In terms of precipitation, rainfall in Carcassonne ranges from 1.1 - 2.9 inches per month. April is typically the wettest month, when rainfall can reach 2.9 in. July is typically the driest time to visit Carcassonne when rainfall is around 1.1 in.
If weather is an important factor for your trip to Carcassonne, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 42.8 F).
The Languedoc region is blessed with a Mediterranean climate – hot, dry weather from June to August with rain setting in from December through February. The area typically experiences about 300 sunny days a year.
Peak Season:
April to September is peak season in Carcassonne. This is when most tourists throng the medieval city and when most visitors with nearby second homes arrive.
Off Season:
October to March is the low season. Some attractions have shorter opening hours during these months.
Carcassonne’s medieval city is small enough that you can easily walk around. But for the rest of the city, you may want to take the bus, which is efficient and reasonably priced. Buy a transport pass for the entire day or just for an hour – it gives you unlimited rides over the entire transport system.