September in the Dolomites typically offers a transition from summer to autumn. Expect daytime temperatures ranging from pleasantly warm in the valleys to cooler at higher elevations. Nights become noticeably colder, often dipping below freezing point, especially at altitude. Sunshine is common, but periods of rain or even early snowfall are possible. This variability makes layering essential for comfortable exploration.
Understanding the prevalent climatic conditions during this month is crucial for planning any activities, from hiking and climbing to simply enjoying the scenic beauty. Adequate preparation based on expected conditions ensures safety and maximizes enjoyment of the stunning alpine landscape. Historically, September has marked the end of the main tourist season, offering a quieter experience combined with vibrant autumnal colors as the larch trees turn golden.