Surf Forecasts:
Portreath Beach surf forecast from 17 Aug 2026:
- Most powerful swell: Thursday 20 Aug, 1AM (local time) - 8ft (2.4m), 8s period, WNW swell with 748 kJ wave energy.
Best Forecast Surf Conditions for Portreath Beach this week:
The most powerful waves expected at Portreath Beach in the next 16 days are 2.4m 8s and forecast to arrive on Thursday (Aug 20) at 1AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 17s period and expected on Tuesday (Aug 18) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1AM (Thu 20th Aug) | 8ft (2.4m) 8s |
Table - best surf conditions forecast for Portreath Beach over the next 16 days.
The Lowdown
Alright, Rusty here again, giving you the lowdown on Portreath Beach in the units you're after.
It's a tough outlook, mate. We're looking at a long stretch of ugly conditions starting Monday the 17th. The swell is tiny at 3ft from the WNW, and it's all onshore junk. This sets the tone for the next ten days or so. The wind is a problem, constantly onshore or cross-onshore, and the waves are blown out even when they get a bit of size. On Wednesday the 19th, the swell hits 5ft to 6ft, but with a 15-22 mph cross-onshore, it's just lumpy, choppy garbage. The wave energy is moderate (286-373), but it's all wasted.
There's a proper flat spell around the 23rd and 24th, with the swell dropping to just 1ft. Nothing doing. The only thing that catches your eye is right at the end of the period. On Monday the 1st of September, we get a solid 8ft groundswell from the WNW, with a period of 14 seconds. That's a powerful wave. The morning looks messy with a cross-shore wind, but the afternoon shows a cleaner cross-offshore breeze. That afternoon session is your one real chance. At 8ft, it's for experts only, and the energy is high (2506). It's a long shot this far out, but it's the only window with any promise.
Bottom line: you're waiting almost two weeks for one afternoon that might be good. The first week and a half is a total loss. That Monday the 1st of September afternoon is the one to watch, but don't bet the farm on it.
Short Range ForecastSome drizzle, heaviest during Tue night. Very mild (max 19°C on Sun night, min 16°C on Mon night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Wed night. Very mild (max 18°C on Thu morning, min 14°C on Thu night). Winds decreasing (fresh winds from the W on Wed night, light winds from the NNW by Thu night). | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
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) | WNW 6 | W 8 | W 5 | WNW 6 | WNW 6 | WNW 7 | WNW 7 | WNW 7 | WNW 8 | WNW 9 | WNW 9 | W 9 | W 8 | WNW 8 | SW 16 | N 6 | N 6 | SW 15 | SW 14 | SW 14 | SW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 64 | 115 | 62 | 134 | 139 | 212 | 261 | 373 | 748 | 675 | 495 | 235 | 130 | 85 | 39 | 102 | 105 | 33 | 31 | 32 | 32 |
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 | cross-on | cross-on | cross-on | on | on | on | cross | cross-on | cross-on | cross | cross | cross | cross-on | cross-on | cross |
High Tide | 8:51AM6.09m | 9:09PM6.08m | 9:28AM5.72m | 9:48PM5.59m | 10:08AM5.28m | 10:29PM5.07m | 10:52AM4.83m | 11:20PM4.59m | 11:51AM4.44m | 00:32AM4.24m | 1:16PM4.23m | 2:06AM4.17m | 2:47PM4.35m | 3:25AM4.40m | |||||||
Low Tide | 3:07PM0.57m | 3:29AM0.78m | 3:44PM0.99m | 4:05AM1.23m | 4:23PM1.44m | 4:45AM1.69m | 5:10PM1.88m | 5:37AM2.10m | 6:16PM2.23m | 6:55AM2.37m | 7:50PM2.36m | 8:32AM2.35m | 9:20PM2.18m | ||||||||
 | |  |  | |  | | | |  | |  | | | |  | | | | | | |
 | 6:11 | — | — | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:20 | — | — |
 | — | 8:37 | — | — | 8:35 | — | — | 8:32 | — | — | 8:30 | — | — | 8:29 | — | — | 8:27 | — | — | 8:24 | — |
mm | — | — | — | — | — | 1 | — | — | 3 | 1 | — | — | 1 | — | — | — | — | — | — | — | — |
Temp °C | 19 | 19 | 19 | 19 | 19 | 18 | 18 | 18 | 17 | 18 | 17 | 15 | 17 | 17 | 15 | 18 | 18 | 17 | 17 | 17 | 16 |
Feels °C | 17 | 17 | 17 | 17 | 16 | 16 | 13 | 12 | 12 | 14 | 12 | 13 | 15 | 13 | 12 | 15 | 14 | 15 | 13 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | WNW 9 | SW 18 | — | SSW 17 | SW 17 | SSW 17 | WNW 11 | SSW 16 | SW 15 | SSW 14 | WNW 9 | W 9 | W 8 | WNW 8 | W 8 | W 10 | W 10 | W 9 | W 9 | W 9 | W 9 |
| kJ | 43 | 12 | — | 28 | 11 | 29 | 25 | 24 | 36 | 21 | 495 | 235 | 130 | 85 | 35 | 52 | 47 | 27 | 25 | 15 | 14 |
Swell 2 Height (m) Direction Period (s) | SW 18 | — | SW 16 | W 8 | — | — | SSW 16 | — | — | — | SW 14 | N 5 | SSW 13 | SSW 13 | SW 16 | SSW 15 | SSW 15 | SW 15 | SW 14 | SW 14 | SW 14 |
| kJ | 12 | — | 10 | 4 | — | — | 24 | — | — | — | 33 | 12 | 17 | 17 | 39 | 21 | 21 | 33 | 31 | 32 | 32 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | SSW 14 | SSW 16 | SSW 16 | W 11 | NW 8 | SW 12 | W 6 | E 5 | WNW 6 | WNW 5 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 19 | 25 | 25 | 10 | 2 | 6 | 1 | 2 | 3 | 2 |
Wind waves Height (m) Direction Period (s) | WNW 6 | W 8 | W 5 | WNW 6 | WNW 6 | WNW 7 | WNW 7 | WNW 7 | WNW 8 | WNW 9 | N 5 | — | N 5 | N 5 | NNW 5 | N 6 | N 6 | N 5 | N 4 | N 4 | N 3 |
| kJ | 64 | 115 | 62 | 134 | 139 | 212 | 261 | 373 | 748 | 675 | 12 | — | 31 | 25 | 23 | 102 | 105 | 33 | 15 | 9 | 2 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 278 | 257 | 281 | 290 | 211 | 226 | 557 | 211 | 426 | 152 | 108 | 19 | 8 | 25 | 217 | 14 | 19 | 8 | 19 | 19 | 155 |
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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