Lake Garda is Italy’s largest body of water, situated in northern Italy between Venice and Milan. The lake is hugged by charming, picturesque towns that guarantee delicious food, unique shops, and cafes that radiate romance and elegance. A must-visit city in Lake Garda is Sirmione, known for the breathtaking Scaligero Castle, magical thermal The water in Lake Garda is still warm in September, and many people enjoy swimming and water sports during this time. The average water temperature is around 22°C (72°F), which is quite pleasant. 4. Late September to early June. In general, the high season in Lake Como, Garda Maggiore and the other lakes is summer-specific: from mid-June to mid-September. Of course, the closer to the winter you come, the more of an “off season” it will really be!). Snow-capped mountains over Lake Garda… one of the perks of coming in the off season! One of the main attractions of this lake is an idyllic forested island in the middle which splits the lakes into two parts. In addition to its natural beauty, the lake is also known as the warmest lake in southern Austria. The water temperatures in the summer months reach up to 26C (78F). Swimming-In-Faaker-See-Lake-Austria 3. Lake Garda: Italy Temperature In September, the average high-temperature marginally drops from a pleasant 22.4°C (72.3°F) in August to an enjoyable 18.3°C (64.9°F). In September, in Riva del Garda, the average low-temperature is 10.4°C (50.7°F). Humidity The average relative humidity in September in Riva del Garda is 80%. Rainfall In Riva del Garda, during Water temperature in Wolfgangsee today is 4°C. Based on our historical data over a period of ten years, the warmest water in this day in Wolfgangsee was recorded in 2023 and was 8°C, and the coldest 3°C. Water temperature in Wolfgangsee is expected to drop to 3.3°C in the next 10 days. AVERAGE AIR TEMPERATURE IN SEPTEMBER: 18°C/20°C AVERAGE WATER TEMPERATURE IN SEPTEMBER: 18.5°C Weather in September The first month of the autumn, September, is still a comfortable month in Riva del Garda, Italy, with an average temperature varying between 10.4°C (50.7°F) and 18.3°C (64.9°F). Temperature In September, the average high Lake surface water temperatures have increased worldwide at a global average rate of 0.34 °C Resolution adopted by the General Assembly on 25 September 2015. 21 October 2015 A/RES/70/1 (2016) HQDeal.