World sea water temperatures

Water temperature in Seamill

This data the coastal Seamill 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 Seamill

Water temperature in Seamill today is 15.6°C. Based on our historical data over a period of ten years, the warmest water in this day in Seamill was recorded in 2022 and was 16.1°C, and the coldest was recorded in 2015 at 13.9°C. Sea water temperature in Seamill is expected to drop to 14°C in the next 10 days. September average water temperature in Seamill is 14.1°C, the minimum temperature is 12.5°C, and the maximum is 16.6°C.

Throughout the year, the water temperature in Seamill does not rise above 20°C and therefore is not suitable for comfortable swimming. The average water temperature in Seamill in winter reaches 8.3°C, in spring 8.7°C, in summer the average temperature rises to 14.2°C, and in autumn it is 12.6°C.

Seamill water temperature now


5 September 2025
today temp
15.6°C
4 September 2025
yesterday temp
15.6°C


The sea salinity in Seamill is 33.73‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Seamill 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 Seamill. 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 Seamill. Data in table shown for 6 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

0-3 h3-6 h6-9 h9-12 h
1' 1"1' 2"1' 1"1' 1"
0.34 m0.35 m0.32 m0.33 m
12-15 h15-18 h18-21 h21-24 h
1' 3"1' 3"1' 7"1' 7"
0.37 m0.37 m0.47 m0.47 m

Surf report in Seamill

Seamill wave height and direction

Seamill weather forecast

Seamill wind speed and direction

Current temperature and weather

Data in a table show Seamill temperature today (6 September 2025). For more information and forecast for a few days, go to the weather forecast Seamill.

0-3 h3-6 h6-9 h9-12 h
12.3°C12.2°C12.4°C13.7°C
12-15 h15-18 h18-21 h21-24 h
14.5°C15°C14.3°C13.1°C

You may also be interested in other sections of our site for Seamill: Sunrise and Sunset, Tides

Seamill water temperature by month

These figures shows the average, minimum and maximum monthly sea temperature in Seamill. 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 Seamill 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

MonthAvrMinMax
January8.1°C6.4°C9.7°Ccold
Sea water temperature in Seamill in January
February7.2°C5.7°C8.5°Ccold
Sea water temperature in Seamill in February
March7.2°C5.6°C9.6°Ccold
Sea water temperature in Seamill in March
April8.3°C5.8°C10.4°Ccold
Sea water temperature in Seamill in April
May10.5°C7.9°C13.1°Ccold
Sea water temperature in Seamill in May
June12.9°C10.3°C16.4°Ccold
Sea water temperature in Seamill in June
July14.6°C12.6°C17.5°Ccold
Sea water temperature in Seamill in July
August15.2°C13.6°C17.6°Ccold
Sea water temperature in Seamill in August
September14.1°C12.5°C16.6°Ccold
Sea water temperature in Seamill in September
October12.5°C10.7°C14.2°Ccold
Sea water temperature in Seamill in October
November11.1°C9.2°C12.5°Ccold
Sea water temperature in Seamill in November
December9.5°C7.6°C11°Ccold
Sea water temperature in Seamill in December

Chart monthly average water temperature in Seamill

Water temperature in Seamill

Where is the warmest sea water in the world?

If you want to plan a vacation on the beach and enjoy the warm sea, choose the day of the year, region and the minimum comfortable sea/ocean temperature that interests you. As a result, you will get a list of countries and cities in which the average sea temperature or maximum temperature on this day over the past 10 years exceeds your chosen value

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

Nearby beaches and cities

The nearest beaches and cities from Seamill 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

WaterWeatherWave
Irvine15.6°C15°C0.4 m
Isle of Arran15.5°C15°C0.37 m
Barassie15.5°C15°C0.45 m
Wemyss Bay15.1°C15°C0.13 m
Lochranza15.1°C16°C0.26 m
Inverkip15.1°C15°C0.13 m
Dunoon15.1°C15°C0.13 m
Gourock15.2°C15°C0.13 m
Greenock15.2°C15°C0.13 m
Dumbarton15.2°C16°C0.13 m

Scotland photo gallery

  • Scotland
  • Swimmers at Prestwick Beach
  • Very chilly early evening swim
  • From Garron Bridge,  in June.

If you have interesting photos of this place, you can upload them here. Photos will be available to all users after verification by the moderator.

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[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

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Our report for Seamill 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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