Porthtowan surfForecast / Cornwall (North) / UK

information circle48hr Weather and Surf, issued 12 am Tuesday 19 May 2026 BST
Forecast update in hr  min  s Forecast update imminent
Porthtowan surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Porthtowan sea temperature is
12.4° C
(Which is normal for this time of year)

How big are the waves at Porthtowan today?

The current surf forecast for Porthtowan at 8AM is: 2.5m 8s primary swell from a Southwest direction and 0.1m 15s secondary swell from a West direction (forecast issued at 12:00am May 19). An open ocean swell of 0.1m 18s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (BST) & DateWave HeightWave Period
Morning (19 May)8ft (2.5m)8s
Afternoon (19 May)10ft (3.0m)8s
Evening (19 May)10ft (3.0m)9s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 5mm), mostly falling on Mon night. Very mild (max 17°C on Thu morning, min 12°C on Mon night). Winds decreasing (strong winds from the SSW on Mon night, light winds from the S by Wed night).

Tuesday
19
Wednesday
20
Thursday
21
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
10 AM
1 PM
4 PM
7 PM
10 PM
Rating
(10 max)
0
1
1
0
0
0
0
0
!
!
!
!
1
1
3
3
3
2
2
2
2
2
2
2
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
2.5
SSW
7
2.5
SW
8
2.5
SW
8
2.5
SW
8
2.5
SW
8
3
SW
8
3
WSW
9
3
WSW
9
3.5
WSW
16
4
WSW
14
4
W
14
3.5
W
14
3
W
13
3
W
13
2.5
W
13
2.4
W
12
2.3
WSW
12
2.1
WSW
12
2
WSW
12
1.9
WSW
11
1.8
WSW
11
1.8
WSW
10
1.7
WSW
10
1.6
WSW
10
Wave Graph
Metric surfscale
Energy kJ
620
789
833
886
941
1151
1437
1770
6490
6331
5808
4769
3662
2884
2469
1756
1413
1190
1047
828
705
679
596
566
Wind (km/h)
40
SSW
30
SSW
30
SSW
30
SW
35
SW
40
SW
40
SW
35
WSW
30
WSW
25
WSW
25
WSW
25
WSW
25
SW
25
SW
20
SSW
20
S
20
S
20
S
15
S
20
S
20
S
20
SSE
20
SE
20
SE
cross-off
cross-off
cross-off
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
High Tide
7:31AM6.47m
7:53PM6.54m
8:20AM6.16m
8:44PM6.25m
9:13AM5.76m
9:39PM5.88m
Low Tide
1:31AM0.06m
1:52PM0.29m
2:21AM0.27m
2:42PM0.58m
3:16AM0.59m
3:37PM0.93m
light rain
cloud
cloud
light rain
part cloud
rain showers
rain showers
cloud
clear
clear
part cloud
part cloud
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:28
5:28
5:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:06
9:07
9:07
1
1
1
1
Temp °C
13
13
13
13
14
14
13
12
12
12
12
13
15
15
14
13
13
13
14
15
17
17
15
15
6
8
7
7
7
6
6
5
6
7
7
8
10
10
11
10
9
10
11
11
13
13
11
11
Swell 1
Height (m)
Direction
Period (s)
0.7
WNW
10
0.3
WNW
10
0.1
W
15
0.2
W
15
0.2
W
15
0.2
W
14
0.1
S
18
0.9
WSW
16
1.2
WSW
16
4
WSW
14
4
W
14
3.5
W
14
3
W
13
3
W
13
2.5
W
13
2.4
W
12
2.3
WSW
12
2.1
WSW
12
2
WSW
12
1.9
WSW
11
1.8
WSW
11
1.8
WSW
10
1.7
WSW
10
1.6
WSW
10
Energy kJ
100
20
4
17
17
16
6
480
733
6275
5808
4769
3662
2884
2469
1756
1413
1190
1047
828
705
679
596
566
Swell 2
Height (m)
Direction
Period (s)
0.1
W
16
0.1
W
16
0.1
S
19
0.1
S
18
0.1
S
18
0.2
WSW
19
0.3
W
13
0.6
W
13
0.9
S
7
0.7
S
7
0.1
SW
16
0.1
SW
16
0.1
SW
16
0.1
SW
15
0.1
SW
15
0.1
SW
15
0.1
SW
15
0.1
SW
15
Energy kJ
5
5
7
6
6
34
31
130
86
52
10
10
10
9
9
9
8
8
Swell 3
Height (m)
Direction
Period (s)
0.1
S
19
0.1
SW
18
0.1
W
16
Energy kJ
7
12
5
Wind waves
Height (m)
Direction
Period (s)
2.5
SSW
7
2.5
SW
8
2.5
SW
8
2.5
SW
8
2.5
SW
8
3
SW
8
3
WSW
9
3
WSW
9
3.5
WSW
16
4
W
14
1.1
SSW
7
0.6
SE
3
Energy kJ
620
789
833
886
941
1151
1437
1770
6490
6331
125
7
Nearest Offshore or Glassy
Rating
(10 max)
2
2
1
1
1
1
1
4
1
4
3
4
4
4
4
3
3
3
3
2
3
3
2
2
Distance (km)
403
403
503
513
503
394
394
521
556
57
57
210
210
210
17
16
16
16
16
16
5
5
0
0
Best forecast wave conditions in North Cornwall
Rating
(10 max)
4
4
3
3
3
3
3
3
3
3
Best forecast wave conditions in United Kingdom
Rating
(10 max)
2
2
1
1
1
1
1
3
4
4
2
2
3
4
4
3
3
3
3
3
3
3
3
Header Global
Rating
(10 max)
4
4
4
4
4
4
4
5
5
5
5
4
5
4
5
5
4
4
5
4
4
4
4
4
  • 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

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Porthtowan surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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