Weather in September
Sea temperature
In Llanes, Spain, in September, the average water temperature is 20.3°C (68.5°F).Note: Most people do not take pleasure in swimming in water at 20.3°C (68.5°F). The difficulty of managing breathing increases as the water temperature dips from 21°C (69.8°F) to 15°C (59°F).
Daylight
In September, the average length of the day is 12h and 30min.On the first day of the month, sunrise is at 07:43 and sunset at 20:54. On the last day of September, in Llanes, sunrise is at 08:15 and sunset at 20:01 CEST.
Frequently asked questions
How cold is the water in September in Llanes?
In Llanes, Spain, in September, the average water temperature is 20.3°C (68.5°F). For swimming, a surface water temperature of 20.3°C (68.5°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).
What is the average length of the day in September in Llanes?
In September, the average day length in Llanes, Spain, is 12h and 30min.
When are sunrise and sunset in September in Llanes?
In September, on the first day of the month, sunrise is at 07:43 and sunset at 20:54. On the last day of the month, in Llanes, Spain, sunrise is at 08:15 and sunset at 20:01 CEST.
Average sea temperature in September
Llanes, Spain
- Average sea temperature in September: 20.3°C
The best month for swimming (with the highest average sea temperature) is August (20.9°C).
The coldest months (with the lowest average sea temperature) are February and March (12.8°C).
Average daylight in September
Llanes, Spain
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
Llanes, Spain
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