
Surf Forecasts:
Cogumelo surf forecast from 8 Aug 2026:
- Best quality surf: Friday 14 Aug, 4AM (local time) - 3.5ft (1.0m), 10s period, WNW swell with cross-offshore winds.
- Most powerful swell: Saturday 15 Aug, 7PM (local time) - 5.5ft (1.7m), 8s period, NW swell with 355 kJ wave energy.
- Next surfable swell (1★+): Tuesday 11 Aug, 4AM (local time) - 2ft (0.6m), 7s period with NW swell.
Best Forecast Surf Conditions for Cogumelo this week:
The surf forecast for Cogumelo over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 11) at 4AM. The primary swell is predicted to be 0.6m and 7s period with a secondary swell of 0.2m and 10s. Another secondary swell of 0.8m and 5s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Cogumelo in the next 16 days are 1.7m 8s and forecast to arrive on Saturday (Aug 15) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 11s period and expected on Sunday (Aug 09) at 1PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Tue 11th Aug) | 2ft (0.6m) 7s |
| Best Surf | 4AM (Fri 14th Aug) | 3.5ft (1.0m) 10s |
| Most Powerful | 7PM (Sat 15th Aug) | 5.5ft (1.7m) 8s |
Table - best surf conditions forecast for Cogumelo over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let's be straight with you about the waves ahead. It’s gonna be a bit of a test of patience, a real tale of two weeks. The first week is nothing but frustration, and then we get a pulse of real energy from the deep blue that could make things very interesting, but you gotta know where to be.
Right now, up at Cogumelo, we’re staring down a stretch of poor conditions. The water's sitting at 67.6°, which is a bit colder than we'd expect for this time of year, so you'll want the rubber. For the next several days, we're looking at a lot of cross and cross-onshore winds, choppy surf, and weak energy readings mostly under 200. The swell is there, but it’s mostly short-period and disorganized, not enough to do anything with. Saturday the 8th and Sunday the 9th are write-offs. The wave energy is feeble (32, then 78), and the wind is messing up whatever small surf there is. Monday the 10th pushes a little more energy (118) but it’s still all over the place.
Mid-week, from the 11th to the 13th, the energy starts to climb—we see readings in the 120s, 150s, even 176—but the wind remains a constant problem from the NW, keeping the surface lumpy. There's a bit of a jump in size on the 14th and 15th, with the swell getting up to 4.9ft to 5.2ft, and the energy is strong (457, 296, 326), but the period is still short and the wind is just too on it. This is a case of more swell, same messy result. It looks tempting but it's a trap. It's all still poor surf.
Then, something shifts. After Tuesday the 18th, the swell bottoms out completely. Wednesday the 19th and Thursday the 20th are totally flat and dead. Energy readings drop to almost nothing (27, 26, 47). It’s a total blank. You can hang up the wetsuit for a few days there.
But hold on to your boards, because there's light at the end of the tunnel. On Friday the 21st, a week from this coming Friday, the ocean wakes up. We’ve got a proper pulse of NW groundswell moving in. The energy readings are massive, hitting 659 and 872. Swell heights are up around 6.2ft to 7.2ft, and the period stretches to 10 seconds. It’s still not perfect—the wind is onshore—but for the first time, there’s some real power in the water. This one is for the experienced crew. With size like that, it’s definitely too big for beginners, and at 7.2ft, only experts should be looking at it.
The 22nd and 23rd see the swell stick around at 5.9ft with energy still in the 300-500 range, but the wind is cranking from the NW, blowing 30-35 km/h. That’s going to make it lumpy and challenging. For the size and the conditions, this setup at a beach break could honestly be more interesting for the kite surfers than for paddle surfers. It's going to be a handful.
So, here's the takeaway. The first week you should probably do something else. It’s a long, flat, and sloppy stretch. The standout is absolutely that swell arriving on the 21st. It’s a long-range promise, so take it with a grain of salt, but the energy is there and it’s the only time in the window that the ocean will really wake up. It'll be big, powerful, and for experts only. A word of caution: this long-period groundswell (9-10 seconds) can sometimes break too straight at beach breaks, so keep your eyes open.
Stay patient.
Short Range ForecastMostly dry. Warm (max 26°C on Tue morning, min 17°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Wed morning, min 18°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Sat 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | ||||||||||||||
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 9 | WNW 7 | WNW 7 | WNW 7 | WNW 8 | NW 7 | NW 8 | NW 5 | NW 6 | NW 5 | NW 6 | WNW 9 | WNW 10 | WNW 9 | WNW 9 | WNW 10 | NW 6 | WNW 9 | NW 9 | NW 7 |
Wave Graph | ||||||||||||||||||||
25 | 43 | 78 | 74 | 150 | 65 | 113 | 68 | 53 | 44 | 80 | 65 | 125 | 141 | 115 | 120 | 143 | 136 | 351 | 255 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross |
High Tide | 11:48PM2.23m | 12:20PM2.44m | 1:00AM2.39m | 1:23PM2.67m | 1:57AM2.58m | 2:16PM2.91m | 2:47AM2.73m | 3:03PM3.09m | 3:31AM2.83m | 3:47PM3.18m | 4:13AM2.86m | 4:28PM3.18m | ||||||||
Low Tide | 5:27PM0.72m | 5:59AM0.71m | 6:45PM0.53m | 7:06AM0.54m | 7:46PM0.29m | 8:00AM0.34m | 8:37PM0.09m | 8:47AM0.18m | 9:22PM-0.05m | 9:30AM0.07m | 10:04PM-0.10m | 10:11AM0.04m | 10:43PM-0.06m | |||||||
— | — | 6:45 | — | — | 6:46 | — | — | 6:46 | — | — | 6:47 | — | — | 6:48 | — | — | 6:48 | — | — | |
8:37 | — | — | 8:35 | — | — | 8:34 | — | — | 8:32 | — | — | 8:31 | — | — | 8:30 | — | — | 8:29 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 20 | 24 | 24 | 20 | 25 | 23 | 19 | 26 | 24 | 19 | 27 | 25 | 20 | 27 | 26 | 22 | 26 | 25 | 20 |
Feels °C | 24 | 21 | 23 | 23 | 20 | 23 | 21 | 19 | 25 | 22 | 19 | 26 | 23 | 20 | 25 | 24 | 20 | 25 | 23 | 19 |
Swell 1 Height (m) Direction Period (s) | WNW 9 | WNW 7 | WNW 7 | NW 11 | NW 10 | W 7 | NW 11 | NW 7 | NW 6 | WNW 10 | WNW 10 | NW 5 | WNW 10 | WNW 9 | WNW 9 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | NW 9 |
25 | 43 | 78 | 29 | 24 | 15 | 5 | 25 | 53 | 19 | 39 | 35 | 125 | 141 | 115 | 120 | 125 | 136 | 106 | 110 | |
Swell 2 Height (m) Direction Period (s) | NNW 8 | N 7 | NNW 11 | N 7 | — | NW 9 | — | WNW 11 | WNW 10 | NNW 12 | NNW 11 | WNW 9 | — | NNW 9 | NW 12 | NW 12 | — | — | — | — |
6 | 1 | 13 | 1 | — | 21 | — | 11 | 10 | 15 | 11 | 65 | — | 8 | 25 | 68 | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | N 13 | N 7 | — | — | S 12 | — | N 11 | NNW 13 | NNW 9 | NNW 8 | WNW 11 | — | — | NNW 10 | — | — | — | — | — |
— | 3 | 1 | — | — | 3 | — | 2 | 17 | 8 | 7 | 24 | — | — | 9 | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | NW 3 | NW 4 | — | WNW 7 | WNW 8 | NW 7 | NW 8 | NW 5 | — | NW 5 | NW 6 | — | NW 4 | NW 6 | NW 6 | NW 5 | NW 6 | NW 6 | NW 9 | NW 7 |
7 | 14 | — | 74 | 150 | 65 | 113 | 68 | — | 44 | 80 | — | 32 | 95 | 36 | 53 | 143 | 64 | 351 | 255 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 547 | 29 | 9 | 257 | 9 | 9 | 587 | 9 | 9 | 542 | 25 | 9 | 118 | 9 | 9 | 271 | 9 | 9 | 572 | 9 |
Best forecast wave conditions in Portugal - Alentejo | ||||||||||||||||||||
Best forecast wave conditions in Portugal | ||||||||||||||||||||
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Information about the Cogumelo Surf forecast
The above surf forecast table for Cogumelo provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Cogumelo can be found by selecting the local surf guide option on the grey menu. Our Cogumelo 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 (Cogumelo) 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 Cogumelo 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.
Cogumelo is 29 km (18 miles) from Sines. If you plan a holiday in Portugal - Alentejo, look for hotels and other accommodation in Sines. Sines has rooms for a wide range of budgets as well as car hire and transport links.











