Temperature
Cold by day, cold at night.
45°Ftypical December high
Typical range
December climate
December in Southampton
United States · Northeast US
Cold weather and wind on exposed beaches are the main limitations.
Some tradeoffs
Daytime high
45°F
Lows around 38°F
Rain
Several rainy days
Sun
6 h/day
Air feel
Very dry
Sea temp
52°F
Too cold for swimming
Wind
16 mph
Windy
When to visit
Month-by-month fit
Best
Precipitation
Several rainy days. About 12 wet days, the highest monthly average.
39%wet-day frequency
AmountWet-day chance
Sunshine
A mix of sunshine and cloud.
5.9 hDecember sunshine
Heat & humidity by month
Humidity is rarely noticeable in the cool air.
Very dryDecember Heat feel
Easy airWarm airHumid airVery humid air
Hourly temperature pattern
In December, afternoons feel about 30° and nights feel near 27°.
FreezingVery coldColdCoolComfortableNight hours
Clear sky
Mostly cloudy skies this month.
39%December Clear sky
Clear skyCloud
Wind pattern
Wind can affect exposed beach comfort.
16 mphDecember Windy
Sea temperature
52°FDecember sea temp
More detailIncludes daypart comfort
Typical December day
December late afternoons are around 42°F, and early evening stays near 42°F.
Avg temp Typical range
Morning40°F
Rain17%
Cloud61%
Humid airLow
Sun intensityLow
Midday41°F
Rain17%
Cloud63%
Humid airLow
Sun intensityLow
Late afternoon42°F
Rain17%
Cloud63%
Humid airLow
Sun intensityMinimal
Best windowEarly evening42°F
Rain18%
Cloud59%
Humid airLow
Sun intensityMinimal
Data tableView month-by-month numbers
View month-by-month numbers
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% | Sea°F |
|---|---|---|---|---|---|---|---|
| Jan | 39 | 31 | 4.3 | 11 | 6.5 | 71 | 47 |
| Feb | 39 | 31 | 3.9 | 10 | 7.5 | 71 | 44 |
| Mar | 43 | 36 | 4.8 | 10 | 8.5 | 72 | 45 |
| Apr | 50 | 44 | 4.3 | 11 | 9.6 | 77 | 48 |
| May | 58 | 52 | 4.0 | 11 | 10.5 | 82 | 56 |
| Jun | 68 | 62 | 3.5 | 9 | 11.5 | 84 | 65 |
| Jul | 75 | 70 | 3.1 | 8 | 12.1 | 82 | 73 |
| Aug | 75 | 70 | 3.6 | 9 | 11.3 | 80 | 75 |
| Sep | 71 | 66 | 4.1 | 9 | 9.6 | 77 | 72 |
| Oct | 62 | 56 | 5.2 | 10 | 8.2 | 73 | 65 |
| Nov | 53 | 46 | 3.8 | 9 | 6.7 | 70 | 58 |
| Dec | 45 | 38 | 5.3 | 12 | 5.9 | 71 | 52 |
Similar climates
Similar
Similar travel styleCape MayUnited StatesSimilar travel styleEast HamptonUnited StatesSimilar travel styleMartha's VineyardUnited StatesSimilar travel styleMontaukUnited States
Want a side-by-side climate view? Compare Southampton with Cape May.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jul 31, 2026
Data & methodology