Lough Macnean Lower — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lough Macnean Lower, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lough Macnean Lower today is 20.2°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
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| JUL 16 | 21.1°C | 22.0°C | |
| JUL 17 | 21.7°C | 22.0°C | |
| JUL 18 | 21.7°C | 22.0°C | |
| JUL 19 | 21.7°C | 22.0°C | |
| JUL 20 | 21.3°C | 22.0°C | |
| JUL 21 | 20.8°C | 22.0°C | |
| JUL 22 | 20.6°C | 22.0°C | |
| JUL 23 | 20.6°C | 22.0°C | |
| JUL 24 | 22.0°C | 20.3°C | |
| JUL 25 | 22.0°C | 20.4°C | |
| JUL 26 | 22.0°C | 20.5°C | |
| JUL 27 | 22.0°C | 20.6°C | |
| JUL 28 | 22.0°C | 20.7°C | |
| JUL 29 | 22.0°C | 20.7°C | |
| JUL 30 | 22.0°C | 20.8°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 | 8°C |
| March | 3°C | 7°C | 10°C |
| April | 6°C | 10°C | 13°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 Macnean Lower: Water Temperature by Location
Lough Macnean Lower: Weather Forecast
July 24
July 25
July 26
July 27
Location & Local Information
Lough Macnean Lower lies on the border between County Fermanagh and County Cavan, surrounded by gentle hills and rural farmland. The lake’s water is typically cool throughout the year, reflecting the mild but variable climate of Northern Ireland. During winter, surface temperatures can drop to about 5–7 °C (41–45 °F), while in spring they slowly rise with the lengthening days. In summer, the water warms to around 15–18 °C (59–64 °F) at its peak, making short swims possible for those accustomed to cooler conditions. By autumn, the lake begins to cool again, often settling around 10 °C (50 °F) before winter returns.
Swimming is generally permitted in Lough Macnean Lower, though caution is advised due to uneven depths and occasional algae blooms in warmer months. Local open-water swimmers enjoy its clear stretches near access points, but wetsuits are recommended for comfort and safety most of the year. The lake’s scenic setting makes it popular for kayaking, fishing, and picnicking along the shores. Nearby attractions include the Marble Arch Caves Global Geopark, the village of Belcoo, and forest walks that provide peaceful views of both the Lower and Upper Lough Macnean, offering visitors a balance of relaxation and outdoor adventure.