Lago di Lei
Monastery High-altitude reservoir straddling Swiss-Italian border
An alpine reservoir in Grisons created by a high mountain dam, Lago di Lei draws hikers and anglers to remote trails, scree slopes and quiet mountain water.
Lago di Lei is a high-altitude reservoir in the Alps on the border between Switzerland and Italy, administratively associated with the canton of Graubünden (Grisons) on the Swiss side. The lake was created for hydropower and water storage.
The reservoir occupies a mountain valley and is ringed by alpine peaks and steep valley sides typical of the region. Access and infrastructure are oriented around the dam and associated service roads.
The lake was formed when a dam was built to create a hydropower reservoir; the installation is operated as part of regional power systems and water management.
Geographically it lies in the Grisons region of eastern Switzerland near the international border with Italy, at high elevation in the Alpine massif.
- Cross-border reservoir: Sits on the Switzerland-Italy border and is a high-altitude hydroelectric reservoir used for power generation and water storage.
Best Time to Visit Lago di Lei #
The best time to visit Lago di Lei is summer, when alpine roads are most likely open and the mountain scenery is accessible.
Weather & Climate near Lago di Lei #
Lago di Lei's climate is classified as Subarctic - Subarctic climate with cool summers (peaking in July) and freezing winters (coldest in January). Temperatures range from -10°C to 15°C. Abundant rainfall (1407 mm/year), wettest in June.
January
January is the coldest month with highs of -1°C and lows of -10°C. Regular rainfall (81 mm) and partly cloudy skies.
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February
February is the coldest month with highs of -1°C and lows of -10°C. Moderate rainfall (59 mm) and partly cloudy skies.
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March
March is freezing with highs of 1°C and lows of -8°C. Regular rainfall (85 mm) and partly cloudy skies.
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April
April is freezing with highs of 3°C and lows of -4°C. Significant rainfall (120 mm) and mostly overcast skies.
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May
May is cold with highs of 8°C and lows of 0°C. Significant rainfall (142 mm) and mostly overcast skies.
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June
June is cold with highs of 12°C and lows of 3°C. The wettest month with heavy rain (152 mm) and mostly overcast skies.
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July
July is cool with highs of 15°C and lows of 5°C. Significant rainfall (146 mm) and partly cloudy skies.
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August
August is cool with highs of 15°C and lows of 5°C. Significant rainfall (149 mm) and partly cloudy skies.
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September
September is cold with highs of 12°C and lows of 2°C. Significant rainfall (147 mm) and partly cloudy skies.
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October
October is cold with highs of 7°C and lows of -1°C. Significant rainfall (137 mm) and partly cloudy skies.
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November
November is freezing with highs of 2°C and lows of -6°C. Significant rainfall (108 mm) and partly cloudy skies.
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December
December is freezing with highs of -1°C and lows of -9°C. Regular rainfall (81 mm) and partly cloudy skies.
