Cool
Average highs are around 15°C, so pack for cooler days.
April verdict
Poor for holiday weather
Average highs are around 15°C, so pack for cooler days. Sunshine averages 7.8h per day, enough for a balanced month. Rainfall averages 102mm, so some wet days are possible.
Monthly averages
Temp
15°C
Rain
102mm
Sun
7.8h
Sea
8°C
Weather score
31
Poor
Cool
Average highs are around 15°C, so pack for cooler days.
Showers
Rainfall averages 102mm, so some wet days are possible.
Some sun
Sunshine averages 7.8h per day, enough for a balanced month.
Cool sea
Sea temperatures average 8°C, so the water can feel cool.
Map
Compare Central Islip, New York, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
April15°C average high
April is close to Central Islip's yearly temperature average, giving a typical read on daytime heat.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
April102mm average rain
April 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.
April7.8 hours average sun
April is brighter than Central Islip's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsApril to August
This stretch has the strongest sunshine in the monthly averages.
April8°C average sea
April is below Central Islip's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaJuly to September
Sea temperatures are usually near 22°C in this stretch, so swimming comfort is at its strongest.
April31 weather score
April scores below Central Islip's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.