Surf Forecasts:
Costa Nova surf forecast from 28 Jul 2026:
- Best quality surf: Saturday 1 Aug, 4AM (local time) - 4ft (1.2m), 6s period, NW swell with glassy winds.
- Most powerful swell: Monday 3 Aug, 4PM (local time) - 3.5ft (1.1m), 9s period, W swell with 207 kJ wave energy.
- Next surfable swell (1★+): Friday 31 Jul, 4AM (local time) - 2.5ft (0.7m), 6s 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 Friday (Jul 31) at 4AM. The primary swell is predicted to be 0.7m and 6s period with a secondary swell of 0.4m and 9s. 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 1.1m 9s and forecast to arrive on Monday (Aug 03) at 4PM. 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 (Fri 31st Jul) | 2.5ft (0.7m) 6s |
| Best Surf | 4AM (Sat 1st Aug) | 4ft (1.2m) 6s |
| Most Powerful | 4PM (Mon 3rd Aug) | 3.5ft (1.1m) 9s |
Table - best surf conditions forecast for Costa Nova over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a look at what’s cookin’ for Costa Nova over the next couple of weeks.
Right off the bat, I gotta be straight with you – the start of this forecast is a real bummer. We’ve got a solid stretch of nothing worth paddling out for. From Tuesday the 28th of July all the way through to the morning of Wednesday the 5th of August, it’s dead. The swell is tiny, the wind is mostly a messy cross-onshore, and the wave energy is weak. The combined energy barely cracks 275 on the 28th morning, and then it just drops into the double digits for days. It’s a long, flat run.
Now, there’s a little flicker of hope on the morning of Wednesday the 5th of August. The swell picks up a touch to 3 ft from the WNW with a period of 10 seconds, and the combined energy jumps to 207. The wind is light and cross-on, so it’s not clean, but it’s better than the slop we’ve been looking at. Still, it’s a marginal day at best.
The real standout, the one that’s got me a little excited, is the morning of Tuesday the 11th of August. That’s a week and a half away, so don’t book the day off just yet, but the models are showing a solid 8 ft swell from the NNW with a long period of 11 seconds. The combined energy is a massive 1536 – that’s proper power. The wind is light and cross-shore, so it’ll be a bit lined up, but with that size and period, it’s going to be a beast. Costa Nova (Portugal) is a beach and jetty setup, so that long-period groundswell might make it a bit straight and fast, but for the experienced crew, that’s a session to mark on the calendar. This is definitely for experts only, though – that’s well over 8 ft.
The water is sitting at 69°, which is a touch warmer than normal for this time of year, so you won’t need a thick wetsuit.
Overall, it’s a long wait for the good stuff. The first week is a write-off, and the second week brings a fleeting window of proper size. Keep your eyes on that Tuesday the 11th.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Tue morning, min 17°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Fri morning, min 17°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | |||||||||||||||
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) | NNW 10 | NW 10 | NW 9 | NW 9 | NW 8 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | NW 7 | NW 7 | NW 6 | NW 6 | W 9 | W 9 | W 8 | WNW 10 | W 9 | WNW 9 | W 9 | W 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 261 | 235 | 162 | 75 | 82 | 56 | 52 | 34 | 25 | 77 | 63 | 64 | 80 | 78 | 55 | 68 | 31 | 79 | 141 | 207 | 181 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross | cross | cross-on | cross | cross-on | cross-on | cross | on | cross-on | cross-on | on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross |
High Tide | 3:47PM2.97m | 4:07AM2.86m | 4:21PM3.06m | 4:40AM2.93m | 4:53PM3.12m | 5:12AM2.96m | 5:25PM3.14m | 5:43AM2.97m | 5:56PM3.14m | 6:14AM2.94m | 6:28PM3.10m | 6:48AM2.89m | 7:03PM3.02m | ||||||||
Low Tide | 9:39PM1.07m | 9:47AM1.05m | 10:14PM0.97m | 10:23AM0.96m | 10:49PM0.90m | 10:58AM0.91m | 11:24PM0.86m | 11:33AM0.89m | 11:59PM0.85m | 12:09PM0.91m | 00:37AM0.89m | 12:48PM0.97m | 1:17AM0.97m | ||||||||
 | |  | |  | | | | | | | | | |  | | | | | | | |
 | 6:26 | — | — | 6:28 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — | 6:33 | — | — |
 | — | 8:53 | — | — | 8:53 | — | — | 8:52 | — | — | 8:51 | — | — | 8:50 | — | — | 8:49 | — | — | 8:47 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 20 | 19 | 19 | 19 | 18 | 19 | 19 | 18 | 19 | 19 | 18 | 19 | 19 | 18 | 19 | 19 | 19 | 21 | 21 | 21 |
Feels °C | 22 | 20 | 19 | 18 | 18 | 18 | 20 | 18 | 18 | 20 | 19 | 19 | 19 | 18 | 19 | 19 | 17 | 19 | 20 | 20 | 22 |
Swell 1 Height (m) Direction Period (s) | NNW 10 | NW 10 | NW 9 | NW 9 | NW 8 | NW 8 | WNW 10 | WNW 9 | NW 5 | NW 7 | NW 7 | W 9 | W 9 | W 9 | W 9 | W 8 | W 8 | W 9 | WNW 9 | W 9 | W 9 |
| kJ | 261 | 235 | 162 | 75 | 82 | 32 | 52 | 34 | 22 | 77 | 63 | 64 | 78 | 78 | 55 | 68 | 31 | 79 | 141 | 207 | 181 |
Swell 2 Height (m) Direction Period (s) | WNW 8 | WNW 8 | W 8 | NW 8 | WNW 10 | WNW 10 | NNW 8 | NW 8 | WNW 9 | WNW 9 | WNW 9 | NNW 9 | NNW 9 | NNW 8 | NNW 8 | NNW 5 | WNW 10 | NNW 7 | NNW 8 | NNW 9 | NNW 8 |
| kJ | 14 | 7 | 5 | 18 | 21 | 56 | 25 | 16 | 25 | 16 | 26 | 8 | 26 | 23 | 12 | 16 | 31 | 5 | 7 | 15 | 7 |
Swell 3 Height (m) Direction Period (s) | — | W 12 | W 11 | WNW 11 | — | N 10 | NW 4 | N 9 | NW 8 | W 12 | W 11 | N 10 | — | — | — | NNW 7 | NNW 7 | W 12 | NNW 3 | — | — |
| kJ | — | 3 | 10 | 22 | — | 2 | 6 | 2 | 10 | 3 | 21 | 8 | — | — | — | 10 | 5 | 3 | 1 | — | — |
Wind waves Height (m) Direction Period (s) | — | WNW 2 | — | — | — | NW 3 | — | NW 5 | — | — | NW 7 | NW 6 | NW 6 | NW 5 | NNW 5 | — | NNW 4 | NNW 4 | — | WNW 2 | — |
| kJ | — | 1 | — | — | — | 2 | — | 12 | — | — | 36 | 56 | 80 | 35 | 29 | — | 13 | 8 | — | 1 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 154 | 222 | 52 | 52 | 224 | 100 | 52 | 410 | 81 | 118 | 218 | 32 | 40 | 218 | 32 | 52 | 222 | 52 | 52 | 222 | 52 |
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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