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Haidersee — Current Water Temperature, Annual Trends and Forecast

This page provides information on the current water temperature in Haidersee, trends, monthly ranges and the forecast for the coming days.

Reschensee, Italy
Reschensee, Italy © By Noclador, CC BY-SA 4.0

Current Water Temperature

18.9°C
Today
19.1°C
Yesterday
19.6°C
A Week Ago
Get instant access to real-time water temperatures for this and all other locations with our iOS and Android apps.

Water Temperature in Haidersee today is 18.9°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming. 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

From June 22 to July 23

Table of Daily Sea Temperature Data

Date Current Average Forecast
JUL 1619.6°C17.0°C
JUL 1719.8°C17.0°C
JUL 1819.9°C17.0°C
JUL 1919.9°C17.0°C
JUL 2019.9°C17.0°C
JUL 2119.7°C17.0°C
JUL 2219.1°C17.0°C
JUL 2319.0°C17.0°C
JUL 2417.0°C18.8°C
JUL 2517.0°C18.7°C
JUL 2617.0°C18.6°C
JUL 2717.0°C18.5°C
JUL 2817.0°C18.4°C
JUL 2917.0°C18.3°C
JUL 3017.0°C18.2°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
January0°C0°C4°C
February0°C0°C4°C
March0°C3°C6°C
April3°C7°C10°C
May4°C9°C14°C
June10°C15°C21°C
July11°C17°C22°C
August11°C17°C22°C
September8°C13°C19°C
October4°C8°C11°C
November0°C4°C7°C
December0°C0°C4°C

Haidersee: Water Temperature by Location

Haidersee: Weather Forecast

July 24

° / °
partly cloudy
rain: 0% | wind:

July 25

° / °
slight thunderstorm
rain: 84% | wind:

July 26

° / °
slight rain showers
rain: 63% | wind:

July 27

° / °
overcast
rain: 18% | wind:

Location & Local Information

Haidersee (Lago della Muta) is a small alpine lake in the Val Venosta/Valle di Mazia area of Trentino-Alto Adige/Südtirol. Because it sits at high elevation and is fed by mountain streams, its water temperatures show clear seasonal swings: in late spring (May–June) surface temperatures are commonly around 4–12 °C (39–54 °F), in summer (July–August) they typically rise to roughly 15–22 °C (59–72 °F) on warm days, and in autumn (September–October) they fall back to about 8–15 °C (46–59 °F). In winter the lake often approaches freezing and may ice over, with surface temperatures at or below 0 °C (32 °F) during cold spells.

Swimming in Haidersee is generally allowed and occasionally popular in the warmest months, but conditions differ from lowland bathing spots. The alpine setting and relatively low summer maxima mean the water stays cool even in July and August, so swimmers should be prepared for brisk temperatures and brief exposure to avoid hypothermia. There are no universal lifeguard services around the lake, and local rules or seasonal restrictions (for conservation or safety) can apply, so visitors are advised to check signage and exercise caution, especially when water is cold or the weather changes quickly.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Haidersee?
Water Temperature in Haidersee today is 18.9°C.
What is the water temperature in Haidersee during the summer months?
The water temperature in Haidersee in summer fluctuates in the range of 10°C - 22°C.
Is it possible to swim in Haidersee (Italy) and what are the possibilities for this?
Yes — you can swim in Haidersee (Lago di Resia/Reschensee): in summer people bathe from the shore and small beaches and enjoy activities like swimming, kayaking, SUP and windsurfing, but the high‑altitude reservoir stays cold and can be windy so caution and local safety advice are recommended, while in winter the lake often freezes and is used for ice activities with only experienced winter swimmers attempting ice dips.