Mild
Average highs are around 20°C, so days are mild rather than hot.
June verdict
Poor for holiday weather
Average highs are around 20°C, so days are mild rather than hot. Sunshine averages 6.2h per day, enough for a balanced month. Rainfall averages 150mm, so some wet days are possible.

Monthly averages
Temp
20°C
Rain
150mm
Sun
6.2h
Weather score
40
Poor
Mild
Average highs are around 20°C, so days are mild rather than hot.
Showers
Rainfall averages 150mm, so some wet days are possible.
Some sun
Sunshine averages 6.2h per day, enough for a balanced month.
Map
Compare Lucerne, Switzerland with nearby places by weather score, rain, sun, temperature, and swim conditions.
June20°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.
June150mm average rain
June is one of Lucerne's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to April and October to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
June6.2 hours average sun
June is brighter than Lucerne's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
June40 weather score
June sits close to Lucerne'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.