Surf Forecasts:
Costa Nova surf forecast from 18 Jul 2026:
- Best quality surf: Sunday 19 Jul, 4AM (local time) - 4ft (1.2m), 6s period, NNW swell with glassy winds.
- Most powerful swell: Sunday 19 Jul, 4AM (local time) - 4ft (1.2m), 6s period, NNW swell with 99 kJ wave energy.
- Next surfable swell (1★+): Sunday 19 Jul, 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 Sunday (Jul 19) at 4AM. The primary swell is predicted to be 1.2m and 6s period with a secondary swell of 0.1m and 10s. 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 1.2m 6s and forecast to arrive on Sunday (Jul 19) at 4AM. Winds are predicted to be glassy at the time the swell arrives.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sun 19th Jul) | 4ft (1.2m) 6s |
| Best Surf | 4AM (Sun 19th Jul) | 4ft (1.2m) 6s |
| Most Powerful | 4AM (Sun 19th Jul) | 4ft (1.2m) 6s |
Table - best surf conditions forecast for Costa Nova over the next 16 days.
The Lowdown
Hey, Rusty here. Let me tell you about the upcoming surf for Costa Nova. It's a bit of a mixed bag, and you'll need to be patient.
The first week is pretty flat and uninspiring, with a run of small, weak swells and mostly unfavourable winds. The water temp is a touch warmer than usual at 67.8°.
The first real glimmer of hope comes on the morning of Monday the 27th of July. We've got a bit of a pulse from the NNW, with swell heights around 4.9ft. The combined energy is moderate at 369, and the wind is light cross-onshore. It's not ideal, but it's the best we've seen in a while. The kicker is that by the afternoon, the wind cranks up to 18.6 mph from the NNW, making it pretty lumpy and messy. So, the morning is your window if you're keen.
The real standout, and the only time I'd get properly excited, is the morning of Wednesday the 29th of July. The swell is up to 6.9ft from the NNW, with a period of 9 seconds, giving it some decent energy (660). The wind is light from the N, which is a cross-shore, creating small, clean ripples. This is the best combination of size and clean conditions on offer. It's a solid intermediate swell, so not for the beginners, but for those with some experience, this is the one to circle. The following morning, Thursday the 30th, looks similar too, with light NNW winds and a 6.9ft swell, so that's another good option.
After that, the swell sticks around at 4.9ft to 6.9ft, but the wind is mostly cross-onshore, keeping the quality marginal. The week of the 31st of July and into August sees the swell ease off, but the wind remains a problem. The best bet is to hit the early morning windows when the wind is lighter.
So, to sum it up: there's a lot of waiting, but the morning of Wednesday the 29th of July is the standout. Get out there early for the cleanest lines.
Short Range ForecastMostly dry. Warm (max 22°C on Mon afternoon, min 17°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Tue afternoon, min 17°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | |||||||||||||||
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 5 | NW 5 | NNW 6 | NNW 6 | W 9 | NNW 7 | NW 7 | NW 7 | NNW 7 | NNW 7 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | NNW 7 | NNW 7 | WNW 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 17 | 18 | 90 | 34 | 15 | 36 | 73 | 75 | 43 | 28 | 20 | 33 | 32 | 31 | 16 | 16 | 16 | 15 | 17 | 16 | 12 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross-on | cross | on | glassy | cross | on | glassy | glassy | cross-on | cross-off | on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross |
High Tide | 7:09PM3.17m | 7:36AM2.84m | 7:55PM3.01m | 8:23AM2.72m | 8:43PM2.82m | 9:15AM2.60m | 9:40PM2.65m | 10:18AM2.51m | 10:48PM2.52m | 11:30AM2.49m | 00:03AM2.46m | 12:40PM2.53m | 1:11AM2.49m | ||||||||
Low Tide | 12:36PM0.93m | 1:11AM0.93m | 1:19PM1.04m | 1:54AM1.08m | 2:05PM1.18m | 2:40AM1.23m | 2:55PM1.33m | 3:30AM1.37m | 3:53PM1.45m | 4:28AM1.47m | 5:02PM1.53m | 5:34AM1.51m | 6:18PM1.52m | ||||||||
 |  |  | | | | | |  | | | | | | | | | | | | | |
 | 6:18 | — | — | 6:18 | — | — | 6:20 | — | — | 6:20 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — |
 | — | — | 9:02 | — | — | 9:01 | — | — | 9:00 | — | — | 9:00 | — | — | 9:00 | — | 8:59 | — | — | 8:58 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 19 | 19 | 20 | 21 | 20 | 21 | 22 | 21 | 20 | 21 | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 20 | 19 | 19 |
Feels °C | 20 | 17 | 19 | 19 | 20 | 22 | 21 | 22 | 23 | 22 | 21 | 21 | 19 | 19 | 20 | 20 | 17 | 18 | 18 | 17 | 19 |
Swell 1 Height (m) Direction Period (s) | NW 5 | WNW 8 | W 8 | NNW 6 | NNW 5 | NNW 7 | NW 7 | NW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NNW 6 | NW 6 | NNW 7 | NNW 7 | NNW 7 |
| kJ | 17 | 13 | 4 | 34 | 15 | 36 | 73 | 75 | 43 | 28 | 18 | 17 | 15 | 15 | 15 | 16 | 15 | 9 | 17 | 16 | 9 |
Swell 2 Height (m) Direction Period (s) | WNW 8 | SW 5 | NW 10 | W 5 | W 9 | NW 8 | W 8 | W 8 | W 4 | W 5 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | W 4 | WNW 8 |
| kJ | 13 | 1 | 4 | 10 | 14 | 17 | 11 | 10 | 6 | 7 | 20 | 33 | 32 | 31 | 16 | 16 | 16 | 15 | 14 | 3 | 6 |
Swell 3 Height (m) Direction Period (s) | SW 5 | — | NW 8 | WNW 7 | NW 7 | W 4 | WNW 12 | WNW 11 | WNW 11 | WNW 10 | W 5 | W 4 | W 4 | WSW 4 | WSW 4 | W 4 | W 5 | W 4 | W 4 | WNW 8 | S 11 |
| kJ | 1 | — | 3 | 11 | 9 | 5 | 15 | 12 | 23 | 21 | 4 | 4 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 13 | 2 |
Wind waves Height (m) Direction Period (s) | — | NW 5 | NNW 6 | — | W 4 | — | — | — | — | — | — | — | — | W 4 | — | — | — | — | — | — | WNW 5 |
| kJ | — | 18 | 90 | — | 6 | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | 12 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1122 | 1153 | 32 | 5 | 268 | 0 | 5 | 222 | 0 | 0 | 398 | 0 | 20 | 325 | 221 | 81 | 1155 | 221 | 300 | 752 | 264 |
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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