Trevone Bay surfForecast / Cornwall (North) / UK

information circle48hr Weather and Surf, issued 12 pm Thursday 21 May 2026 BST
Forecast update in hr  min  s Forecast update imminent
Trevone Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Trevone Bay sea temperature is
12.6° C
(Which is slightly warmer than usual)

How big are the waves at Trevone Bay today?

The current surf forecast for Trevone Bay at 5PM is: 1.5m 10s primary swell from a West direction (forecast issued at 12:00pm May 21). The wind direction is predicted to be offshore and the swell rating is 2.

Time (BST) & DateWave HeightWave Period
Morning (21 May)6ft (1.8m)11s
Afternoon (21 May)5ft (1.6m)11s
Evening (21 May)4.5ft (1.4m)10s

Table - waves today at Trevone Bay. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Very mild (max 18°C on Fri morning, min 14°C on Thu night). Winds decreasing (fresh winds from the SE on Thu night, calm by Fri night).

Thu
21
Friday
22
Saturday
23
Sun
24
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
Rating
(10 max)
2
1
2
1
1
2
2
3
3
2
1
2
2
2
2
1
0
1
0
0
0
0
0
0
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
1.7
W
11
1.6
W
11
1.5
W
10
1.5
W
10
1.4
W
10
1.5
W
10
1.6
W
10
1.7
W
11
1.7
W
11
1.6
W
11
1.6
W
11
1.5
W
10
1.4
WSW
10
1.4
WSW
10
1.3
W
10
1.3
W
10
1.3
W
10
1.2
W
10
1.2
W
10
1.2
W
10
1.1
W
10
1.1
W
10
1
W
10
0.9
W
9
Wave Graph
Metric surfscale
Energy kJ
694
584
506
476
400
458
541
707
694
606
606
496
426
426
346
339
339
290
284
273
230
225
183
139
Wind (km/h)
20
S
20
S
25
SSE
25
SE
30
SE
20
SSE
15
SSE
15
SSE
15
S
10
SSW
15
SW
5
SSW
5
W
0
N
5
WNW
10
NE
10
N
10
N
15
N
15
N
15
NNE
10
NE
10
NE
10
NE
cross-off
cross-off
off
off
off
off
off
off
cross-off
cross-off
cross
glassy
glassy
glassy
glassy
cross
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
cross
High Tide
9:23AM6.02m
9:49PM6.14m
10:21AM5.59m
10:49PM5.76m
11:27AM5.24m
11:57PM5.46m
Low Tide
3:42PM0.98m
4:21AM1.01m
4:43PM1.35m
5:27AM1.35m
5:51PM1.63m
6:38AM1.55m
cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
cloud
cloud
cloud
cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:24
5:22
5:22
5:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:08
9:09
9:10
9:12
Temp °C
15
16
16
15
15
15
14
14
16
18
18
18
15
15
15
14
15
15
16
15
15
16
17
17
12
12
11
10
10
11
12
12
15
17
17
18
15
15
15
13
13
14
14
12
12
14
15
15
Swell 1
Height (m)
Direction
Period (s)
1.7
W
11
1.6
W
11
1.5
W
10
1.5
W
10
1.4
W
10
1.5
W
10
1.6
W
10
1.7
W
11
1.7
W
11
1.6
W
11
1.6
W
11
1.5
W
10
1.4
WSW
10
1.4
WSW
10
1.3
W
10
1.3
W
10
1.3
W
10
1.2
W
10
1.2
W
10
1.2
W
10
1.1
W
10
1.1
W
10
1
W
10
0.9
W
9
Energy kJ
694
584
506
476
400
458
541
707
694
606
606
496
426
426
346
339
339
290
284
273
230
225
183
139
Swell 2
Height (m)
Direction
Period (s)
0.1
SW
14
0.1
SW
13
0.1
SW
13
0.1
SW
14
0.1
SW
13
0.1
SW
14
0.1
SW
14
0.1
SW
14
0.1
SW
14
0.1
SW
14
Energy kJ
8
7
7
7
7
8
8
8
8
8
Swell 3
Height (m)
Direction
Period (s)
Energy kJ
Wind waves
Height (m)
Direction
Period (s)
0.4
SSE
3
0.6
SSE
3
0.4
SSE
3
Energy kJ
4
9
4
Nearest Offshore or Glassy
Rating
(10 max)
2
2
2
2
2
2
2
2
2
2
2
2
2
2
1
2
1
1
1
1
1
1
1
1
Distance (km)
8
8
4
11
11
4
2
2
2
2
2
2
2
2
2
4
36
45
45
43
4
4
4
4
Best forecast wave conditions in North Cornwall
Rating
(10 max)
2
2
3
3
3
2
3
3
3
2
2
3
3
3
2
2
2
2
1
1
Best forecast wave conditions in United Kingdom
Rating
(10 max)
2
3
3
3
3
2
3
3
3
3
3
3
3
3
2
2
2
2
2
1
2
2
1
2
Header Global
Rating
(10 max)
5
5
5
5
5
5
5
7
7
7
6
6
7
8
6
7
8
8
7
7
6
6
5
5
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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