Mild
Average highs are around 23°C, so days are mild rather than hot.
Weather Guide
Basel, Switzerland Average Monthly Weather
Weather score35Poor annual avg
Best months: July, August, June
Across the year, average daytime temperatures are around 14°C, sunshine averages 4.4h per day, and rainfall totals about 809mm.
Annual weather
Annual averages
Temp
14°C
Rain
809mm
Annual total
Sun
4.4h
Weather score
35
Poor avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 107mm, so some wet days are possible.
Some sun
Sunshine averages 6.7h per day, enough for a balanced month.
Map
Weather map
Compare Basel, Switzerland with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August23°C average high
August is one of Basel's warmest months, with daytime heat above the yearly average.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
August107mm average rain
August is one of Basel's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to April and September to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August6.7 hours average sun
August is brighter than Basel'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.
Weather score
August53 weather score
August scores above Basel's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.
