Cool
Average highs are around 18°C, so pack for cooler days.
September verdict
Poor for holiday weather
Average highs are around 18°C, so pack for cooler days. Sunshine averages 4.9h per day, so this is not one of the brighter months. Rainfall averages 47mm, which is relatively low for holiday planning.

Monthly averages
Temp
18°C
Rain
47mm
Sun
4.9h
Sea
17°C
Weather score
37
Poor
Cool
Average highs are around 18°C, so pack for cooler days.
Drier
Rainfall averages 47mm, which is relatively low for holiday planning.
Limited sun
Sunshine averages 4.9h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 17°C, so the water can feel cool.
Map
Compare Szczecin, Poland with nearby places by weather score, rain, sun, temperature, and swim conditions.
September18°C average high
September 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.
September47mm average rain
September sits near Szczecin's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to May and August to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
September4.9 hours average sun
September sits close to Szczecin's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
September17°C average sea
September sits in the warmer sea-temperature season, usually making swimming easier to enjoy.
Warmest seaJune to September
Sea temperatures are usually near 16°C in this stretch, so swimming comfort is at its strongest.
September37 weather score
September sits close to Szczecin'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.