Lough Gowna — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lough Gowna, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lough Gowna today is 19.9°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 | 21.2°C | 22.5°C | |
| JUL 17 | 21.2°C | 22.5°C | |
| JUL 18 | 21.5°C | 22.5°C | |
| JUL 19 | 21.3°C | 22.5°C | |
| JUL 20 | 20.9°C | 22.5°C | |
| JUL 21 | 20.2°C | 22.5°C | |
| JUL 22 | 20.2°C | 22.5°C | |
| JUL 23 | 19.9°C | 22.5°C | |
| JUL 24 | 22.5°C | 20.0°C | |
| JUL 25 | 22.5°C | 20.2°C | |
| JUL 26 | 22.5°C | 20.3°C | |
| JUL 27 | 22.5°C | 20.4°C | |
| JUL 28 | 22.5°C | 20.6°C | |
| JUL 29 | 22.5°C | 20.7°C | |
| JUL 30 | 22.5°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 | 2°C | 6°C | 9°C |
| February | 2°C | 6°C | 9°C |
| March | 3°C | 7°C | 10°C |
| April | 7°C | 11°C | 14°C |
| May | 11°C | 17°C | 22°C |
| June | 14°C | 21°C | 27°C |
| July | 16°C | 23°C | 28°C |
| August | 17°C | 22°C | 27°C |
| September | 13°C | 19°C | 24°C |
| October | 10°C | 14°C | 18°C |
| November | 5°C | 9°C | 12°C |
| December | 2°C | 6°C | 9°C |
Lough Gowna: Water Temperature by Location
Lough Gowna: Weather Forecast
July 24
July 25
July 26
July 27
Location & Local Information
Lough Gowna, lying across the counties of Cavan and Longford, is a large, irregular lake formed from the upper River Erne system. Its many inlets and sheltered bays give it a distinctive shape and help slightly moderate water temperatures compared to deeper western lakes. During winter, the temperature usually remains around 4–6°C (39–43°F), while in summer it rises to about 15–18°C (59–64°F). On calm, sunny days, shallow sections near the shore can occasionally reach 19°C (66°F), though deeper areas stay noticeably cooler. The best conditions for swimming generally occur between late May and early September, when both the water and air are at their mildest.
Swimming is allowed in Lough Gowna, and the lake’s gentle shores make it a popular place for recreational swimmers and families in summer. Designated areas near the village of Gowna provide good access and relatively safe conditions, though swimmers should still be cautious of sudden depth changes and boat traffic. The lake is also known for fishing, kayaking, and peaceful scenic walks along its wooded banks. Nearby attractions include the village of Ballinamuck and the historic town of Granard, while the surrounding countryside offers a quiet and relaxing setting typical of Ireland’s lake region.