Lac de Pormenaz — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lac de Pormenaz, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lac de Pormenaz today is 14.5°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 54°F (12°C) to 60°F (15°C). The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear. It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| JUL 15 | 15.1°C | 13.0°C | |
| JUL 16 | 15.1°C | 13.0°C | |
| JUL 17 | 15.1°C | 13.0°C | |
| JUL 18 | 15.1°C | 13.0°C | |
| JUL 19 | 15.0°C | 13.0°C | |
| JUL 20 | 14.8°C | 13.0°C | |
| JUL 21 | 14.8°C | 13.0°C | |
| JUL 23 | 13.0°C | 14.4°C | |
| JUL 24 | 13.0°C | 14.4°C | |
| JUL 25 | 13.0°C | 14.3°C | |
| JUL 26 | 13.0°C | 14.2°C | |
| JUL 27 | 13.0°C | 14.1°C | |
| JUL 28 | 13.0°C | 14.1°C | |
| JUL 29 | 13.0°C | 14.0°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 0°C | 0°C | 4°C |
| February | 0°C | 0°C | 3°C |
| March | 0°C | 3°C | 6°C |
| April | 0°C | 4°C | 8°C |
| May | 2°C | 7°C | 12°C |
| June | 6°C | 11°C | 17°C |
| July | 8°C | 13°C | 19°C |
| August | 8°C | 13°C | 19°C |
| September | 5°C | 10°C | 15°C |
| October | 3°C | 7°C | 10°C |
| November | 0°C | 3°C | 6°C |
| December | 0°C | 0°C | 4°C |
Lac de Pormenaz: Water Temperature by Location
Location & Local Information
Lac de Pormenaz, located in the French Alps near Passy in Haute-Savoie, is a beautiful high-altitude lake set at about 1,945 meters (6,381 feet) above sea level. Surrounded by rocky terrain and alpine meadows, it’s a popular destination for hikers seeking a remote and picturesque spot. Due to its altitude, the lake's water temperature remains quite cool even during summer, usually ranging from 10 to 15°C (50–59°F). This temperature provides a bracing experience, making swimming here more suited for a quick, refreshing dip rather than extended swimming sessions.
Swimming in Lac de Pormenaz is possible but not widely practiced due to the cold water and the lack of amenities or lifeguard supervision. Swimmers who are comfortable with the chilly temperature enjoy the lake as a peaceful and secluded spot to cool off after a hike. However, given its natural environment, swimmers should be cautious and well-prepared for the alpine conditions. The lake is an ideal destination for adventurous visitors who appreciate serene surroundings and don’t mind the brisk water temperature.