Porthtowan surfForecast / Cornwall (North) / UK

information circle48hr Weather and Surf, issued 5 am Thursday 11 Dec 2025 GMT
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
12.2° C
(Which is slightly warmer than usual)


How big are the waves at Porthtowan today?

The current surf forecast for Porthtowan at 11AM is: 3.5m 13s primary swell from a West-southwest direction and 0.1m 24s secondary swell from a West direction (forecast issued at 05:00am December 11). The wind direction is predicted to be cross-offshore and the swell rating is 11.

Time (GMT) & DateWave HeightWave Period
Morning (11 Dec)11ft (3.5m)13s
Afternoon (11 Dec)15ft (4.5m)14s
Evening (11 Dec)15ft (4.5m)14s

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

Updates in  hr  min  s Forecast update imminent
Thursday
11
Friday
12
Saturday
13
Sun
14
3AM6AM9AM12PM3PM6PM9PM0AM3AM6AM9AM12PM3PM6PM9PM0AM3AM6AM9AM12PM3PM6PM9PM0AM
Rating
(10 max)
3
2
!
!
!
!
!
!
0
!
!
!
!
!
!
!
!
!
!
!
!
3
!
2
Swell
Height Map
Wave Height (m) & direction (?)
3
W
3
W
3.5
WSW
4
WSW
4.5
WSW
4.5
WSW
4.5
WSW
4.5
WSW
4.5
W
4.5
W
5
W
5.5
W
5.5
W
5
W
5
W
4.5
W
4.5
W
4
W
3.5
W
3.5
W
3.5
W
3
W
3.5
W
3
WSW
Period(s) (?)141413131414141615151919191818181716161615141413
Wave
Graph
(?)Metric surfscale
Energy kJ (?)37623005428747587425810879791040291658885171482074820021175881573113319111528178636354464982420637883449
Wind
(km/h)
35
S
35
S
40
S
40
S
40
S
25
S
30
S
15
SW
30
NW
20
NW
10
WSW
20
WSW
20
W
15
W
15
WSW
15
WSW
15
SW
15
SW
25
SSW
30
SW
30
SSW
35
SSW
35
SSW
35
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
ononcross-
on
cross-
on
cross-
on
cross-
on
cross-
on
crosscrosscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
High Tide
/ height (m)
9:41AM
5.40
10:15PM
4.90
10:43AM
5.08
11:20PM
4.70
11:49AM
4.87
Low Tide
/ height (m)
4:19PM
1.39
4:38AM
1.65
5:20PM
1.63
5:42AM
1.84
6:23PM
1.76
Thursday
11
Friday
12
Saturday
13
Sun
14
Sunrise--8:08-------8:10-------8:11-----
Sunset----4:16-------4:16-------4:16---
clear
clear
part cloud
part cloud
part cloud
cloud
cloud
mod rain
light rain
cloud
cloud
cloud
cloud
cloud
cloud
clear
clear
part cloud
clear
clear
cloud
cloud
cloud
cloud
Rain (mm)
-------71---------------
Temp. °C111112121212111199911101010101010101010101011
Feels °C (?)445557582467567766533334
  • 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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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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