When Is the Hottest Season in Alaska?

Alaska's summer is short and mild:

• Season: Late May – early September
• Peak warmth: Late June – mid-August
• Average daytime highs: 55–70°F (13–21°C)

Winter (early Oct – late Apr) is long, dark, and cold. "Hottest" is relative—even in summer, nights can be cool, and coastal areas stay cooler than interior (Fairbanks can hit 80–90°F).