Weather in Heraklion in August 2025
- August is usually the hottest month of the year in Heraklion;
Average weather
Average temperature in Heraklion in August
The expected average maximum temperature in August is +31°C with a maximum of +34°C and a minimum of +21°C.
The average maximum temperature goes down 8% by the end of the month, compared with the beginning of the month, from +32°C to +31°C.
Is Heraklion warm or cold in August?
Heraklion is typically warm in August.
Maximum temperatures go up compared to the previous month from +28°C to +28°C. The minimum temperature also goes up from +23°C to +23°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
August is the hottest month in Heraklion, here is the comparison with other months:
Water temperature in Heraklion in August
Water in Heraklion in August is Warm. It varies from +24°C to +28°C, with an average of +26°C. This is almost similar to the air temperature, which averages +28°C.
The water temperature in August is one of the warmest of the entire year:
Can you swim in Heraklion in August?
Climate in Heraklion in August
| July | August | September | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +28°C | +28°C | +26°C | ||||
| Min. temperature | ||||||
| +18°C | +20°C | +14°C | ||||
| Max. temperature | ||||||
| +38°C | +40°C | +37°C | ||||
| Rainfall | ||||||
| 4 mm | 5 mm | 17 mm | ||||
| Wind | ||||||
| 4 m/s | 4 m/s | 3 m/s | ||||
| Avg. water temperature | ||||||
| +25°C | +26°C | +25°C | ||||
| Humidity | ||||||
| 59% | 62% | 64% | ||||
| Air pressure | ||||||
| 1009 HPa | 1010 HPa | 1013 HPa | ||||
| Sunny days | ||||||
| 29 | 29 | 22 | ||||
| Cloudy days | ||||||
| 1 | 1 | 3 | ||||
| Rainy days | ||||||
| 1 | 1 | 4 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
August weather is still as great as in July. The temperature levels stay the same in the area of +28°C for average maximum temperature during the day. Prepare for more rain. Average rainfall goes from 4 mm to 5 mm. Humidity rises from 59% to 62%. The average wind speed doesn’t change much during August, staying around 4 m/s. The amount of sunny days stay about the same, averaging 29 sunny days during the month.
September brings much the same weather, it remains great.
Wind
The average wind speed is 4 m/s getting up to 7 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 August, going from 3 m/s to 5 m/s over the course of the month.
Rain
How was the weather last August in Heraklion?
Climate Change over Years
The climate in Heraklion in August 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 August a good time to visit Heraklion?
Can you sunbathe in Heraklion in August?
Can you swim in Heraklion in August?
Is Heraklion rainy in August?
Is it sunny in Heraklion in August?
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.