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Trefor Sea Temperature in August

Gwynedd, United Kingdom

July Trefor year-round → September

Average sea temperature for Trefor, United Kingdom across August, based on 10 years of daily readings.

Average

17.45° C

High

19.17° C

Low

16.09° C

At this temperature, water will feel cold compared to a swimming pool, but with a bit of experience and practice most people will find the water relatively comfortable to swim in.

August is the 1st warmest of 12 months at Trefor. On average the water sits 5.0° than the year-round mean of 12.48° C.

Compared to July, August is 0.8° warmer than (16.67° C in July). By September the water is usually 16.65° C.

Trefor Day-by-Day Water Temperature in August

10-year low, average and high

15.5° C
16.6° C
17.8° C
18.9° C
20.0° C
1
5
10
15
20
25
31
Day-by-day low and high band with the 10-year daily average through August. Range Average

Each vertical bar above is one day of August. The shaded band covers the range the water has reached on that day across the last 10 years — the lowest reading at the bottom, the highest at the top. The line running through the bars is the daily average over those 10 years, so you can see the typical shape of the month at Trefor.

A narrow band means the temperature on that day has stayed close to the average year on year. A taller band means it has swung more, often because of changeable weather around that time of year. Hovering a day pulls up its low, average, and high.

August Water Temperature Table for Trefor

10-year daily averages

Day Average Low High
August 1 17.3° C 16.38° C 17.88° C
August 2 17.25° C 16.15° C 17.87° C
August 3 17.18° C 16.17° C 18.09° C
August 4 17.15° C 16.09° C 18.24° C
August 5 17.01° C 16.17° C 17.94° C
August 6 17.09° C 16.4° C 18.06° C
August 7 17.22° C 16.5° C 18.72° C
August 8 17.23° C 16.19° C 18.5° C
August 9 17.34° C 16.46° C 18.26° C
August 10 17.48° C 16.83° C 18.47° C
August 11 17.67° C 16.94° C 18.89° C
August 12 17.86° C 17.1° C 19.15° C
August 13 17.92° C 17.15° C 19.12° C
August 14 18.02° C 17.16° C 19.17° C
August 15 18.07° C 16.78° C 18.92° C
August 16 18.02° C 16.67° C 18.91° C
August 17 17.7° C 16.83° C 18.69° C
August 18 17.44° C 16.33° C 18.58° C
August 19 17.3° C 16.25° C 18.49° C
August 20 17.27° C 16.26° C 18.42° C
August 21 17.26° C 16.3° C 18.39° C
August 22 17.38° C 16.4° C 18.39° C
August 23 17.44° C 16.54° C 18.26° C
August 24 17.48° C 16.53° C 18.36° C
August 25 17.6° C 16.5° C 18.37° C
August 26 17.61° C 16.42° C 18.27° C
August 27 17.47° C 16.33° C 18.27° C
August 28 17.37° C 16.2° C 18.18° C
August 29 17.35° C 16.21° C 18.35° C
August 30 17.3° C 16.36° C 18.32° C
August 31 17.22° C 16.43° C 18.25° C

Where August Sits in the Year

August highlighted

3.0° C
7.9° C
12.8° C
17.6° C
22.5° C
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
8.41° C
8.05° C
8.54° C
10.15° C
12.7° C
14.99° C
16.67° C
17.45° C
16.65° C
14.49° C
12.05° C
9.62° C
10-year monthly history for Trefor. Bars span historical low to high; the line marks the monthly average. Range Average
January → February → March → April → May → June → July → August → September → October → November → December →

Nearby Locations in August

Compare other United Kingdom water for the same month

Trefor Location

53.0000, -4.4167

53.00000, -4.41670 View on OpenStreetMap →

Trefor sits at 53.0000°N, 4.4167°W, on the coast of Gwynedd, United Kingdom. The marker on the map shows the spot the readings on this page come from. It usually sits a short distance from the town centre, out on the open water itself, so the numbers stay tied to the coast rather than a generic point inland.

Coastlines bend, headlands focus the water, and the temperature can run noticeably differently between two beaches that look close together on a map. Comparing nearby locations is a quick way to see how local geography is shaping the readings.

Nearest locations to Trefor