Surf Forecasts:
Bicas surf forecast from 1 Aug 2026:
- Best quality surf: Monday 3 Aug, 7AM (local time) - 1.5ft (0.5m), 9s period, W swell with glassy winds.
- Most powerful swell: Thursday 6 Aug, 7PM (local time) - 4ft (1.2m), 9s period, NW swell with 251 kJ wave energy.
- Next surfable swell (1★+): Monday 3 Aug, 7AM (local time) - 1.5ft (0.5m), 9s period with W 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 Monday (Aug 03) at 7AM. The primary swell is predicted to be 0.5m and 9s period with a secondary swell of 0.2m and 3s. 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 9s and forecast to arrive on Thursday (Aug 06) 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+) | 7AM (Mon 3rd Aug) | 1.5ft (0.5m) 9s |
| Best Surf | 7AM (Mon 3rd Aug) | 1.5ft (0.5m) 9s |
| Most Powerful | 7PM (Thu 6th Aug) | 4ft (1.2m) 9s |
Table - best surf conditions forecast for Bicas over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s coming up.
Honestly, the outlook is a bit of a bummer. We’re looking at Bicas, a reef break that rarely breaks, and for the entire 16-day window, the conditions are just no good. The water is a bit colder than normal for this time of year, sitting at 66°F.
There’s no standout surf on offer. The whole period is filled with “poor surf conditions” and onshore winds, which is a real shame for a spot that needs a specific swell window from the west to work. The swell energy is mostly weak, with values under 100 for the first week, and only occasionally climbing into the moderate range (100 to 408) in the second week, but it’s always paired with onshore wind.
From Saturday the 1st right through to Sunday the 16th, it’s the same story. The largest swell we see hits around the 15th and 16th, with 6 ft from the NW, but the period is short at 8 seconds, and the wind is always onshore or cross-onshore. That’s not going to be clean. The energy does get up to 408 (moderate) on the 15th, but it’s wasted with that wind.
For a spot that rarely breaks, this is a long dry spell. It’s a bit of a blank run, but for an inconsistent spot like this, that’s not unusual. We’ll have to wait for a change in the pattern.
Rusty, signing off.
Short Range ForecastMostly dry. Warm (max 25°C on Sat morning, min 19°C on Sat night). Winds decreasing (fresh winds from the NW on Sat afternoon, calm by Mon night). | Days 4-6 Weather SummaryMostly dry. Warm (max 24°C on Thu morning, min 18°C on Wed night). Winds increasing (light winds from the SW on Tue morning, fresh winds from the NW by Thu afternoon). | ||||||||||||||||||||
Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 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) | W 9 | WNW 8 | W 9 | W 9 | WNW 10 | W 10 | W 9 | WNW 9 | W 7 | W 9 | W 8 | WNW 8 | W 8 | WNW 8 | WNW 7 | NNW 10 | NW 10 | W 9 | NW 8 | WNW 9 | W 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 78 | 193 | 56 | 54 | 135 | 47 | 42 | 82 | 64 | 99 | 92 | 92 | 61 | 94 | 46 | 39 | 235 | 45 | 45 | 28 | 39 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | cross | cross | on | cross | cross-on | on | on | on | cross-on | on | on | on | on | on | on |
High Tide | 5:12PM3.32m | 5:32AM3.07m | 5:46PM3.28m | 6:07AM3.03m | 6:24PM3.19m | 6:48AM2.96m | 7:06PM3.07m | 7:35AM2.87m | 7:59PM2.92m | 8:34AM2.78m | 9:06PM2.77m | 9:49AM2.74m | 10:31PM2.69m | ||||||||
Low Tide | 10:54AM0.84m | 11:23PM0.79m | 11:28AM0.86m | 11:57PM0.83m | 12:04PM0.91m | 00:35AM0.90m | 12:46PM1.00m | 1:19AM1.01m | 1:37PM1.12m | 2:12AM1.14m | 2:42PM1.24m | 3:21AM1.26m | 4:06PM1.29m | ||||||||
 | |  |  |  |  | | | | | | | | | | | | | | | | |
 | 6:37 | — | — | 6:39 | — | — | 6:39 | — | — | 6:39 | — | — | 6:41 | — | — | 6:41 | — | — | 6:43 | — | — |
 | — | 8:46 | — | — | 8:45 | — | — | 8:45 | — | — | 8:44 | — | — | 8:43 | — | — | 8:42 | — | — | 8:40 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 24 | 20 | 21 | 22 | 20 | 22 | 22 | 21 | 23 | 23 | 21 | 23 | 23 | 20 | 24 | 24 | 20 | 22 | 22 | 20 |
Feels °C | 22 | 20 | 18 | 18 | 19 | 19 | 22 | 22 | 22 | 23 | 21 | 21 | 21 | 19 | 17 | 20 | 18 | 17 | 19 | 18 | 19 |
Swell 1 Height (m) Direction Period (s) | W 9 | NW 8 | W 9 | W 9 | NNW 8 | W 10 | W 9 | WNW 9 | W 7 | W 9 | W 8 | WNW 8 | W 8 | NW 9 | WNW 10 | NNW 10 | S 13 | W 9 | NW 8 | NNW 8 | W 9 |
| kJ | 78 | 3 | 56 | 54 | 6 | 47 | 42 | 82 | 64 | 99 | 92 | 92 | 61 | 21 | 33 | 39 | 3 | 45 | 45 | 26 | 39 |
Swell 2 Height (m) Direction Period (s) | NW 10 | — | NNW 8 | NNW 8 | NNW 8 | NW 7 | NW 5 | N 7 | WNW 9 | S 13 | SW 13 | NNW 11 | WNW 10 | S 12 | NW 9 | WNW 10 | — | NNW 9 | WNW 9 | WNW 9 | NNW 8 |
| kJ | 4 | — | 6 | 6 | 6 | 2 | 1 | 1 | 45 | 3 | 7 | 11 | 20 | 3 | 20 | 32 | — | 31 | 28 | 28 | 13 |
Swell 3 Height (m) Direction Period (s) | N 9 | — | — | — | — | NNW 5 | N 7 | S 14 | SW 13 | N 8 | S 13 | SW 12 | NW 10 | S 12 | S 12 | WNW 6 | — | S 13 | S 12 | S 12 | S 12 |
| kJ | 2 | — | — | — | — | 3 | 1 | 4 | 7 | 1 | 3 | 6 | 24 | 3 | 3 | 14 | — | 3 | 3 | 3 | 3 |
Wind waves Height (m) Direction Period (s) | NW 6 | WNW 8 | NW 5 | NW 6 | WNW 10 | NW 3 | — | WSW 2 | — | — | — | NW 3 | — | WNW 8 | WNW 7 | NNW 5 | NW 10 | NW 5 | — | WNW 3 | W 3 |
| kJ | 16 | 193 | 22 | 21 | 135 | 3 | — | 1 | — | — | — | 6 | — | 94 | 46 | 11 | 235 | 21 | — | 3 | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 20 | 27 | 20 | 98 | 463 | 30 | 39 | 103 | 27 | 102 | 159 | 30 | 28 | 328 | 31 | 175 | 488 | 31 | 98 | 463 | 82 |
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.
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