December weather forecastSant Marti, Spain
December
Weather in December
Sea temperature
In Sant Marti, Spain, the average seawater temperature in December is 15.5°C (59.9°F).Note: The majority of individuals find swimming in 15.5°C (59.9°F) to be unenjoyable. The difficulty in controlling breathing rises as the temperature decreases from 21°C (69.8°F) to 15°C (59°F).
Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 07:58 and sunset at 17:22. On the last day of December, in Sant Marti, sunrise is at 08:17 and sunset at 17:31 CET.
Updated: Jan 29, 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 Sant Marti, the average seawater temperature in December is 15.5°C (59.9°F). For most, swimming in 15.5°C (59.9°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).
December has the shortest days of the year, with an average of 9h and 12min of daylight.
In December, the average day length in Sant Marti, Spain, is 9h and 14min.
On the first day of December in Sant Marti, sunrise is at 07:58 and sunset at 17:22. On the last day of the month, sunrise is at 08:17 and sunset at 17:31 CET.
Average sea temperature in December
Sant Marti, Spain
- Average sea temperature in December: 15.5°C
The best month for swimming (with the highest average sea temperature) is August (25.3°C).
The coldest month (with the lowest average sea temperature) is February (13.1°C).
Average daylight in December
Sant Marti, Spain
- Average daylight in December: 9h and 12min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).





