May weather forecastPireas, Greece
May
Weather in May
Sea temperature
In Pireas, Greece, in May, the average water temperature is 18.5°C (65.3°F).Note: In water of 18.5°C (65.3°F), the majority of people do not enjoy swimming. Breathing becomes increasingly hard to manage as the temperature drops from 21°C (69.8°F) to 15°C (59°F).
Daylight
In Pireas, the average length of the day in May is 14h and 14min.On the first day of May, sunrise is at 06:28 and sunset at 20:16. On the last day of the month, sunrise is at 06:04 and sunset at 20:41 EEST.
Updated: Jan 24, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In May, the average sea temperature in Pireas is 18.5°C (65.3°F). For swimming, a surface water temperature of 18.5°C (65.3°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).
In Pireas, Greece, the average day length in May is 14h and 14min.
In May, on the first day of the month, sunrise is at 06:28 and sunset at 20:16. On the last day of the month, in Pireas, Greece, sunrise is at 06:04 and sunset at 20:41 EEST.
Average sea temperature in May
Pireas, Greece
- Average sea temperature in May: 18.5°C
The best month for swimming (with the highest average sea temperature) is August (26.3°C).
The coldest month (with the lowest average sea temperature) is February (15°C).
Average daylight in May
Pireas, Greece
- Average daylight in May: 14h and 12min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).





