Irákleion is warmest in August, averaging 29° by day and 25° at night. The wettest month is January with 87 mm, and the year brings about 458 mm in total.
Month by month
| Month | High | Low | Rain | Sea | Daylight | Good for |
|---|---|---|---|---|---|---|
| January | 15° | 12° | 87 mm | 17° | 9.9 h | Mild |
| February | 15° | 12° | 64 mm | 16° | 10.7 h | Mild |
| March | 16° | 13° | 56 mm | 16° | 11.7 h | Mild |
| April | 19° | 15° | 24 mm | 17° | 12.9 h | Sightseeing |
| May | 23° | 18° | 16 mm | 20° | 13.9 h | Sightseeing |
| June | 26° | 22° | 12 mm | 24° | 14.4 h | Beach weather |
| July | 28° | 24° | 6 mm | 26° | 14.2 h | Beach weather |
| August | 29° | 25° | 6 mm | 27° | 13.3 h | Beach weather |
| September | 27° | 23° | 21 mm | 26° | 12.2 h | Beach weather |
| October | 24° | 20° | 34 mm | 23° | 11.1 h | Sightseeing |
| November | 20° | 17° | 48 mm | 21° | 10.1 h | Sightseeing |
| December | 17° | 13° | 84 mm | 19° | 9.6 h | Sightseeing |
High and low are average daily maximum and minimum, rain is typical monthly total, sea is the average surface temperature, daylight is the hours between sunrise and sunset mid-month. Climate normals from NASA POWER and NOAA MUR — averages, not promises.
When to go
Beach weather: June, July, August and September — highs around 28°, nights no colder than 22°, and at most 21 mm of rain in a month. The sea sits at 24–27° then.
Walking the city: April, May, October, November and December — highs of 17–24° and no more than 84 mm of rain a month.