Weather in Heraklion in May 2025
Average weather
Average temperature in Heraklion in May
The expected average maximum temperature in May is +22°C with a maximum of +30°C and a minimum of +12°C.
The average maximum temperature goes up 28% by the end of the month, compared with the beginning of the month, from +18°C to +23°C.
Is Heraklion warm or cold in May?
Heraklion is typically warm in May.
Maximum temperatures go up compared to the previous month from +19°C to +23°C. The minimum temperature also goes up from +13°C to +16°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how May is compared to other months in Heraklion:
Water temperature in Heraklion in May
Water in Heraklion in May is Fresh. It varies from +17°C to +21°C, with an average of +19°C. This is almost similar to the air temperature, which averages +23°C.
In May, water temperatures are average relative to the rest of the year:
Can you swim in Heraklion in May?
Climate in Heraklion in May
| April | May | June | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +19°C | +23°C | +26°C | ||||
| Min. temperature | ||||||
| +7°C | +11°C | +14°C | ||||
| Max. temperature | ||||||
| +34°C | +36°C | +37°C | ||||
| Rainfall | ||||||
| 39 mm | 24 mm | 9 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 3 m/s | ||||
| Avg. water temperature | ||||||
| +17°C | +19°C | +23°C | ||||
| Humidity | ||||||
| 63% | 63% | 60% | ||||
| Air pressure | ||||||
| 1012 HPa | 1012 HPa | 1011 HPa | ||||
| Sunny days | ||||||
| 13 | 18 | 25 | ||||
| Cloudy days | ||||||
| 7 | 5 | 1 | ||||
| Rainy days | ||||||
| 8 | 7 | 3 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
May often has better weather than April. It’s getting warmer as May arrives. The average maximum temperature goes up from +19°C to +23°C during the day. As May arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 39 mm to 24 mm. Humidity levels don’t change as the month goes on, averaging around 63%. The average wind speed doesn’t change much during May, staying around 3 m/s. The good news is there are likely to be more sunny days in May, from 13 to 18.
June brings much the same weather, it remains great.
Wind
The average wind speed is 4 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Heraklion is gradually increasing during May, going from 1 m/s to 2 m/s over the course of the month.
Rain
How was the weather last May in Heraklion?
Climate Change over Years
The climate in Heraklion in May has not changed much over the last 43 years.
The average temperature was the lowest in 1983 (+20°C) and the highest in 2023 (+23°C). The driest year was 1990 with only 234 mm of rainfall, and the wettest year was 2019 with 1122 mm.
FAQ
Is May a good time to visit Heraklion?
Can you sunbathe in Heraklion in May?
Can you swim in Heraklion in May?
Is Heraklion rainy in May?
Is it sunny in Heraklion in May?
Other cities in Greece
Monthly weather in Heraklion
Source of the data
For this page, we’ve looked at the typical weather in Heraklion, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.