Munster Blackwater River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Munster Blackwater River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Munster Blackwater River 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 |
|---|---|---|---|
| SEP 16 | 17.0°C | 15.0°C | |
| SEP 17 | 16.9°C | 15.0°C | |
| SEP 18 | 16.5°C | 15.0°C | |
| SEP 19 | 14.7°C | 15.0°C | |
| SEP 20 | 14.7°C | 15.0°C | |
| SEP 21 | 14.9°C | 15.0°C | |
| SEP 22 | 14.4°C | 15.0°C | |
| SEP 23 | 15.8°C | 15.0°C | |
| SEP 24 | 15.0°C | 15.8°C | |
| SEP 25 | 15.0°C | 15.7°C | |
| SEP 26 | 15.0°C | 15.7°C | |
| SEP 27 | 15.0°C | 15.6°C | |
| SEP 28 | 15.0°C | 15.6°C | |
| SEP 29 | 15.0°C | 15.6°C | |
| SEP 30 | 15.0°C | 15.5°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 | 0°C | 4°C | 8°C |
| February | 0°C | 5°C | 10°C |
| March | 2°C | 6°C | 10°C |
| April | 6°C | 9°C | 12°C |
| May | 10°C | 15°C | 19°C |
| June | 12°C | 17°C | 22°C |
| July | 14°C | 18°C | 23°C |
| August | 14°C | 18°C | 23°C |
| September | 10°C | 15°C | 19°C |
| October | 8°C | 11°C | 14°C |
| November | 3°C | 7°C | 12°C |
| December | 4°C | 7°C | 10°C |
Munster Blackwater River: Water Temperature by Location
Munster Blackwater River: Weather Forecast
September 24
September 25
September 26
September 27
Location & Local Information
Source Mullaghareirk Mountains
• location County Kerry
• coordinates 52.192°N 9.241°W
• elevation 229 m (751 ft)
Mouth Celtic Sea
• location Youghal Harbour, Cork
• coordinates 51.942°N 7.833°W
Length 169 km (105 mi)
The Munster Blackwater River flows westward across Ireland, and its water temperature, like other Irish rivers, is cold for much of the year, providing an invigorating experience for those who choose to swim. During the colder seasons, water temperatures typically hover between 5∘C and 10∘C (41∘F to 50∘F). In the height of summer, the river warms up, reaching a comfortable range of 16∘C to 19∘C (61∘F to 66∘F), depending on the stretch and recent weather.
Wild swimming is a popular activity in many locations along the Blackwater, and it is generally tolerated, provided swimmers exercise caution and respect for the environment. Towns like Fermoy even host organized events, such as the annual Martin Duggan Memorial Swim, highlighting the river’s suitability for swimming in certain areas. However, swimmers should be mindful of water quality, especially after heavy rain, and the strong currents that can exist, particularly in the lower tidal reaches near Youghal. Beyond swimming, the river valley is a hub for tourism, with attractions like the magnificent Lismore Castle and the scenic Blackwater Valley Scenic Drive.