Lake Fortezza — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Fortezza, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Fortezza today is 14.1°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 |
|---|---|---|---|
| SEP 2 | 18.3°C | 18.0°C | |
| SEP 3 | 14.9°C | 18.0°C | |
| SEP 4 | 14.2°C | 18.0°C | |
| SEP 5 | 14.2°C | 18.0°C | |
| SEP 6 | 14.3°C | 18.0°C | |
| SEP 7 | 14.1°C | 18.0°C | |
| SEP 8 | 14.0°C | 18.0°C | |
| SEP 9 | 13.9°C | 18.0°C | |
| SEP 10 | 18.0°C | 14.3°C | |
| SEP 11 | 18.0°C | 14.5°C | |
| SEP 12 | 18.0°C | 14.7°C | |
| SEP 13 | 18.0°C | 14.9°C | |
| SEP 14 | 18.0°C | 15.1°C | |
| SEP 15 | 18.0°C | 15.3°C | |
| SEP 16 | 18.0°C | 15.5°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 | 1°C | 5°C | 8°C |
| February | 1°C | 5°C | 8°C |
| March | 3°C | 7°C | 10°C |
| April | 6°C | 10°C | 14°C |
| May | 8°C | 13°C | 19°C |
| June | 14°C | 20°C | 25°C |
| July | 16°C | 21°C | 26°C |
| August | 16°C | 21°C | 26°C |
| September | 12°C | 18°C | 23°C |
| October | 8°C | 12°C | 15°C |
| November | 4°C | 8°C | 11°C |
| December | 1°C | 5°C | 8°C |
Lake Fortezza: Water Temperature by Location
Lake Fortezza: Weather Forecast
September 10
September 11
September 12
September 13
September 14
Location & Local Information
Lago Fortezza, in Trentino-Alto Adige/Südtirol, is a small alpine/reservoir lake whose water temperature varies strongly with season, weather and depth. In spring the surface water is typically cold, roughly 4–10 °C (39–50 °F) as snowmelt and cooler nights keep the lake chilled. During summer the shallow surface layers warm most and you can expect roughly 15–22 °C (59–72 °F) on warmer days, though deeper water remains cooler. Autumn brings a steady decline, commonly 8–15 °C (46–59 °F) as air temperatures fall, and in winter the lake can approach near‑freezing conditions around 0–4 °C (32–39 °F) or even freeze in particularly cold spells. Local weather, recent rainfall and lake depth will shift these ranges year to year.
Swimming in Lago Fortezza is possible during the warmer months, but whether it is permitted at any given time depends on local rules and signage; many visitors swim in summer because surface temperatures can be pleasant, yet the water can still feel brisk compared with lowland beaches. Restrictions may be imposed for safety, water‑management or conservation reasons, and there are typically no lifeguards, so swimmers should heed posted notices, be aware of sudden cold thermoclines and currents, and use common sense about exposure times in cooler temperatures.