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Lough Boderg — Current Water Temperature, Annual Trends and Forecast

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

Lough Key, Republic of Ireland
Lough Key, Republic of Ireland © By jbraine, CC BY 2.0

Current Water Temperature

20.8°C
Today
20.8°C
Yesterday
21.9°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 Boderg today is 20.8°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 22 to July 23

Table of Daily Sea Temperature Data

Date Current Average Forecast
JUL 1621.9°C22.5°C
JUL 1721.8°C22.5°C
JUL 1822.2°C22.5°C
JUL 1922.1°C22.5°C
JUL 2021.6°C22.5°C
JUL 2120.9°C22.5°C
JUL 2220.8°C22.5°C
JUL 2320.8°C22.5°C
JUL 2422.5°C20.9°C
JUL 2522.5°C21.0°C
JUL 2622.5°C21.1°C
JUL 2722.5°C21.1°C
JUL 2822.5°C21.2°C
JUL 2922.5°C21.3°C
JUL 3022.5°C21.4°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°C23°C28°C
August17°C22°C27°C
September13°C19°C24°C
October10°C14°C18°C
November5°C9°C12°C
December2°C6°C9°C

Lough Boderg: Water Temperature by Location

Lough Boderg: Weather Forecast

July 24

° / °
light drizzle
rain: 20% | wind:

July 25

° / °
moderate drizzle
rain: 69% | wind:

July 26

° / °
moderate drizzle
rain: 71% | wind:

July 27

° / °
light drizzle
rain: 70% | wind:

Location & Local Information

Lough Boderg, a lough on the River Shannon in County Leitrim, features water temperatures typical of an Irish inland lake, which fluctuate significantly with the seasons. During the height of summer, the water may reach its warmest range, roughly between 15∘C and 18∘C (59∘F to 64∘F). Conversely, winter temperatures are quite cold, generally falling between 6∘C and 9∘C (43∘F to 48∘F). Given its position on a major waterway, temperatures can also be influenced by the flow of the river.

Swimming in Lough Boderg is generally allowed as part of the wild swimming tradition in Ireland, with no strict laws prohibiting it, although no official facilities are usually present. Local knowledge suggests a jetty on the lake is popular with outdoor swimmers, allowing for an accessible dip, but swimmers must always exercise caution due to boat traffic on the Shannon Navigation and the cold temperatures outside of mid-summer. Close to the lough, visitors can explore Derrycarne Wood and its easy walking trails, or the charming town of Carrick-on-Shannon, a major hub for cruising and watersports on the River Shannon.

Nearby Lakes

Frequently Asked Questions

What is the current water temperature in Lough Boderg?
Water Temperature in Lough Boderg today is 20.8°C.
What is the water temperature in Lough Boderg during the summer months?
The water temperature in Lough Boderg in summer fluctuates in the range of 14°C - 28°C.
Is it possible to swim in Lough Boderg (Republic of Ireland) and what are the possibilities for this?
Yes — you can swim in Lough Boderg, typically from accessible shorelines, sheltered bays, islands or from boats and slipways, but expect cold, changeable open‑water conditions, limited facilities or lifeguards and the need to check local access, permissions and weather and to take appropriate safety precautions.