Atlantic City weather in December
Temperature, sea and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Poor
Best time to visit: July – September
What is the weather like in Atlantic City in December?
In December, Atlantic City is cold: daytime highs average 8 °C, and nights cool down to about 2 °C. The sea averages 9.0 °C – swimming is only for the hardy. Expect around 4 hours of sunshine a day. Rain is frequent, with about 9 rainy days and 102 mm in total. All in all, December is not an ideal month for a holiday in Atlantic City.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 22 | 17 | 19 |
| Day | 13° | 8° | 5° |
| Night | 7° | 2° | −1° |
| Sea | 14° | 9° | 6° |
| Sun | 5 h | 4 h | 5 h |
| Rain days | 8 | 9 | 9 |
More details for December
- Daylight
- 9 h 25 min07:10 – 16:35
- UV index
- 2 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 23 km/haverage daily peakAll months
- Cloud cover
- 57 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 1 day1 cm or more of fresh snowAll months
- Time zone
- UTC−5America/New_York
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %0 %
- Sunshineweight 20 %23 %
- Few rainy daysweight 20 %63 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in December
- Warm jacket
- Rain jacket or umbrella
Atlantic City in December: quick answers
Is Atlantic City hot in December?
No. In December, Atlantic City is cold: daytime highs average 8 °C and nights drop to about 2 °C.
Can you swim in Atlantic City in December?
Only if you don't mind cold water: in December the sea averages just 9.0 °C. Comfortable swimming is possible from July to September.
Does it rain much in Atlantic City in December?
Rain is frequent, with about 9 rainy days and 102 mm in total.
Atlantic City month by month
The whole year in Atlantic CityAll destinations: USAWhere to go in DecemberSea temperature in December
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences