Cemlyn Sea Temperature
Looking to find out what the sea water temperature in Cemlyn is for today and the next few days? Below are data and charts that will give you information about sea temperatures in Cemlyn and nearby locations.
Water temperature in Cemlyn right now
Below is the current sea temperature for Cemlyn, United Kingdom on 12th July 2025.
13.8° C
(56.84° F)
- yesterday: 13.81° C (56.86° F)
- a week ago: 14.56° C (58.21° F)
Water at this temperature is cold and will feel very cold initially, but the body will get used to it and longer swims are possible. Experienced swimmers can manage several hours of swimming, however hypothermia is still a very big risk.
The average sea temperature for Cemlyn on July 12th over the last 10 years is 13.75° C (56.75° F), with a low temperature of 12.87° C (55.17° F) and a high of 14.59° C (58.26° F).
Analysis and forecast for Cemlyn water temperatures
The water temperature in Cemlyn today is higher than the average temperature of 13.75° C (56.75° F) and the temperature on this day last year, 12th July 2024, was 13.69° C (56.64° F).
The chart and table below shows the change in water temperature in Cemlyn over the last 30 days:
The actual nearshore temperatures may vary by several degrees and this can also be heavily affected by weather. Strong winds can cause cold, deep waters to replace the surface waters that had been warmed by the sun, and heavy rain can also reduce the temperature of the sea surface temperature as well.
Water temperature in Cemlyn by month
The chart below shows the monthly average water temperature in Cemlyn.
For more detailed information on how the sea temperature in Cemlyn changes for each month of the year, choose from the months below.
Cemlyn map and nearby water temperatures
Locations near Cemlyn
The highest temperature in United Kingdom today is 18.19° C (64.74° F) in Brightlingsea. The lowest is in Sumburgh, where the temperature of the water is 10.7° C (51.26° F).
Why measure sea surface temperatures (SST) in Cemlyn?
The ocean covers about 71% of the Earth's surface, and scientists record the sea surface temperature (SST) of locations such as Cemlyn because they want to understand and learn how the ocean communicates with the atomosphere of Earth.
SST is one measure that provides information on the global climate, and it can be used to predict the weather in Cemlyn as well as atmospheric model simulations and to study marine ecosystems in the area.
Data source and citation
Raw data for the calculations made to find the sea surface temperature in Cemlyn comes from the National Oceanic and Atmospheric Administration (NOAA) and their 1/4° daily Optimum Interpolation Sea Surface Temperature.
The water temperature data is constructed by combining observations from different platforms (satellites, ships, buoys, and Argo floats) on a regular global grid. A spatially complete sea surface temperature map is then built by interpolating to fill in gaps in the data.
If you'd like to use any of the information above in the format it is presented, please use the citation tool below.
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<a href="http://seatemperatures.net/europe/united-kingdom/cemlyn/">Cemlyn Sea Temperature</a>
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"Cemlyn Sea Temperature". SeaTemperatures.net. Accessed on July 12, 2025. http://seatemperatures.net/europe/united-kingdom/cemlyn/.
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"Cemlyn Sea Temperature". SeaTemperatures.net, http://seatemperatures.net/europe/united-kingdom/cemlyn/. Accessed 12 July, 2025
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Cemlyn Sea Temperature. SeaTemperatures.net. Retrieved from http://seatemperatures.net/europe/united-kingdom/cemlyn/.