Summer is definitely the most popular time for tourists from around the world to visit Lake Como. Weather in June is known for highs that reach 24°C (75°F) and keep rising until July and August, when temperatures get to 30°C (86°F), sometimes even more.
Don’t worry about these temperature peaks. During summer months, the lake provides cooling to the surrounding territory. But if you really can’t stand the heat, just choose one of Lake Como’s beaches and refresh yourself with a swim in the lake.
The waters of Lake Como exceed 20°C in July, August, and September, making those months the prime time for swimming. Summer showers are not uncommon, so you should be prepared for the chance of getting wet.
Although rainfall is less frequent than in spring, it is indeed more unexpected.