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Carlingford Lough — Current Water Temperature, Annual Trends and Forecast

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

Muckno Lake, Republic of Ireland
Muckno Lake, Republic of Ireland © By Shane Killen, CC BY-SA 2.0

Current Water Temperature

11.7°C
Today
11.3°C
Yesterday
12.4°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 Carlingford Lough today is 11.7°C.

Water Temperature: Daily Trends, Historical Records, and Forecast

❌ As of today, the minimum water temperature ranges from 50°F (10°C) to 54°F (12°C). The water is slightly warmer, but still cool for most people. Swimming in such conditions is possible, but for most people, the time spent in the water should be limited to avoid hypothermia. Even experienced swimmers may feel discomfort if they stay in the water for too long. To improve comfort and safety, a wetsuit can be used. 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 September 13 to October 14

Table of Daily Sea Temperature Data

Date Current Average Forecast
OCT 712.4°C13.0°C
OCT 812.5°C13.0°C
OCT 912.2°C13.0°C
OCT 1012.5°C13.0°C
OCT 1112.6°C13.0°C
OCT 1211.9°C13.0°C
OCT 1311.3°C13.0°C
OCT 1411.7°C13.0°C
OCT 1513.0°C11.8°C
OCT 1613.0°C11.8°C
OCT 1713.0°C11.9°C
OCT 1813.0°C12.0°C
OCT 1913.0°C12.0°C
OCT 2013.0°C12.1°C
OCT 2113.0°C12.2°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
January1°C5°C8°C
February1°C5°C9°C
March3°C7°C10°C
April6°C10°C13°C
May10°C15°C21°C
June14°C20°C26°C
July16°C22°C27°C
August16°C22°C27°C
September13°C19°C24°C
October9°C13°C17°C
November5°C9°C12°C
December3°C6°C9°C

Carlingford Lough: Water Temperature by Location

Carlingford Lough: Weather Forecast

October 15

° / °
moderate drizzle
rain: 61% | wind:

October 16

° / °
light drizzle
rain: 16% | wind:

October 17

° / °
overcast
rain: 17% | wind:

October 18

° / °
fog
rain: 18% | wind:

Location & Local Information

Carlingford Lough, a glacial fjord that forms a scenic border between the Republic of Ireland and Northern Ireland, offers a bracing wild swimming experience typical of the northern Irish Sea. Water temperatures exhibit a significant seasonal range. During the winter months, temperatures are cold, averaging from a chilly 7∘C to 10∘C (45∘F to 50∘F). The warmest period is late summer, typically August and September, when the water can peak around 14∘C to 17∘C (57∘F to 63∘F).

Swimming is generally allowed in the lough, with several popular and safe spots along the coastline, such as Templetown Beach, which often achieves the Blue Flag status indicating excellent water quality and amenities. The area is frequented by open water swimmers and adventure centers, who promote water sports and activities. The medieval village of Carlingford, overlooked by the dramatic Cooley Mountains and home to King John's Castle, offers a rich historical backdrop to any visitor exploring the lough's shores.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Carlingford Lough?
Water Temperature in Carlingford Lough today is 11.7°C.
What is the water temperature in Carlingford Lough during the summer months?
The water temperature in Carlingford Lough in summer fluctuates in the range of 14°C - 27°C.
Is it possible to swim in Carlingford Lough (Republic of Ireland) and what are the possibilities for this?
Yes — Carlingford Lough is used for swimming: you can swim from beaches, coves and piers or join local open‑water clubs and organised guided swims and events in its sheltered, scenic waters, but you should check tides and currents, local water quality and lifeguard cover, watch for boat traffic, and use appropriate safety gear such as a wetsuit or visibility buoy.