Warm
Average highs sit around 27°C, giving warm days by monthly-average standards.
Weather Guide
Central Islip, New York, United States Average Monthly Weather
Weather score43Mixed annual avg
Best months: July, August, June
Across the year, average daytime temperatures are around 16°C, sunshine averages 7h per day, and rainfall totals about 1144mm. Sea temperatures average 13°C across the year.
Annual weather
Annual averages
Temp
16°C
Rain
1144mm
Annual total
Sun
7h
Sea
13°C
Weather score
43
Mixed avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 101mm, so some wet days are possible.
Bright
Sunshine averages 8.4h per day, so bright days are a strong part of the month.
Swimmable
Sea temperatures average 23°C, which can work for swimming but may feel fresh.
Map
Weather map
Compare Central Islip, New York, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August27°C average high
August is one of Central Islip's warmest months, with daytime heat above the yearly average.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
August101mm average rain
August 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
August8.4 hours average sun
August is one of Central Islip's sunniest months, with some of the strongest bright-day conditions in the yearly averages.
Brightest monthsApril to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
August23°C average sea
August is one of Central Islip's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJuly to September
Sea temperatures are usually near 22°C in this stretch, so swimming comfort is at its strongest.
Weather score
August73 weather score
August is one of Central Islip's best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.
