Surf Forecasts:
Costa Nova surf forecast from 17 Sep 2026:
- Best quality surf: Friday 18 Sep, 7PM (local time) - 10ft (3.0m), 15s period, NW swell with cross-shore winds.
- Most powerful swell: Friday 18 Sep, 7PM (local time) - 10ft (3.0m), 15s period, NW swell with 3,275 kJ wave energy.
- Next surfable swell (1★+): Thursday 17 Sep, 4AM (local time) - 8ft (2.5m), 9s period with NW swell.
Best Forecast Surf Conditions for Costa Nova this week:
The surf forecast for Costa Nova over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 17) at 4AM. The primary swell is predicted to be 2.5m and 9s period with a secondary swell of 0.1m and 12s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Costa Nova in the next 16 days are 3.0m 15s and forecast to arrive on Friday (Sep 18) at 7PM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Thu 17th Sep) | 8ft (2.5m) 9s |
| Best Surf | 7PM (Fri 18th Sep) | 10ft (3.0m) 15s |
| Most Powerful | 7PM (Fri 18th Sep) | 10ft (3.0m) 15s |
Table - best surf conditions forecast for Costa Nova over the next 16 days.
Short Range ForecastMostly dry. Warm (max 27°C on Sat morning, min 17°C on Thu night). Winds decreasing (strong winds from the N on Thu afternoon, calm by Sat morning). | Days 4-6 Weather SummaryMostly dry. Warm (max 32°C on Sun morning, min 21°C on Tue afternoon). Wind will be generally light. | ||||||||||||||||||||
Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | |||||||||||||||
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) | NW 10 | NNW 10 | NNW 8 | NW 9 | NW 13 | NW 14 | NW 13 | NW 13 | NW 12 | NW 11 | NW 11 | NW 10 | NW 12 | NW 12 | NW 11 | NW 12 | NW 11 | WNW 16 | WNW 15 | WNW 13 | WNW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 862 | 932 | 949 | 493 | 1756 | 2968 | 1682 | 1204 | 961 | 808 | 568 | 261 | 656 | 614 | 501 | 442 | 326 | 306 | 706 | 711 | 587 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross | cross | cross | glassy | cross-on | cross-off | off | cross | cross-off | off | cross-on | glassy | glassy | cross | cross | glassy | cross-on | glassy |
High Tide | 7:21AM2.69m | 7:43PM2.52m | 8:06AM2.52m | 8:46PM2.33m | 9:34AM2.38m | 10:52PM2.25m | 11:33AM2.38m | 00:26AM2.34m | 12:49PM2.51m | 1:24AM2.50m | 1:39PM2.69m | 2:06AM2.68m | 2:18PM2.87m | 2:41AM2.85m | |||||||
Low Tide | 1:29PM1.29m | 1:46AM1.40m | 2:21PM1.47m | 2:42AM1.57m | 3:32PM1.61m | 4:01AM1.68m | 5:09PM1.63m | 5:39AM1.65m | 6:36PM1.51m | 6:54AM1.50m | 7:30PM1.33m | 7:42AM1.30m | 8:10PM1.13m | ||||||||
 | |  | | | | | | | | | | | | | | | | | | | |
 | 7:16 | — | — | 7:16 | — | — | 7:18 | — | — | 7:18 | — | — | 7:20 | — | — | 7:20 | — | — | 7:22 | — | — |
 | — | 7:40 | — | — | 7:39 | — | — | 7:37 | — | — | 7:36 | — | — | 7:34 | — | — | 7:32 | — | — | 7:30 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 19 | 18 | 19 | 20 | 23 | 27 | 26 | 28 | 32 | 32 | 30 | 32 | 29 | 29 | 29 | 27 | 20 | 26 | 24 | 22 |
Feels °C | 17 | 13 | 13 | 15 | 17 | 21 | 24 | 21 | 26 | 29 | 27 | 26 | 28 | 24 | 25 | 25 | 21 | 17 | 24 | 22 | 21 |
Swell 1 Height (m) Direction Period (s) | NW 10 | SW 12 | S 12 | NW 9 | NW 16 | NW 14 | NW 13 | NW 13 | NW 12 | NW 11 | NW 11 | NW 10 | NW 12 | NW 12 | NW 11 | NW 12 | NW 11 | NW 11 | WNW 15 | WNW 13 | WNW 13 |
| kJ | 862 | 6 | 3 | 493 | 560 | 2968 | 1682 | 1204 | 961 | 808 | 568 | 261 | 656 | 614 | 501 | 442 | 326 | 171 | 706 | 711 | 587 |
Swell 2 Height (m) Direction Period (s) | S 12 | — | — | NW 14 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | NNW 5 | S 12 | — | S 12 | NNW 4 | NW 20 | WNW 16 | NW 7 | NNW 8 | NNW 7 |
| kJ | 3 | — | — | 238 | 9 | 8 | 8 | 7 | 7 | 7 | 7 | 25 | 3 | — | 3 | 3 | 15 | 306 | 106 | 120 | 84 |
Swell 3 Height (m) Direction Period (s) | — | — | — | W 16 | — | — | — | — | — | — | — | NW 13 | — | — | — | — | — | — | WNW 11 | — | — |
| kJ | — | — | — | 5 | — | — | — | — | — | — | — | 136 | — | — | — | — | — | — | 47 | — | — |
Wind waves Height (m) Direction Period (s) | — | NNW 10 | NNW 8 | — | NW 13 | — | — | — | — | — | NW 11 | — | — | NW 2 | — | — | NNW 4 | NNW 5 | — | — | — |
| kJ | — | 932 | 949 | — | 1756 | — | — | — | — | — | 382 | — | — | 1 | — | — | 11 | 78 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 298 | 32 | 218 | 301 | 20 | 218 | 0 | 0 | 132 | 0 | 0 | 118 | 0 | 0 | 218 | 0 | 0 | 152 | 100 | 52 | 218 |
Best forecast wave conditions in Beira | |||||||||||||||||||||
Best forecast wave conditions in Portugal | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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 Costa Nova 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 Costa Nova Surf forecast
The above surf forecast table for Costa Nova provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Costa Nova can be found by selecting the local surf guide option on the grey menu. Our Costa Nova 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 (Costa Nova) 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 Costa Nova 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.
Costa Nova is 8 km (5 miles) from the city of Ilhavo. If you plan a holiday in Beira, look for hotels and other accommodation in Ilhavo. Ilhavo has rooms for a wide range of budgets as well as car hire and transport links.
Nearest