Lough Beg — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lough Beg, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lough Beg today is 15.8°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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 |
|---|---|---|---|
| JUN 25 | 15.9°C | 17.3°C | |
| JUN 26 | 16.0°C | 17.3°C | |
| JUN 27 | 16.9°C | 17.3°C | |
| JUN 28 | 17.0°C | 17.3°C | |
| JUN 29 | 17.0°C | 17.3°C | |
| JUN 30 | 17.1°C | 17.3°C | |
| JUL 1 | 16.0°C | 18.0°C | |
| JUL 2 | 15.9°C | 18.0°C | |
| JUL 3 | 18.0°C | 15.9°C | |
| JUL 4 | 18.0°C | 16.0°C | |
| JUL 5 | 18.0°C | 16.1°C | |
| JUL 6 | 18.0°C | 16.2°C | |
| JUL 7 | 18.0°C | 16.4°C | |
| JUL 8 | 18.0°C | 16.5°C | |
| JUL 9 | 18.0°C | 16.6°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 | 0°C | 4°C | 7°C |
| February | 0°C | 4°C | 7°C |
| March | 2°C | 6°C | 9°C |
| April | 5°C | 9°C | 11°C |
| May | 9°C | 13°C | 18°C |
| June | 12°C | 17°C | 22°C |
| July | 14°C | 18°C | 23°C |
| August | 14°C | 18°C | 23°C |
| September | 11°C | 16°C | 20°C |
| October | 8°C | 11°C | 14°C |
| November | 4°C | 8°C | 12°C |
| December | 0°C | 4°C | 8°C |
Lough Beg: Weather Forecast
July 3
July 4
July 5
July 6
Location & Local Information
Lough Beg is a small, shallow lough fed by the River Bann, lying immediately north of the much larger Lough Neagh in County Londonderry. The water temperature in the River Bann flowing through this area reflects the temperate Northern Irish climate, remaining consistently chilly. In the winter months, temperatures hover between 3 and 7∘C (37 to 45∘F), and even during a warm summer, the river’s surface temperature is unlikely to rise much above 14 to 18∘C (57 to 64∘F).
Swimming is strongly discouraged and not officially permitted in this section of the River Bann and Lough Beg for several reasons. Most notably, the area, along with Lough Neagh, has recently experienced issues with blue-green algae blooms, which produce toxins harmful to human health and lethal to animals. The lough and its islands, such as Church Island, are also part of a protected nature reserve, designated as a Special Protection Area for its sensitive bird and wetland habitat. For visitors, the nearby Seamus Heaney HomePlace in Bellaghy celebrates the life and work of the Nobel laureate poet, offering a major cultural attraction away from the water.