The hottest month is August with an average daily high near 29°C, while the coldest is February averaging around 9°C at night. Precipitation totals about 464 mm a year and is strongly seasonal — December alone averages 91 mm while July barely receives 1 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 countsIrákleion climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 16 | 15 | 17 | 20 | 24 | 28 | 29 | 29 | 27 | 24 | 20 | 17 |
| Avg temp (°C) | 12 | 12 | 13 | 16 | 20 | 24 | 26 | 26 | 24 | 21 | 17 | 14 |
| Avg low (°C) | 9 | 9 | 10 | 12 | 15 | 20 | 22 | 23 | 20 | 17 | 14 | 10 |
| Precipitation (mm) | 91 | 69 | 47 | 22 | 12 | 2 | 1 | 2 | 12 | 50 | 65 | 91 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 16 | 15 | 17 | 20 | 24 | 28 |
| Avg temp (°C) | 12 | 12 | 13 | 16 | 20 | 24 |
| Avg low (°C) | 9 | 9 | 10 | 12 | 15 | 20 |
| Precipitation (mm) | 91 | 69 | 47 | 22 | 12 | 2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 29 | 29 | 27 | 24 | 20 | 17 |
| Avg temp (°C) | 26 | 26 | 24 | 21 | 17 | 14 |
| Avg low (°C) | 22 | 23 | 20 | 17 | 14 | 10 |
| Precipitation (mm) | 1 | 2 | 12 | 50 | 65 | 91 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 13 | 10 | 8 | 5 | 3 | 0.6 | 0.3 | 0.3 | 2 | 5 | 8 | 12 |
| Days with high ≥ 32°C (days) | — | — | 0.1 | 0.2 | 1 | 2 | 3 | 2 | 1 | 0.5 | 0.0 | — |
| Days with low ≤ 0°C (days) | 0.0 | 0.1 | 0.0 | — | — | — | — | — | — | — | — | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 13 | 10 | 8 | 5 | 3 | 0.6 |
| Days with high ≥ 32°C (days) | — | — | 0.1 | 0.2 | 1 | 2 |
| Days with low ≤ 0°C (days) | 0.0 | 0.1 | 0.0 | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 0.3 | 0.3 | 2 | 5 | 8 | 12 |
| Days with high ≥ 32°C (days) | 3 | 2 | 1 | 0.5 | 0.0 | — |
| Days with low ≤ 0°C (days) | — | — | — | — | — | — |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 70 | 68 | 61 | 53 | 40 | 21 | 13 | 13 | 27 | 48 | 62 | 72 |
| Clear days (≤ 30% cloud) | 4 | 4 | 6 | 7 | 14 | 23 | 29 | 29 | 20 | 10 | 5 | 3 |
| Partly cloudy days (30–70%) | 10 | 9 | 12 | 13 | 12 | 6 | 2 | 2 | 8 | 13 | 12 | 9 |
| Cloudy days (≥ 70%) | 18 | 15 | 14 | 10 | 6 | 1 | 0.2 | 0.1 | 2 | 8 | 13 | 19 |
| Relative humidity (%) | 76 | 76 | 75 | 72 | 70 | 68 | 68 | 70 | 69 | 72 | 74 | 75 |
| Wind speed (m/s) | 5.4 | 5.5 | 5.0 | 4.4 | 3.8 | 4.2 | 5.0 | 5.0 | 4.5 | 4.2 | 4.6 | 5.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 70 | 68 | 61 | 53 | 40 | 21 |
| Clear days (≤ 30% cloud) | 4 | 4 | 6 | 7 | 14 | 23 |
| Partly cloudy days (30–70%) | 10 | 9 | 12 | 13 | 12 | 6 |
| Cloudy days (≥ 70%) | 18 | 15 | 14 | 10 | 6 | 1 |
| Relative humidity (%) | 76 | 76 | 75 | 72 | 70 | 68 |
| Wind speed (m/s) | 5.4 | 5.5 | 5.0 | 4.4 | 3.8 | 4.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 13 | 13 | 27 | 48 | 62 | 72 |
| Clear days (≤ 30% cloud) | 29 | 29 | 20 | 10 | 5 | 3 |
| Partly cloudy days (30–70%) | 2 | 2 | 8 | 13 | 12 | 9 |
| Cloudy days (≥ 70%) | 0.2 | 0.1 | 2 | 8 | 13 | 19 |
| Relative humidity (%) | 68 | 70 | 69 | 72 | 74 | 75 |
| Wind speed (m/s) | 5.0 | 5.0 | 4.5 | 4.2 | 4.6 | 5.3 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 21 years of daily observations at Heraklion, a weather station, about 4 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.