Cork — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Cork, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Cork today is 17.7°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 |
|---|---|---|---|
| AUG 6 | 17.8°C | 19.0°C | |
| AUG 7 | 17.6°C | 19.0°C | |
| AUG 8 | 17.1°C | 19.0°C | |
| AUG 9 | 16.7°C | 19.0°C | |
| AUG 10 | 17.2°C | 19.0°C | |
| AUG 11 | 17.4°C | 19.0°C | |
| AUG 12 | 17.5°C | 19.0°C | |
| AUG 13 | 17.7°C | 19.0°C | |
| AUG 14 | 19.0°C | 17.8°C | |
| AUG 15 | 19.0°C | 17.8°C | |
| AUG 16 | 19.0°C | 17.9°C | |
| AUG 17 | 19.0°C | 18.0°C | |
| AUG 18 | 19.0°C | 18.0°C | |
| AUG 19 | 19.0°C | 18.1°C | |
| AUG 20 | 19.0°C | 18.2°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 | 3°C | 6°C | 10°C |
| March | 5°C | 9°C | 11°C |
| April | 8°C | 11°C | 14°C |
| May | 9°C | 14°C | 18°C |
| June | 13°C | 19°C | 24°C |
| July | 15°C | 20°C | 25°C |
| August | 15°C | 19°C | 24°C |
| September | 13°C | 18°C | 22°C |
| October | 9°C | 13°C | 16°C |
| November | 5°C | 8°C | 12°C |
| December | 3°C | 6°C | 10°C |
Cork: Weather Forecast
August 14
August 15
August 16
August 17
Location & Local Information
Cork, Ireland’s second-largest city, is built along the River Lee, which divides into several channels before flowing into Cork Harbour and the Atlantic Ocean. The river’s temperature reflects both inland freshwater inflows and tidal influence near the estuary. In winter, the water typically ranges between 5–7°C (41–45°F), while in summer it rises to around 15–18°C (59–64°F). On warm, sunny days in July or August, surface temperatures in sheltered areas can briefly reach 19°C (66°F). Because of the Lee’s mix of river and tidal waters, temperatures fluctuate gently throughout the year, staying cool but relatively stable. The most comfortable time for swimming is between June and early September, when both air and water are mildest.
Swimming in the River Lee within Cork City itself is generally not recommended due to tidal currents, boat traffic, and urban infrastructure. However, swimming is popular in nearby sections outside the city, particularly at the Inniscarra Reservoir, Lough Mahón, and several safe coastal spots near Cork Harbour. Local open-water swimmers often use these areas during summer, with wetsuits extending the season. Beyond swimming, Cork offers cultural and outdoor attractions, including Fitzgerald’s Park, the English Market, and nearby Blarney Castle, while the surrounding coastline provides scenic beaches and excellent opportunities for kayaking and sailing.