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Sao Joao surfForecast / Lisboa / Portugal
12 Day Weather and Surf, issued 12 pm Sunday 03 Aug 2025 WEST
Best Forecast Surf Conditions for Sao Joao this week:
The surf forecast for Sao Joao over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 04) at 1AM. The primary swell is predicted to be 1.3m and 8s period with a secondary swell of 0.1m and 15s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Sao Joao in the next 12 days are 1.5m 12s and forecast to arrive on Thursday (Aug 07) at 1AM. Winds are predicted to be glassy at the time the swell arrives.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Mon 4th Aug) | 4.5ft (1.3m) 8s |
| Best Surf | 10AM (Wed 6th Aug) | 4.5ft (1.4m) 9s |
| Most Powerful | 1AM (Thu 7th Aug) | 5ft (1.5m) 12s |
Table - best surf conditions forecast for Sao Joao over the next 12 days.
Short Range Forecast Mostly dry. Warm (max 32°C on Sun afternoon, min 20°C on Tue night). Wind will be generally light. | Days 3-6 Weather Summary Mostly dry. Warm (max 27°C on Wed morning, min 17°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Sunday 03 | Monday 04 | Tuesday 05 | Wednesday 06 | Thursday 07 | Friday 08 | Saturday 09 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 9 | 8 | 8 | 8 | 7 | 7 | 8 | 8 | 10 | 9 | 10 | 12 | 11 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 10 |
Wave (?)Graph  | |||||||||||||||||||||
| Energy (?) | 429 | 346 | 218 | 153 | 188 | 111 | 182 | 240 | 449 | 611 | 531 | 687 | 457 | 383 | 236 | 158 | 105 | 106 | 101 | 139 | 153 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross- on | glass | cross- off | on | glass | cross- off | cross- on | glass | glass | on | glass | cross- on | on | cross- on | on | on | cross | glass | cross- on | off |
High Tide / height (m) | 10:28AM 1.96 | 11:08PM 1.89 | 11:46AM 2.02 | 12:23AM 1.96 | 12:50PM 2.16 | 1:19AM 2.10 | 1:39PM 2.34 | 2:03AM 2.27 | 2:20PM 2.53 | 2:43AM 2.42 | 2:58PM 2.72 | 3:19AM 2.56 | 3:34PM 2.88 | 3:56AM 2.67 | |||||||
Low Tide / height (m) | 4:47PM 1.05 | 5:17AM 1.03 | 6:08PM 0.97 | 6:27AM 0.94 | 7:09PM 0.83 | 7:21AM 0.78 | 7:55PM 0.64 | 8:04AM 0.61 | 8:35PM 0.46 | 8:42AM 0.44 | 9:12PM 0.28 | 9:18AM 0.29 | 9:48PM 0.14 | ||||||||
Sunday 03 | Monday 04 | Tuesday 05 | Wednesday 06 | Thursday 07 | Friday 08 | Saturday 09 | |||||||||||||||
| Sunrise | 6:39 | - | - | 6:39 | - | - | 6:41 | - | - | 6:41 | - | - | 6:43 | - | - | 6:43 | - | - | 6:45 | - | - |
| Sunset | - | 8:45 | - | - | 8:45 | - | - | 8:44 | - | - | 8:43 | - | - | 8:40 | - | - | 8:39 | - | - | 8:38 | - |
 | |  | | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 31 | 32 | 26 | 25 | 27 | 26 | 27 | 27 | 24 | 27 | 26 | 21 | 22 | 22 | 18 | 22 | 23 | 20 | 28 | 30 | 26 |
| Feels °C (?) | 30 | 29 | 25 | 25 | 27 | 27 | 28 | 27 | 26 | 27 | 25 | 22 | 21 | 21 | 18 | 21 | 21 | 19 | 28 | 27 | 25 |
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Recent Eyeball Surf Reports for Lisboa
Continuing clean conditions at Sao Joao (calm at Cascais 8 km from Sao Joao). 1.5m 8s swell from the NNW with a 0.8m 12s groundswell from the W. 2 swells combining to make bigger set waves.
Actual: 56 min ago
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Sao Joao surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Sao Joao Surf forecast
The above surf forecast table for Sao Joao provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Sao Joao can be found by selecting the local surf guide option on the grey menu. Our Sao Joao 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 (Sao Joao) 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 Sao Joao 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.
Sao Joao is 4 km (2 miles) from Paco de Arcos. If you plan a holiday in Lisboa, look for hotels and other accommodation in Paco de Arcos. Paco de Arcos has rooms for a wide range of budgets as well as car hire and transport links.
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