Surf Forecasts:
Gwithian surf forecast from 15 Sep 2026:
- Best quality surf: Sunday 20 Sep, 10PM (local time) - 4.5ft (1.3m), 10s period, W swell with glassy winds.
- Most powerful swell: Friday 18 Sep, 7AM (local time) - 7ft (2.1m), 13s period, WNW swell with 1,467 kJ wave energy.
- Next surfable swell (1★+): Sunday 20 Sep, 10PM (local time) - 4.5ft (1.3m), 10s period with W swell.
Best Forecast Surf Conditions for Gwithian this week:
The surf forecast for Gwithian over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Sep 20) at 10PM. The primary swell is predicted to be 1.3m and 10s period with a secondary swell of 0.1m and 13s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Gwithian in the next 16 days are 2.1m 13s and forecast to arrive on Friday (Sep 18) at 7AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 3s period and expected on Monday (Sep 21) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Sun 20th Sep) | 4.5ft (1.3m) 10s |
| Best Surf | 10PM (Sun 20th Sep) | 4.5ft (1.3m) 10s |
| Most Powerful | 7AM (Fri 18th Sep) | 7ft (2.1m) 13s |
Table - best surf conditions forecast for Gwithian over the next 16 days.
The Lowdown
Alright, let's talk waves.
The next few days are a write-off, to be honest. We got a proper westerly blow and the surf is just a mess. Waves are in the 6ft range but it's lumpy and onshore, with the swell energy in that moderate 400-600 range. Not worth the hassle.
There's a small window of clean but small surf around the 21st and 22nd if you're desperate. Waves drop to 3ft, but the wind goes offshore and it cleans up, though the energy is weak, around 235-306.
But check this out – the 23rd of September is the day. Wednesday morning is looking fun with a cross-offshore breeze and clean 5ft waves from the WNW. The energy jumps to 1191. Then the afternoon is the real deal: glassy conditions, solid 6-7ft groundswell with a long 13-second period, and the energy reading hits 1359. That is a serious session for the experienced surfers. This is the one you've been waiting for.
After that, the 24th and 25th have some clean, smaller waves in the 3-4ft range with offshore winds, decent energy in the 244-700 range. Good for a paddle.
Then the wind goes super strong offshore and the swell completely dies. From the 27th, we're looking at 1-2ft dribble with energy under 100. Proper flat spell. The end of the month sees the swell start to poke its head up again but it's slow and a bit groggy.
So, big picture: a rough start, a few clean but small days, and then one absolute gem on Wednesday the 23rd afternoon. Gwithian is the spot for that one. Everything else is just marking time. It's all about that one session.
Rusty out.
Short Range ForecastLight rain (total 2mm), mostly falling on Wed night. Very mild (max 18°C on Mon night, min 14°C on Wed morning). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Sun afternoon, min 14°C on Thu night). Winds decreasing (fresh winds from the WSW on Fri afternoon, light winds from the W by Sun afternoon). | ||||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | W 8 | WNW 8 | WNW 9 | WNW 11 | WNW 11 | W 10 | W 8 | W 8 | WNW 10 | WNW 13 | W 12 | W 7 | W 7 | W 7 | W 10 | W 10 | W 10 | W 10 | W 12 | WNW 12 | W 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 418 | 437 | 676 | 1027 | 763 | 596 | 553 | 632 | 979 | 1144 | 913 | 315 | 269 | 245 | 635 | 555 | 369 | 346 | 299 | 228 | 221 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross-on | on | cross-on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | glassy | off | glassy | cross-off |
High Tide | 8:18AM6.02m | 8:36PM5.87m | 8:52AM5.66m | 9:11PM5.40m | 9:28AM5.22m | 9:49PM4.90m | 10:08AM4.76m | 10:34PM4.42m | 11:03AM4.32m | 11:44PM4.03m | 12:31PM4.06m | 1:32AM3.93m | 2:18PM4.17m | 3:00AM4.20m | |||||||
Low Tide | 2:33PM0.56m | 2:49AM0.80m | 3:06PM0.95m | 3:22AM1.23m | 3:42PM1.40m | 3:59AM1.68m | 4:26PM1.85m | 4:48AM2.11m | 5:31PM2.25m | 6:09AM2.41m | 7:15PM2.41m | 7:59AM2.40m | 8:52PM2.19m | ||||||||
 | |  |  |  |  |  | |  | | | | | | | | | | | | | |
 | 6:56 | — | — | 6:56 | — | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — | 7:03 | — | — | 7:05 | — | — |
 | — | 7:36 | — | — | 7:34 | — | — | 7:31 | — | — | 7:29 | — | — | 7:27 | — | — | 7:24 | — | — | 7:22 | — |
mm | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 16 | 14 | 15 | 16 | 16 | 15 | 15 | 16 | 16 | 18 | 17 | 17 | 17 | 18 | 19 | 20 | 20 | 19 | 18 |
Feels °C | 11 | 10 | 12 | 10 | 11 | 11 | 11 | 9 | 9 | 13 | 11 | 15 | 14 | 14 | 16 | 18 | 19 | 21 | 21 | 20 | 18 |
Swell 1 Height (m) Direction Period (s) | S 11 | S 11 | S 11 | WNW 11 | WNW 11 | N 5 | — | S 13 | S 13 | WNW 13 | S 17 | WNW 12 | WNW 11 | WNW 10 | SW 14 | W 10 | W 10 | W 10 | W 12 | WNW 12 | W 10 |
| kJ | 2 | 2 | 2 | 1027 | 763 | 9 | — | 3 | 3 | 1144 | 6 | 127 | 95 | 149 | 8 | 555 | 369 | 346 | 299 | 228 | 221 |
Swell 2 Height (m) Direction Period (s) | — | — | S 11 | S 11 | N 6 | S 13 | — | — | — | N 5 | S 12 | SW 16 | SW 16 | SW 15 | — | SW 14 | WNW 12 | SW 13 | SW 13 | SW 13 | SW 13 |
| kJ | — | — | 2 | 2 | 30 | 4 | — | — | — | 4 | 3 | 10 | 10 | 9 | — | 8 | 78 | 7 | 7 | 7 | 7 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | SW 12 | S 15 | S 12 | SW 12 | — | — | — | SW 14 | — | — | — | S 6 |
| kJ | — | — | — | — | — | — | — | — | — | 6 | 4 | 3 | 5 | — | — | — | 8 | — | — | — | 1 |
Wind waves Height (m) Direction Period (s) | W 8 | WNW 8 | WNW 9 | N 6 | — | W 10 | W 8 | W 8 | WNW 10 | — | W 12 | W 7 | W 7 | W 7 | W 10 | — | — | — | — | SSE 2 | SSE 2 |
| kJ | 418 | 437 | 676 | 38 | — | 596 | 553 | 632 | 979 | — | 913 | 315 | 269 | 245 | 635 | — | — | — | — | 1 | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 214 | 214 | 115 | 115 | 211 | 506 | 553 | 214 | 115 | 69 | 211 | 211 | 214 | 6 | 6 | 4 | 5 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in North Cornwall | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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Information about the Gwithian Surf forecast
The above surf forecast table for Gwithian provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Gwithian can be found by selecting the local surf guide option on the grey menu. Our Gwithian 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 (Gwithian) 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 Gwithian 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.
Gwithian is 6 km (4 miles) from Camborne. If you plan a holiday in North Cornwall, look for hotels and other accommodation in Camborne. Camborne has rooms for a wide range of budgets as well as car hire and transport links.
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