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Furnas surfForecast / Ericeira / Portugal
12 Day Weather and Surf, issued 11 pm Wednesday 17 Dec 2025 WETForecast update in hr min s Forecast update imminent
Furnas surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Furnas sea temperature is
16.1° C
(Which is normal for this time of year)Best Forecast Surf Conditions for Furnas this week:
The surf forecast for Furnas over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Dec 18) at 9AM. The primary swell is predicted to be 4.5m and 22s period. The wind is predicted to be cross-shore as the swell arrives.
The most powerful waves expected at Furnas in the next 12 days are 5.5m 19s and forecast to arrive on Thursday (Dec 18) at 3PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 5s period and expected on Friday (Dec 19) at 3AM.
| Wave Type | Time (WET) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Thu 18th Dec) | 15ft (4.5m) 22s |
| Best Surf | 9AM (Thu 18th Dec) | 15ft (4.5m) 22s |
| Most Powerful | 3PM (Thu 18th Dec) | 18ft (5.5m) 19s |
Table - best surf conditions forecast for Furnas over the next 12 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Heavy rain (total 33mm), heaviest during Thu night. Very mild (max 15°C on Thu morning, min 13°C on Wed night). Winds increasing (calm on Wed night, fresh winds from the NW by Sat afternoon). | Days 3-6 Weather Summary Heavy rain (total 41mm), heaviest during Tue afternoon. Very mild (max 15°C on Mon afternoon, min 11°C on Sat night). Winds increasing (calm on Mon night, near gales from the SSE by Tue afternoon). | |||||||||||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wed 24 | ||||||||||||||||
| Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | ||
Rating (10 max) | ||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||
| Period(s) (?) | 12 | 22 | 19 | 17 | 16 | 16 | 17 | 16 | 14 | 14 | 15 | 15 | 16 | 16 | 15 | 14 | 13 | 12 | 11 | 9 | 9 | |
Wave (?)Graph  | ||||||||||||||||||||||
 kJ (?) | 1839 | 19184 | 20604 | 16533 | 13159 | 12615 | 13092 | 7184 | 4189 | 7994 | 10913 | 9183 | 15759 | 19434 | 13814 | 7312 | 3563 | 1427 | 688 | 923 | 994 | |
Wind (km/h) | ||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross | cross | on | cross | cross | cross | on | on | cross- on | on | on | cross- on | cross- on | cross- on | cross- on | cross | cross | on | cross- on | cross- on | |
High Tide / height (m) | 1:14AM 2.52 | 1:35PM 2.42 | 1:51AM 2.61 | 2:12PM 2.47 | 2:27AM 2.67 | 2:48PM 2.50 | 3:03AM 2.71 | 3:23PM 2.49 | 3:38AM 2.73 | 3:59PM 2.46 | 4:14AM 2.71 | 4:35PM 2.42 | 4:51AM 2.67 | 5:14PM 2.36 | ||||||||
Low Tide / height (m) | 7:26AM 0.54 | 7:35PM 0.55 | 8:03AM 0.46 | 8:11PM 0.50 | 8:39AM 0.41 | 8:46PM 0.46 | 9:15AM 0.39 | 9:20PM 0.45 | 9:51AM 0.40 | 9:55PM 0.46 | 10:28AM 0.43 | 10:31PM 0.50 | 11:06AM 0.47 | |||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wed 24 | ||||||||||||||||
| Sunrise | - | 7:50 | - | - | 7:50 | - | - | 7:50 | - | - | 7:52 | - | - | 7:52 | - | - | 7:52 | - | - | 7:52 | - | |
| Sunset | - | - | 5:16 | - | - | 5:16 | - | - | 5:17 | - | - | 5:17 | - | - | 5:19 | - | - | 5:19 | - | - | 5:20 | |
 |  |  |  | |  |  | |  |  | |  |  | | |  | |  | |  | | ||
Rain (mm) | - | - | - | 30 | - | - | - | - | 3 | 1 | 1 | 9 | 6 | 3 | - | - | 4 | 17 | 13 | 4 | 3 | |
| Temp. °C | 14 | 15 | 15 | 15 | 13 | 14 | 13 | 14 | 15 | 13 | 12 | 13 | 14 | 14 | 15 | 14 | 14 | 14 | 15 | 13 | 13 | |
| Feels °C (?) | 14 | 10 | 9 | 10 | 6 | 6 | 6 | 11 | 9 | 5 | 6 | 3 | 4 | 5 | 6 | 9 | 8 | 6 | 9 | 2 | 2 | |
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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 Furnas 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.
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Information about the Furnas Surf forecast
The above surf forecast table for Furnas provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Furnas can be found by selecting the local surf guide option on the grey menu. Our Furnas 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 (Furnas) 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 Furnas 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.
Furnas is 12 km (7 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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