
Surf Forecasts:
Gwithian surf forecast from 16 Sep 2026:
- Best quality surf: Tuesday 22 Sep, 10PM (local time) - 5ft (1.6m), 16s period, WNW swell with offshore winds.
- Most powerful swell: Friday 18 Sep, 4AM (local time) - 7ft (2.2m), 13s period, WNW swell with 1,556 kJ wave energy.
- Next surfable swell (1★+): Sunday 20 Sep, 10AM (local time) - 5ft (1.5m), 11s 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 10AM. The primary swell is predicted to be 1.5m and 11s period with a secondary swell of 0.1m and 14s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Gwithian in the next 16 days are 2.2m 13s and forecast to arrive on Friday (Sep 18) at 4AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Wednesday (Sep 23) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Sun 20th Sep) | 5ft (1.5m) 11s |
| Best Surf | 10PM (Tue 22nd Sep) | 5ft (1.6m) 16s |
| Most Powerful | 4AM (Fri 18th Sep) | 7ft (2.2m) 13s |
Table - best surf conditions forecast for Gwithian over the next 16 days.
The Lowdown
Alright, surfers. Rusty here. Let’s talk about what we’ve got on the horizon for Gwithian over the next couple of weeks. It’s a bit of a mixed bag early on, but there’s some real magic brewing if you can wait for it.
To kick things off, the water temp is feeling pretty standard for this time of year, nothing out of the ordinary.
For the next few days, honestly, it’s a write-off. The wind is pumping onshore and cross-onshore, making a mess of things. We get a solid 7ft swell from the W on Wednesday the 18th, but with a cross-onshore wind and choppy conditions, it’s a fight out there. The wave energy is moderate (1285) but not worth it. This cross-shore, lumpy, and choppy vibes continue right through to Saturday the 21st. Not much to get excited about.
Then, Sunday the 22nd morning, things flip. We’ve got a glassy 5ft W swell (11 secs) coming in, and the energy is moderate (522). The wind is dead calm. That’s your first real window for a clean session. The afternoon gets onshore again, so hit it early.
Monday the 23rd is the one to circle. A clean 3ft swell from the W (12 secs) with glassy conditions in the morning. It’s small, but it will be perfect. The energy is light at mostly clean conditions. The morning could be a real treat. The afternoon stays clean with a tiny swell (3ft) and light winds.
Now, Tuesday the 24th is a standout. We get offshore winds from the ESE around 6 mph all day. Morning offers a clean 3ft WNW swell (12 secs), but the afternoon is where it shines. A 3ft WNW swell with a very long 17 second period hits, offering clean, lined-up waves with moderate energy (905). That’s your best bet for quality, long-period groundswell.
Looking further out into the first week of October, we see a pulse of new swell. By Wednesday the 2nd of October, we get a solid 7ft swell from the WSW with clean conditions and offshore winds. The wave energy is moderate (702). The afternoon on the 30th of September is even better with very good surf conditions and clean lines. On Thursday the 3rd of October, the swell drops a little to 6ft from the SW but remains clean with very light winds. That’s another good session on offer.
After a lull in the second half of September, the end of the month and into early October brings some cleaner, bigger swell. The standout is Tuesday the 24th for that long-period glass. The following weekend and into October also look promising, though the winds get a bit stronger. Keep an eye on that.
So, to sum it up: get through the wind this week, nail Sunday morning the 22nd, and do not miss Tuesday the 24th. That afternoon session is the best wave of the period. The first few days of October also look very promising for clean, head-high surf.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Wed night. Very mild (max 16°C on Tue 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 16°C on Fri night). Winds decreasing (fresh winds from the WSW on Fri night, calm by Sun morning). | ||||||||||||||||||||
Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | |||||||||||||||
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 11 | WNW 11 | W 10 | W 8 | WNW 9 | WNW 11 | WNW 13 | W 12 | W 8 | W 8 | W 11 | W 10 | W 11 | WNW 11 | W 11 | W 12 | WNW 12 | WNW 10 | WNW 12 | W 17 | WNW 15 |
Wave Graph | |||||||||||||||||||||
934 | 778 | 586 | 523 | 631 | 1189 | 1279 | 1074 | 541 | 503 | 1069 | 783 | 514 | 415 | 358 | 284 | 220 | 115 | 228 | 603 | 1049 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | glassy | on | cross-on | glassy | glassy | cross-off | off | off | off |
High Tide | 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 | 3:26PM4.56m | 3:53AM4.63m | |||||||
Low Tide | 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 | 9:17AM2.07m | 9:51PM1.77m | ||||||||
6:56 | — | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — | 7:03 | — | — | 7:05 | — | — | 7:05 | — | — | |
— | 7:34 | — | — | 7:31 | — | — | 7:29 | — | — | 7:27 | — | — | 7:24 | — | — | 7:22 | — | — | 7:21 | — | |
mm | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 18 | 17 | 18 | 17 | 18 | 19 | 17 | 18 | 18 | 18 | 20 | 21 | 19 |
Feels °C | 10 | 12 | 11 | 11 | 10 | 11 | 12 | 11 | 15 | 14 | 16 | 16 | 19 | 18 | 18 | 19 | 19 | 19 | 18 | 19 | 17 |
Swell 1 Height (m) Direction Period (s) | W 11 | WNW 11 | N 5 | — | S 13 | S 13 | WNW 13 | S 17 | WNW 12 | WNW 11 | SW 15 | W 10 | W 11 | WNW 11 | W 11 | W 12 | WNW 12 | WNW 10 | WNW 12 | W 11 | WNW 15 |
934 | 778 | 8 | — | 3 | 3 | 1279 | 6 | 115 | 138 | 9 | 783 | 514 | 415 | 358 | 284 | 220 | 115 | 228 | 302 | 1049 | |
Swell 2 Height (m) Direction Period (s) | S 11 | N 5 | S 13 | — | — | — | SW 12 | S 15 | SW 16 | SW 16 | S 11 | SW 14 | SW 14 | SW 14 | N 4 | SW 13 | SW 13 | SW 13 | WNW 19 | W 17 | W 10 |
2 | 19 | 4 | — | — | — | 6 | 4 | 10 | 10 | 2 | 8 | 8 | 8 | 1 | 7 | 7 | 7 | 125 | 603 | 264 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | S 18 | S 18 | S 12 | S 12 | — | — | — | — | SW 13 | — | — | — | SW 12 | S 12 | — |
— | — | — | — | — | — | 6 | 6 | 3 | 3 | — | — | — | — | 7 | — | — | — | 6 | 3 | — | |
Wind waves Height (m) Direction Period (s) | N 5 | — | W 10 | W 8 | WNW 9 | WNW 11 | — | W 12 | W 8 | W 8 | W 11 | — | — | — | — | — | — | — | ESE 3 | — | — |
33 | — | 586 | 523 | 631 | 1189 | — | 1074 | 541 | 503 | 1069 | — | — | — | — | — | — | — | 1 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 14 | 211 | 211 | 283 | 211 | 168 | 223 | 210 | 210 | 223 | 210 | 5 | 0 | 5 | 13 | 0 | 0 | 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.










