World sea water temperatures

Irish Sea water temperature in September

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In September sea water temperature all along the Irish Sea coast is not yet warm enough for swimming and does not exceed 20°C. The warmest average water temperature Irish Sea in September is 16.6°C (in Aberaeron, United Kingdom), and the coldest sea surface temperature is 14.3°C (in Ardglass, United Kingdom). To find out the sea temperature today and in the coming days, go to Current sea temperature of the Irish Sea

Where you can swim in the Irish Sea in September?

This data on the average monthly surface water temperature on the Irish Sea coast in September. To see the details, select the country and then the city of your interest. Besides water temperature, you can also get information about the weather for today, tomorrow and the upcoming days, surf forecast, as well as the data on sunrise/sunset and moonrise/moonset at a given point on any given day.

 
2024
2023
2022
2021
2020
14.4°C
15°C
14.9°C
14.5°C
14.1°C
15.5°C
17.2°C
16.8°C
17.1°C
15.7°C
15.3°C
16.1°C
16.2°C
15.9°C
15°C
14.3°C
15.7°C
15.3°C
15.5°C
14.7°C
15.7°C
17.1°C
17.2°C
17°C
15.7°C
14.5°C
15.7°C
15.6°C
15.4°C
14.4°C
15.5°C
16.5°C
16.3°C
16.1°C
15.5°C

Countries bordering the Irish Sea

Water temps of the Irish Sea coast monthly

Where is the warm sea water in September?

Want to know where the water temperature in September is good for swimming? Select the continent of interest, the day of the month and the required water temperature

Region
Date (day and month)
Water temperature: min 16°C
 Average temperature  Maximum temperature

Other names for Irish Sea

Ireland Sea

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Our report for Irish Sea 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.

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