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Lake Mullutu-Suurlaht — Current Water Temperature, Annual Trends and Forecast

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

Lake Karujärv, Estonia
Lake Karujärv, Estonia © By Marko Vainu, CC BY-SA 3.0

Current Water Temperature

21.5°C
Today
21.7°C
Yesterday
18.6°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 Lake Mullutu-Suurlaht today is 21.5°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. 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 21 to July 22

Table of Daily Sea Temperature Data

Date Current Average Forecast
JUL 1418.6°C21.0°C
JUL 1521.1°C21.0°C
JUL 1621.6°C21.0°C
JUL 1721.6°C21.0°C
JUL 1821.8°C21.0°C
JUL 1922.2°C21.0°C
JUL 2021.7°C21.0°C
JUL 2121.5°C21.0°C
JUL 2221.0°C21.5°C
JUL 2321.0°C21.5°C
JUL 2421.0°C21.4°C
JUL 2521.0°C21.4°C
JUL 2621.0°C21.4°C
JUL 2721.0°C21.4°C
JUL 2821.0°C21.3°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°C3°C6°C
February0°C3°C6°C
March0°C4°C7°C
April4°C8°C11°C
May8°C13°C19°C
June13°C19°C24°C
July16°C21°C26°C
August14°C20°C25°C
September11°C17°C22°C
October6°C10°C13°C
November3°C7°C10°C
December0°C4°C7°C

Lake Mullutu-Suurlaht: Water Temperature by Location

Lake Mullutu-Suurlaht: Weather Forecast

July 22

° / °
overcast
rain: 10% | wind:

July 23

° / °
light drizzle
rain: 62% | wind:

July 24

° / °
light drizzle
rain: 47% | wind:

July 25

° / °
light drizzle
rain: 53% | wind:

Location & Local Information

Lake Mullutu-Suurlaht (Estonian: Mullutu-Suurlaht) is a shallow coastal lagoon on Saaremaa whose depth and sheltered character strongly influence water temperatures. In spring the surface typically warms from about 2–12 °C (36–54 °F) as ice melts and sunlight increases. By early summer temperatures often reach 15–18 °C (59–64 °F), and in the warmest weeks of July and August the lake commonly sits around 18–22 °C (64–72 °F), with sheltered bays sometimes climbing to 24–26 °C (75–79 °F) on calm, sunny days. In autumn the water cools back through roughly 8–14 °C (46–57 °F) before freezing. Winter conditions bring surface temperatures close to 0–4 °C (32–39 °F) and the lake frequently forms ice cover.

Swimming in Mullutu-Suurlaht is generally allowed and practiced by locals because it is a public natural waterbody, and the shallow basins warm quickly for summer bathing. However, the same shallowness and abundant reeds can lead to higher turbidity, vegetation and occasional algal blooms, so water quality varies by area and season; swimmers should choose clear spots and heed any local advisories. In winter, ice swimming is possible where safe, but caution is essential because ice thickness can be uneven.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Lake Mullutu-Suurlaht?
Water Temperature in Lake Mullutu-Suurlaht today is 21.5°C.
What is the water temperature in Lake Mullutu-Suurlaht during the summer months?
The water temperature in Lake Mullutu-Suurlaht in summer fluctuates in the range of 13°C - 26°C.
Is it possible to swim in Lake Mullutu-Suurlaht (Estonia) and what are the possibilities for this?
Yes — you can swim in parts of Lake Mullutu-Suurlaht, mainly by wading and bathing from shallow, sheltered bays or small informal shores, but extensive reed beds, shallow muddy bottoms, variable water quality and some protected bird habitats mean you should choose clear, accessible spots and follow local guidance.