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Lough Mask — Current Water Temperature, Annual Trends and Forecast

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

Lough Mask, Republic of Ireland
Lough Mask, Republic of Ireland © By Oliver Dixon, CC BY-SA 2.0

Current Water Temperature

19.8°C
Today
19.9°C
Yesterday
21.2°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 Lough Mask today is 19.8°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 1621.2°C22.4°C
JUL 1721.3°C22.4°C
JUL 1821.7°C22.4°C
JUL 1921.6°C22.4°C
JUL 2020.5°C22.4°C
JUL 2120.0°C22.4°C
JUL 2219.9°C22.4°C
JUL 2319.8°C22.4°C
JUL 2422.4°C19.9°C
JUL 2522.4°C20.1°C
JUL 2622.4°C20.2°C
JUL 2722.4°C20.3°C
JUL 2822.4°C20.5°C
JUL 2922.4°C20.6°C
JUL 3022.4°C20.7°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
January2°C6°C9°C
February2°C6°C9°C
March3°C7°C10°C
April7°C11°C14°C
May11°C17°C22°C
June14°C21°C27°C
July16°C22°C28°C
August17°C22°C27°C
September13°C19°C24°C
October10°C14°C18°C
November5°C9°C12°C
December2°C6°C10°C

Lough Mask: Water Temperature by Location

Lough Mask: Weather Forecast

July 24

° / °
light drizzle
rain: 17% | wind:

July 25

° / °
light drizzle
rain: 35% | wind:

July 26

° / °
overcast
rain: 12% | wind:

July 27

° / °
light drizzle
rain: 44% | wind:

Location & Local Information

Lough Mask is a vast freshwater lake in County Mayo, renowned for its challenging fishing, which influences its recreational use. The water temperature of this Irish lough is generally cold year-round, reflecting its inland location and depth. In the depths of winter and early spring, temperatures can drop to around 8∘C to 10∘C (46∘F to 50∘F). Even during the summer months, the water only warms up modestly, typically peaking between 13∘C and 16∘C (55∘F to 61∘F), making any unassisted swim a bracing experience.

While there are no official Blue Flag bathing beaches, swimming is permitted and practiced, particularly in sheltered bays and accessible points like Tourmakeady Pier, where locals often take a dip. However, due to the cold temperatures, the lack of official lifeguard cover, and the presence of hidden underwater hazards like rocks, swimming is largely considered a form of wild swimming and requires caution. Visitors to the area often explore the nearby picturesque village of Cong, famous for the film The Quiet Man, the ruins of Cong Abbey, and the magnificent Ashford Castle.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Lough Mask?
Water Temperature in Lough Mask today is 19.8°C.
What is the water temperature in Lough Mask during the summer months?
The water temperature in Lough Mask in summer fluctuates in the range of 14°C - 28°C.
Is it possible to swim in Lough Mask (Republic of Ireland) and what are the possibilities for this?
Yes—Lough Mask can be swum in, with people using public shoreline spots, small beaches and bays or launching from boats and sometimes joining local clubs or organized swims, but access is uneven, the water is often cold and deep, and swimmers should verify local access, conditions and safety arrangements beforehand.