
Surf Forecasts:
Cogumelo surf forecast from 10 Aug 2026:
- Best quality surf: Thursday 13 Aug, 4AM (local time) - 3ft (0.9m), 9s period, WNW swell with cross-offshore winds.
- Most powerful swell: Friday 14 Aug, 4AM (local time) - 5ft (1.5m), 9s period, NW swell with 375 kJ wave energy.
- Next surfable swell (1★+): Tuesday 11 Aug, 7AM (local time) - 2.5ft (0.7m), 5s 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 7AM. The primary swell is predicted to be 0.7m and 5s period with a secondary swell of 0.4m and 7s. 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 1.5m 9s and forecast to arrive on Friday (Aug 14) at 4AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Thursday (Aug 13) at 10PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Tue 11th Aug) | 2.5ft (0.7m) 5s |
| Best Surf | 4AM (Thu 13th Aug) | 3ft (0.9m) 9s |
| Most Powerful | 4AM (Fri 14th Aug) | 5ft (1.5m) 9s |
Table - best surf conditions forecast for Cogumelo over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s comin’ up for the next couple of weeks.
Right off the bat, we’ve got a pretty grim stretch ahead. The first week is looking like a write-off, with nothing but small, choppy, cross-onshore junk. From Monday the 10th right through to Sunday the 16th, it’s all poor surf conditions with heights barely cracking 5 ft but with a messy wind ruining any chance of a decent wave. The swell energy is weak to moderate at best, with readings like 121 (moderate) early on, but it’s all short-period windswell from the NW, so it’s just a crumbly, bumpy mess. The water temp is 67°, which is a bit colder than normal for this time of year, so you’ll want a decent suit.
There’s a glimmer of hope on Tuesday morning the 18th. The wind finally swings around to a light cross-off from the NNE, and the conditions clean right up. The swell is still tiny at 3 ft from the NW, and the energy is weak (104), but it’s surfable. It’s not a standout, just a chance to get wet if you’re desperate.
Then we hit a real dry spell. Wednesday the 19th through Friday the 21st is mostly flat or tiny, with a weird 0.7 ft groundswell from the SSW on the 19th that has a deep 14-second period, but no size to work with and onshore winds. The energy is pitiful (28). Friday morning the 21st turns glassy with a 3 ft WNW swell, but it’s still just ordinary.
Now, the real action starts on Saturday the 22nd. Saturday morning, the wind goes glassy, and we get a clean 5 ft NW swell with moderate energy (252). It’s short period at 7 seconds, so it’ll be a bit soft and fat, but it’s the first proper surfable day in ages. The standouts, though, are Sunday the 23rd. Sunday morning is glassy with a 3 ft NW groundswell that has a solid 12-second period, but the energy is already strong (790). The real gem is Sunday afternoon: the wind is glassy, the swell jumps to 6 ft from the NW with a 11-second period, and the energy is a massive 1260. That’s excellent surf for experienced surfers, but at 6 ft it’s getting big, so beginners should sit this one out. The break is Cogumelo, which is exposed and fairly consistent, with an offshore from the E and crowds often. It’s a point break or reef setup, so that long-period groundswell will wrap in nicely, a good fit for the optimum SW direction.
Monday the 24th still has size, with a 4 ft WNW swell from a deep 14-second period in the morning, but the wind is onshore, so it’s a bit iffy. Energy is still huge (1056), but the wind is the enemy. Tuesday the 25th morning cleans up again with glassy conditions and a 4 ft WNW swell, so a solid option if you missed the Sunday blast.
The one true standout is Sunday the 23rd afternoon. Go for it.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Thu morning, min 17°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 28°C on Fri morning, min 18°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Mon 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | ||||||||||||||
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) | NW 8 | NW 5 | NW 6 | NW 5 | NW 6 | NW 6 | WNW 10 | WNW 9 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | NW 9 | NW 7 | NW 8 | NW 8 | NW 9 | NW 8 | NW 8 | NW 8 |
Wave Graph | ||||||||||||||||||||
113 | 48 | 27 | 40 | 92 | 46 | 125 | 156 | 163 | 132 | 172 | 212 | 318 | 336 | 257 | 277 | 328 | 286 | 227 | 149 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross-on |
High Tide | 1:57AM2.58m | 2:16PM2.91m | 2:47AM2.73m | 3:03PM3.09m | 3:31AM2.83m | 3:47PM3.18m | 4:13AM2.86m | 4:28PM3.18m | 4:52AM2.83m | 5:08PM3.07m | 5:31AM2.74m | 5:47PM2.88m | ||||||||
Low Tide | 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 | 10:50AM0.08m | 11:21PM0.06m | 11:29AM0.20m | 11:57PM0.24m | |||||||
— | — | 6:46 | — | — | 6:47 | — | — | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — | 6:50 | — | — | |
8:34 | — | — | 8:32 | — | — | 8:31 | — | — | 8:30 | — | — | 8:29 | — | — | 8:28 | — | — | 8:27 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 19 | 25 | 24 | 19 | 28 | 25 | 21 | 29 | 26 | 21 | 28 | 25 | 21 | 24 | 23 | 20 | 23 | 23 | 19 |
Feels °C | 22 | 19 | 24 | 23 | 19 | 27 | 23 | 22 | 27 | 24 | 22 | 26 | 23 | 19 | 23 | 21 | 19 | 22 | 22 | 18 |
Swell 1 Height (m) Direction Period (s) | NW 11 | NW 7 | NW 6 | WNW 10 | WNW 10 | NW 6 | WNW 10 | WNW 9 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | NW 8 | NW 8 | NW 8 | NW 9 | NW 8 | NW 8 | NW 8 |
5 | 25 | 27 | 19 | 39 | 36 | 125 | 156 | 163 | 132 | 172 | 212 | 141 | 105 | 257 | 277 | 328 | 286 | 227 | 149 | |
Swell 2 Height (m) Direction Period (s) | S 12 | W 6 | WNW 10 | NNW 9 | NNW 11 | WNW 9 | NNW 9 | NNW 9 | NW 6 | NW 12 | — | — | — | — | S 18 | NNW 8 | S 16 | SW 16 | SW 16 | SW 15 |
3 | 3 | 10 | 8 | 11 | 46 | 17 | 8 | 38 | 37 | — | — | — | — | 6 | 7 | 5 | 10 | 10 | 8 | |
Swell 3 Height (m) Direction Period (s) | — | WNW 11 | NNW 13 | NNW 12 | NW 9 | WNW 11 | — | — | NNW 10 | NW 9 | — | — | — | — | — | S 18 | — | — | — | — |
— | 11 | 17 | 15 | 3 | 40 | — | — | 9 | 3 | — | — | — | — | — | 6 | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | NW 8 | NW 5 | NW 5 | NW 5 | NW 6 | — | NW 5 | NW 6 | — | NW 6 | NNW 6 | NNW 6 | NW 9 | NW 7 | — | — | — | — | — | — |
113 | 48 | 20 | 40 | 92 | — | 30 | 98 | — | 44 | 155 | 36 | 318 | 336 | — | — | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 118 | 9 | 29 | 542 | 25 | 9 | 73 | 9 | 9 | 73 | 9 | 9 | 333 | 9 | 9 | 734 | 85 | 97 | 590 | 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.











