January weather forecastPireas, Greece
January
Weather in January
Sea temperature
In Pireas, Greece, in January, the average water temperature is 15.4°C (59.7°F).Note: Swimming in 15.4°C (59.7°F) is not a pleasurable activity for the majority of people. Breathing becomes increasingly challenging as water temperature descends from 21°C (69.8°F) to 15°C (59°F).
Daylight
The average length of the day in January in Pireas is 9h and 53min.On the first day of January, sunrise is at 07:41 and sunset at 17:16. On the last day of the month, sunrise is at 07:30 and sunset at 17:46 EET.
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 Pireas, Greece, the average seawater temperature in January is 15.4°C (59.7°F). For swimming, a surface water temperature of 15.4°C (59.7°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 January, the average day length is 9h and 53min.
On the first day of January in Pireas, sunrise is at 07:41 and sunset at 17:16. On the last day of the month, sunrise is at 07:30 and sunset at 17:46 EET.
Average sea temperature in January
Pireas, Greece
- Average sea temperature in January: 15.4°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 January
Pireas, Greece
- Average daylight in January: 9h and 54min
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).





