Port Isaac surfForecast / Cornwall (North) / UK

information circle12 Day Weather and Surf, issued 5 am Friday 05 Dec 2025 GMT
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
12.6° C
(Which is 1.0°C warmer than normal for this time of year)


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 Saturday (Dec 06) at 9PM. The primary swell is predicted to be 4.5m and 16s 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 5.0m 21s and forecast to arrive on Friday (Dec 12) at 6AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 5s period and expected on Tuesday (Dec 09) at 6AM.

Wave TypeTime (GMT) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Sat 6th Dec)15ft (4.5m) 16s
Best Surf 9PM (Sat 6th Dec)15ft (4.5m) 16s
Most Powerful 6AM (Fri 12th Dec)16ft (5.0m) 21s

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 29mm), heaviest during Fri afternoon. Very mild (max 14°C on Sat night, min 10°C on Fri morning). Winds decreasing (near gales from the SSE on Fri morning, moderate winds from the SSW by Sun night).

Days 3-6 Weather Summary Heavy rain (total 23mm), heaviest during Mon night. Very mild (max 14°C on Mon night, min 10°C on Wed morning). Mainly strong winds.

Friday
05
Saturday
06
Sunday
07
Monday
08
Tuesday
09
Wednesday
10
Thursday
11
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
2
0
0
0
0
!
1
0
3
2
3
2
3
!
3
1
1
3
1
1
0
Swell
Height Map
Wave Height (m) & direction (?)
2.3
W
1.9
W
4
W
6
W
5.5
W
4
W
3
W
3.5
WSW
2.4
W
2.2
W
1.8
W
3
W
3
W
3.5
W
3
W
2.5
W
3
W
2.4
W
3
WSW
3
W
1.9
WNW
Period(s) (?)151012161615141212121917161514131212121222
Wave
Graph
(?)Metric surfscale
Energy kJ (?)2215724468118723168747189285832191626138824075963403056223562224325441520247125213676
Wind
(km/h)
35
S
40
SSW
55
SW
55
WSW
45
WSW
25
SSW
40
SW
50
SW
20
SSW
30
SW
20
S
45
SSW
30
SW
15
W
20
SW
30
WSW
30
W
25
SSW
35
S
40
S
40
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offcross-
off
cross-
off
crosscrosscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
crosscross-
off
crosscrosscross-
off
cross-
off
cross-
off
cross
High Tide
/ height (m)
5:27PM
7.11
5:50AM
7.26
6:15PM
7.06
6:37AM
7.21
7:03PM
6.85
7:25AM
7.01
7:52PM
6.52
8:14AM
6.69
8:42PM
6.11
9:06AM
6.29
9:35PM
5.70
10:01AM
5.87
10:34PM
5.34
Low Tide
/ height (m)
11:20AM
0.10
11:42PM
0.15
12:09PM
0.04
12:30AM
0.23
12:58PM
0.17
1:17AM
0.43
1:48PM
0.43
2:06AM
0.74
2:40PM
0.79
2:57AM
1.11
3:34PM
1.19
3:51AM
1.49
4:32PM
1.55
Friday
05
Saturday
06
Sunday
07
Monday
08
Tuesday
09
Wednesday
10
Thursday
11
Sunrise8:03--8:03--8:04--8:06--8:07--8:07--8:08--
Sunset-4:15--4:15--4:15--4:15--4:14--4:14--4:14-
light rain
rain showers
light rain
light rain
rain showers
mod rain
light rain
rain showers
part cloud
light rain
light rain
heavy rain
light rain
light rain
light rain
rain showers
rain showers
part cloud
cloud
cloud
rain showers
Rain (mm)
28421651-211223111---3
Temp. °C101211111114141412131314131112111011121212
Feels °C (?)2510187557106888535443
  • 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 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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