Surf Forecasts:
Sao Juliao surf forecast from 4 Nov 2026:
- Best quality surf: Sunday 8 Nov, 9AM (local time) - 8ft (2.5m), 8s period, SSW swell with cross-offshore winds.
- Most powerful swell: Wednesday 18 Nov, 12PM (local time) - 15ft (4.5m), 15s period, WNW swell with 8,752 kJ wave energy.
- Next surfable swell (1★+): Friday 6 Nov, 12AM (local time) - 3.5ft (1.0m), 12s period with NW swell.
Best Forecast Surf Conditions for Sao Juliao this week:
The surf forecast for Sao Juliao over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Nov 06) at 12AM. The primary swell is predicted to be 1.0m and 12s period with a secondary swell of 0.4m and 6s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Sao Juliao in the next 16 days are 4.5m 15s and forecast to arrive on Wednesday (Nov 18) at 12PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Sunday (Nov 08) at 3AM.
| Wave Type | Time (WET) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Fri 6th Nov) | 3.5ft (1.0m) 12s |
| Best Surf | 9AM (Sun 8th Nov) | 8ft (2.5m) 8s |
| Most Powerful | 12PM (Wed 18th Nov) | 15ft (4.5m) 15s |
Table - best surf conditions forecast for Sao Juliao over the next 16 days.
Short Range ForecastSome drizzle, heaviest during Fri night. Very mild (max 17°C on Wed afternoon, min 13°C on Wed morning). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 57mm), heaviest during Sun night. Very mild (max 19°C on Sat morning, min 16°C on Sat morning). Winds increasing (light winds from the S on Sat afternoon, strong winds from the SSW by Mon morning). | ||||||||||||||||||||
Wednesday 4 | Thursday 5 | Friday 6 | Saturday 7 | Sunday 8 | Monday 9 | Tuesday 10 | |||||||||||||||
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 13 | NNW 9 | NW 15 | WNW 13 | NW 12 | NW 12 | NW 12 | NW 11 | NW 11 | SW 7 | SW 6 | SSW 6 | SSW 8 | SSW 8 | SSW 8 | SW 9 | SW 10 | WSW 12 | WSW 12 | WSW 11 | SW 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 189 | 132 | 106 | 357 | 358 | 282 | 195 | 121 | 72 | 44 | 52 | 99 | 898 | 694 | 1505 | 2027 | 4114 | 6153 | 6155 | 4104 | 1539 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross | cross-on | on | cross-off | off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross | cross |
High Tide | 10:51AM2.56m | 11:32PM2.42m | 11:46AM2.66m | 00:19AM2.57m | 12:32PM2.74m | 00:58AM2.70m | 1:13PM2.78m | 1:34AM2.79m | 1:50PM2.78m | 2:08AM2.84m | 2:26PM2.75m | 2:41AM2.85m | 3:01PM2.69m | ||||||||
Low Tide | 5:20PM0.48m | 5:35AM0.61m | 6:08PM0.38m | 6:23AM0.47m | 6:48PM0.30m | 7:04AM0.36m | 7:23PM0.26m | 7:41AM0.29m | 7:56PM0.26m | 8:16AM0.26m | 8:28PM0.30m | 8:51AM0.27m | 9:00PM0.36m | ||||||||
 | |  | | |  |  | |  | |  |  |  | | |  | |  |  |  | | |
 | 7:07 | — | — | 7:07 | — | — | 7:09 | — | — | 7:09 | — | — | 7:11 | — | — | 7:13 | — | — | 7:13 | — | — |
 | — | 5:34 | — | — | 5:32 | — | — | 5:31 | — | — | 5:30 | — | — | 5:30 | — | — | 5:29 | — | — | 5:28 | — |
mm | — | — | — | — | — | — | — | — | 1 | — | — | 2 | 2 | 4 | 30 | 7 | 4 | 8 | 8 | 7 | 13 |
Temp °C | 16 | 17 | 14 | 17 | 17 | 15 | 16 | 17 | 17 | 19 | 19 | 18 | 19 | 19 | 19 | 18 | 18 | 19 | 19 | 18 | 19 |
Feels °C | 13 | 12 | 10 | 14 | 14 | 13 | 13 | 14 | 14 | 15 | 16 | 16 | 12 | 13 | 13 | 10 | 11 | 13 | 13 | 12 | 15 |
Swell 1 Height (m) Direction Period (s) | NNW 9 | NNW 9 | NNW 7 | WNW 13 | NW 12 | NW 12 | NW 12 | NW 11 | WSW 7 | SW 7 | NW 10 | NW 11 | WNW 12 | WNW 11 | WNW 10 | WNW 10 | — | WSW 12 | — | — | SW 10 |
| kJ | 189 | 132 | 71 | 357 | 358 | 282 | 195 | 121 | 40 | 44 | 25 | 45 | 175 | 143 | 94 | 39 | — | 6153 | — | — | 1539 |
Swell 2 Height (m) Direction Period (s) | WNW 13 | W 12 | WNW 12 | N 6 | NNW 6 | NNW 6 | N 6 | NNW 6 | NW 11 | NW 10 | NW 12 | WNW 14 | WNW 12 | — | W 13 | W 16 | — | — | — | — | WNW 11 |
| kJ | 181 | 106 | 106 | 20 | 21 | 12 | 6 | 6 | 72 | 25 | 23 | 19 | 123 | — | 14 | 19 | — | — | — | — | 634 |
Swell 3 Height (m) Direction Period (s) | SW 6 | WNW 16 | NW 15 | N 9 | S 12 | N 9 | SW 12 | SW 11 | N 6 | WNW 12 | N 6 | N 6 | — | — | — | — | — | — | — | — | — |
| kJ | 1 | 25 | 106 | 2 | 3 | 6 | 5 | 5 | 2 | 15 | 1 | 1 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | SSE 3 | — | SE 2 | SW 6 | SSW 6 | SSW 8 | SSW 8 | SSW 8 | SW 9 | SW 10 | — | WSW 12 | WSW 11 | — |
| kJ | — | — | — | — | — | — | — | 1 | — | 1 | 52 | 99 | 898 | 694 | 1505 | 2027 | 4114 | — | 6155 | 4104 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 26 | 5 | 20 | 48 | 0 | 0 | 0 | 0 | 0 | 57 | 0 | 333 | 493 | 412 | 490 | 489 | 489 | 489 | 421 | 50 |
Best forecast wave conditions in Ericeira | |||||||||||||||||||||
Best forecast wave conditions in Portugal | |||||||||||||||||||||
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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 Juliao 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 Juliao Surf forecast
The above surf forecast table for Sao Juliao provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Sao Juliao can be found by selecting the local surf guide option on the grey menu. Our Sao Juliao 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 Juliao) 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 Juliao 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 Juliao is 15 km (9 miles) from the city of Sintra. If you plan a holiday in Ericeira, look for hotels and other accommodation in Sintra. Sintra has rooms for a wide range of budgets as well as car hire and transport links.
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