Water temperature in Ballygally

This data the coastal Ballygally sea water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.

Current sea temperature in Ballygally

Water temperature in Ballygally today is 14.8°C. Based on our historical data over a period of ten years, the warmest water in this day in Ballygally was recorded in 2023 and was 14.7°C, and the coldest was recorded in 2013 at 13.5°C. Sea water temperature in Ballygally is expected to drop to 13.8°C in the next 10 days. September average water temperature in Ballygally is 14.1°C, the minimum temperature is 12.9°C, and the maximum is 15.9°C.

Throughout the year, the water temperature in Ballygally does not rise above 20°C and therefore is not suitable for comfortable swimming. The average water temperature in Ballygally in winter reaches 9.2°C, in spring 8.4°C, in summer the average temperature rises to 12.7°C, and in autumn it is 13.3°C.

Ballygally water temperature now

The sea salinity in Ballygally is 33.87‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Ballygally for today

Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for Ballygally. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast Ballygally. Data in table shown for 26 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Ballygally

Ballygally weather forecast

Current temperature and weather

Data in a table show Ballygally temperature today (26 September 2025). For more information and forecast for a few days, go to the weather forecast Ballygally.

0-3 h	3-6 h	6-9 h	9-12 h
11.8°C	12.7°C	12.2°C	13.2°C

12-15 h	15-18 h	18-21 h	21-24 h
14°C	14°C	12.9°C	12.9°C

Ballygally water temperature by month

These figures shows the average, minimum and maximum monthly sea temperature in Ballygally. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Ballygally on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve

Chart monthly average water temperature in Ballygally

The nearest beaches and cities from Ballygally with the water temperature today, as well as the air temperature and the state of the weather during the day and the average wave height for today

	Water	Weather		Wave
Portmuck	14.8°C	14°C		0.85 m
Belfast	14.2°C	14°C		0.6 m
Holywood	14.2°C	14°C		0.6 m
Crawfordsburn	14.7°C	14°C		0.7 m
Groomsport	14.7°C	14°C		0.7 m
Cushendun	14.8°C	12°C		0.96 m
Millisle	14.7°C	14°C		0.69 m
Greyabbey	14.7°C	14°C		0.69 m
Ballywalter	14.9°C	14°C		0.73 m
Portpatrick	15.1°C	14°C		0.97 m

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Our report for Ballygally is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.