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Gunwalloe Surf Forecast
/ Cornwall (South) (25 surf breaks) /
Surf Forecasts:
Gunwalloe surfForecast / Cornwall (South) / UK
12 Day Weather and Surf, issued 6 pm Tuesday 16 Sep 2025 BST
Best Forecast Surf Conditions for Gunwalloe this week:
The surf forecast for Gunwalloe over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Sep 21) at 1AM. The primary swell is predicted to be 4.5m and 10s period with a secondary swell of 0.2m and 14s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Gunwalloe in the next 12 days are 5.0m 10s and forecast to arrive on Sunday (Sep 21) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 11s period and expected on Sunday (Sep 21) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Sun 21st Sep) | 15ft (4.5m) 10s |
| Best Surf | 1AM (Sun 21st Sep) | 15ft (4.5m) 10s |
| Most Powerful | 4AM (Sun 21st Sep) | 16ft (5.0m) 10s |
Table - best surf conditions forecast for Gunwalloe over the next 12 days.
Short Range Forecast Light rain (total 3mm), mostly falling on Tue night. Very mild (max 18°C on Wed night, min 14°C on Tue afternoon). Mainly strong winds. | Days 3-6 Weather Summary Heavy rain (total 20mm), heaviest during Sat morning. Very mild (max 17°C on Fri afternoon, min 9°C on Sun night). Winds increasing (light winds from the SW on Fri night, strong winds from the WNW by Sat afternoon). | ||||||||||||||||||||||
Tue 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | |||||||||||||||||
| PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |||
Rating (10 max) | |||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||||
| Period(s) (?) | 12 | 11 | 10 | 10 | 13 | 12 | 11 | 10 | 10 | 10 | 9 | 9 | 9 | 10 | 8 | 7 | 6 | 13 | 13 | 12 | 16 | ||
Wave (?)Graph  | |||||||||||||||||||||||
 kJ (?) | 1530 | 867 | 1564 | 2172 | 3213 | 1818 | 1356 | 874 | 664 | 539 | 336 | 318 | 258 | 4064 | 135 | 114 | 21 | 17 | 17 | 15 | 20 | ||
Wind (km/h) | |||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | on | on | on | on | on | cross- on | cross- on | on | on | cross- on | cross | cross- off | cross- off | off | off | off | off | off | off | ||
High Tide / height (m) | 1:45AM 3.46 | 2:21PM 3.71 | 3:02AM 3.65 | 3:25PM 3.98 | 3:55AM 3.92 | 4:13PM 4.27 | 4:36AM 4.18 | 4:52PM 4.52 | 5:12AM 4.41 | 5:26PM 4.70 | 5:45AM 4.58 | 5:59PM 4.80 | 6:16AM 4.68 | ||||||||||
Low Tide / height (m) | 7:42PM 1.34 | 8:20AM 1.39 | 9:08PM 1.15 | 9:35AM 1.13 | 10:10PM 0.84 | 10:29AM 0.82 | 10:57PM 0.54 | 11:12AM 0.54 | 11:36PM 0.32 | 11:50AM 0.34 | 12:11AM 0.18 | 12:23PM 0.23 | 12:43AM 0.14 | 12:55PM 0.20 | |||||||||
Tue 16 | Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | |||||||||||||||||
| Sunrise | - | - | 6:58 | - | - | 7:00 | - | - | 7:01 | - | - | 7:03 | - | - | 7:03 | - | - | 7:05 | - | - | 7:07 | ||
| Sunset | 7:32 | - | - | 7:30 | - | - | 7:29 | - | - | 7:27 | - | - | 7:24 | - | - | 7:22 | - | - | 7:20 | - | - | ||
 |  | | |  |  | | |  | |  |  |  | |  | |  | | | | | |||
Rain (mm) | - | 3 | - | - | - | - | - | - | - | - | 1 | 9 | 2 | 1 | 5 | 2 | - | - | - | - | - | ||
| Temp. °C | 15 | 16 | 16 | 16 | 18 | 17 | 17 | 17 | 17 | 17 | 17 | 16 | 14 | 13 | 12 | 11 | 12 | 13 | 14 | 13 | 13 | ||
| Feels °C (?) | 11 | 10 | 11 | 12 | 14 | 13 | 14 | 15 | 15 | 15 | 16 | 16 | 10 | 8 | 5 | 6 | 6 | 7 | 8 | 7 | 9 | ||
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Live Wave Height (m)
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Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Cornwall (South)
Wind reports 3 km away suggest it is still onshore at Gunwalloe (light winds from the SSW at Culdrose Airport). 1.9m 11s groundswell from the W to make surfable waves.
1 h 57 min ago
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 Gunwalloe 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 Gunwalloe Surf forecast
The above surf forecast table for Gunwalloe provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Gunwalloe can be found by selecting the local surf guide option on the grey menu. Our Gunwalloe 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 (Gunwalloe) 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 Gunwalloe 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.
Gunwalloe is 14 km (9 miles) from The Lizard. If you plan a holiday in South Cornwall, look for hotels and other accommodation in The Lizard. The Lizard has rooms for a wide range of budgets as well as car hire and transport links.
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