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Ireland

Ireland, Ulster © By Brian Herrity
Ireland Sea Temperature
This page provides detailed information about the water temperature in Ireland. All countries, cities and resorts on the coast. The range of sea temperatures for today. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.
Current Sea Temperature
6.9°C
minimal
8.1°C
average
9.1°C
maximum
Graph of Sea Temperature Changes in Ireland Over the Last 60 Days
The Warmest Places on the Seaside in Ireland Today
The Most Popular Seaside Resorts in Ireland
Seas and Oceans that Border Ireland
Ireland: List of Regions



Water Temperature in Ireland: General Trends and Swimming Opportunities
Ireland, surrounded by the North Atlantic Ocean, is known for its cool and temperate climate, which extends to its coastal waters. The sea temperature around Ireland is relatively cold year-round, with average temperatures ranging from about 8°C (46°F) in winter to 16°C (61°F) in summer. This makes open-water swimming challenging for those not accustomed to the colder conditions, but the invigorating nature of the sea attracts some adventurous swimmers, especially in the summer months.
Ireland offers a variety of coastal experiences, with numerous beaches scattered along its shores, especially on the west coast. While the waters are cool, they are crystal clear and provide excellent conditions for activities such as surfing, kayaking, and sailing. Some of the most famous beaches, such as those at Sligo, Donegal, and Kerry, offer stunning scenery and an opportunity to enjoy the fresh Atlantic air. For those willing to brave the cold, outdoor swimming is possible, though many prefer to dip in and out for short bursts or enjoy the beach without immersing themselves in the water for long periods.
In addition to the natural beauty of its beaches, Ireland is also known for its variety of outdoor swimming opportunities in more sheltered areas. The country has numerous outdoor heated pools, along with the famous sea-swimming clubs that thrive in many coastal towns. These swimming clubs, such as those in Dublin or Galway, are popular with locals who enjoy the refreshingly cold waters, especially during the summer months. Swimming in Ireland is not just about the water; it's also about the stunning natural beauty surrounding the coast, making it a unique experience for those who enjoy combining outdoor activities with breathtaking landscapes.
General Information and Geographical Location of Ireland
Original name of the country: Éire
Ireland is in Europe. The country is washed by three seas, such as the Atlantic Ocean, the Irish Sea, the Celtic Sea. Ireland - has a fairly long coastline. To determine the temperature of the water in it, we track 45 settlements and resorts. Link to Google Maps.
Ireland Weather
Ireland has a temperate maritime climate, heavily influenced by the Atlantic Ocean and the Gulf Stream. Summers are mild, with temperatures typically ranging from 60°F to 70°F (16°C to 21°C), though occasional heatwaves can push temperatures above 75°F (24°C). Rain is common throughout the year, but summer tends to be slightly drier, especially in the east. The weather is often unpredictable, with sudden shifts between sunshine, rain, and cloudy skies. Long daylight hours during summer, particularly in June and July, create a pleasant atmosphere for outdoor activities.
Winters in Ireland are generally cool but not harsh, with temperatures averaging between 35°F and 45°F (2°C to 7°C). Snowfall is rare and usually melts quickly, though frost can occur, especially in inland areas. Rain and strong winds are more frequent in winter, particularly along the western coast, where Atlantic storms bring heavy precipitation. The short winter days, with as little as eight hours of daylight in December, contribute to a gray and damp atmosphere. Overall, Ireland’s climate is mild but often wet, with moderate temperature changes throughout the year.
Frequently Asked Questions About Ireland and its Water Temperatures
What is the sea temperature today on the coast of Ireland?
The sea temperature today on the coast of Ireland ranges from from 44°F (6.9°C) in Gyles Quay to 48°F (9.1°C) in Milltown Cottages.
Which seas and oceans border Ireland?
Ireland is bordered by three seas, namely: the Atlantic Ocean, the Irish Sea, the Celtic Sea.
How long is the coastline in Ireland?
According to The World Factbook, the length of Ireland's coastline is 899 miles (1,448 km), while the World Resources Institute estimates it at 3,999 miles (6,437 km).
What is the best time for swimming and beach holidays on the coast of Ireland?
In Ireland, the average monthly sea temperature does not rise above 68 degrees Fahrenheit (20 degrees Celsius) in any month of the year. The highest water temperature occurs in July and reaches 69 degrees Fahrenheit (21 degrees Celsius).
What is the sea temperature history in Ireland?
Here are the ranges of sea temperatures in Ireland by month based on historical data: in January from 44°F (7°C) to 53°F (12°C), in February from 42°F (6°C) to 51°F (11°C), in March from 42°F (6°C) to 51°F (11°C), in April from 44°F (7°C) to 53°F (12°C), in May from 46°F (8°C) to 59°F (15°C), in June from 48°F (9°C) to 64°F (18°C), in July from 51°F (11°C) to 69°F (21°C), in August from 53°F (12°C) to 66°F (19°C), in September from 55°F (13°C) to 66°F (19°C), in October from 50°F (10°C) to 62°F (17°C), in November from 50°F (10°C) to 59°F (15°C), in December from 46°F (8°C) to 55°F (13°C).