Cool
Average highs are around 3°C, so pack for cooler days.
January verdict
Central Islip, New York, United States in January
Weather score26Poor
Poor for holiday weather
Average highs are around 3°C, so pack for cooler days. Sunshine averages 5.4h per day, enough for a balanced month. Rainfall averages 93mm, so some wet days are possible.
January weather
Monthly averages
Temp
3°C
Rain
93mm
Sun
5.4h
Sea
6°C
Weather score
26
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 93mm, so some wet days are possible.
Some sun
Sunshine averages 5.4h per day, enough for a balanced month.
Cool sea
Sea temperatures average 6°C, so the water can feel cool.
Map
Weather map
Compare Central Islip, New York, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
January3°C average high
January has some of the coolest average daytime highs of the year, so pack for fresher conditions.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
January93mm average rain
January is close to Central Islip's usual rainfall pattern, with little seasonal change across the year.
Driest monthsAll year
Rainfall stays comparatively low through the year.
Sun
January5.4 hours average sun
January is below Central Islip's yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsApril to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
January6°C average sea
January is one of the coolest sea months, so the water may feel fresher than in peak months.
Warmest seaJuly to September
Sea temperatures are usually near 22°C in this stretch, so swimming comfort is at its strongest.
Weather score
January26 weather score
January is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.
