Roundstone — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Roundstone (Connacht, Republic of Ireland). It includes the current water temperature, daily data for the last month presented in a simple chart, and a 7-day forecast. The page also compares today’s value with typical averages for this period, shows usual monthly ranges during the year, and lists nearby beaches with short descriptions. Local weather for the next few days and general details about Roundstone help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Roundstone in the Atlantic Ocean today is 15°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
Water temperature in Roundstone rose over the last 30 days but fell over the last week. Currently, the sea water temperature at this location matches the average for this day in previous years.
According to our forecast, Water temperature in Roundstone will be 14.7°C in the next 7 days. See the table below for daily data for the upcoming week.
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| JUN 24 | 15.0°C | 8.5°C | |
| JUN 25 | 15.4°C | 8.5°C | |
| JUN 26 | 15.6°C | 10.5°C | |
| JUN 27 | 16.1°C | 11.0°C | |
| JUN 28 | 16.3°C | 13.5°C | |
| JUN 29 | 16.1°C | 13.3°C | |
| JUN 30 | 15.7°C | 14.5°C | |
| JUL 1 | 15.5°C | 14.5°C | |
| JUL 2 | 15.3°C | 14.5°C | 15.3°C |
| JUL 3 | 14.0°C | 15.2°C | |
| JUL 4 | 14.3°C | 15.1°C | |
| JUL 5 | 14.3°C | 15.1°C | |
| JUL 6 | 14.0°C | 15.0°C | |
| JUL 7 | 14.3°C | 14.9°C | |
| JUL 8 | 14.5°C | 14.8°C | |
| JUL 9 | 14.5°C | 14.7°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.
Water temperature data for this location is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.
Annual Water Temperature Overview by Month
Monthly Water Temp Ranges
Annual Water Temperature Trend
Roundstone sits on the sheltered edge of Connemara in County Galway, facing the Atlantic and a mix of bays, beaches and rocky inlets. Sea temperatures around Roundstone vary with the seasons: winter months (December–February) typically see water around 8–10 °C, spring (March–May) usually rises to about 9–12 °C, summer (June–August) brings the warmest conditions often between 14–17 °C, and autumn (September–November) cools back to roughly 12–15 °C. These figures are averages and can fluctuate with weather, currents and occasional warm or cool spells. The Atlantic influence keeps the water cooler than many inland or more sheltered coasts, with sharp changes possible after storms or cold fronts.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 7°C | 10°C | 12°C |
| February | 7°C | 9°C | 11°C |
| March | 7°C | 9°C | 11°C |
| April | 8°C | 10°C | 12°C |
| May | 10°C | 12°C | 14°C |
| June | 11°C | 13°C | 17°C |
| July | 12°C | 15°C | 20°C |
| August | 14°C | 16°C | 19°C |
| September | 13°C | 15°C | 18°C |
| October | 12°C | 14°C | 16°C |
| November | 10°C | 12°C | 15°C |
| December | 9°C | 10°C | 13°C |
* Click on a month to view detailed water temperature data.
Roundstone: Weather Forecast
July 3
July 4
July 5
Location, Beaches & Local Information
Nearby Beaches & Facilities
Dogs Bay Beach
Gurteen Bay Beach
Dog's Bay Beach
Tra Na Feadoige
Moyrus Beach
Swimming Conditions
Swimming around Roundstone suits a range of tastes from sheltered family beaches to more adventurous open-water dips. Sandy strands and small coves provide pleasant spots for bathing on calm summer days, while clear water and kelp beds can make for rewarding snorkeling and shoreline exploration. Because summer temperatures peak only in the mid-teens °C, many visitors choose wetsuits outside the warmest weeks; even in summer conditions, water can feel bracing. Tidal flows and Atlantic swells mean conditions change quickly, so swimmers should pick sheltered locations, be aware of tides and weather, and not assume lifeguard cover is always available. For a beach holiday, Roundstone offers scenic, less crowded shores, basic local amenities and a wild coastal character that suits relaxed family swims and hardy swimmers alike.