Surf Forecasts:
Port Blanc surf forecast from 21 Jul 2026:
- Best quality surf: Tuesday 28 Jul, 8AM (local time) - 2.5ft (0.7m), 10s period, WNW swell with cross-offshore winds.
- Most powerful swell: Monday 27 Jul, 5AM (local time) - 4.5ft (1.4m), 9s period, WNW swell with 326 kJ wave energy.
- Next surfable swell (1★+): Tuesday 28 Jul, 8AM (local time) - 2.5ft (0.7m), 10s period with WNW swell.
Best Forecast Surf Conditions for Port Blanc this week:
The surf forecast for Port Blanc over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Jul 28) at 8AM. The primary swell is predicted to be 0.7m and 10s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Port Blanc in the next 16 days are 1.4m 9s and forecast to arrive on Monday (Jul 27) at 5AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Wednesday (Jul 22) at 2AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Tue 28th Jul) | 2.5ft (0.7m) 10s |
| Best Surf | 8AM (Tue 28th Jul) | 2.5ft (0.7m) 10s |
| Most Powerful | 5AM (Mon 27th Jul) | 4.5ft (1.4m) 9s |
Table - best surf conditions forecast for Port Blanc over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s talk about the stretch at Port Blanc.
Honestly, I’m looking at this 16-day run and it’s a tough one. The first week is a write-off. We’ve got days of tiny, weak swell and either howling onshore winds or cross-off breezes that just can’t dress up what’s on offer. The water is running at 72°F and that’s a solid 7°F warmer than usual for this time of year, which is wild – you’ll be in a spring suit, maybe even boardshorts, but the ocean is flat as a pancake.
The first real glimmer comes on Tuesday, July 28th. The morning session is the only thing worth paddling out for in the whole forecast. It’s glassy, dead calm, and clean. The swell is still tiny at 2ft from the west, with a period of 10 seconds. The combined energy is weak (67), so you’re not getting any power, but it’s rideable. The wind is 3 mph, glassy, and you’ll have the place to yourself. It’s a micro-session, but it’s clean.
After that, it’s back to the doldrums. Wednesday the 29th has a brief offshore window in the morning but the swell drops to 1ft – not enough to hold your interest. The rest of the week into early August is a parade of onshore winds, tiny swell, and poor surf conditions. There’s a moment on Sunday, August 2nd, with a glassy morning (1ft, 9 seconds, 25 energy), but it’s still just barely surfable.
The only standout – and I mean the *only* one – is that Tuesday July 28th morning. It’s not a barrel, it’s not a bomb, but it’s clean, glassy, and you’ll have the peak to yourself. If you’re desperate for a paddle, that’s your window. Otherwise, leave the board in the car.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Thu afternoon, min 16°C on Tue morning). Winds decreasing (fresh winds from the NE on Tue morning, light winds from the SSE by Thu afternoon). | Days 4-6 Weather SummarySome drizzle, heaviest during Sun morning. Warm (max 26°C on Fri afternoon, min 17°C on Sun night). Winds increasing (light winds from the S on Fri afternoon, strong winds from the W by Sat afternoon). | ||||||||||||||||||||
Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | |||||||||||||||
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 | W 10 | W 10 | W 10 | W 10 | W 9 | W 9 | W 9 | W 9 | W 9 | W 8 | W 8 | W 8 | W 4 | WNW 5 | W 6 | W 7 | WNW 9 | W 9 | W 9 | WNW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 9 | 8 | 17 | 8 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 47 | 64 | 178 | 222 | 311 | 207 | 169 | 113 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | off | on | cross-off | off | cross-on | cross-off | off | on | cross-off | cross-on | on | on | cross-on | on | cross-on | on | on | cross |
High Tide | 10:41AM3.47m | 11:05PM3.44m | 11:38AM3.27m | 00:10AM3.19m | 12:52PM3.16m | 1:34AM3.08m | 2:13PM3.17m | 2:52AM3.13m | 3:19PM3.31m | 3:49AM3.27m | 4:08PM3.50m | 4:32AM3.46m | 4:48PM3.72m | ||||||||
Low Tide | 4:57PM1.06m | 5:27AM1.16m | 5:55PM1.30m | 6:26AM1.37m | 7:01PM1.44m | 7:32AM1.46m | 8:11PM1.43m | 8:37AM1.42m | 9:13PM1.31m | 9:34AM1.27m | 10:06PM1.12m | 10:23AM1.07m | 10:51PM0.90m | ||||||||
 | |  | | | | | | | | | | |  |  |  | | | | | | |
 | 6:35 | — | — | 6:37 | — | — | 6:37 | — | — | 6:39 | — | — | 6:41 | — | — | 6:41 | — | — | 6:43 | — | — |
 | — | — | 10:00 | — | — | 9:59 | — | — | 9:58 | — | — | 9:57 | — | — | 9:55 | — | — | 9:54 | — | — | 9:53 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — |
Temp °C | 20 | 27 | 25 | 21 | 26 | 26 | 21 | 28 | 28 | 21 | 26 | 26 | 23 | 23 | 20 | 19 | 20 | 24 | 20 | 20 | 26 |
Feels °C | 14 | 22 | 19 | 18 | 20 | 21 | 17 | 24 | 23 | 17 | 21 | 20 | 20 | 16 | 13 | 15 | 15 | 19 | 18 | 15 | 21 |
Swell 1 Height (m) Direction Period (s) | W 11 | W 10 | W 10 | W 10 | W 10 | WNW 4 | W 9 | W 9 | W 9 | W 9 | SE 4 | WNW 3 | — | SW 5 | — | — | — | — | W 9 | — | WNW 9 |
| kJ | 9 | 8 | 17 | 8 | 7 | 3 | 6 | 6 | 6 | 6 | 5 | 1 | — | 1 | — | — | — | — | 207 | — | 113 |
Swell 2 Height (m) Direction Period (s) | W 8 | W 8 | NW 6 | — | SE 4 | W 9 | — | ESE 3 | — | — | W 8 | W 8 | W 8 | — | — | — | — | — | — | — | — |
| kJ | 1 | 1 | 1 | — | 1 | 7 | — | 1 | — | — | 6 | 5 | 5 | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | W 8 | — | — | — | — | — | — | W 6 | NW 5 | — | ENE 3 | — | — | — | — | — | — | — | — | — | — |
| kJ | 1 | — | — | — | — | — | — | 1 | 1 | — | 1 | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NE 4 | NE 3 | NE 4 | ENE 3 | — | NE 3 | E 3 | — | ENE 3 | ESE 4 | — | NE 3 | N 3 | W 4 | WNW 5 | W 6 | W 7 | WNW 9 | N 4 | W 9 | N 3 |
| kJ | 11 | 2 | 17 | 3 | — | 3 | 3 | — | 5 | 12 | — | 2 | 1 | 47 | 64 | 178 | 222 | 311 | 2 | 169 | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 365 | 364 | 394 | 394 | 458 | 363 | 130 | 341 | 341 | 532 | 732 | 475 | 662 | 775 | 477 | 475 | 28 | 28 | 16 | 28 | 16 |
Best forecast wave conditions in Morbihan - Brittany | |||||||||||||||||||||
Best forecast wave conditions in France | |||||||||||||||||||||
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Information about the Port Blanc Surf forecast
The above surf forecast table for Port Blanc provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Port Blanc can be found by selecting the local surf guide option on the grey menu. Our Port Blanc 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 Blanc) 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 Blanc 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 Blanc is 31 km (19 miles) from Lorient. If you plan a holiday in Morbihan - Brittany, look for hotels and other accommodation in Lorient. Lorient has rooms for a wide range of budgets as well as car hire and transport links.
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