Surf Forecasts:
Sao Joao surf forecast from 9 Jun 2026:
- Best quality surf: Tuesday 9 Jun, 1PM (local time) - 10ft (3.0m), 8s period, NNW swell with cross-shore winds.
- Most powerful swell: Wednesday 10 Jun, 4AM (local time) - 10ft (3.0m), 9s period, NNW swell with 1,465 kJ wave energy.
- Next surfable swell (1★+): Tuesday 9 Jun, 1PM (local time) - 10ft (3.0m), 8s period with NNW swell.
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 Tuesday (Jun 09) at 1PM. The primary swell is predicted to be 3.0m and 8s period with a secondary swell of 0.1m and 12s. The wind is predicted to be cross-shore as the swell arrives.
The most powerful waves expected at Sao Joao in the next 16 days are 3.0m 9s and forecast to arrive on Wednesday (Jun 10) at 4AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 5s period and expected on Sunday (Jun 14) at 1AM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Tue 9th Jun) | 10ft (3.0m) 8s |
| Best Surf | 1PM (Tue 9th Jun) | 10ft (3.0m) 8s |
| Most Powerful | 4AM (Wed 10th Jun) | 10ft (3.0m) 9s |
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. Warm (max 31°C on Thu afternoon, min 14°C on Mon night). Winds decreasing (fresh winds from the NNW on Tue afternoon, calm by Thu morning). | Days 4-6 Weather SummarySome drizzle, heaviest during Sun morning. Warm (max 29°C on Sat morning, min 18°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 9 | Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||
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) | NNW 8 | NNW 8 | NNW 8 | NNW 9 | NNW 9 | NNW 9 | NNW 9 | NNW 9 | NNW 8 | NNW 8 | NNW 8 | NW 8 | WNW 12 | WNW 12 | WNW 11 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 969 | 1184 | 1287 | 1356 | 1093 | 1044 | 700 | 475 | 368 | 261 | 181 | 69 | 233 | 449 | 366 | 275 | 232 | 143 | 98 | 86 | 90 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross-off | on | cross | cross | cross-on | glassy | cross-off | on | glassy | cross-off | on | cross-off | on | on | cross-on |
High Tide | 9:57AM2.12m | 10:15PM2.31m | 11:00AM2.23m | 11:19PM2.40m | 11:59AM2.39m | 00:20AM2.51m | 12:54PM2.57m | 1:18AM2.63m | 1:47PM2.74m | 2:13AM2.74m | 2:37PM2.89m | 3:07AM2.80m | 3:28PM3.00m | 3:59AM2.80m | |||||||
Low Tide | 3:56PM0.82m | 4:40AM0.61m | 5:03PM0.73m | 5:40AM0.51m | 6:06PM0.57m | 6:36AM0.39m | 7:04PM0.39m | 7:29AM0.28m | 7:59PM0.21m | 8:21AM0.19m | 8:52PM0.07m | 9:11AM0.15m | 9:45PM-0.01m | ||||||||
 | |  | | | | | | | | | | | | |  | |  |  | | | |
 | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — |
 | — | — | 9:00 | — | — | 9:00 | — | — | 9:00 | — | — | 9:00 | — | — | 9:01 | — | — | 9:01 | — | — | 9:02 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 2 | — | — | — |
Temp °C | 21 | 20 | 15 | 25 | 24 | 19 | 29 | 31 | 24 | 25 | 28 | 22 | 29 | 27 | 23 | 27 | 26 | 22 | 24 | 23 | 19 |
Feels °C | 15 | 12 | 9 | 21 | 19 | 15 | 28 | 28 | 21 | 24 | 25 | 22 | 29 | 24 | 22 | 27 | 25 | 22 | 23 | 21 | 18 |
Swell 1 Height (m) Direction Period (s) | S 12 | S 12 | — | NW 9 | S 19 | — | NNW 9 | NNW 9 | NNW 8 | NNW 8 | NNW 8 | NW 8 | WNW 12 | WNW 12 | WNW 11 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 |
| kJ | 3 | 3 | — | 538 | 7 | — | 700 | 475 | 368 | 261 | 181 | 69 | 233 | 449 | 366 | 275 | 232 | 143 | 98 | 86 | 90 |
Swell 2 Height (m) Direction Period (s) | S 12 | — | — | — | — | — | S 17 | W 8 | S 17 | S 11 | WNW 9 | N 7 | NW 8 | S 4 | SSE 5 | N 8 | SW 13 | SW 12 | NW 9 | NW 9 | NW 9 |
| kJ | 3 | — | — | — | — | — | 5 | 12 | 6 | 2 | 42 | 26 | 74 | 2 | 8 | 6 | 7 | 6 | 41 | 29 | 19 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | S 16 | S 17 | S 9 | S 15 | S 11 | WNW 8 | WNW 8 | SW 13 | NNW 9 | SW 13 | N 8 | N 8 | SW 12 | SW 12 | NW 11 |
| kJ | — | — | — | — | — | — | 5 | 6 | 2 | 4 | 9 | 24 | 21 | 7 | 8 | 7 | 1 | 1 | 6 | 6 | 19 |
Wind waves Height (m) Direction Period (s) | NNW 8 | NNW 8 | NNW 8 | NNW 9 | NNW 9 | NNW 9 | — | — | NNW 8 | SSE 3 | WNW 3 | — | — | NNW 9 | — | S 4 | — | N 4 | — | S 3 | NNW 3 |
| kJ | 969 | 1184 | 1287 | 1356 | 1093 | 1044 | — | — | 176 | 1 | 1 | — | — | 50 | — | 3 | — | 1 | — | 1 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 181 | 384 | 370 | 198 | 379 | 5 | 0 | 161 | 4 | 20 | 133 | 0 | 0 | 104 | 0 | 0 | 104 | 0 | 5 | 181 | 74 |
Best forecast wave conditions in Lisboa | |||||||||||||||||||||
Best forecast wave conditions in Portugal | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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