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Surf Forecasts:
Sao Joao surfForecast / Lisboa / Portugal
16 Day Weather and Surf, issued 12 am Wednesday 06 May 2026 WESTForecast update in hr min s Forecast update imminent
Sao Joao surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Sao Joao sea temperature is
17.9° C
(Which is 1.6°C warmer than normal for this time of year)Best Forecast Surf Conditions for Sao Joao this week:
The surf forecast for Sao Joao over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (May 08) at 1AM. The primary swell is predicted to be 0.9m and 9s period with a secondary swell of 0.1m and 16s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Sao Joao in the next 16 days are 3.0m 10s and forecast to arrive on Sunday (May 10) at 4AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Saturday (May 09) at 1AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Fri 8th May) | 3ft (0.9m) 9s |
| Best Surf | 4AM (Sun 10th May) | 10ft (3.0m) 10s |
| Most Powerful | 4AM (Sun 10th May) | 10ft (3.0m) 10s |
Table - best surf conditions forecast for Sao Joao over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 18°C on Wed morning, min 13°C on Tue night). Winds decreasing (fresh winds from the NW on Wed afternoon, calm by Thu night). | Days 4-6 Weather SummaryHeavy rain (total 34mm), heaviest during Fri night. Very mild (max 18°C on Sun afternoon, min 14°C on Fri night). Winds decreasing (fresh winds from the SSW on Sat morning, light winds from the SW by Mon morning). | ||||||||||||||||||||
Wednesday 6 | Thursday 7 | Friday 8 | Saturday 9 | Sunday 10 | Monday 11 | Tuesday 12 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
NNW 8 | NNW 8 | NNW 8 | NNW 7 | NNW 7 | NNW 9 | NNW 8 | NNW 8 | SW 7 | SW 8 | SW 9 | SW 10 | WSW 9 | WSW 10 | NNW 11 | NNW 12 | NNW 11 | NNW 10 | NNW 10 | NNW 10 | NNW 9 | |
379 | 344 | 238 | 148 | 105 | 119 | 56 | 41 | 114 | 503 | 1420 | 1509 | 845 | 1042 | 347 | 874 | 878 | 592 | 410 | 318 | 213 | |
Wind (km/h) | |||||||||||||||||||||
cross | cross-on | cross | cross-on | on | glassy | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | on | cross | cross | cross | cross | |
High Tide | 5:52AM2.22m | 6:08PM2.35m | 6:33AM2.07m | 6:54PM2.23m | 7:25AM1.95m | 7:51PM2.14m | 8:32AM1.89m | 8:59PM2.10m | 9:48AM1.91m | 10:09PM2.16m | 10:56AM2.03m | 11:12PM2.28m | 11:53AM2.21m | 00:06AM2.45m | |||||||
Low Tide | 11:47AM0.70m | 00:23AM0.72m | 12:28PM0.83m | 1:13AM0.85m | 1:19PM0.93m | 2:17AM0.92m | 2:26PM1.00m | 3:30AM0.91m | 3:42PM0.99m | 4:40AM0.80m | 4:53PM0.89m | 5:37AM0.63m | 5:52PM0.72m | ||||||||
 | |  |  |  | | | |  |  |  | | | | | | |  | | | | |
 | 6:33 | — | — | 6:33 | — | — | 6:31 | — | — | 6:31 | — | — | 6:30 | — | — | 6:28 | — | — | 6:28 | — | — |
 | — | 8:32 | — | — | 8:34 | — | — | 8:35 | — | — | 8:36 | — | — | 8:37 | — | — | 8:37 | — | — | 8:37 | — |
— | — | — | — | — | — | — | — | 16 | 3 | 2 | 2 | — | — | 10 | 1 | — | — | — | — | — | |
Temp °C | 18 | 18 | 14 | 17 | 17 | 15 | 17 | 18 | 16 | 17 | 17 | 15 | 17 | 18 | 15 | 18 | 18 | 16 | 17 | 17 | 13 |
13 | 12 | 10 | 13 | 13 | 13 | 12 | 13 | 11 | 12 | 12 | 10 | 13 | 14 | 12 | 15 | 14 | 16 | 12 | 10 | 8 | |
Swell 1 Height (m) Direction Period (s) | WSW 8 | WSW 8 | NNW 11 | NW 10 | NNW 7 | NNW 9 | NNW 8 | NNW 8 | SW 7 | W 12 | NW 12 | NNW 12 | NNW 11 | NNW 12 | W 8 | NNW 12 | NNW 11 | NNW 10 | NNW 10 | NNW 10 | NNW 9 |
 kJ | 11 | 6 | 12 | 25 | 105 | 119 | 56 | 39 | 114 | 106 | 154 | 184 | 163 | 211 | 317 | 874 | 878 | 592 | 410 | 318 | 213 |
Swell 2 Height (m) Direction Period (s) | — | W 9 | W 9 | W 8 | NW 10 | W 16 | WNW 15 | WNW 14 | W 13 | NNW 13 | W 12 | WNW 11 | WNW 11 | S 15 | NNW 11 | WSW 8 | WSW 7 | WSW 7 | SW 6 | SW 6 | SW 6 |
| kJ | — | 2 | 6 | 5 | 23 | 5 | 42 | 41 | 89 | 70 | 101 | 167 | 121 | 4 | 347 | 165 | 105 | 57 | 31 | 18 | 9 |
Swell 3 Height (m) Direction Period (s) | S 16 | SW 16 | S 15 | SW 15 | W 8 | W 8 | SW 13 | SW 13 | NW 7 | NNW 7 | WNW 9 | — | S 16 | — | SSW 7 | SW 18 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 15 |
| kJ | 5 | 10 | 4 | 8 | 1 | 1 | 7 | 7 | 13 | 5 | 8 | — | 5 | — | 26 | 13 | 30 | 27 | 25 | 25 | 21 |
Wind waves Height (m) Direction Period (s) | NNW 8 | NNW 8 | NNW 8 | NNW 7 | WNW 3 | — | SW 3 | S 4 | S 6 | SW 8 | SW 9 | SW 10 | WSW 9 | WSW 10 | — | — | — | — | — | — | — |
| kJ | 379 | 344 | 238 | 148 | 7 | — | 5 | 22 | 125 | 503 | 1420 | 1509 | 845 | 1042 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 298 | 484 | 263 | 85 | 440 | 0 | 80 | 435 | 167 | 442 | 451 | 472 | 104 | 520 | 79 | 78 | 525 | 4 | 4 | 465 | 440 |
Best forecast wave conditions in Lisboa | |||||||||||||||||||||
Best forecast wave conditions in Portugal | |||||||||||||||||||||
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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 16 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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