Lough Allen — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lough Allen, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lough Allen today is 18.7°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
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| AUG 6 | 18.8°C | 22.0°C | |
| AUG 7 | 18.5°C | 22.0°C | |
| AUG 8 | 18.5°C | 22.0°C | |
| AUG 9 | 18.4°C | 22.0°C | |
| AUG 10 | 18.5°C | 22.0°C | |
| AUG 11 | 18.5°C | 22.0°C | |
| AUG 12 | 18.4°C | 22.0°C | |
| AUG 13 | 18.7°C | 22.0°C | |
| AUG 14 | 22.0°C | 18.9°C | |
| AUG 15 | 22.0°C | 19.0°C | |
| AUG 16 | 22.0°C | 19.2°C | |
| AUG 17 | 22.0°C | 19.4°C | |
| AUG 18 | 22.0°C | 19.5°C | |
| AUG 19 | 22.0°C | 19.7°C | |
| AUG 20 | 22.0°C | 19.9°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 |
|---|---|---|---|
| January | 1°C | 5°C | 8°C |
| February | 1°C | 5°C | 9°C |
| March | 3°C | 7°C | 10°C |
| April | 6°C | 10°C | 14°C |
| May | 10°C | 15°C | 21°C |
| June | 14°C | 20°C | 26°C |
| July | 16°C | 22°C | 27°C |
| August | 17°C | 22°C | 27°C |
| September | 13°C | 19°C | 24°C |
| October | 9°C | 13°C | 17°C |
| November | 5°C | 9°C | 12°C |
| December | 3°C | 6°C | 9°C |
Lough Allen: Water Temperature by Location
Lough Allen: Weather Forecast
August 14
August 15
August 16
August 17
August 18
August 19
Location & Local Information
Lough Allen is a scenic lake in Ireland's Hidden Heartlands, whose water temperature remains generally cool, even during the warmest months. Seasonal temperatures range from a cold 6∘C to 9∘C (43∘F to 48∘F) in the winter to a slightly milder peak of around 12∘C to 15∘C (54∘F to 59∘F) in high summer. The relatively modest summer warming means that swimming often requires a wetsuit for comfort, though open-water enthusiasts enjoy the refreshing cold.
Swimming is generally permitted in the lake, particularly at accessible spots like Cormongan Pier or the southern shore near Drumshanbo, which offers shallower areas. The area around the Lough Allen Adventure centre facilitates various water activities, including swimming. However, it is advisable to check local advisories, as the lake has occasionally had warnings due to water quality or algae blooms. Nearby attractions include the unique Arigna Mining Experience, the scenic Acres Lake Floating Boardwalk (part of the Shannon Blueway), and the home of Drumshanbo Gunpowder Irish Gin at The Shed Distillery.