In terms of precipitation, rainfall in Basel ranges from 49.0 - 87.0 inches per month. June is typically the wettest month, when rainfall can reach 87.0 mm. February is typically the driest time to visit Basel when rainfall is around 49.0 mm.
If weather is an important factor for your trip to Basel, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 1.0 C).