Surf Forecasts:
Portreath Beach surf forecast from 9 Sep 2026:
- Best quality surf: Wednesday 9 Sep, 10PM (local time) - 2.5ft (0.8m), 9s period, WNW swell with cross-offshore winds.
- Most powerful swell: Thursday 10 Sep, 7PM (local time) - 8ft (2.5m), 9s period, W swell with 996 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 10PM (local time) - 2.5ft (0.8m), 9s period with WNW swell.
Best Forecast Surf Conditions for Portreath Beach this week:
The surf forecast for Portreath Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 09) at 10PM. The primary swell is predicted to be 0.8m and 9s period with a secondary swell of 0.7m and 8s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Portreath Beach in the next 16 days are 2.5m 9s and forecast to arrive on Thursday (Sep 10) at 7PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.1m 16s period and expected on Friday (Sep 11) at 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Wed 9th Sep) | 2.5ft (0.8m) 9s |
| Best Surf | 10PM (Wed 9th Sep) | 2.5ft (0.8m) 9s |
| Most Powerful | 7PM (Thu 10th Sep) | 8ft (2.5m) 9s |
Table - best surf conditions forecast for Portreath Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a look at what’s shaping up.
It’s a slow start, no two ways about it. The first decent surf doesn’t roll in until the 20th of September, so we’re looking at an 11-day stretch of poor conditions. Onshore winds and messy surf are the story for most of it. There’s a bit of swell, like a 5ft west swell on the morning of the 9th, but that NNW wind at 12 mph just wrecks it. The water's a touch warmer than normal at 64°.
The only real highlight is Portreath Beach itself, and it takes its time. On Sunday the 20th of September, the morning is still a bit meh with a light offshore SE breeze at 6 mph and a tiny 2ft west swell, but the afternoon is where it’s at. The wind goes light offshore from the SSE at 6 mph, the swell jumps to 3ft from the WNW, and the period goes to 12 seconds. That’s a true groundswell, and combined wave energy is 302 (moderate). It’ll be clean and glassy, the best window by far.
Then on Monday the 21st of September, the morning is glassy with a 3 mph SSW wind and a 3ft west swell at 11 seconds. Combined energy is 245 (moderate). It’s surfable, but ordinary. The afternoon gets choppy again with a cross-onshore breeze.
For the first week and a half, it’s a total bust unless you’re into kite surfing, because the cross-shore winds and lumpy stuff are more their game. For the paddle surfer, hold out for that Sunday the 20th. It’s a late call, but it’s the only clean window we’ve got.
Rusty.
Short Range ForecastMostly dry. Very mild (max 18°C on Thu morning, min 14°C on Wed night). Winds increasing (light winds from the SSW on Wed night, fresh winds from the SSW by Thu morning). | Days 4-6 Weather SummaryLight rain (total 7mm), mostly falling on Sat night. Warm (max 22°C on Mon morning, min 17°C on Sun afternoon). Wind will be generally light. | ||||||||||||||||||||
Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | |||||||||||||||
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 9 | WNW 9 | WNW 8 | SW 5 | WSW 7 | W 10 | W 9 | W 9 | W 8 | W 8 | W 7 | W 10 | W 10 | W 10 | W 9 | W 9 | W 9 | WSW 8 | W 8 | W 10 | W 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 386 | 169 | 73 | 35 | 456 | 752 | 380 | 263 | 157 | 234 | 338 | 849 | 494 | 362 | 198 | 130 | 125 | 92 | 182 | 426 | 339 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-off | cross-off | cross | cross-on | on | on | cross | cross | cross | cross | cross-on | cross-on | cross | cross-on | cross | cross-off | cross | on | on |
High Tide | 4:47PM6.06m | 5:12AM6.03m | 5:31PM6.48m | 5:53AM6.36m | 6:11PM6.74m | 6:31AM6.55m | 6:48PM6.80m | 7:07AM6.57m | 7:24PM6.68m | 7:41AM6.44m | 7:59PM6.41m | 8:15AM6.17m | 8:33PM6.00m | ||||||||
Low Tide | 10:49AM0.82m | 11:18PM0.45m | 11:34AM0.41m | 11:59PM0.11m | 12:14PM0.13m | 00:37AM-0.05m | 12:50PM0.01m | 1:11AM-0.04m | 1:25PM0.06m | 1:44AM0.13m | 1:58PM0.25m | 2:16AM0.43m | 2:30PM0.57m | 2:47AM0.82m | |||||||
 | |  |  |  | | | | | | |  | | | | | | |  | |  | |
 | 6:46 | — | — | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — |
 | — | 7:49 | — | — | 7:46 | — | — | 7:45 | — | — | 7:42 | — | — | 7:39 | — | — | 7:37 | — | — | 7:36 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 7 | — | — | — | — | — | — | 2 | — | — |
Temp °C | 15 | 15 | 16 | 18 | 17 | 18 | 18 | 18 | 16 | 19 | 19 | 18 | 19 | 19 | 21 | 22 | 21 | 19 | 19 | 17 | 17 |
Feels °C | 11 | 12 | 14 | 12 | 14 | 16 | 16 | 17 | 15 | 15 | 15 | 16 | 17 | 17 | 21 | 22 | 20 | 20 | 19 | 13 | 14 |
Swell 1 Height (m) Direction Period (s) | W 9 | WNW 9 | WNW 8 | WSW 7 | — | W 10 | W 9 | W 9 | W 8 | WNW 14 | NW 13 | S 14 | W 10 | W 10 | W 9 | W 9 | W 9 | WSW 8 | W 8 | W 10 | W 9 |
| kJ | 386 | 169 | 73 | 18 | — | 752 | 380 | 263 | 157 | 20 | 41 | 4 | 494 | 362 | 198 | 130 | 125 | 92 | 182 | 426 | 339 |
Swell 2 Height (m) Direction Period (s) | WSW 9 | WSW 8 | WSW 8 | WNW 8 | N 5 | — | — | S 16 | N 4 | — | SW 15 | — | SW 13 | SW 13 | N 4 | N 4 | SW 12 | WNW 13 | W 11 | S 11 | S 11 |
| kJ | 119 | 71 | 39 | 21 | 1 | — | — | 5 | 1 | — | 8 | — | 7 | 7 | 3 | 1 | 6 | 17 | 62 | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | — | N 6 | N 6 | N 5 | — | — | — | — | — | SW 15 | S 15 | — | — | — | S 13 | SW 12 | — | S 12 | S 11 | — | — |
| kJ | — | 29 | 11 | 2 | — | — | — | — | — | 8 | 4 | — | — | — | 3 | 6 | — | 3 | 2 | — | — |
Wind waves Height (m) Direction Period (s) | N 6 | — | — | SW 5 | WSW 7 | — | — | — | — | W 8 | W 7 | W 10 | — | — | — | — | — | — | — | — | N 3 |
| kJ | 39 | — | — | 35 | 456 | — | — | — | — | 234 | 338 | 849 | — | — | — | — | — | — | — | — | 5 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 19 | 19 | 0 | 210 | 248 | 21 | 19 | 19 | 8 | 23 | 226 | 211 | 61 | 226 | 12 | 12 | 13 | 0 | 12 | 152 | 19 |
Best forecast wave conditions in North Cornwall | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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Information about the Portreath Beach Surf forecast
The above surf forecast table for Portreath Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Portreath Beach can be found by selecting the local surf guide option on the grey menu. Our Portreath 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 (Portreath 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 Portreath 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.
Portreath Beach is 5 km (3 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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