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Sea Temperature in Formia in December
Complete information on the sea temperature range in the Mediterranean Sea in Formia in December. Historical daily data. Climate details for December. Tips on swimming conditions and beach relaxation in Formia. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.
Water Temperature Range in Formia in December
12°C
MINIMUN
16°C
AVERAGE
20°C
MAXIMUM
Historical Data of Water Temperature in December in Formia
Water Temperature Chart for Mediterranean Sea in Formia in December
Sea Temperature Table in Formia in December Over the Past Years
Day | 2024 | 2023 | 2022 | Average |
---|---|---|---|---|
Dec 1 | 19°C | 19°C | 18°C | 18.5°C |
Dec 2 | 19°C | 18°C | 18°C | 18.5°C |
Dec 3 | 19°C | 18°C | 18°C | 18.3°C |
Dec 4 | 18°C | 19°C | 18°C | 18.5°C |
Dec 5 | 19°C | 18°C | 18°C | 18.3°C |
Dec 6 | 19°C | 18°C | 18°C | 18.3°C |
Dec 7 | 19°C | 18°C | 18°C | 18.0°C |
Dec 8 | 18°C | 18°C | 18°C | 17.8°C |
Dec 9 | 18°C | 18°C | 18°C | 17.8°C |
Dec 10 | 18°C | 18°C | 18°C | 17.8°C |
Dec 11 | 18°C | 18°C | 17°C | 17.5°C |
Dec 12 | 18°C | 18°C | 17°C | 17.5°C |
Dec 13 | 18°C | 18°C | 17°C | 17.5°C |
Dec 14 | 18°C | 17°C | 17°C | 17.3°C |
Dec 15 | 18°C | 18°C | 18°C | 17.8°C |
Dec 16 | 18°C | 17°C | 17°C | 17.3°C |
Dec 17 | 17°C | 17°C | 17°C | 17.0°C |
Dec 18 | 17°C | 17°C | 17°C | 17.3°C |
Dec 19 | 18°C | 17°C | 17°C | 17.3°C |
Dec 20 | 17°C | 17°C | 17°C | 16.8°C |
Dec 21 | 18°C | 17°C | 17°C | 17.0°C |
Dec 22 | 18°C | 17°C | 16°C | 16.8°C |
Dec 23 | 18°C | 17°C | 16°C | 17.0°C |
Dec 24 | 17°C | 16°C | 16°C | 16.3°C |
Dec 25 | 17°C | 17°C | 17°C | 16.8°C |
Dec 26 | 17°C | 17°C | 16°C | 16.5°C |
Dec 27 | 17°C | 17°C | 16°C | 16.5°C |
Dec 28 | 17°C | 17°C | 16°C | 16.5°C |
Dec 29 | 16°C | 16°C | 16°C | 16.0°C |
Dec 30 | 17°C | 16°C | 16°C | 16.3°C |



Formia Climate and Swimming Opportunities in December
13°C
Average Day Air Temperature
5°C
Average Night Air Temperature
114 mm
Precipitation Amount per Month
11 days
Number of Rainy Days
9 hrs
Daylight
per Day
3 hrs
Sunshine
per Day
13 km/h
Average Wind Speed
78%
Average
humidity
Formia lies within the Lazio in Italy. The average daytime temperature in Formia in December is 13°C (56°F), while the nighttime average is 5°C (40°F). There are typically 11 rainy days during the month, with a total precipitation of 114 mm (4.5 inches). The daylight duration in December in Formia is 9 hours, with an average of 3 hours of sunshine per day. The average wind speed in December is 13 km/h (8 mph), and the humidity level is around 78%.
The water temperature in Formia in December ranges from 16°C to 18°C (61°F to 64°F). At the beginning of the month, the average temperature is around 18°C (64°F), shifting to 17°C (63°F) by mid-December and reaching 17°C (63°F) in the last ten days. Overall, the average sea temperature in Formia for December is 17°C (63°F).
Sea Temperature in December in Nearby Cities
Frequently Asked Questions About Water Temperatures in December in Formia
What is the sea temperature in Formia in December?
The water temperature in the Mediterranean Sea in Formia in December ranges from 16°C to 18°C (61°F to 64°F).
Is it possible to swim in the Adriatic Sea in Trieste in December?
The average sea temperature in Trieste in December is 14°C (57°F), and the air temperature is 8°C (46°F), so the water is still cold, but for short swims, it can be manageable. Warm clothes are necessary after swimming.