Greystones — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Greystones (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 Greystones help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Greystones in the Irish Sea today is 13°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
Water temperature in Greystones 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 Greystones will be 12.8°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 2 | 12.9°C | 12.5°C | |
| JUN 3 | 13.2°C | 12.8°C | |
| JUN 4 | 13.5°C | 12.3°C | |
| JUN 5 | 13.3°C | 12.3°C | |
| JUN 6 | 13.4°C | 12.3°C | |
| JUN 7 | 13.2°C | 12.3°C | |
| JUN 8 | 13.0°C | 12.0°C | |
| JUN 9 | 13.0°C | 12.3°C | |
| JUN 10 | 13.0°C | 12.3°C | 13.0°C |
| JUN 11 | 12.0°C | 13.0°C | |
| JUN 12 | 12.5°C | 12.9°C | |
| JUN 13 | 12.5°C | 12.9°C | |
| JUN 14 | 12.8°C | 12.9°C | |
| JUN 15 | 12.5°C | 12.9°C | |
| JUN 16 | 12.8°C | 12.8°C | |
| JUN 17 | 12.5°C | 12.8°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
Greystones, on the east coast of County Wicklow in Leinster, sits beside the Irish Sea and experiences relatively cool coastal water year-round. Seasonal sea surface temperatures typically range from about 8–10 °C in winter (December–February), rising slowly through spring to roughly 9–13 °C (March–May). The warmest months are June to August when waters generally reach 14–18 °C, with occasional brief peaks closer to 19–20 °C during particularly warm summers. Autumn temperatures commonly sit around 11–15 °C (September–November) as the sea gradually cools. These conditions mean the sea remains distinctly cooler than many continental bathing areas, with the coldest months feeling bracing and the height of summer offering the most comfortable swimming conditions for those accustomed to temperate waters.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 7°C | 9°C | 11°C |
| February | 7°C | 8°C | 10°C |
| March | 7°C | 8°C | 10°C |
| April | 7°C | 9°C | 11°C |
| May | 9°C | 11°C | 13°C |
| June | 11°C | 13°C | 16°C |
| July | 12°C | 14°C | 17°C |
| August | 13°C | 15°C | 17°C |
| September | 13°C | 15°C | 17°C |
| October | 12°C | 14°C | 16°C |
| November | 11°C | 13°C | 15°C |
| December | 9°C | 11°C | 13°C |
* Click on a month to view detailed water temperature data.
Greystones: Weather Forecast
June 11
June 12
Location, Beaches & Local Information
Nearby Beaches & Facilities
Greystones Beach
The Cove
North Beach
Seapoint Beach
Muir Eireann Bay Beach
Bray Promenade And Beach
Bray Beach
Leamore Strand
Sandymount
Swimming Conditions
Swimming and beach holidays in Greystones cater to a mix of daytime beachgoers and open-water enthusiasts. The town provides easy shore access from sandy and shingle stretches and sheltered spots by the harbour, making short swims and shoreline paddling straightforward when conditions are calm. Many visitors and locals use wetsuits outside the midsummer period; open-water swimming groups and occasional organised events are common, reflecting a lively sea-swimming culture. Tide, swell and weather should be considered before entering the water, and facilities, promenades and nearby amenities make Greystones a convenient base for coastal recreation even when water temperatures are on the cooler side.