Lough Owel — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lough Owel, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lough Owel today is 13.7°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 54°F (12°C) to 60°F (15°C). The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear. 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 |
|---|---|---|---|
| SEP 16 | 15.3°C | 19.0°C | |
| SEP 17 | 14.9°C | 19.0°C | |
| SEP 18 | 14.6°C | 19.0°C | |
| SEP 19 | 14.7°C | 19.0°C | |
| SEP 20 | 14.6°C | 19.0°C | |
| SEP 21 | 14.6°C | 19.0°C | |
| SEP 22 | 14.0°C | 19.0°C | |
| SEP 23 | 13.7°C | 19.0°C | |
| SEP 24 | 19.0°C | 14.0°C | |
| SEP 25 | 19.0°C | 14.2°C | |
| SEP 26 | 19.0°C | 14.5°C | |
| SEP 27 | 19.0°C | 14.8°C | |
| SEP 28 | 19.0°C | 15.0°C | |
| SEP 29 | 19.0°C | 15.3°C | |
| SEP 30 | 19.0°C | 15.6°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 | 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 | 16°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 Owel: Water Temperature by Location
Lough Owel: Weather Forecast
September 23
September 24
September 25
September 26
September 27
Location & Local Information
Lough Owel, located just north of Mullingar in County Westmeath, is a deep, spring-fed lake known for its clear blue water and excellent water quality. Its temperature changes gradually with the Irish seasons, averaging around 4–6°C (39–43°F) in winter and rising to about 15–18°C (59–64°F) in summer. On warm, calm days, the surface temperature may briefly reach 19°C (66°F), but cooler layers remain below due to the lake’s depth. The clean, refreshing water makes it inviting during the warmer months, with late June through early September offering the most comfortable swimming conditions. Outside this period, the chill can be quite intense, so cold-water swimmers usually limit their time in the water.
Swimming is allowed and popular in designated areas such as Portnashangan and Belvedere House, where the water is monitored and access is safe. The lake’s clarity and relatively calm surface make it suitable for both casual bathing and open-water swimming, though wetsuits are often recommended. Beyond swimming, Lough Owel is a favourite destination for boating and trout fishing, surrounded by gentle countryside ideal for walks. Nearby attractions include the historic town of Mullingar, Belvedere House and Gardens, and the scenic Royal Canal, all adding to the lake’s peaceful charm.