Basel is in the north of Switzerland, in the Rhine valley where it intersects with France and Germany. It is at 909 ft. elevation.
Although the climate is temperate, due to it's valley position Basel is known as the warmest spot in Switzerland north of the alps. Rainfall peaks in the summer along with the temperatures.
May through September is a good range of times to go to Basel. Summer temperatures are pleasant, but nights can be on the warm side in July and August. Winters are cold in Basel, and there is little snow.
Summer weather in Basel is mild and known to be rather changeable, so be prepared. It's likely to rain on summer days, so be prepared for showers.
Basel is known for its Fasnacht or carnival held for three days on the Monday after Ash Wednesday, the start of Lent. It's likely to be quite cold then, but "for many ‘Baslers’ and for those who participate in costume during Fasnacht the three days are some of the nicest of the year and a definite highpoint."
The charts below show the historic high and low temperatures and the month by month average precipitation for Basel, Switzerland.
Try refreshing the page if info doesn't appear