Lake Kaltern
Located in the heart of the South Tyrolean Alps, Lake Kaltern offers a holiday of superlatives. While the surrounding mountains invite you to go hiking and cycling, its crystal-clear water provides a fantastic backdrop for water sports. Its temperatures are anything but cold: up to 28 degrees are possible in this bathing paradise. Who needs the sea?
A lake of superlatives: facts & figures
- Lake Kaltern is located at 216 metres above sea level in Italy, just 14 km from Bolzano.
- Its Italian name is Lago di Caldaro.
- With an area of 147 hectares, it is the largest natural bathing lake in South Tyrol
- The 7.5 km circular route takes about 90 minutes.
- The average depth is 4 metres, the maximum 5.6 metres.
- The water temperature can reach up to 28 degrees. The bathing season lasts from May to September.
Largest natural & warmest bathing lake in South Tyrol
Lake Kaltern was formed during the last ice age from an old riverbed of the Etsch river (Adige in Italian. Its emerald green water not only impresses with its excellent quality, but can also reach record temperatures in summer. Together with Lake Klopeiner See in Carinthia, this makes it the warmest bathing lake in the Alps.
The bathing season starts in May and ends in September.
Nature reserve on the southern shore
On the southern shore is the Lake Kaltern biotope, a habitat for birds and marshland animals. This nature reserve can be discovered on a nature discovery trail.
In spring and autumn in particular, many migratory birds make a stopover in this reed bed on their long journey to or from the south. These include ospreys, cranes and cormorants. More than a hundred different bird species have already been spotted.
Directly on the Wine Route
Lake Kaltern lies at the southern end of the South Tyrolean Wine Route. When visiting the area, don't miss out on a glass of Kaltern wine with the designation of origin Kalterersee Classico Superiore DOC, which is grown in the surrounding vineyards. It is made from the Vernatsch grape and has a controlled designation of origin.
If you want to learn more about the cultural history of wine, you should visit the South Tyrolean Wine Museum. After all, the proof of the pudding is in the eating, so a wine tasting at a winegrower's is a must.
Activities around Lake Kaltern
From swimming fun and hiking to sporting and cultural events, Lake Kaltern has something special to offer at any time of year. Active sports enthusiasts as well as nature and wine lovers will get their money's worth.
Mild temperatures already in spring
Much earlier than in the northern parts of Europe, the thermometer starts to climb again in South Tyrol. The best way to explore the spring awakening is on walks through the vineyards, bike tours or hikes in the countryside. The so-called Spring Valley is a particular highlight: the first harbingers of spring can be discovered there as early as February and March.
The mild climate is already favourable for major sporting events. Every year in May, the Lake Kaltern Triathlon is held, in which athletes compete in a 1.5 km swim, 40 km bike ride and 10 km run.
Water sports & (sun)bathing in summer
Sunshine galore on Lake Kaltern: summer days can be enjoyed to the full in, on and beside the water. Water sports such as sailing, windsurfing and kayaking are just waiting to be tried out. The south wind Ora offers ideal conditions for this at midday.
The water is warmer than at any other time and is perfect for swimming.
Those looking to cool off on the mountains rather than in the water don't have to break a sweat: The Mendel funicular railway takes guests up to over 1,360 metres in less than 15 minutes. The panoramic view over the Etschtal Valley and Southern South Tyrolean is breathtaking.
There is also plenty on offer culturally: For more than 20 years, the Lake Stage Performance has been attracting international and national stars to the lake stage. A backdrop that you won't forget in a hurry.
Autumn hikes & grape harvest
The midsummer temperatures are over. Outdoor activities are once again more possible during the day. While the extensive network of cycle and mountain bike trails makes cyclists' hearts beat faster, hiking enthusiasts can enjoy forays through the colourful forests of the mountains. The hike along old, partly paved Roman paths in the Rastenbachklamm gorge in the Altenburg Forest is particularly beautiful, where you can explore the remains of historical ruins.
For a whole week, everything is centred around wine: the Kaltern Wine Days offer the opportunity to taste the grape juice from the surrounding vineyards.
Christmas markets
Far away from the stress, the idyllic Christmas market in Kaltern offers tradition, customs and, of course, mulled wine. The Krampus, typical of mountain regions, and a visit from St. Nicholas are a must!
Not just a bad weather programme: wellness
The region around Lake Kaltern is not only an outdoor paradise, but also a place of peace and relaxation. In Merano, about 40 minutes away, everyone can unwind in the diverse sauna and pool landscape of the thermal park. There are also many different wellness hotels with their own spa area around Lake Kaltern.
Small & individual accommodation
On the vineyards and around the shores of Lake Kaltern, there are mainly smaller and family-run accommodations. Great importance is attached to family friendliness.
Architecturally, these hotels, B&Bs and guesthouses blend unobtrusively into the landscape. For most of them, the regional connection is very important, which is also reflected in the cuisine and, of course, the wines on offer.
In addition to their own pool, most hotels also offer free entry to either a private lake access or a lido.
Other places & sights in the environs
- Bozen: discover the capital of South Tyrol, just 14 kilometres away
- Runkelstein Castle: ‘picture castle’ from the 13th century
- Mendelbahn: climb 850 metres in altitude on one of the steepest funicular railways in Europe
- Montiggl Lakes: a natural jewel away from the tourist hotspots
- Dolomites: marvel at the Three Peaks on a day trip
Frequently asked questions
Where is Lake Kaltern located?
Nestled between vineyards, forests and reeds, Lake Kaltern can be found in the South Tyrolean Alps directly on the Wine Route. It lies in a deep depression between the Mendel Mountains in the west and the Mitterberg in the east in Italy.
Is Lake Kaltern a bathing lake?
The warm water temperatures and excellent water quality make Lake Kaltern a popular natural swimming lake. Due to its shallow depth, it is very suitable for families with children.
How warm is the water at Lake Kaltern?
Average water temperature by month:
Month |
Temperature |
May | approx. 19 °C |
June |
approx. 23 °C |
July |
approx. 25 °C |
August |
approx. 24 °C |
September |
approx. 22 °C |
Can you swim for free at Lake Kaltern?
A small wooden jetty north of the LIDO restaurant in St. Josef am See is ideal for a quick dip in the cold water. For a whole day of swimming, one of the lidos offers more comfort.
How deep is Lake Kaltern?
With an average depth of 4 metres, Lake Kaltern is one of the shallower bodies of water. In spring, however, it warms up particularly easily, making it one of the warmest bathing lakes in the Alps.
How long is the walk around Lake Kaltern?
There is a 7.5 km long path around the lake. It takes about 90 minutes to walk around the lake.
Can you hike around Lake Kaltern?
From easy to medium to difficult hiking routes: In the area between the municipalities of Kaltern and Tramin, there is a suitable hiking trail for every level.
How high are the mountains on Lake Kaltern?
The lake is located on the southern side of the Alps. In its immediate vicinity there are mountains over 2,000 metres above sea level, such as the Roen.