Surf Forecasts:
Costa Nova surf forecast from 31 Jul 2026:
- Best quality surf: Saturday 1 Aug, 4AM (local time) - 4ft (1.2m), 6s period, NNW swell with glassy winds.
- Most powerful swell: Monday 3 Aug, 4PM (local time) - 3.5ft (1.1m), 8s period, W swell with 157 kJ wave energy.
- Next surfable swell (1★+): Saturday 1 Aug, 4AM (local time) - 4ft (1.2m), 6s period with NNW 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 Saturday (Aug 01) at 4AM. The primary swell is predicted to be 1.2m and 6s period with a secondary swell of 0.7m 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 8s and forecast to arrive on Monday (Aug 03) at 4PM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sat 1st Aug) | 4ft (1.2m) 6s |
| Best Surf | 4AM (Sat 1st Aug) | 4ft (1.2m) 6s |
| Most Powerful | 4PM (Mon 3rd Aug) | 3.5ft (1.1m) 8s |
Table - best surf conditions forecast for Costa Nova over the next 16 days.
The Lowdown
Rusty here, let’s talk about Costa Nova.
Alright, I’m gonna be straight with you: the next couple of weeks are a tough run. There’s a big dry spell right at the start. From Friday the 31st all the way through to Sunday the 10th of August, there’s barely a wave worth chasing. Most of it is cross-onshore wind, choppy, messy – just not surfable.
The one little window of hope comes on Monday morning, August 10th. It’s not pumping, but it’s the best we’ve got. Costa Nova will see a 5ft swell out of the NNW with a short period of 6 seconds – windswell stuff, so those quick close together waves at a beach and jetty break. The big win is the wind: glassy – dead calm, offshore from the WSW at 3 mph. Clean as a whistle. The combined energy is a strong 212, so there’s some grunt in it. At 5ft, it’s still manageable for most intermediate surfers. Water’s a touch warmer than usual for this time of year.
That Monday morning is your only real standout. After that, it’s back to cross-onshore junk and lumpy seas through the rest of the week and into the 15th. Swells hover around 3ft but with fresh breezes and chop, it’s more headache than fun.
So if you want a wave, be on the water that Monday morning. Get out early, soak up the glass, and enjoy it while it lasts. Otherwise, you’re waiting a long time.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Mon morning, min 17°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 22°C on Mon afternoon, min 17°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Fri 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | ||||||||||||||
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 | NNW 6 | W 9 | W 9 | NW 7 | NNW 6 | W 10 | W 9 | W 9 | W 8 | W 9 | W 9 | W 8 | W 8 | W 8 | NNW 8 | W 10 | W 10 | NNW 9 | NNW 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 26 | 99 | 82 | 60 | 79 | 57 | 66 | 63 | 78 | 157 | 152 | 122 | 90 | 86 | 55 | 46 | 74 | 71 | 101 | 59 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | glassy | cross-on | cross-on | cross-on | cross-on | glassy | cross | on | glassy | cross-on | on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross |
High Tide | 5:25PM3.14m | 5:43AM2.97m | 5:56PM3.14m | 6:14AM2.94m | 6:28PM3.10m | 6:48AM2.89m | 7:03PM3.02m | 7:26AM2.81m | 7:44PM2.91m | 8:11AM2.71m | 8:35PM2.77m | 9:12AM2.61m | 9:48PM2.63m | |||||||
Low Tide | 11:24PM0.86m | 11:33AM0.89m | 11:59PM0.85m | 12:09PM0.91m | 00:37AM0.89m | 12:48PM0.97m | 1:17AM0.97m | 1:31PM1.06m | 2:02AM1.08m | 2:21PM1.18m | 2:55AM1.21m | 3:21PM1.29m | 4:00AM1.32m | |||||||
 |  |  | |  | | | | | | | | | | | | | | | | |
 | — | — | 6:31 | — | — | 6:31 | — | — | 6:33 | — | — | 6:33 | — | — | 6:35 | — | — | 6:35 | — | — |
 | 8:51 | — | — | 8:50 | — | — | 8:49 | — | — | 8:47 | — | — | 8:46 | — | — | 8:45 | — | — | 8:45 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 18 | 19 | 20 | 19 | 20 | 20 | 20 | 21 | 22 | 21 | 22 | 22 | 21 | 20 | 20 | 18 | 19 | 20 | 20 |
Feels °C | 16 | 18 | 21 | 19 | 20 | 20 | 19 | 21 | 20 | 22 | 24 | 21 | 21 | 22 | 20 | 17 | 16 | 19 | 18 | 21 |
Swell 1 Height (m) Direction Period (s) | WNW 9 | W 9 | NNW 6 | W 9 | NW 7 | NNW 6 | W 10 | W 9 | W 9 | W 8 | W 9 | W 9 | W 8 | W 8 | W 8 | NNW 8 | NW 8 | NNW 8 | NNW 9 | NNW 8 |
| kJ | 26 | 85 | 82 | 60 | 79 | 57 | 66 | 63 | 78 | 157 | 152 | 122 | 90 | 86 | 55 | 46 | 74 | 58 | 101 | 59 |
Swell 2 Height (m) Direction Period (s) | W 11 | NW 9 | W 9 | NNW 8 | W 9 | W 10 | NNW 7 | NW 4 | NNW 7 | NNW 8 | NNW 8 | N 8 | NW 11 | NNW 9 | NW 8 | W 7 | W 10 | W 10 | W 10 | W 10 |
| kJ | 10 | 3 | 73 | 24 | 41 | 48 | 10 | 5 | 11 | 6 | 6 | 6 | 30 | 34 | 35 | 37 | 74 | 71 | 49 | 47 |
Swell 3 Height (m) Direction Period (s) | NNW 7 | N 10 | N 9 | WSW 8 | WSW 8 | WSW 7 | — | NNW 7 | W 15 | — | SW 13 | NW 11 | N 9 | SW 12 | WNW 10 | WNW 10 | SW 12 | NNW 10 | SW 12 | SW 13 |
| kJ | 5 | 2 | 6 | 12 | 13 | 10 | — | 5 | 4 | — | 7 | 5 | 6 | 6 | 20 | 35 | 6 | 38 | 5 | 7 |
Wind waves Height (m) Direction Period (s) | NW 5 | NNW 6 | — | NW 6 | — | — | NW 5 | — | — | — | — | — | — | — | — | NW 3 | NNW 4 | — | — | — |
| kJ | 18 | 99 | — | 37 | — | — | 20 | — | — | — | — | — | — | — | — | 3 | 8 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 248 | 32 | 0 | 248 | 52 | 52 | 222 | 0 | 8 | 218 | 0 | 83 | 218 | 52 | 118 | 218 | 76 | 52 | 222 | 41 |
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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