Surf Forecasts:
Cogumelo surf forecast from 13 Aug 2026:
- Best quality surf: Friday 14 Aug, 4AM (local time) - 4ft (1.2m), 7s period, NW swell with cross-offshore winds.
- Most powerful swell: Saturday 15 Aug, 10PM (local time) - 7.5ft (2.3m), 8s period, NW swell with 702 kJ wave energy.
- Next surfable swell (1★+): Thursday 13 Aug, 7AM (local time) - 3ft (0.9m), 10s period with WNW 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 Thursday (Aug 13) at 7AM. The primary swell is predicted to be 0.9m and 10s period. 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 2.3m 8s and forecast to arrive on Saturday (Aug 15) at 10PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 8s period and expected on Tuesday (Aug 18) at 4PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Thu 13th Aug) | 3ft (0.9m) 10s |
| Best Surf | 4AM (Fri 14th Aug) | 4ft (1.2m) 7s |
| Most Powerful | 10PM (Sat 15th Aug) | 7.5ft (2.3m) 8s |
Table - best surf conditions forecast for Cogumelo over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s talk about what’s on offer at Cogumelo. We’ve got a real mixed bag over the next couple of weeks, so let’s be honest about it.
The first few days are a write-off, honestly. Thursday the 13th and Friday the 14th are all about cross-onshore winds messing up the lines. The swell is there, but it’s choppy and messy. Saturday the 15th picks up a bit more size, with swell around 6 ft to 7 ft from the NW, but that moderate cross-onshore wind is just going to spoil it. It’s not one for the paddle. The combined energy is moderate to strong (443 to 551), but the quality is poor. This setup might look more interesting for kite surfing than paddle surfing.
We finally get a window of opportunity on Monday morning, the 17th of August. The wind drops right back to a light cross-onshore breeze, and the swell is still a solid 5 ft from the NW with a period of 9 seconds. The energy is still moderate (356), and while the conditions are only marginal, it’s a step up from the weekend. The best call, however, is Tuesday morning, the 18th of August. The wind goes glassy, dead calm. The swell drops a touch to 3 ft from the NW, but that glassy surface will make it feel like a different wave. The energy is moderate (168). This is the standout. For a surfer who wants clean, lined-up waves, this is your morning. This is an intermediate break, so it’s manageable for most, and with glassy conditions, it’s about as good as it gets.
There’s a serious gap after that. The swell drops to almost nothing mid-week, and the wind stays onshore. Thursday the 20th sees a pulse of longer-period NW swell (12 seconds) moving in, hitting 4 ft to 5 ft, but the wind is not cooperating. It’s a tease. The 20th afternoon has a 5 ft swell with an 11-second period, but the onshore wind will ruin it. The energy is moderate to strong (428 to 562), but it’s not worth paddling out for.
The second week is grim. From Friday the 21st through to Wednesday the 27th, it’s a lot of onshore or cross-onshore winds. The swell hangs around, but it’s almost always blown out. The best of a bad lot is Tuesday the 25th morning, with a 5 ft NW swell and a light cross-onshore breeze, but it is still only marginal. The energy is moderate (352). Don’t get your hopes up. Thursday the 27th morning has a light cross-shore wind and a 4 ft NW swell, but it’s poor.
The water temperature is about average for this time of year, not a shocker. So, wrap it up. The only real standout is Tuesday the 18th, with that glassy morning. It’s a short window, but it’s the best on offer. The rest of the time, you’re fighting the wind. A blank run is more normal for this area when the trades are up.
Rusty.
Short Range ForecastMostly dry. Warm (max 30°C on Thu morning, min 19°C on Thu night). Winds increasing (light winds from the N on Wed night, fresh winds from the NW by Sat afternoon). | Days 4-6 Weather SummarySome drizzle, heaviest during Tue afternoon. Warm (max 29°C on Mon morning, min 19°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | |||||||||||||||
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 10 | WNW 10 | WNW 10 | NW 9 | NW 9 | NW 8 | NW 8 | NW 8 | NW 8 | NW 9 | NW 9 | NW 8 | NW 9 | NW 9 | NW 8 | NW 8 | SSW 15 | NW 8 | NW 8 | SSW 14 | NW 14 |
Wave Graph | |||||||||||||||||||||
163 | 132 | 152 | 278 | 351 | 385 | 437 | 545 | 588 | 560 | 362 | 428 | 342 | 281 | 176 | 138 | 22 | 95 | 45 | 19 | 119 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross | cross-on | cross | cross-on | cross-on | cross-on | cross-on | on | glassy | cross-on | on | cross-off | glassy | cross-on | glassy | cross-on | on | glassy |
High Tide | 3:47PM3.18m | 4:13AM2.86m | 4:28PM3.18m | 4:52AM2.83m | 5:08PM3.07m | 5:31AM2.74m | 5:47PM2.88m | 6:09AM2.60m | 6:26PM2.64m | 6:47AM2.43m | 7:07PM2.37m | 7:30AM2.25m | 7:54PM2.12m | ||||||||
Low Tide | 9:30AM0.07m | 10:04PM-0.10m | 10:11AM0.04m | 10:43PM-0.06m | 10:50AM0.08m | 11:21PM0.06m | 11:29AM0.20m | 11:57PM0.24m | 12:08PM0.37m | 00:33AM0.46m | 12:48PM0.57m | 1:11AM0.68m | 1:34PM0.79m | 1:56AM0.90m | |||||||
6:48 | — | — | 6:48 | — | — | 6:50 | — | — | 6:50 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | |
— | 8:30 | — | — | 8:29 | — | — | 8:28 | — | — | 8:27 | — | — | 8:25 | — | — | 8:23 | — | — | 8:22 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — |
Temp °C | 30 | 26 | 21 | 26 | 24 | 21 | 24 | 23 | 20 | 25 | 24 | 20 | 29 | 26 | 22 | 27 | 25 | 20 | 25 | 25 | 21 |
Feels °C | 28 | 24 | 22 | 25 | 22 | 20 | 23 | 21 | 18 | 25 | 24 | 23 | 28 | 25 | 24 | 27 | 24 | 22 | 24 | 24 | 22 |
Swell 1 Height (m) Direction Period (s) | WNW 10 | WNW 10 | WNW 10 | NW 9 | — | — | S 18 | S 18 | S 16 | NW 9 | NW 9 | NW 8 | NW 9 | NW 9 | NW 8 | NW 8 | NNW 8 | NW 8 | NW 8 | NW 8 | NNW 7 |
163 | 132 | 151 | 278 | — | — | 6 | 6 | 5 | 560 | 362 | 428 | 342 | 281 | 176 | 138 | 117 | 95 | 45 | 62 | 37 | |
Swell 2 Height (m) Direction Period (s) | NW 6 | NW 12 | — | — | — | — | — | — | — | SW 16 | SW 16 | SW 15 | SW 15 | SW 16 | W 8 | WNW 8 | WNW 7 | WNW 8 | WNW 8 | WNW 8 | NW 14 |
24 | 37 | — | — | — | — | — | — | — | 10 | 10 | 8 | 8 | 10 | 6 | 6 | 5 | 6 | 6 | 6 | 119 | |
Swell 3 Height (m) Direction Period (s) | NNW 10 | — | — | — | — | — | — | — | — | — | — | — | S 18 | — | SW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | WNW 10 |
9 | — | — | — | — | — | — | — | — | — | — | — | 6 | — | 10 | 24 | 22 | 21 | 20 | 19 | 18 | |
Wind waves Height (m) Direction Period (s) | — | NW 4 | NW 6 | NNW 6 | NW 9 | NW 8 | NW 8 | NW 8 | NW 8 | — | — | — | — | — | — | — | SW 3 | SSW 3 | — | S 3 | — |
— | 28 | 152 | 61 | 351 | 385 | 437 | 545 | 588 | — | — | — | — | — | — | — | 3 | 1 | — | 1 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 9 | 73 | 9 | 9 | 333 | 85 | 91 | 681 | 327 | 29 | 77 | 0 | 11 | 67 | 0 | 0 | 67 | 0 | 11 | 11 | 0 |
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.











