Cool
Average highs are around 19°C, so pack for cooler days.
June verdict
Mixed for holiday weather
Average highs are around 19°C, so pack for cooler days. Sunshine averages 6.3h per day, enough for a balanced month. Rainfall averages 68mm, which is relatively low for holiday planning.

Monthly averages
Temp
19°C
Rain
68mm
Sun
6.3h
Weather score
47
Mixed
Cool
Average highs are around 19°C, so pack for cooler days.
Drier
Rainfall averages 68mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 6.3h per day, enough for a balanced month.
Map
Compare Rotterdam, Netherlands with nearby places by weather score, rain, sun, temperature, and swim conditions.
June19°C average high
June sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
June68mm average rain
June sits near Rotterdam's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to August
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
June6.3 hours average sun
June is one of Rotterdam'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.
June47 weather score
June scores above Rotterdam's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.