Lower Lough Erne — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lower Lough Erne, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lower Lough Erne today is 19.6°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 |
|---|---|---|---|
| JUL 16 | 21.1°C | 21.9°C | |
| JUL 17 | 21.6°C | 21.9°C | |
| JUL 18 | 21.6°C | 21.9°C | |
| JUL 19 | 21.4°C | 21.9°C | |
| JUL 20 | 21.0°C | 21.9°C | |
| JUL 21 | 20.3°C | 21.9°C | |
| JUL 22 | 20.1°C | 21.9°C | |
| JUL 23 | 19.8°C | 21.9°C | |
| JUL 24 | 21.9°C | 19.7°C | |
| JUL 25 | 21.9°C | 19.8°C | |
| JUL 26 | 21.9°C | 19.9°C | |
| JUL 27 | 21.9°C | 20.1°C | |
| JUL 28 | 21.9°C | 20.2°C | |
| JUL 29 | 21.9°C | 20.3°C | |
| JUL 30 | 21.9°C | 20.4°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 |
|---|---|---|---|
| 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 | 13°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 |
Lower Lough Erne: Water Temperature by Location
Lower Lough Erne: Weather Forecast
July 24
July 25
July 26
July 27
Location & Local Information
Lower Lough Erne, one of the largest lakes in Northern Ireland, stretches across much of County Fermanagh and is known for its open waters, islands, and scenic shorelines. Because of its size and depth, the lake stays cool year-round, with winter temperatures often between 4–6 °C (39–43 °F). In spring, the water gradually warms, reaching 10–12 °C (50–54 °F) by late May. During the summer, particularly in July and August, surface temperatures can rise to about 15–18 °C (59–64 °F), though deeper areas remain noticeably colder. By autumn, the cooling trend returns, with the water dropping to around 9–11 °C (48–52 °F) before winter sets in again.
Swimming is allowed in Lower Lough Erne, and several designated areas make it accessible to both locals and visitors. However, due to the lake’s cool temperatures, large size, and occasional strong currents, swimmers are advised to stay close to the shore or use supervised zones. Wetsuits are commonly worn outside of midsummer. Beyond swimming, the lake offers opportunities for boating, kayaking, and fishing, and its shores are lined with scenic picnic spots and forest parks. Nearby attractions include the historic town of Enniskillen, Devenish Island with its ancient monastic ruins, and Castle Archdale Country Park, making the area a highlight of Fermanagh’s natural beauty.