What is the current water temperature in Greystones?

Q: What is the current water temperature in Greystones?

As of now, in Greystones, the water temperature is 17.37°C. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it.

Ireland > Greystones

Water temperature in Greystones

Detailed information about the current water temperature in Greystones. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.

63.3

°F

July 26, 08:00

Trend:

stable

Yesterday:

63.4°F

Tomorrow:

63.5°F

Sunrise:

05:31

Sunset:

21:29

Day Length:

15 h. 58 min.

Greystones in August

Minimum:

45.2°F

Average:

48.3°F

Maximum:

49.8°F

Sea water temperature in Greystones today

As of now, in Greystones, the water temperature is 63.3°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it. Today's reading is 4.1°F higher than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to rise a bit.

Recent sea temperature and forecast

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 60.6°F on 2018, while the historical minimum was 58.3°F on 2020.

latest data

last year

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 63.5°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Greystones

Date	Current Year actual* / forecast**	last year	10 years average
Jul 12	60.0°F	59.3°F	58.3°F
Jul 13	60.2°F	59.6°F	58.5°F
Jul 14	60.4°F	59.7°F	58.5°F
Jul 15	60.6°F	60.0°F	58.7°F
Jul 16	60.7°F	59.6°F	58.7°F
Jul 17	61.1°F	59.6°F	58.8°F
Jul 18	61.2°F	59.4°F	59.1°F
Jul 19	61.5°F	59.4°F	59.2°F
Jul 20	61.6°F	59.3°F	59.2°F
Jul 21	61.8°F	59.2°F	59.1°F
Jul 22	62.0°F	59.4°F	59.1°F
Jul 23	62.4°F	59.9°F	59.2°F
Jul 24	62.8°F	58.6°F	59.3°F
Jul 25	63.4°F	59.7°F	59.3°F
Jul 26	63.3°F	59.4°F	59.2°F
Jul 27	63.5°F	59.5°F	59.4°F
Jul 28	63.5°F	59.5°F	59.4°F
Jul 29	63.6°F	60.2°F	59.5°F
Jul 30	63.5°F	59.9°F	59.4°F
Jul 31	63.4°F	59.4°F	59.4°F
Aug 1	63.4°F	59.4°F	59.3°F
Aug 2	63.6°F	59.5°F	59.5°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Greystones by month

In an average year, Greystones offers no days when the water temperature is warm enough to swim comfortably.

The warmest water in Greystones was recorded on July 24, 2026, reaching a 62.8°F. While the coldest temperature occurred on March 11, 2018, dipping to 43.0°F. The average readings by season are 48.0°F in Winter, 48.7°F in Spring, 58.0°F in Summer, and 56.7°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Bray	63.6°F	5mi
Dún Laoghaire	64.1°F	11mi
Dublin	64.5°F	15mi

* current water temperature in this city

** straight line distance from Greystones