Surf Forecasts:
Costa Nova surf forecast from 16 Jul 2026:
- Best quality surf: Sunday 19 Jul, 4AM (local time) - 2.5ft (0.8m), 6s period, NW swell with cross-offshore winds.
- Most powerful swell: Monday 20 Jul, 4PM (local time) - 3ft (0.9m), 7s period, NW swell with 79 kJ wave energy.
- Next surfable swell (1★+): Sunday 19 Jul, 4AM (local time) - 2.5ft (0.8m), 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 Sunday (Jul 19) at 4AM. The primary swell is predicted to be 0.8m and 6s period with a secondary swell of 0.3m and 8s. 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 0.9m 7s and forecast to arrive on Monday (Jul 20) 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 (Sun 19th Jul) | 2.5ft (0.8m) 6s |
| Best Surf | 4AM (Sun 19th Jul) | 2.5ft (0.8m) 6s |
| Most Powerful | 4PM (Mon 20th Jul) | 3ft (0.9m) 7s |
Table - best surf conditions forecast for Costa Nova over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break down what’s goin’ on at Costa Nova.
First off, it’s a real slow burn. From Wednesday the 15th through Sunday the 19th of July, it’s mostly tiny, onshore junk. Waves are 1ft to 2ft at best, with winds blowin’ onshore or cross-onshore. Not worth paddlin’ out.
Then Monday the 20th morning, we get a little bump—2ft from the NW with a clean cross-offshore breeze. It's surfable, but weak. Combined energy’s only 84. Tuesday the 21st morning goes glassy with 3ft from the NW—still small, but glassy as glass. That’s your best early window if you’re keen.
The rest of that week and into the next is still quiet. A few glassy mornings with 1ft to 2ft waves, but nothin’ with any grunt.
Now, the real standout is Thursday morning the 30th of July. That’s over a week out, so take it with a grain of salt, but the numbers look tasty. We’re talkin’ 7ft of NW groundswell, period at 9 seconds—good energy. The wind flips offshore from the ENE, light and clean. Combined energy is a strong 1036. That’s for experienced surfers only—over 8ft is expert territory, and 7ft is no joke. Costa Nova’s a beach/jetty setup, so that longer-period NW swell might get a bit straight, but with clean conditions, you’ll pick off some bombs.
Before that, on the 29th, you get 6ft to 6ft NW swell, but the wind is howlin’ cross-shore at 12-18 mph, makin’ it lumpy and messy.
So, to sum it up: the first two weeks are mostly flat or rubbish. The one day to have on your radar is Thursday the 30th—early, glassy, solid NW groundswell, experts only. Otherwise, keep the board in the truck.
Water temp on the 15th is about 65°F, pretty average for July—no big anomaly.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Wed afternoon, min 16°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 20°C on Sun afternoon, min 16°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Wed 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | W 9 | WNW 10 | WNW 9 | WNW 9 | WNW 8 | WNW 8 | WNW 8 | NNW 4 | NW 4 | WNW 8 | NW 5 | NNW 6 | NNW 7 | NNW 8 | NW 8 | NW 7 | NW 7 | NW 7 | WNW 10 | WNW 10 | NNW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 39 | 18 | 27 | 26 | 24 | 13 | 13 | 14 | 13 | 21 | 23 | 31 | 29 | 26 | 57 | 79 | 75 | 55 | 33 | 32 | 38 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | glassy | cross-on | on | cross | cross-on | cross-on | cross | cross | cross-on | glassy | cross-on | cross-on | cross-off | cross-off | on | glassy | glassy | cross-on | glassy | glassy |
High Tide | 4:56PM3.35m | 5:25AM3.10m | 5:41PM3.35m | 6:09AM3.05m | 6:25PM3.29m | 6:53AM2.96m | 7:09PM3.17m | 7:36AM2.84m | 7:55PM3.01m | 8:23AM2.72m | 8:43PM2.82m | 9:15AM2.60m | 9:40PM2.65m | 10:18AM2.51m | |||||||
Low Tide | 10:59PM0.69m | 11:10AM0.81m | 11:44PM0.72m | 11:53AM0.85m | 00:28AM0.80m | 12:36PM0.93m | 1:11AM0.93m | 1:19PM1.04m | 1:54AM1.08m | 2:05PM1.18m | 2:40AM1.23m | 2:55PM1.33m | 3:30AM1.37m | ||||||||
 |  | | | |  | | | | |  | | | | | | | | | | | |
 | — | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:20 | — | — | 6:20 | — | — | 6:22 |
 | — | 9:05 | — | — | 9:04 | — | — | 9:02 | — | — | 9:02 | — | — | 9:01 | — | — | 9:00 | — | — | 9:00 | 9:00 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 20 | 21 | 20 | 20 | 19 | 19 | 18 | 19 | 19 | 18 | 19 | 20 | 19 | 20 | 19 | 19 | 20 | 20 | 19 | 19 |
Feels °C | 21 | 21 | 20 | 20 | 22 | 20 | 17 | 18 | 20 | 18 | 20 | 20 | 19 | 21 | 20 | 19 | 21 | 20 | 20 | 20 | 21 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 5 | WNW 9 | WNW 9 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | NW 4 | WNW 8 | NW 5 | NNW 6 | NNW 7 | NNW 8 | NW 8 | NW 7 | NW 7 | NW 7 | NNW 7 | NNW 6 | NNW 7 |
| kJ | 39 | 5 | 27 | 26 | 24 | 13 | 13 | 13 | 13 | 21 | 23 | 31 | 29 | 26 | 57 | 79 | 75 | 55 | 25 | 15 | 38 |
Swell 2 Height (m) Direction Period (s) | W 5 | W 8 | W 5 | NW 6 | WSW 5 | W 5 | WSW 5 | SW 6 | WNW 8 | SW 5 | WNW 8 | W 5 | W 9 | W 4 | W 8 | W 7 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | WNW 10 |
| kJ | 8 | 12 | 4 | 1 | 7 | 4 | 2 | 1 | 13 | 1 | 11 | 7 | 14 | 6 | 11 | 10 | 23 | 20 | 33 | 32 | 31 |
Swell 3 Height (m) Direction Period (s) | NNW 6 | WNW 10 | SW 13 | SW 13 | S 11 | SW 11 | W 6 | SW 4 | SW 5 | — | WNW 8 | WNW 7 | NNW 9 | NNW 5 | WNW 13 | WNW 12 | W 7 | W 7 | SW 14 | WNW 5 | NNW 9 |
| kJ | 4 | 18 | 7 | 7 | 2 | 5 | 1 | 1 | 1 | — | 7 | 11 | 8 | 6 | 16 | 13 | 9 | 4 | 8 | 8 | 8 |
Wind waves Height (m) Direction Period (s) | — | — | — | WSW 5 | — | — | NW 3 | NNW 4 | — | NNW 5 | — | — | W 5 | — | — | NW 7 | — | — | WNW 5 | — | — |
| kJ | — | — | — | 4 | — | — | 2 | 14 | — | 17 | — | — | 7 | — | — | 43 | — | — | 15 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 298 | 20 | 1135 | 504 | 222 | 739 | 1356 | 531 | 1117 | 357 | 81 | 358 | 268 | 222 | 0 | 222 | 0 | 0 | 224 | 0 | 0 |
Best forecast wave conditions in Beira | |||||||||||||||||||||
Best forecast wave conditions in Portugal | |||||||||||||||||||||
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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 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.
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