While August is the peak of summer, it is not "hot" in the Dolomites in the way it is in Rome or Florence; rather, the weather is characterized by warm days and cool, crisp nights. At lower elevations in the valleys (like Cortina or Ortisei), daytime temperatures typically range from 20°C to 25°C, which is perfect for hiking. However, once you ascend the peaks or stay in high-altitude mountain huts (rifugi), the temperature can drop significantly. It is common for night-time temperatures at high altitudes to hover around 5°C to 10°C, even in August. Furthermore, the Dolomites are prone to sudden, violent afternoon thunderstorms, which can cause the temperature to plummet by 10 degrees in a matter of minutes. In 2026, the "pro" advice for August travelers is to always pack "layers"—a light t-shirt for the ascent and a windproof or down jacket for the summit and the evening. While you won't experience "winter cold," the mountain air is always fresh, making it a popular escape for those looking to flee the intense heat of the Italian lowlands.