Porthtowan surfForecast / Cornwall (North) / UK

information circle12 Day Weather and Surf, issued 5 am Friday 21 Nov 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
13.4° C
(Which is 1.3°C warmer than normal for this time of year)


Best Forecast Surf Conditions for Porthtowan this week:

The surf forecast for Porthtowan over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Nov 26) at 9PM. The primary swell is predicted to be 1.6m and 6s period with a secondary swell of 0.1m and 15s. Another secondary swell of 0.1m and 12s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Porthtowan in the next 12 days are 4.5m 11s and forecast to arrive on Sunday (Nov 23) at 6PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 6s period and expected on Saturday (Nov 22) at 3AM.

Wave TypeTime (GMT) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Wed 26th Nov)5ft (1.6m) 6s
Best Surf 9PM (Wed 26th Nov)5ft (1.6m) 6s
Most Powerful 6PM (Sun 23rd Nov)15ft (4.5m) 11s

Table - best surf conditions forecast for Porthtowan over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Light rain (total 9mm), mostly falling on Fri night. Very mild (max 12°C on Sat morning, min 7°C on Fri morning). Winds increasing (light winds from the ENE on Fri morning, strong winds from the WNW by Sun night).

Days 3-6 Weather Summary Moderate rain (total 14mm), heaviest on Mon morning. Very mild (max 12°C on Wed night, min 9°C on Mon morning). Winds decreasing (near gales from the NNW on Mon morning, light winds from the WNW by Wed morning).

Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.6
W
0.8
W
1.1
W
1
W
1
W
1
W
3.5
W
4.5
W
4
WNW
3.5
WNW
2.4
WNW
1.6
WNW
2.1
NNW
1.3
W
1.2
W
1
W
1.2
W
1.8
W
1.7
W
1.7
W
1.9
W
Period(s) (?)101413131312911101010107121110107998
Wave
Graph
(?)Metric surfscale
Energy kJ (?)7525742334033530020034215380926081130588385480338212273340449421512
Wind
(km/h)
5
ENE
10
SW
30
SSW
25
NW
15
W
30
SSW
40
WNW
35
WNW
40
WNW
45
NNW
50
N
35
N
30
N
35
NNW
20
N
5
WNW
15
WSW
15
SW
25
SW
25
SW
25
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
crosscross-
off
oncross-
on
cross-
off
cross-
on
cross-
on
cross-
on
oncross-
on
cross-
on
cross-
on
cross-
on
cross-
on
oncrosscrosscrosscrosscross-
off
High Tide
/ height (m)
5:36PM
5.81
5:52AM
5.91
6:10PM
5.71
6:26AM
5.80
6:44PM
5.54
7:02AM
5.64
7:21PM
5.33
7:40AM
5.44
8:01PM
5.10
8:23AM
5.23
8:48PM
4.89
9:14AM
5.06
9:45PM
4.73
Low Tide
/ height (m)
11:36AM
0.76
11:50PM
0.83
12:10PM
0.83
12:23AM
0.94
12:45PM
0.97
12:58AM
1.10
1:22PM
1.17
1:35AM
1.30
2:03PM
1.38
2:16AM
1.51
2:50PM
1.58
3:06AM
1.70
3:46PM
1.71
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Sunrise7:43--7:45--7:46--7:48--7:48--7:50--7:52--
Sunset-4:29--4:28--4:27--4:25--4:24--4:23--4:23-
clear
part cloud
light rain
light rain
cloud
rain showers
cloud
cloud
rain showers
light rain
rain showers
mod rain
light rain
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
Rain (mm)
--41-2--24361--------
Temp. °C781012111211101010101010101091012121111
Feels °C (?)442876211-1-11224668766
  • 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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Information about the Porthtowan Surf forecast

The above surf forecast table for Porthtowan provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Porthtowan can be found by selecting the local surf guide option on the grey menu. Our Porthtowan surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Porthtowan) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Porthtowan may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Porthtowan is 8 km (5 miles) from Camborne. If you plan a holiday in North Cornwall, look for hotels and other accommodation in Camborne. Camborne has rooms for a wide range of budgets as well as car hire and transport links.

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