Port Isaac surfForecast / Cornwall (North) / UK

information circle12 Day Weather and Surf, issued 6 pm Sunday 31 Aug 2025 BST
Forecast update in hr  min  s Forecast update imminent
Port Isaac surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Port Isaac sea temperature is
17.4° C
(Which is slightly warmer than usual)


Best Forecast Surf Conditions for Port Isaac this week:

The surf forecast for Port Isaac over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 03) at 10PM. The primary swell is predicted to be 3.5m and 11s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Port Isaac in the next 12 days are 4.5m 12s and forecast to arrive on Wednesday (Sep 03) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 4s period and expected on Wednesday (Sep 03) at 7AM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+)10PM (Wed 3rd Sep)11ft (3.5m) 11s
Best Surf10PM (Wed 3rd Sep)11ft (3.5m) 11s
Most Powerful 4PM (Wed 3rd Sep)15ft (4.5m) 12s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Heavy rain (total 26mm), heaviest during Mon night. Very mild (max 18°C on Tue night, min 14°C on Mon night). Winds increasing (light winds from the WNW on Tue morning, near gales from the SW by Wed morning).

Days 3-6 Weather Summary Moderate rain (total 11mm), heaviest on Wed night. Very mild (max 18°C on Sat morning, min 14°C on Fri night). Winds decreasing (near gales from the WSW on Wed afternoon, light winds from the S by Fri night).

Sun
31
Monday
01
Tuesday
02
Wednesday
03
Thursday
04
Friday
05
Saturday
06
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
1
2
1
1
2
1
0
1
0
0
1
0
0
1
1
0
2
0
0
1
0
Swell
Height Map
Wave Height (m) & direction (?)
3
W
2.5
W
3
W
2.5
W
2
W
1.5
W
1.4
W
1.4
W
2.4
WSW
4.5
W
3
W
3
W
3
W
3
W
2.1
W
1.7
W
1.3
W
1.2
W
1.1
W
1.7
WSW
1.3
W
Period(s) (?)1313121211109910121111111110101099109
Wave
Graph
(?)Metric surfscale
Energy (?)31362342237621891029441340320106458752386230122412311973598331220193563288
Wind
(km/h)
40
SW
25
SSW
30
W
30
W
20
SSW
20
WSW
20
NNW
20
SSW
55
SSW
60
WSW
40
SW
35
WSW
45
WSW
35
W
20
WSW
25
WSW
15
S
30
SSE
25
S
25
SSE
25
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
crosscrosscross-
off
cross-
off
oncross-
off
cross-
off
crosscross-
off
crosscrosscrosscrosscrossoffoffoffoffcross
High Tide
/ height (m)
11:25PM
4.85
11:58AM
4.71
12:41AM
4.52
1:30PM
4.54
2:23AM
4.53
3:06PM
4.79
3:42AM
4.91
4:09PM
5.30
4:35AM
5.44
4:55PM
5.91
5:17AM
6.02
5:35PM
6.51
5:55AM
6.55
Low Tide
/ height (m)
5:09PM
2.19
5:38AM
2.41
6:20PM
2.55
7:07AM
2.65
8:08PM
2.61
8:52AM
2.51
9:36PM
2.28
10:02AM
2.07
10:33PM
1.75
10:51AM
1.52
11:16PM
1.16
11:31AM
0.97
11:54PM
0.61
12:08PM
0.47
Sun
31
Monday
01
Tuesday
02
Wednesday
03
Thursday
04
Friday
05
Saturday
06
Sunrise--6:31--6:33--6:35--6:37--6:37--6:39--6:41
Sunset8:07--8:05--8:02--8:00--7:59--7:55--7:53--
part cloud
light rain
rain showers
rain showers
rain showers
rain showers
part cloud
light rain
rain showers
rain showers
rain showers
rain showers
rain showers
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
rain showers
rain showers
Rain (mm)
-54281-152612------22
Temp. °C171617171517171818161616151617171518171817
Feels °C (?)101211121114141195996912131213121513
  • 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

Eyeball surf reportRecent Eyeball Surf Reports for Cornwall (North)

  1. weather stationWind Update Offshore wind has become cross-off at Port Isaac (light winds from the S at Newquay Airport 21 km from Port Isaac). A 3.0m groundswell from the W

    Port Isaac
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21 km away, 1 h 32 min ago

19 km/h
S
0.0
17.4
Air / Water (°C)
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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 Port Isaac 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.


Information about the Port Isaac Surf forecast

The above surf forecast table for Port Isaac provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Port Isaac can be found by selecting the local surf guide option on the grey menu. Our Port Isaac 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 (Port Isaac) 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 Port Isaac 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.

Are you planning a holiday in North Cornwall? If you are looking for accommodation near Port Isaac, camping, hotels and holiday cottages in North Cornwall, consider staying in Padstow which is 8 km (5 miles) away. Other places in and around North Cornwall where you can find information about places to rent, and car hire include Bodmin which is 15 km (9 miles) away, Newquay, Par and Saint Austell.

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