Best time to visit Basel is between Mid May and End of June, Mid August to End of October.
Basel is one of the warmest places in Switzerland. Since it’s located in the Rhine Valley, the weather in Basel is warmer when compared with the rest of the Alpine cities of Switzerland.
January is the city’s coldest month and June, the warmest. The peak tourist season is from May to October. Nights during the summer can get a little unbearably hot; the winter on the other hand, seldom sees snow.
Highest temperature in Basel is recorded as 91.4℉ in June and July.
Lowest temperature in Basel is recorded as 12.2℉ in January.
Maximum rain recorded in Basel is 614.72 mm in June.
Months with no rains or lowest rains in Basel is December.