Cool
Average highs are around 15°C, so pack for cooler days.
May verdict
Poor for holiday weather
Average highs are around 15°C, so pack for cooler days. Sunshine averages 7.4h per day, enough for a balanced month. Rainfall averages 44mm, which is relatively low for holiday planning.

Monthly averages
Temp
15°C
Rain
44mm
Sun
7.4h
Sea
10°C
Weather score
33
Poor
Cool
Average highs are around 15°C, so pack for cooler days.
Drier
Rainfall averages 44mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 7.4h per day, enough for a balanced month.
Cool sea
Sea temperatures average 10°C, so the water can feel cool.
Map
Compare Sopot, Poland with nearby places by weather score, rain, sun, temperature, and swim conditions.
May15°C average high
May sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
May44mm average rain
May sits near Sopot's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to May and September to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
May7.4 hours average sun
May is one of Sopot's sunniest months, with some of the strongest bright-day conditions in the yearly averages.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
May10°C average sea
May is close to Sopot's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJuly to September
Sea temperatures are usually near 18°C in this stretch, so swimming comfort is at its strongest.
May33 weather score
May sits close to Sopot's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.