Surf Forecasts:
Sao Juliao surf forecast from 19 Jun 2026:
- Best quality surf: Tuesday 23 Jun, 4AM (local time) - 3ft (0.9m), 10s period, W swell with cross-offshore winds.
- Most powerful swell: Saturday 20 Jun, 7AM (local time) - 3.5ft (1.1m), 8s period, NW swell with 154 kJ wave energy.
- Next surfable swell (1★+): Tuesday 23 Jun, 4AM (local time) - 3ft (0.9m), 10s period with W 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 Tuesday (Jun 23) at 4AM. The primary swell is predicted to be 0.9m and 10s period with a secondary swell of 0.8m and 5s. 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 1.1m 8s and forecast to arrive on Saturday (Jun 20) at 7AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Tue 23rd Jun) | 3ft (0.9m) 10s |
| Best Surf | 4AM (Tue 23rd Jun) | 3ft (0.9m) 10s |
| Most Powerful | 7AM (Sat 20th Jun) | 3.5ft (1.1m) 8s |
Table - best surf conditions forecast for Sao Juliao over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 22°C on Sun morning, min 17°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Tue morning, min 18°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | |||||||||||||||
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 9 | WNW 9 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 7 | W 7 | NNW 10 | W 7 | WNW 11 | W 10 | W 9 | W 9 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | WNW 9 | WNW 9 | WNW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 127 | 121 | 108 | 116 | 87 | 66 | 55 | 37 | 38 | 39 | 40 | 154 | 103 | 76 | 66 | 70 | 72 | 61 | 32 | 45 | 75 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross | glassy | cross-on | cross-off | cross | cross-on | on | cross | cross | on |
High Tide | 7:03PM2.90m | 7:38AM2.45m | 7:57PM2.72m | 8:36AM2.32m | 8:55PM2.54m | 9:36AM2.24m | 9:56PM2.38m | 10:38AM2.21m | 11:00PM2.28m | 11:38AM2.24m | 00:01AM2.24m | 12:33PM2.30m | 00:56AM2.25m | ||||||||
Low Tide | 12:40PM0.41m | 1:27AM0.32m | 1:34PM0.55m | 2:23AM0.48m | 2:32PM0.70m | 3:21AM0.62m | 3:36PM0.81m | 4:21AM0.73m | 4:44PM0.87m | 5:20AM0.78m | 5:49PM0.86m | 6:14AM0.79m | 6:47PM0.81m | ||||||||
 | |  | |  |  | | | | | | | | | | | | | | | | |
 | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — |
 | — | — | 9:05 | — | — | 9:06 | — | — | 9:06 | — | — | 9:06 | — | — | 9:06 | — | — | 9:06 | — | — | 9:07 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 20 | 18 | 21 | 21 | 19 | 22 | 21 | 19 | 21 | 22 | 22 | 27 | 25 | 26 | 25 | 23 | 19 | 21 | 21 | 19 |
Feels °C | 17 | 17 | 15 | 18 | 18 | 16 | 21 | 19 | 19 | 19 | 21 | 22 | 28 | 25 | 25 | 25 | 22 | 20 | 20 | 20 | 19 |
Swell 1 Height (m) Direction Period (s) | WNW 9 | WNW 9 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 7 | W 7 | NNW 10 | W 7 | W 7 | W 10 | W 9 | NNW 6 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | WSW 5 | WNW 9 | WNW 8 |
| kJ | 127 | 121 | 108 | 116 | 87 | 66 | 55 | 37 | 38 | 39 | 37 | 154 | 103 | 59 | 66 | 70 | 72 | 61 | 22 | 45 | 75 |
Swell 2 Height (m) Direction Period (s) | N 7 | — | — | N 12 | NW 12 | — | NNW 9 | NNW 9 | W 7 | NNW 9 | NNW 8 | NNW 8 | NNW 6 | W 9 | W 8 | W 8 | WNW 8 | W 8 | N 7 | NNW 7 | WSW 7 |
| kJ | 1 | — | — | 3 | 6 | — | 8 | 8 | 24 | 31 | 28 | 13 | 36 | 76 | 35 | 33 | 22 | 20 | 24 | 16 | 43 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | W 9 | NNW 7 | W 8 | W 11 | WNW 11 | — | NNW 8 | — | WSW 7 | WSW 6 | W 11 | WNW 10 | WNW 9 | W 13 | WNW 11 |
| kJ | — | — | — | — | — | — | 2 | 5 | 6 | 10 | 40 | — | 13 | — | 9 | 4 | 2 | 20 | 32 | 12 | 25 |
Wind waves Height (m) Direction Period (s) | NNW 4 | N 3 | NNW 4 | N 4 | NNW 4 | NNW 4 | NNW 4 | NNW 5 | NNW 5 | NNW 5 | NNW 4 | NNW 5 | — | — | — | — | W 3 | — | — | WSW 5 | — |
| kJ | 2 | 5 | 11 | 6 | 10 | 17 | 11 | 13 | 17 | 12 | 11 | 33 | — | — | — | — | 4 | — | — | 14 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 26 | 26 | 26 | 26 | 215 | 27 | 27 | 215 | 29 | 27 | 30 | 0 | 0 | 145 | 0 | 0 | 137 | 6 | 48 | 411 | 26 |
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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