Cool
Average highs are around 19°C, so pack for cooler days.
May verdict
Mixed for holiday weather
Average highs are around 19°C, so pack for cooler days. Sunshine averages 8.4h per day, so bright days are a strong part of the month. Rainfall averages 88mm, so some wet days are possible.
Monthly averages
Temp
19°C
Rain
88mm
Sun
8.4h
Sea
12°C
Weather score
42
Mixed
Cool
Average highs are around 19°C, so pack for cooler days.
Showers
Rainfall averages 88mm, so some wet days are possible.
Bright
Sunshine averages 8.4h per day, so bright days are a strong part of the month.
Cool sea
Sea temperatures average 12°C, so the water can feel cool.
Map
Compare Riverhead, New York, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
May19°C average high
May is close to Riverhead'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.
May88mm average rain
May sits near Riverhead's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to February, April to July, and September to October
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
May8.4 hours average sun
May is brighter than Riverhead'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.
May12°C average sea
May is close to Riverhead's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJuly to October
Sea temperatures are usually near 22°C in this stretch, so swimming comfort is at its strongest.
May42 weather score
May sits close to Riverhead's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.