Surf Forecasts:
Port Rhu surf forecast from 3 Aug 2026:
- Most powerful swell: Wednesday 5 Aug, 2PM (local time) - 5ft (1.5m), 8s period, W swell with 291 kJ wave energy.
Best Forecast Surf Conditions for Port Rhu this week:
The most powerful waves expected at Port Rhu in the next 16 days are 1.5m 8s and forecast to arrive on Wednesday (Aug 05) at 2PM. 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 3s period and expected on Monday (Aug 10) at 2AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Wed 5th Aug) | 5ft (1.5m) 8s |
Table - best surf conditions forecast for Port Rhu over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a look at what’s on offer at Port Rhu over the next couple of weeks.
Straight up, I’ll be honest with you: this is a tough one for the paddlers. The whole 16-day window is a flat or near-flat affair with hardly any energy to speak of. The wave energy is weak throughout, with values sitting in the two-digit range for most of the period. The best you’ll see is a brief spike of moderate energy hitting 271 on the Wednesday morning of the 5th, but even then, the swell is small, short period, and the wind is onshore, so it’s not going to be any good for surfing. In fact, most of the period is classed as poor surf conditions. There’s a long stretch of nothing from the start all the way through, with only a couple of days that even get a “surfable but very ordinary” tag.
The first real chance to get wet comes on Thursday, August 13th, in the morning. The swell is tiny at 2ft from the west, with a short period of 8 seconds. The energy is still weak (53). The wind is light from the east at 6 mph, which is offshore. That’ll keep the surface clean. It’s not a standout, but it’s the best you’re going to get. The water temperature is about average for this time of year.
After that, things get another go on Sunday, August 16th, in the morning. Same story: 3ft from the west, 8-second period, weak energy (92). The wind is offshore from the east at 12 mph, keeping it moderately offshore and clean. This is surfable, but nothing to write home about.
Then the final chance shows up on Monday, August 17th, in the morning. Again, 3ft from the west, 8-second period, weak energy (96). The wind is gentle offshore from the east at 9 mph, so it’s clean. Still very ordinary.
There are no standouts here, no big swell, no long period pumping groundswell. The best on offer is those few mornings with a little clean, waist-high dribble. If you are desperate for a paddle, the 13th, 16th, and 17th mornings are your only real options. The rest of the time, it’s a flat, choppy, or blown-out mess. For a spot like this, a blank run this long is a bit unusual, but it happens. The setup is not interesting for kiting either, given the weak energy.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Sun night, min 18°C on Tue night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 21°C on Fri night, min 14°C on Fri morning). Winds decreasing (fresh winds from the W on Wed night, light winds from the N by Fri morning). | ||||||||||||||||||
Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | ||||||||||||||
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 10 | W 8 | W 8 | W 8 | WSW 8 | WSW 7 | WSW 7 | WSW 7 | W 8 | W 8 | W 7 | W 7 | W 10 | W 10 | W 9 | WNW 5 | W 9 | W 4 | WNW 5 |
Wave Graph  | |||||||||||||||||||
 kJ | 47 | 50 | 51 | 49 | 130 | 147 | 153 | 186 | 219 | 153 | 48 | 58 | 17 | 16 | 16 | 13 | 6 | 23 | 18 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | on | on | cross-on | cross-on | cross-on | on | on | on | cross-on | cross-on | on | cross-off | cross | on | cross | cross | on | cross-on |
High Tide | 8:01PM4.29m | 8:20AM4.02m | 8:36PM4.18m | 8:57AM3.92m | 9:15PM4.01m | 9:40AM3.77m | 10:03PM3.79m | 10:33AM3.59m | 11:04PM3.55m | 11:44AM3.44m | 00:30AM3.39m | 1:19PM3.44m | 2:11AM3.44m | ||||||
Low Tide | 2:25AM0.41m | 2:37PM0.54m | 3:03AM0.54m | 3:18PM0.69m | 3:46AM0.72m | 4:06PM0.87m | 4:37AM0.93m | 5:06PM1.06m | 5:42AM1.12m | 6:20PM1.17m | 6:59AM1.20m | 7:42PM1.11m | |||||||
 |  | |  | | | | | | | | |  | | | |  | | | |
 | — | 6:52 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — |
 | 9:45 | — | — | 9:44 | — | — | 9:43 | — | — | 9:40 | — | — | 9:39 | — | — | 9:37 | — | — | 9:37 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 19 | 20 | 20 | 20 | 20 | 20 | 18 | 18 | 18 | 16 | 17 | 20 | 16 | 18 | 21 | 16 | 19 | 19 |
Feels °C | 20 | 17 | 17 | 18 | 19 | 19 | 18 | 15 | 15 | 12 | 15 | 13 | 14 | 15 | 14 | 15 | 13 | 13 | 12 |
Swell 1 Height (m) Direction Period (s) | W 10 | W 8 | W 8 | W 8 | WSW 8 | W 9 | — | WSW 7 | — | W 8 | W 7 | W 10 | W 5 | W 6 | W 9 | WNW 5 | W 9 | — | WNW 5 |
| kJ | 47 | 50 | 51 | 49 | 130 | 6 | — | 186 | — | 32 | 48 | 18 | 12 | 7 | 16 | 13 | 6 | — | 18 |
Swell 2 Height (m) Direction Period (s) | WNW 3 | NW 6 | NW 6 | — | — | W 9 | — | — | — | — | W 10 | — | W 10 | W 10 | — | W 9 | WNW 6 | — | WNW 9 |
| kJ | 1 | 2 | 2 | — | — | 15 | — | — | — | — | 18 | — | 17 | 16 | — | 7 | 3 | — | 16 |
Swell 3 Height (m) Direction Period (s) | W 6 | — | — | — | — | — | — | — | — | — | — | — | W 7 | — | — | — | — | — | W 6 |
| kJ | 1 | — | — | — | — | — | — | — | — | — | — | — | 4 | — | — | — | — | — | 1 |
Wind waves Height (m) Direction Period (s) | — | — | WSW 3 | WSW 3 | WSW 4 | WSW 7 | WSW 7 | WSW 7 | W 8 | W 8 | — | W 7 | NNE 3 | — | W 3 | NNE 3 | — | W 4 | N 3 |
| kJ | — | — | 3 | 3 | 6 | 147 | 153 | 85 | 219 | 153 | — | 58 | 3 | — | 10 | 6 | — | 23 | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 10 | 84 | 258 | 109 | 97 | 679 | 138 | 139 | 149 | 28 | 7 | 149 | 81 | 131 | 455 | 453 | 112 | 354 | 81 |
Best forecast wave conditions in Morbihan - Brittany | |||||||||||||||||||
Best forecast wave conditions in France | |||||||||||||||||||
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Information about the Port Rhu Surf forecast
The above surf forecast table for Port Rhu provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Port Rhu can be found by selecting the local surf guide option on the grey menu. Our Port Rhu 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 (Port Rhu) 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 Port Rhu 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.
Port Rhu is 31 km (19 miles) from the city of Lanester. If you plan a holiday in Morbihan - Brittany, look for hotels and other accommodation in Lanester. Lanester has rooms for a wide range of budgets as well as car hire and transport links.
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