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 14.89°C. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration.

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.

58.8

°F

October 13, 13:26

Trend:

stable

Yesterday:

58.6°F

Tomorrow:

58.7°F

Sunrise:

07:46

Sunset:

18:34

Day Length:

10 h. 48 min.

Greystones in October

Minimum:

45.0°F

Average:

47.8°F

Maximum:

49.5°F

Sea water temperature in Greystones today

As of now, in Greystones, the water temperature is 58.8°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is 1.6°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to stay about the same.

Recent sea temperature and forecast

Today's water temperature is slightly lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 59.0°F on 2023, while the historical minimum was 55.7°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. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 58.4°F, the minimum temperature may reach 58.1°F, and the maximum might stay at 58.7°F.

Daily water temperature in Greystones

Date	Current Year actual* / forecast**	last year	10 years average
Sep 29	59.9°F	59.0°F	58.6°F
Sep 30	59.7°F	59.0°F	58.6°F
Oct 1	60.2°F	59.0°F	58.6°F
Oct 2	60.2°F	58.9°F	58.5°F
Oct 3	59.7°F	58.8°F	58.3°F
Oct 4	59.8°F	58.8°F	58.2°F
Oct 5	59.7°F	58.6°F	58.1°F
Oct 6	59.9°F	58.6°F	58.0°F
Oct 7	59.6°F	58.7°F	57.9°F
Oct 8	59.3°F	58.3°F	57.8°F
Oct 9	59.4°F	57.4°F	57.7°F
Oct 10	58.8°F	58.0°F	57.5°F
Oct 11	58.6°F	57.9°F	57.4°F
Oct 12	58.6°F	57.8°F	57.5°F
Oct 13	58.8°F	57.6°F	57.2°F
Oct 14	58.7°F	57.5°F	57.1°F
Oct 15	58.6°F	57.2°F	56.9°F
Oct 16	58.5°F	57.0°F	56.8°F
Oct 17	58.3°F	56.9°F	56.7°F
Oct 18	58.3°F	56.7°F	56.7°F
Oct 19	58.1°F	56.6°F	56.5°F
Oct 20	58.2°F	57.6°F	56.5°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 25, 2026, reaching a 63.4°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, 58.1°F in Summer, and 56.8°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Bray	58.7°F	5mi
Dún Laoghaire	58.8°F	11mi
Dublin	58.8°F	15mi

* current water temperature in this city

** straight line distance from Greystones