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River Suck — Current Water Temperature, Annual Trends and Forecast

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

River Suck, Republic of Ireland
River Suck, Republic of Ireland © By Sarah777, Public domain

Current Water Temperature

18.9°C
Today
19.1°C
Yesterday
20.1°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 the River Suck 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 1620.1°C19.0°C
JUL 1720.3°C19.0°C
JUL 1820.4°C19.0°C
JUL 1920.1°C19.0°C
JUL 2020.2°C19.0°C
JUL 2119.8°C19.0°C
JUL 2219.1°C19.0°C
JUL 2318.9°C19.0°C
JUL 2419.0°C18.9°C
JUL 2519.0°C18.9°C
JUL 2619.0°C18.9°C
JUL 2719.0°C18.9°C
JUL 2819.0°C18.9°C
JUL 2919.0°C18.9°C
JUL 3019.0°C18.9°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
January1°C5°C8°C
February1°C5°C9°C
March2°C6°C9°C
April6°C9°C12°C
May9°C14°C18°C
June13°C18°C23°C
July15°C19°C24°C
August14°C18°C23°C
September11°C16°C20°C
October9°C12°C15°C
November4°C7°C11°C
December1°C5°C9°C

River Suck: Water Temperature by Location

River Suck: Weather Forecast

July 24

° / °
overcast
rain: 11% | wind:

July 25

° / °
light drizzle
rain: 41% | wind:

July 26

° / °
light drizzle
rain: 27% | wind:

July 27

° / °
light drizzle
rain: 53% | wind:

Location & Local Information

Source:
• location Lough O'Flynn, County Roscommon
• elevation 72 metres (236 ft)
Mouth River Shannon
• location Shannonbridge, County Offaly
Length 133 km (83 mi)

The River Suck flows through Counties Roscommon and Galway before joining the River Shannon near Ballinasloe, winding through a landscape of meadows, bogs, and small villages. Its water temperature reflects the mild inland climate of western Ireland. In winter, the river typically remains around 4–6°C (39–43°F), while in summer it warms to about 15–18°C (59–64°F). On sunny, calm days in July or August, shallow stretches may briefly reach 19°C (66°F), although the deeper sections and shaded banks stay cooler. The river’s steady flow and clean water make it inviting during the warmer months, especially for those who enjoy open-water swimming in natural surroundings.

Swimming in the River Suck is allowed and occasionally practiced in suitable locations, particularly where the current is gentle and access is easy. However, as with many Irish rivers, swimmers should be cautious of varying depths and strong flows after rain. The river’s tranquil stretches make it better suited for short swims or recreational dips rather than long-distance swimming. The Suck Valley Way, a well-known walking route, follows much of the river and offers beautiful views of the surrounding countryside. Nearby towns such as Ballinasloe and Castlerea provide visitor facilities, fishing opportunities, and cultural attractions, adding to the river’s appeal for outdoor recreation.

Nearby Rivers

Frequently Asked Questions

What is the current water temperature in the River Suck?
Water Temperature in the River Suck today is 18.9°C.
What is the water temperature in the River Suck during the summer months?
The water temperature in the River Suck in summer fluctuates in the range of 13°C - 24°C.
Is it possible to swim in River Suck (Republic of Ireland) and what are the possibilities for this?
Yes — you can swim in calm stretches of the River Suck and people do so as informal wild/open-water swims or through organised canoe and kayak groups, but always check current water quality, respect private access, avoid weirs and strong currents, and follow local safety guidance.