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Grunta Beach surfForecast / Devon (North) / UK
12 Day Weather and Surf, issued 12 pm Wednesday 17 Sep 2025 BST
Best Forecast Surf Conditions for Grunta Beach this week:
The surf forecast for Grunta Beach over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Sep 20) at 4AM. The primary swell is predicted to be 1.1m and 9s period with a secondary swell of 0.1m and 16s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Grunta Beach in the next 12 days are 4.0m 10s and forecast to arrive on Saturday (Sep 20) at 10PM. 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 6s period and expected on Monday (Sep 22) at 4AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sat 20th Sep) | 3.5ft (1.1m) 9s |
| Best Surf | 4AM (Sat 20th Sep) | 3.5ft (1.1m) 9s |
| Most Powerful | 10PM (Sat 20th Sep) | 13ft (4.0m) 10s |
Table - best surf conditions forecast for Grunta Beach over the next 12 days.
Short Range Forecast Light rain (total 5mm), mostly falling on Wed morning. Warm (max 20°C on Fri afternoon, min 15°C on Fri night). Winds decreasing (strong winds from the SW on Wed morning, light winds from the SW by Fri afternoon). | Days 3-6 Weather Summary Moderate rain (total 14mm), heaviest on Mon morning. Very mild (max 19°C on Sat morning, min 10°C on Mon night). Winds increasing (moderate winds from the SSE on Sat morning, near gales from the SW by Sat night). | ||||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 9 | 10 | 12 | 12 | 11 | 10 | 10 | 10 | 9 | 9 | 9 | 10 | 8 | 6 | 6 | 13 | 13 | 8 | 4 | 15 | 13 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 1274 | 1525 | 1794 | 1379 | 1046 | 651 | 567 | 445 | 271 | 181 | 143 | 2503 | 748 | 261 | 222 | 4 | 3 | 2 | 0 | 4 | 14 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross | cross- on | cross | cross- off | cross- on | cross- on | cross- on | on | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 3:38PM 7.18 | 4:21AM 7.38 | 4:47PM 7.90 | 5:18AM 8.07 | 5:37PM 8.55 | 6:03AM 8.61 | 6:19PM 8.98 | 6:41AM 8.93 | 6:55PM 9.19 | 7:14AM 9.06 | 7:27PM 9.22 | 7:45AM 9.07 | 7:57PM 9.14 | ||||||||
Low Tide / height (m) | 10:05PM 2.73 | 10:31AM 2.60 | 11:07PM 2.08 | 11:24AM 1.96 | 11:53PM 1.55 | 12:05PM 1.49 | 12:31AM 1.23 | 12:40PM 1.21 | 1:03AM 1.10 | 1:10PM 1.10 | 1:30AM 1.10 | 1:36PM 1.09 | 1:55AM 1.18 | ||||||||
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||||
| Sunrise | 6:54 | - | - | 6:54 | - | - | 6:56 | - | - | 6:58 | - | - | 7:00 | - | - | 7:01 | - | - | 7:03 | - | - |
| Sunset | - | 7:27 | - | - | 7:24 | - | - | 7:22 | - | - | 7:21 | - | - | 7:17 | - | - | 7:15 | - | - | 7:14 | - |
 | |  |  |  |  | | | |  | | | |  |  | | | | | | | |
Rain (mm) | 1 | 1 | 3 | - | - | - | - | - | - | - | 1 | - | - | 1 | 4 | 5 | 2 | 1 | - | - | - |
| Temp. °C | 17 | 17 | 17 | 19 | 19 | 17 | 19 | 20 | 16 | 19 | 17 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 14 | 13 |
| Feels °C (?) | 10 | 11 | 14 | 13 | 14 | 14 | 17 | 19 | 14 | 14 | 10 | 4 | 9 | 9 | 7 | 4 | 3 | 3 | 6 | 7 | 7 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Devon (North)
The wind is still cross-on at Grunta Beach (near gales from the SW at Woolacombe NDHPC 3 km from Grunta Beach). A 2.7m swell from the WSW
Actual: 41 min ago
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Grunta Beach 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 Grunta Beach Surf forecast
The above surf forecast table for Grunta Beach provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Grunta Beach can be found by selecting the local surf guide option on the grey menu. Our Grunta Beach 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 (Grunta Beach) 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 Grunta Beach 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.
Grunta Beach is 15 km (9 miles) from Appledore. If you plan a holiday in North Devon, look for hotels and other accommodation in Appledore. Appledore has rooms for a wide range of budgets as well as car hire and transport links.
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