Surf Forecasts:
Portreath Harbour Wall surf forecast from 15 Aug 2026:
- Most powerful swell: Thursday 20 Aug, 1AM (local time) - 6ft (1.9m), 7s period, WNW swell with 387 kJ wave energy.
Best Forecast Surf Conditions for Portreath Harbour Wall this week:
The most powerful waves expected at Portreath Harbour Wall in the next 16 days are 1.9m 7s 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 0.3m 14s period and expected on Thursday (Aug 20) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1AM (Thu 20th Aug) | 6ft (1.9m) 7s |
Table - best surf conditions forecast for Portreath Harbour Wall over the next 16 days.
The Lowdown
Alright, I’ve been over the numbers for the next 16 days, and I’m not gonna sugarcoat it. It’s a rough stretch for Portreath Harbour Wall. The first week is mostly a bust, with a lot of messy, cross-onshore wind and poor surf. You’re looking at a long wait for anything to get excited about.
The one day that stands out, and it’s a long way off, is the morning of Tuesday, 25 August. The swell is a solid 5ft from the west, with a period of 8 seconds, and the combined energy is moderate (301). The real story is the wind: a light breeze from the SSW, cross-off, which will leave the waves clean. This is a reef break, so a west swell of that size with clean conditions could give you some proper, lined-up waves. The water temp is about average for the time of year, nothing unusual.
The afternoon of the 25th still has clean conditions, but the swell drops to around 4ft and the wind picks up. There’s a faint hope on the afternoon of Friday, 28 August with a light breeze and cross-off wind, but the swell is only 3ft with a short 5-second period, so it’s barely surfable.
The rest of the period is grim. There’s a big pulse of energy on Monday, 24 August, with waves hitting 6ft to 6ft from the west and a very strong energy reading (564-565), but the wind is onshore or cross-onshore, turning it into a bumpy, lumpy mess. The swell on Sunday, 30 August is similar, 6ft but with a moderate cross-onshore breeze making it choppy.
The problem is, the wind and the swell are rarely on the same page. For a reef setup, you need clean wind, and it’s just not there except for that one morning. Crowds are often a factor at this spot, especially on any day that looks half-decent.
If you’re a surfer, you’re eyeing the 25th morning. The rest of the time, the combo of size and onshore wind might be better for the kite crowd.
Rusty.
Short Range ForecastMostly dry. Very mild (max 19°C on Fri night, min 16°C on Sat afternoon). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Tue night. Warm (max 21°C on Tue morning, min 16°C on Tue night). Winds increasing (light winds from the W on Tue night, fresh winds from the WNW by Thu morning). | ||||||||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 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 | W 8 | W 8 | WNW 7 | W 7 | W 7 | WNW 5 | WNW 8 | W 7 | W 6 | W 6 | WNW 6 | WNW 6 | WNW 6 | WNW 7 | WNW 7 | WNW 7 | WNW 7 | WNW 6 | WNW 6 | W 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 80 | 95 | 55 | 18 | 16 | 12 | 55 | 120 | 44 | 34 | 50 | 104 | 97 | 125 | 387 | 176 | 247 | 262 | 96 | 56 | 73 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | on | on | cross-on | cross-on | cross-on |
High Tide | 7:34AM6.51m | 7:53PM6.76m | 8:13AM6.37m | 8:31PM6.49m | 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 | |||||||
Low Tide | 1:54PM0.05m | 2:18AM0.07m | 2:31PM0.25m | 2:54AM0.38m | 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 | ||||||||
 | |  |  | | | | |  |  |  |  | | | | | | | | | | |
 | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | 6:18 | — | — |
 | — | 8:40 | — | — | 8:38 | — | — | 8:37 | — | — | 8:35 | — | — | 8:32 | — | — | 8:30 | — | — | 8:29 | — |
mm | — | — | — | — | — | — | — | — | — | — | 1 | 2 | — | — | 1 | — | — | 1 | — | — | — |
Temp °C | 18 | 17 | 16 | 19 | 19 | 19 | 19 | 19 | 18 | 21 | 20 | 18 | 18 | 18 | 17 | 18 | 18 | 17 | 18 | 17 | 16 |
Feels °C | 14 | 13 | 13 | 17 | 17 | 18 | 18 | 17 | 17 | 20 | 19 | 18 | 15 | 12 | 12 | 12 | 12 | 13 | 15 | 14 | 13 |
Swell 1 Height (m) Direction Period (s) | W 8 | W 8 | W 8 | WNW 7 | W 7 | W 7 | WNW 9 | SW 18 | W 8 | NW 6 | W 8 | SSW 17 | WNW 9 | W 9 | SW 15 | WNW 10 | SW 14 | WNW 9 | WNW 6 | WNW 6 | W 9 |
| kJ | 80 | 95 | 55 | 18 | 16 | 8 | 26 | 12 | 12 | 27 | 18 | 29 | 64 | 59 | 36 | 120 | 33 | 50 | 96 | 56 | 73 |
Swell 2 Height (m) Direction Period (s) | — | — | SW 12 | WSW 7 | WNW 5 | — | SW 18 | — | — | W 8 | SW 17 | — | SSW 16 | SSW 16 | — | SSW 14 | SSW 14 | SSW 14 | W 9 | W 9 | SW 16 |
| kJ | — | — | 6 | 11 | 4 | — | 12 | — | — | 12 | 11 | — | 24 | 24 | — | 21 | 20 | 19 | 54 | 24 | 39 |
Swell 3 Height (m) Direction Period (s) | — | — | S 20 | S 12 | N 4 | SW 18 | — | — | SW 16 | SSW 17 | — | — | — | WNW 11 | — | — | — | — | SW 13 | SSW 13 | WNW 8 |
| kJ | — | — | 7 | 3 | 3 | 12 | — | — | 10 | 28 | — | — | — | 12 | — | — | — | — | 7 | 17 | 6 |
Wind waves Height (m) Direction Period (s) | N 5 | N 5 | N 5 | N 4 | — | WNW 4 | WNW 5 | WNW 8 | W 7 | W 6 | W 6 | WNW 6 | WNW 6 | WNW 6 | WNW 7 | WNW 7 | WNW 7 | WNW 7 | — | NNW 4 | N 6 |
| kJ | 49 | 37 | 45 | 10 | — | 9 | 55 | 120 | 44 | 34 | 50 | 104 | 97 | 125 | 387 | 176 | 247 | 262 | — | 6 | 9 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 505 | 256 | 20 | 19 | 400 | 246 | 279 | 210 | 210 | 279 | 281 | 249 | 217 | 217 | 285 | 217 | 210 | 157 | 19 | 20 | 19 |
Best forecast wave conditions in North Cornwall | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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Information about the Portreath Harbour Wall Surf forecast
The above surf forecast table for Portreath Harbour Wall provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Portreath Harbour Wall can be found by selecting the local surf guide option on the grey menu. Our Portreath Harbour Wall 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 Harbour Wall) 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 Harbour Wall 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 Harbour Wall 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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