September
Weather in September
Sea temperature
The month with the warmest seawater in Pwllheli, United Kingdom, is September, with an average sea temperature of 15.7°C (60.3°F).Note: Swimming is not enjoyable for most people in water that is 15.7°C (60.3°F). As the temperature descends from 21°C (69.8°F) to 15°C (59°F), breathing control becomes harder.
Daylight
The average length of the day in September in Pwllheli is 12h and 40min.On the first day of September in Pwllheli, sunrise is at 6:28 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 6:56 pm BST.
Updated: Feb 8, 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
When is the sea warmest in Pwllheli?
September is the month with the warmest seawater, with an average sea temperature of 15.7°C (60.3°F).
How cold is the water in September in Pwllheli?
In Pwllheli, United Kingdom, the average seawater temperature in September is 15.7°C (60.3°F). Swimming in 15.7°C (60.3°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).
What is the average length of the day in September in Pwllheli?
In Pwllheli, the average day length in September is 12h and 40min.
When are sunrise and sunset in September in Pwllheli?
In September, on the first day of the month, sunrise is at 6:28 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 6:56 pm BST.
Average sea temperature in September
Pwllheli, United Kingdom
- Average sea temperature in September: 15.7°C
The best month for swimming (with the highest average sea temperature) is September (15.7°C).
The coldest months (with the lowest average sea temperature) are February and March (8.3°C).
Average daylight in September
Pwllheli, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 48min).
The month with the shortest days is December (Average daylight: 7h and 42min).
