
Surf Forecasts:
Bicas surf forecast from 23 Jul 2026:
- Best quality surf: Tuesday 28 Jul, 7AM (local time) - 3.5ft (1.0m), 9s period, NNW swell with glassy winds.
- Most powerful swell: Tuesday 28 Jul, 7PM (local time) - 4ft (1.2m), 10s period, NW swell with 268 kJ wave energy.
- Next surfable swell (1★+): Tuesday 28 Jul, 4AM (local time) - 2.5ft (0.7m), 10s period with NW swell.
Best Forecast Surf Conditions for Bicas this week:
The surf forecast for Bicas over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Jul 28) at 4AM. The primary swell is predicted to be 0.7m and 10s period with a secondary swell of 0.3m and 9s. Another secondary swell of 0.3m and 5s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Bicas in the next 16 days are 1.2m 10s and forecast to arrive on Tuesday (Jul 28) at 7PM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Tue 28th Jul) | 2.5ft (0.7m) 10s |
| Best Surf | 7AM (Tue 28th Jul) | 3.5ft (1.0m) 9s |
| Most Powerful | 7PM (Tue 28th Jul) | 4ft (1.2m) 10s |
Table - best surf conditions forecast for Bicas over the next 16 days.
The Lowdown
Right folks, Rusty here. Let’s be straight with you – we’ve got a 16-day window on the table and it’s a tough one. The only break on the radar is Bicas, a reef setup that rarely breaks and even when it does, it’s an advanced wave. The whole run is a real struggle. Between the first surf recommendation on Thursday the 23rd of July and the last decent looking window on Tuesday the 4th of August, there’s a solid 12-day gap where the surf is just poor. After that, it’s right back to the same story. So, temper your expectations.
We start off on Thursday morning the 23rd of July at Bicas. Swell is tiny at 1.6 ft out of the WNW, with a short period of 5 seconds. The wind is NW at 9 mph, blowing straight onshore, and the combined energy is a weak 39. It’s just poor surf conditions. The water temp is a normal 68.5° for the time of year. Nothing to get excited about. Thursday afternoon bumps up to 3.0 ft and a 9 second period, but the wind picks up to 19 mph onshore, so it’s messy.
Friday the 24th keeps the pattern going: 2.0 ft to 3.3 ft waves, onshore wind, poor conditions. Saturday the 25th sees a slight increase with 3.6 ft to 4.6 ft swell from the NW, period at 7 seconds, and the combined energy hits 127 in the morning, climbing to 186 in the afternoon. But the wind is blowing 16 to 22 mph onshore, completely ruining any chance of a clean wave. Just a blown-out mess.
Sunday the 26th is similar. 3.6 ft to 4.3 ft, NW wind, and the cross-onshore breeze makes it choppy. The energy is moderate at 156 and 183, but it’s all windslop. The whole first week is a write-off. Onshore winds and poor surf conditions are the only story.
The only glimmer of hope comes on Tuesday the 4th of August. The morning at Bicas shows a 1.6 ft swell from the W, but with an 11-second period, that’s some longer period energy. The wind is SSW at 6 mph, blowing cross-offshore, which means clean conditions. The combined energy is 70, still weak, but the wave comment says “surfable waves but very ordinary conditions.” That’s the best we get. It’s a tiny waist-high wave, clean, but it’s a rare break that’s inconsistent. For a surfer who knows the reef, it might be worth a paddle. But don’t expect much.
The rest of the run after that is poor again. The 5th of August has 2.0 ft to 2.3 ft with onshore wind, and the 6th is 2.3 ft to 2.6 ft with the same story. The whole thing is a dud. For a spot that rarely breaks, this is a very normal, empty run.
Stay patient, crew. The ocean will come around.
Short Range ForecastMostly dry. Warm (max 21°C on Thu morning, min 19°C on Thu night). Winds increasing (light winds from the NW on Thu morning, fresh winds from the NW by Sat afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 29°C on Tue afternoon, min 20°C on Sun night). Winds decreasing (strong winds from the NW on Sun afternoon, calm by Mon night). | ||||||||||||||||||||
Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | |||||||||||||||
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 9 | WNW 9 | WNW 6 | WNW 6 | WNW 6 | WNW 6 | NW 7 | NW 7 | NW 7 | NW 8 | NW 8 | NW 7 | NW 8 | NW 8 | NW 9 | NW 10 | NW 10 | NW 10 | NW 9 | NW 7 | NW 8 |
Wave Graph | |||||||||||||||||||||
16 | 113 | 30 | 24 | 62 | 75 | 116 | 178 | 222 | 143 | 179 | 104 | 57 | 55 | 103 | 117 | 157 | 47 | 41 | 77 | 67 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | on | on | cross-on | cross-on | on | cross-on | cross | cross-on | on | on | on | on | on | on | on |
High Tide | 10:46AM2.59m | 11:19PM2.53m | 11:54AM2.63m | 00:27AM2.54m | 12:53PM2.73m | 1:23AM2.62m | 1:42PM2.86m | 2:08AM2.73m | 2:23PM2.99m | 2:46AM2.84m | 2:59PM3.11m | 3:21AM2.93m | 3:34PM3.21m | 3:54AM3.01m | |||||||
Low Tide | 5:08PM1.47m | 5:35AM1.46m | 6:21PM1.42m | 6:36AM1.41m | 7:19PM1.31m | 7:27AM1.32m | 8:04PM1.19m | 8:08AM1.21m | 8:42PM1.07m | 8:45AM1.09m | 9:16PM0.96m | 9:19AM0.99m | 9:48PM0.87m | ||||||||
6:30 | — | — | 6:31 | — | — | 6:31 | — | — | 6:33 | — | — | 6:33 | — | — | 6:33 | — | — | 6:35 | — | — | |
— | 8:54 | — | — | 8:53 | — | — | 8:52 | — | — | 8:52 | — | — | 8:52 | — | — | 8:51 | — | — | 8:50 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 21 | 20 | 20 | 21 | 20 | 21 | 21 | 20 | 25 | 25 | 21 | 27 | 26 | 25 | 27 | 29 | 26 | 24 | 26 | 23 |
Feels °C | 19 | 18 | 19 | 19 | 18 | 18 | 19 | 16 | 17 | 21 | 19 | 18 | 24 | 24 | 24 | 24 | 25 | 23 | 23 | 23 | 21 |
Swell 1 Height (m) Direction Period (s) | WNW 5 | SW 12 | WNW 9 | WNW 8 | N 8 | WNW 8 | S 12 | S 12 | S 11 | NW 8 | S 15 | WNW 9 | NW 8 | NW 8 | NW 9 | NW 10 | W 12 | NW 10 | NW 6 | WNW 11 | WNW 10 |
16 | 6 | 15 | 14 | 1 | 7 | 3 | 3 | 2 | 143 | 4 | 15 | 57 | 55 | 103 | 117 | 3 | 47 | 25 | 22 | 19 | |
Swell 2 Height (m) Direction Period (s) | WNW 9 | N 9 | S 12 | NW 8 | S 11 | S 12 | S 16 | S 16 | — | WNW 10 | — | NW 13 | WNW 9 | NW 11 | WNW 9 | WNW 8 | S 13 | WNW 8 | NW 9 | NW 9 | S 12 |
16 | 1 | 3 | 3 | 2 | 3 | 5 | 5 | — | 9 | — | 7 | 15 | 29 | 15 | 7 | 3 | 6 | 41 | 13 | 3 | |
Swell 3 Height (m) Direction Period (s) | SW 13 | — | N 8 | S 11 | — | — | S 12 | — | — | S 15 | — | — | NNW 12 | WNW 9 | — | — | — | W 11 | W 11 | — | — |
7 | — | 1 | 2 | — | — | 3 | — | — | 4 | — | — | 14 | 15 | — | — | — | 2 | 10 | — | — | |
Wind waves Height (m) Direction Period (s) | — | WNW 9 | WNW 6 | WNW 6 | WNW 6 | WNW 6 | NW 7 | NW 7 | NW 7 | — | NW 8 | NW 7 | — | WNW 7 | — | — | NW 10 | NW 5 | — | NW 7 | NW 8 |
— | 113 | 30 | 24 | 62 | 75 | 116 | 178 | 222 | — | 179 | 104 | — | 26 | — | — | 157 | 29 | — | 77 | 67 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 437 | 630 | 82 | 511 | 962 | 226 | 160 | 960 | 371 | 175 | 175 | 20 | 1 | 137 | 5 | 20 | 451 | 20 | 28 | 157 | 20 |
Best forecast wave conditions in Lisboa | |||||||||||||||||||||
Best forecast wave conditions in Portugal | |||||||||||||||||||||
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Information about the Bicas Surf forecast
The above surf forecast table for Bicas provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Bicas can be found by selecting the local surf guide option on the grey menu. Our Bicas 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 (Bicas) 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 Bicas 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.
Bicas is 9 km (6 miles) from Sesimbra. If you plan a holiday in Lisboa, look for hotels and other accommodation in Sesimbra. Sesimbra has rooms for a wide range of budgets as well as car hire and transport links.










