Water temperature in Fishguard

This data the coastal Fishguard 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 Fishguard

Water temperature in Fishguard today is 16.3°C. Based on our historical data over a period of ten years, the warmest water in this day in Fishguard was recorded in 2023 and was 16.7°C, and the coldest was recorded in 2015 at 15°C. Sea water temperature in Fishguard is expected to drop to 15.4°C in the next 10 days. September average water temperature in Fishguard is 15.8°C, the minimum temperature is 14.6°C, and the maximum is 17.5°C.

Throughout the year, the water temperature in Fishguard does not rise above 20°C and therefore is not suitable for comfortable swimming. The average water temperature in Fishguard in winter reaches 9.4°C, in spring 9.4°C, in summer the average temperature rises to 14.5°C, and in autumn it is 14.4°C.

Fishguard water temperature now

The sea salinity in Fishguard is 33.83‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Fishguard 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 Fishguard. 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 Fishguard. Data in table shown for 18 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Fishguard

Fishguard weather forecast

Current temperature and weather

Data in a table show Fishguard temperature today (18 September 2025). For more information and forecast for a few days, go to the weather forecast Fishguard.

0-3 h	3-6 h	6-9 h	9-12 h
14.1°C	14.7°C	16.2°C	16.5°C

12-15 h	15-18 h	18-21 h	21-24 h
17.5°C	16.9°C	16.6°C	16.2°C

Fishguard water temperature by month

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

The nearest beaches and cities from Fishguard 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
Goodwick	16.3°C	17°C		1.08 m
Cwm-yr-Eglwys	16.3°C	17°C		1.62 m
Newport	16.3°C	17°C		1.8 m
Porthgain	16.1°C	17°C		1.78 m
Abereiddy	16°C	16°C		1.78 m
Poppit Sands Beach	16.2°C	17°C		1.46 m
St Davids	16°C	16°C		1.71 m
Whitesands Bay	16°C	16°C		1.71 m
Newgale	16.1°C	17°C		1.71 m
Mwnt	16.3°C	17°C		1.46 m

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Our report for Fishguard 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.