Surf Forecasts:
Costa Nova surf forecast from 29 Aug 2026:
- Best quality surf: Saturday 5 Sep, 7AM (local time) - 6.5ft (2.0m), 9s period, NNW swell with cross-offshore winds.
- Most powerful swell: Saturday 5 Sep, 10AM (local time) - 7ft (2.2m), 12s period, NW swell with 1,392 kJ wave energy.
- Next surfable swell (1★+): Sunday 30 Aug, 1AM (local time) - 4.5ft (1.4m), 8s 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 Sunday (Aug 30) at 1AM. The primary swell is predicted to be 1.4m and 8s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Costa Nova in the next 16 days are 2.2m 12s and forecast to arrive on Saturday (Sep 05) at 10AM. 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+) | 1AM (Sun 30th Aug) | 4.5ft (1.4m) 8s |
| Best Surf | 7AM (Sat 5th Sep) | 6.5ft (2.0m) 9s |
| Most Powerful | 10AM (Sat 5th Sep) | 7ft (2.2m) 12s |
Table - best surf conditions forecast for Costa Nova over the next 16 days.
The Lowdown
### Imperial
Alright, folks, Rusty here. Gotta be patient for Costa Nova, but there’s some hope if you play the waiting game.
So, for the first week, it’s a bit of a mixed bag. The early mornings are your best bet, like Saturday the 29th with a 5ft NW swell and glassy, clean conditions. That’s a sweet little window. But the afternoons always get chopped up by the wind. That same story plays out for a few days: clean dawn patrols, blown-out afternoons.
The one to really get excited about is Friday the 4th of September. The morning is looking like a gem. We’ve got a 4ft NW swell, but the period is a long 13 seconds, so you’re getting some proper groundswell with heaps of energy. The combined energy is strong at 654, and with glassy conditions, it’s going to be clean as a whistle. The swell direction is perfect for the break, so expect some nice, lined-up waves. It’s a bit big for the beginners, but the intermediate crew will have a field day.
Make a note for Sunday the 13th of September. The morning forecast shows a 4ft NW swell, a very long 13-second period, and glassy conditions. The combined energy is very strong at 751, so there’s a lot of power in the water. It’s a long way off, so it’s a promise, not a guarantee, but it’s got the makings of a classic.
The water temperature is about 66°, which is normal for this time of year.
This beach/jetty spot can get a bit crowded when the waves are good, so be prepared for a few folks out.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Sat afternoon, min 15°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 22°C on Thu morning, min 16°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Sat 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | ||||||||||||||
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 8 | NW 8 | NW 9 | NW 9 | NW 9 | NW 10 | NW 10 | NW 9 | NW 9 | NW 9 | NNW 8 | NW 8 | NNW 7 | NNW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NNW 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 233 | 238 | 321 | 321 | 231 | 408 | 701 | 314 | 503 | 550 | 515 | 229 | 178 | 237 | 188 | 178 | 303 | 261 | 340 | 608 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross | glassy | cross-on | glassy | glassy | cross-on | cross |
High Tide | 4:57PM3.26m | 5:14AM3.11m | 5:28PM3.26m | 5:45AM3.09m | 6:00PM3.20m | 6:18AM3.02m | 6:35PM3.08m | 6:55AM2.91m | 7:16PM2.91m | 7:39AM2.77m | 8:09PM2.71m | 8:42AM2.62m | 9:33PM2.52m | |||||||
Low Tide | 10:57PM0.73m | 11:07AM0.75m | 11:31PM0.73m | 11:43AM0.78m | 00:08AM0.79m | 12:21PM0.86m | 00:47AM0.91m | 1:04PM0.99m | 1:31AM1.08m | 1:55PM1.15m | 2:24AM1.27m | 2:59PM1.32m | 3:34AM1.43m | |||||||
 |  | | |  | |  | | | | | | | | | | | | | | |
 | — | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — | 7:01 | — | — | 7:03 | — | — | 7:03 | — | — |
 | 8:12 | — | — | 8:10 | — | — | 8:08 | — | — | 8:07 | — | — | 8:06 | — | — | 8:04 | — | — | 8:02 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 20 | 20 | 19 | 17 | 18 | 18 | 17 | 17 | 17 | 17 | 20 | 20 | 20 | 22 | 20 | 19 | 22 | 22 | 23 |
Feels °C | 19 | 22 | 20 | 17 | 15 | 15 | 14 | 14 | 14 | 14 | 15 | 18 | 17 | 19 | 21 | 18 | 19 | 21 | 22 | 23 |
Swell 1 Height (m) Direction Period (s) | NW 8 | NW 8 | NW 9 | NW 9 | NW 9 | NW 10 | SW 18 | NW 9 | SW 16 | SW 15 | SW 15 | NW 8 | SW 16 | NNW 7 | NW 7 | SW 14 | SW 14 | NW 7 | NW 12 | NNW 8 |
| kJ | 233 | 238 | 321 | 321 | 231 | 408 | 12 | 314 | 10 | 9 | 8 | 229 | 9 | 237 | 188 | 8 | 8 | 261 | 146 | 608 |
Swell 2 Height (m) Direction Period (s) | — | — | W 13 | — | W 12 | W 11 | SW 17 | SW 16 | W 16 | — | W 15 | SW 15 | — | SW 16 | SW 14 | — | W 14 | NW 11 | WNW 10 | NW 14 |
| kJ | — | — | 3 | — | 3 | 9 | 12 | 10 | 5 | — | 4 | 9 | — | 10 | 8 | — | 4 | 90 | 59 | 549 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 13 | NW 18 | NW 10 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 7 | 49 | 260 |
Wind waves Height (m) Direction Period (s) | — | — | — | NNW 3 | NNW 4 | NNW 4 | NW 10 | NNW 6 | NW 9 | NW 9 | NNW 8 | — | NNW 7 | — | — | NW 7 | NW 7 | — | NW 7 | — |
| kJ | — | — | — | 4 | 15 | 18 | 701 | 154 | 503 | 550 | 515 | — | 178 | — | — | 178 | 303 | — | 340 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 233 | 0 | 52 | 218 | 76 | 76 | 218 | 76 | 114 | 268 | 32 | 52 | 218 | 2 | 0 | 248 | 0 | 0 | 218 | 5 |
Best forecast wave conditions in Beira | ||||||||||||||||||||
Best forecast wave conditions in Portugal | ||||||||||||||||||||
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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.
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