Temperature
Cold by day, freezing at night.
40°Ftypical January high
Typical range
January climate
January in Fire Island
United States · Northeast US
Cold weather is the main limitation.
Limited, but doable
Daytime high
40°F
Lows around 31°F
Rain
Several rainy days
Sun
6.5 h/day
Air feel
Very dry
Sea temp
42°F
Too cold for swimming
When to visit
Month-by-month fit
Best
Precipitation
Several rainy days. About 10 wet days this month.
32%wet-day frequency
AmountWet-day chance
Sunshine
A mix of sunshine and cloud.
6.6 hJanuary sunshine
Heat & humidity by month
Humidity is rarely noticeable in the cool air.
Very dryJanuary Heat feel
Easy airWarm airHumid airVery humid air
Hourly temperature pattern
In January, afternoons feel about 25° and nights feel near 21°.
FreezingVery coldColdCoolComfortableWarmNight hours
Clear sky
Partly cloudy skies this month.
42%January Clear sky
Clear skyCloud
Wind pattern
Breezy January days can feel brisker in open spots.
13 mphJanuary Breezy
Sea temperature
42°FJanuary sea temp
More detailIncludes daypart comfort
Typical January day
January late afternoons are around 37°F, and early evening stays near 36°F.
Avg temp Typical range
Morning33°F
Rain16%
Cloud57%
Humid airLow
Sun intensityLow
Midday36°F
Rain16%
Cloud61%
Humid airLow
Sun intensityModerate
Late afternoon37°F
Rain16%
Cloud60%
Humid airLow
Sun intensityMinimal
Early evening36°F
Rain15%
Cloud57%
Humid airLow
Sun intensityMinimal
Best windowData tableView month-by-month numbers
View month-by-month numbers
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% | Sea°F |
|---|---|---|---|---|---|---|---|
| Jan | 40 | 31 | 3.9 | 10 | 6.6 | 70 | 42 |
| Feb | 40 | 31 | 3.6 | 10 | 7.5 | 69 | 39 |
| Mar | 46 | 36 | 4.5 | 11 | 8.5 | 69 | 40 |
| Apr | 54 | 45 | 4.0 | 11 | 9.5 | 71 | 45 |
| May | 62 | 54 | 3.7 | 11 | 10.4 | 76 | 54 |
| Jun | 72 | 65 | 3.6 | 10 | 11.5 | 78 | 66 |
| Jul | 78 | 72 | 3.5 | 10 | 12.1 | 78 | 75 |
| Aug | 78 | 71 | 3.7 | 10 | 11.3 | 77 | 76 |
| Sep | 72 | 65 | 3.9 | 9 | 9.6 | 76 | 72 |
| Oct | 63 | 55 | 4.7 | 10 | 8.2 | 73 | 64 |
| Nov | 54 | 46 | 3.4 | 9 | 6.9 | 69 | 56 |
| Dec | 45 | 37 | 4.9 | 11 | 5.9 | 71 | 48 |
Similar climates
Similar
Similar travel styleLong Beach IslandUnited StatesSimilar travel styleMartha's VineyardUnited StatesSimilar travel styleNantucketUnited StatesSimilar travel styleCape MayUnited States
Want a side-by-side climate view? Compare Fire Island with Long Beach Island.
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