Search for cities, countries, lakes and rivers
Sea Temperature in Dewey Beach in December
Complete information on the sea temperature range in the Atlantic Ocean in Dewey Beach in December. Historical daily data. Climate details for December. Tips on swimming conditions and beach relaxation in Dewey Beach. 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 Dewey Beach in December
4°C
MINIMUN
8°C
AVERAGE
12°C
MAXIMUM
Historical Data of Water Temperature in December in Dewey Beach
Water Temperature Chart for Atlantic Ocean in Dewey Beach in December
Sea Temperature Table in Dewey Beach in December Over the Past Years
| Day | 2024 | 2023 | 2022 | Average |
|---|---|---|---|---|
| Dec 1 | 12°C | 10°C | 11°C | 10.5°C |
| Dec 2 | 11°C | 10°C | 11°C | 10.3°C |
| Dec 3 | 11°C | 10°C | 11°C | 10.3°C |
| Dec 4 | 10°C | 11°C | 11°C | 10.3°C |
| Dec 5 | 10°C | 10°C | 11°C | 10.0°C |
| Dec 6 | 9°C | 10°C | 11°C | 10.0°C |
| Dec 7 | 9°C | 10°C | 11°C | 10.0°C |
| Dec 8 | 9°C | 9°C | 10°C | 9.8°C |
| Dec 9 | 8°C | 9°C | 9°C | 9.3°C |
| Dec 10 | 8°C | 9°C | 10°C | 9.0°C |
| Dec 11 | 9°C | 9°C | 11°C | 9.8°C |
| Dec 12 | 8°C | 9°C | 10°C | 9.0°C |
| Dec 13 | 9°C | 9°C | 9°C | 9.0°C |
| Dec 14 | 8°C | 9°C | 8°C | 8.5°C |
| Dec 15 | 7°C | 10°C | 9°C | 8.8°C |
| Dec 16 | 8°C | 10°C | 9°C | 9.3°C |
| Dec 17 | 8°C | 9°C | 9°C | 9.0°C |
| Dec 18 | 8°C | 9°C | 8°C | 8.8°C |
| Dec 19 | 8°C | 9°C | 8°C | 8.5°C |
| Dec 20 | 8°C | 9°C | 8°C | 8.3°C |
| Dec 21 | 8°C | 9°C | 8°C | 8.5°C |
| Dec 22 | 8°C | 9°C | 8°C | 8.5°C |
| Dec 23 | 7°C | 7°C | 7°C | 7.5°C |
| Dec 24 | 7°C | 8°C | 7°C | 7.8°C |
| Dec 25 | 7°C | 7°C | 7°C | 7.3°C |
| Dec 26 | 7°C | 8°C | 6°C | 7.3°C |
| Dec 27 | 6°C | 8°C | 6°C | 7.3°C |
| Dec 28 | 6°C | 8°C | 6°C | 7.3°C |
| Dec 29 | 7°C | 8°C | 5°C | 7.3°C |
| Dec 30 | 7°C | 8°C | 5°C | 7.0°C |
Dewey Beach Climate and Swimming Opportunities in December
8°C
Average Day Air Temperature
0°C
Average Night Air Temperature
93 mm
Precipitation Amount per Month
11 days
Number of Rainy Days
9 hrs
Daylight
per Day
5 hrs
Sunshine
per Day
18 km/h
Average Wind Speed
71%
Average
humidity
Dewey Beach lies within the Delaware in United States. The average daytime temperature in Dewey Beach in December is 47°F (8°C), while the nighttime average is 32°F (0°C). There are typically 11 rainy days during the month, with a total precipitation of 3.7 inches (93 mm). The daylight duration in December in Dewey Beach is 9 hours, with an average of 5 hours of sunshine per day. The average wind speed in December is 11 mph (18 km/h), and the humidity level is around 71%.
The water temperature in Dewey Beach in December ranges from 45°F to 52°F (7°C to 11°C). At the beginning of the month, the average temperature is around 50°F (10°C), shifting to 48°F (9°C) by mid-December and reaching 46°F (8°C) in the last ten days. Overall, the average sea temperature in Dewey Beach for December is 48°F (9°C). Still too cold for most swimmers. Only short dips in proper gear are advisable.
Sea Temperature in December in Nearby Cities
Frequently Asked Questions About Water Temperatures in December in Dewey Beach
What is the sea temperature in Dewey Beach in December?
The water temperature in the Atlantic Ocean in Dewey Beach in December ranges from 45°F to 52°F (7°C to 11°C).
Is it possible to swim in the Atlantic Ocean in Dewey Beach in December?
The average sea temperature in Dewey Beach in December is 48°F (9°C), and the air temperature is 47°F (8°C), so still too cold for most swimmers. Only short dips in proper gear are advisable.