Surf Forecasts:
Cogumelo surf forecast from 1 Sep 2026:
- Best quality surf: Wednesday 2 Sep, 4AM (local time) - 5ft (1.5m), 9s period, NW swell with cross-offshore winds.
- Most powerful swell: Tuesday 1 Sep, 7PM (local time) - 6ft (1.8m), 9s period, NW swell with 528 kJ wave energy.
- Next surfable swell (1★+): Wednesday 2 Sep, 4AM (local time) - 5ft (1.5m), 9s 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 Wednesday (Sep 02) at 4AM. The primary swell is predicted to be 1.5m and 9s period with a secondary swell of 0.2m and 14s. 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 1.8m 9s and forecast to arrive on Tuesday (Sep 01) 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 0.7m 12s period and expected on Sunday (Sep 06) at 4PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Wed 2nd Sep) | 5ft (1.5m) 9s |
| Best Surf | 4AM (Wed 2nd Sep) | 5ft (1.5m) 9s |
| Most Powerful | 7PM (Tue 1st Sep) | 6ft (1.8m) 9s |
Table - best surf conditions forecast for Cogumelo over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get stuck into the outlook for the home break, Cogumelo. It’s a bit of a mixed bag over the next couple of weeks, so we’ll have to pick our moments.
The forecast starts quiet, with a bit of a slow grind to kick things off. We’re looking at conditions that are far from firing, with a lot of cross-onshore chop and poor surf quality. The first real chance to get wet comes up on Wednesday, 2 September. The morning brings a cleaner window with a light cross-offshore breeze from the NNE, and while the swell is a modest 4ft from the NW with a short period of 8 seconds, it’s surfable. The combined energy of all swells directed here is moderate (248). The water temperature is sitting at 69°, which is about average for this time of year, so no surprises there.
The rest of the first week remains pretty ordinary. We get a few cleanish mornings, like Thursday 3 September with a tiny 3ft swell and nearly glassy conditions, but the wave energy is weak (89). Friday and Saturday offer similar small, clean windows but with very little punch. The real highlight, and the standout of the whole forecast, is clear as day. Look at Saturday, 12 September. The morning session is going to be the one to circle. We’ve got a clean, cross-off shore breeze from the NNE, a solid 6ft swell from the NW with a 9-second period, and the combined energy is strong (599). This is the best quality on offer, with good shape and clean conditions. The only bummer is that crowds are likely here, so you’ll want to be early.
After that, the second week drops off significantly. There’s a long gap of poor to marginal conditions from the 12th afternoon through to the 13th and into the 14th. Monday, 14 September, brings a morning window with a 3ft swell from the WNW, but the period jumps to a very long 12 seconds. That’s a groundswell, and at a beach break like this, it might break a bit too straight, but with clean conditions and a light offshore, it’s worth a look. The energy is still moderate (248). The last half-decent morning is Tuesday, 15 September, with a small 2ft NW swell and a very long 13-second period, again clean. It’s a weak wave (333) but glassy. After that, the window closes with poor onshore conditions through to the end of the 16-day run.
So, to sum it up: the best bet hands down is the morning of Saturday, 12 September. That’s your standout. For the long-range, Monday 14 and Tuesday 15 mornings are promising but less certain. Get out there when you can.
Rusty out.
Short Range ForecastMostly dry. Warm (max 35°C on Thu afternoon, min 15°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 38°C on Sat morning, min 20°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | |||||||||||||||
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) | NW 9 | NW 9 | NW 9 | NW 8 | NW 8 | NW 7 | NW 7 | NW 7 | WNW 8 | WNW 8 | WNW 8 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 6 | NW 6 | NW 6 | NW 6 |
Wave Graph | |||||||||||||||||||||
456 | 421 | 399 | 227 | 167 | 171 | 73 | 59 | 48 | 46 | 44 | 86 | 118 | 118 | 115 | 79 | 202 | 136 | 81 | 120 | 181 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross-off | cross-on | cross-off | cross-off | cross-on | glassy | cross-off | cross | cross-on | cross-off | cross-on | cross-off | glassy | cross-on | cross | cross | cross-on | cross |
High Tide | 5:48PM2.73m | 6:11AM2.59m | 6:32PM2.54m | 6:58AM2.44m | 7:27PM2.32m | 7:59AM2.28m | 8:42PM2.13m | 9:24AM2.19m | 10:21PM2.06m | 10:59AM2.25m | 11:51PM2.17m | 12:16PM2.46m | 00:57AM2.37m | ||||||||
Low Tide | 11:33AM0.27m | 11:57PM0.31m | 12:15PM0.41m | 00:40AM0.49m | 1:06PM0.58m | 1:34AM0.70m | 2:16PM0.76m | 2:50AM0.87m | 3:53PM0.83m | 4:31AM0.91m | 5:33PM0.72m | 5:58AM0.77m | 6:45PM0.49m | ||||||||
7:03 | — | — | 7:05 | — | — | 7:05 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:09 | — | — | |
— | 8:05 | — | — | 8:02 | — | — | 8:01 | — | — | 8:00 | — | — | 7:59 | — | — | 7:57 | — | — | 7:55 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 23 | 19 | 27 | 27 | 24 | 33 | 35 | 29 | 36 | 37 | 29 | 38 | 30 | 25 | 27 | 26 | 22 | 27 | 25 | 21 |
Feels °C | 19 | 20 | 17 | 25 | 24 | 23 | 30 | 32 | 28 | 35 | 35 | 29 | 35 | 27 | 27 | 29 | 25 | 22 | 25 | 23 | 20 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 15 | SSW 14 | NW 8 | SSW 15 | NW 7 | NW 7 | NW 7 | WNW 8 | WNW 8 | WNW 8 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NNW 12 | NNW 11 | NW 6 | WNW 10 | NW 11 |
9 | 8 | 21 | 227 | 23 | 171 | 73 | 59 | 48 | 46 | 44 | 86 | 118 | 118 | 115 | 79 | 121 | 101 | 81 | 86 | 165 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | SSW 15 | — | SW 14 | WNW 9 | SW 14 | NNW 6 | NNW 5 | NW 5 | NW 5 | S 12 | S 12 | NW 15 | NW 4 | S 11 | WNW 9 | WNW 8 | NW 12 | WNW 9 |
— | — | — | 21 | — | 8 | 8 | 8 | 27 | 11 | 13 | 22 | 3 | 3 | 9 | 12 | 2 | 31 | 40 | 53 | 31 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | SW 14 | — | SW 14 | SW 13 | SW 13 | SW 13 | S 12 | S 12 | S 12 | NNW 13 | — | NW 13 | NNW 10 | NW 12 | — |
— | — | — | — | — | — | 8 | — | 7 | 7 | 7 | 7 | 3 | 3 | 3 | 68 | — | 7 | 38 | 53 | — | |
Wind waves Height (m) Direction Period (s) | NW 9 | NW 9 | NW 9 | — | NW 8 | — | — | — | — | — | — | — | — | — | — | NNW 4 | NW 9 | NW 6 | — | NW 6 | NW 6 |
456 | 421 | 399 | — | 167 | — | — | — | — | — | — | — | — | — | — | 13 | 202 | 136 | — | 120 | 181 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 85 | 675 | 9 | 0 | 77 | 0 | 0 | 9 | 0 | 0 | 9 | 11 | 25 | 51 | 0 | 0 | 73 | 9 | 85 | 678 | 9 |
Best forecast wave conditions in Portugal - Alentejo | |||||||||||||||||||||
Best forecast wave conditions in Portugal | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.











