September
Weather in September
Sea temperature
In September, the average sea temperature in Runcorn, United Kingdom, is 16.2°C (61.2°F).Note: Most individuals do not find swimming at 16.2°C (61.2°F) to be enjoyable. As the water temperature declines below 21°C (69.8°F), maintaining control over one's breathing becomes harder.
Daylight
In September, the average length of the day is 12h and 41min.On the first day of September in Runcorn, sunrise is at 6:21 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 6:49 pm BST.
Updated: Jul 11, 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
What is the sea water temperature in September?
In Runcorn, in September, the average water temperature is 16.2°C (61.2°F). For most, swimming in 16.2°C (61.2°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).
What is the average length of the day in September?
In Runcorn, United Kingdom, the average day length in September is 12h and 41min.
What time are sunrise and sunset in September?
In September, on the first day of the month, sunrise is at 6:21 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 6:49 pm BST.
Average sea temperature in September
Runcorn, United Kingdom
- Average sea temperature in September: 16.2°C
The best month for swimming (with the highest average sea temperature) is August (16.7°C).
The coldest months (with the lowest average sea temperature) are February and March (7.4°C).
Average daylight in September
Runcorn, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 36min).
