Marlacoo Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Marlacoo Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Marlacoo Lake today is 19.7°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 | 21.4°C | 22.0°C | |
| JUL 17 | 21.4°C | 22.0°C | |
| JUL 18 | 21.4°C | 22.0°C | |
| JUL 19 | 21.5°C | 22.0°C | |
| JUL 20 | 21.5°C | 22.0°C | |
| JUL 21 | 20.3°C | 22.0°C | |
| JUL 22 | 20.3°C | 22.0°C | |
| JUL 23 | 19.8°C | 22.0°C | |
| JUL 24 | 22.0°C | 19.8°C | |
| JUL 25 | 22.0°C | 19.9°C | |
| JUL 26 | 22.0°C | 20.0°C | |
| JUL 27 | 22.0°C | 20.2°C | |
| JUL 28 | 22.0°C | 20.3°C | |
| JUL 29 | 22.0°C | 20.4°C | |
| JUL 30 | 22.0°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 | 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 |
Marlacoo Lake: Water Temperature by Location
Marlacoo Lake: Weather Forecast
July 24
July 25
July 26
July 27
Location & Local Information
Marlacoo Lake, a small lough situated in County Armagh, Northern Ireland, experiences water temperatures typical of inland waters in the region, meaning they are cool year-round. While specific, consistent long-term data for the lake is not widely published, seasonal ranges generally follow larger nearby bodies of water, albeit with greater extremes due to its smaller size. In winter, surface temperatures are likely to drop as low as 4∘C to 8∘C (39∘F to 46∘F), while in the summer, shallow sections may reach a peak of approximately 16∘C to 18∘C (61∘F to 64∘F).
Swimming is generally permitted at Marlacoo Lake and the location is used by some local open water swimming groups, but it is not a designated bathing water and lacks official facilities or lifeguard supervision. As with all wild swimming in the area, caution is advised due to the cold temperatures outside of mid-summer and the absence of monitored water quality. The area around the lake is perhaps better known for its serene setting, fishing, and for local heritage sites like the nearby Marlacoo House and easy access to nature walks such as the scenic Clare Glen and Gosford Forest Park.