Port Isaac surfForecast / Cornwall (North) / UK

information circle12 Day Weather and Surf, issued 11 pm Friday 19 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
11.6° C
(Which is slightly warmer than usual)
Nearby Cam: 6km away, Polzeath beach community Webcam


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 Sunday (Dec 21) at 3AM. The primary swell is predicted to be 2.5m 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 3.0m 16s and forecast to arrive on Sunday (Dec 21) at 6AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Friday (Dec 26) at 6PM.

Wave TypeTime (GMT) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Sun 21st Dec)8ft (2.5m) 16s
Best Surf 6AM (Sun 21st Dec)10ft (3.0m) 16s
Most Powerful 6AM (Sun 21st Dec)10ft (3.0m) 16s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Moderate rain (total 13mm), heaviest on Sat afternoon. Very mild (max 11°C on Mon morning, min 8°C on Fri night). Winds decreasing (strong winds from the SSE on Sat morning, calm by Sat night).

Days 3-6 Weather Summary Mostly dry. Icy conditions (max 10°C on Mon night, min 0°C on Wed night). Winds increasing (calm on Mon night, strong winds from the N by Tue night).

Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Fri
26
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
4
1
1
3
4
2
2
2
0
2
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
2.4
W
1.8
W
1.8
W
2.1
W
3
W
2.5
W
1.9
W
1.5
W
1.3
W
1.1
W
1
W
0.9
W
1.2
W
0.9
WNW
0.8
WNW
0.7
W
0.6
W
0.6
W
0.8
W
0.9
W
0.9
W
Period(s) (?)141312121515141312121111131213131212121212
Wave
Graph
(?)Metric surfscale
Energy kJ (?)23911107918124541182942152578253033323518249025222915896108196224232
Wind
(km/h)
20
S
40
SSE
40
SE
20
S
15
E
20
ENE
15
NE
15
ENE
10
NE
5
E
15
N
30
N
40
N
35
NE
35
ENE
30
E
25
E
20
ENE
25
NE
35
NE
35
NE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffoffcross-
off
cross-
off
crosscrosscrosscross-
on
cross-
off
cross-
on
oncross-
on
cross-
on
crosscross-
off
cross-
off
crosscrosscross-
on
cross
High Tide
/ height (m)
5:24AM
6.20
5:43PM
6.11
6:01AM
6.32
6:19PM
6.16
6:37AM
6.39
6:55PM
6.16
7:13AM
6.39
7:32PM
6.10
7:50AM
6.34
8:10PM
6.00
8:30AM
6.24
8:52PM
5.87
9:13AM
6.10
Low Tide
/ height (m)
11:18PM
1.14
11:40AM
1.04
11:54PM
1.02
12:17PM
0.96
12:30AM
0.97
12:53PM
0.95
1:05AM
0.97
1:29PM
0.99
1:41AM
1.03
2:07PM
1.07
2:18AM
1.14
2:47PM
1.17
3:00AM
1.29
3:31PM
1.30
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Fri
26
Sunrise-8:17--8:17--8:18--8:18--8:18--8:18--8:18-
Sunset--4:15--4:15--4:16--4:16--4:17--4:17--4:19
clear
part cloud
mod rain
rain showers
light rain
cloud
light rain
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
part cloud
clear
clear
clear
cloud
cloud
Rain (mm)
--611-5--------------
Temp. °C91010999101111101010976313344
Feels °C (?)5243446898741-1-2-5-6-3-5-5-5
  • 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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