Lough Funshinagh — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lough Funshinagh, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lough Funshinagh today is 19.5°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 | 20.8°C | 22.3°C | |
| JUL 17 | 20.9°C | 22.3°C | |
| JUL 18 | 21.0°C | 22.3°C | |
| JUL 19 | 20.9°C | 22.3°C | |
| JUL 20 | 20.8°C | 22.3°C | |
| JUL 21 | 20.0°C | 22.3°C | |
| JUL 22 | 19.8°C | 22.3°C | |
| JUL 23 | 19.5°C | 22.3°C | |
| JUL 24 | 22.3°C | 19.6°C | |
| JUL 25 | 22.3°C | 19.8°C | |
| JUL 26 | 22.3°C | 19.9°C | |
| JUL 27 | 22.3°C | 20.1°C | |
| JUL 28 | 22.3°C | 20.2°C | |
| JUL 29 | 22.3°C | 20.3°C | |
| JUL 30 | 22.3°C | 20.5°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 | 13°C | 21°C | 27°C |
| July | 16°C | 22°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 | 10°C |
Lough Funshinagh: Water Temperature by Location
Lough Funshinagh: Weather Forecast
July 24
July 25
July 26
July 27
Location & Local Information
Lough Funshinagh, nestled in County Roscommon, is a remarkable lake in Ireland that presents some unique challenges and considerations for swimming. Because it sits in a karst limestone landscape, the lake’s levels and even its very presence can change dramatically—there have been times when it has nearly emptied or surged rapidly. While detailed temperature recordings are limited for this specific body of water, given its shallow nature and Irish midlands climate, one can reasonably estimate winter surface water temperatures at roughly 4–6 °C (39–43 °F), with summer peak surface levels around 14–17 °C (57–63 °F), possibly creeping up to 18–19 °C (64–66 °F) in exceptionally warm and calm conditions. Because of the lake’s depth fluctuations, cooling currents, and occasional disappearance of water, the conditions are more unpredictable than typical lakes.
Swimming in Lough Funshinagh is not widely advertised as a regular recreational activity and would carry extra caution. The unusual hydrology means that water levels and currents can shift unexpectedly; this unpredictability makes the lake less suitable for casual bathing. Although access might be possible, swimmers should account for the risks of sudden draining or deep spots appearing as water recedes. If someone does choose to swim, it should ideally be in known safe areas and in warmer months when surface temperatures are at their most comfortable. Nearby, the landscape around Lough Funshinagh offers interesting attractions: the village of Athlone sits close by, and the surrounding karst countryside with its esker ridges makes for a scenic walk or drive. The lake’s unique geology and birdlife also add to its appeal as a quiet natural heritage stop rather than a mainstream swimming destination.