Costa Nova Surf Break

Lat Long: 40.63° N 8.75° W

Costa Nova Surf Forecast and Surf Report

Issued: 6 pm 12 Jul 2026 (local time)

Forecast update in  hr  min

Today's Costa Nova sea temperature is
17.9° C
0.7° 

Costa Nova surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Costa Nova surf forecast from 12 Jul 2026:

  • Best quality surf: Sunday 19 Jul, 10PM (local time) - 11ft (3.5m), 8s period, NNW swell with cross-shore winds.
  • Most powerful swell: Sunday 19 Jul, 10PM (local time) - 11ft (3.5m), 8s period, NNW swell with 1,525 kJ wave energy.
  • Next surfable swell (1★+): Monday 13 Jul, 1AM (local time) - 2ft (0.6m), 9s 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 Monday (Jul 13) at 1AM. The primary swell is predicted to be 0.6m and 9s period with a secondary swell of 0.5m and 7s. 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 3.5m 8s and forecast to arrive on Sunday (Jul 19) at 10PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Monday (Jul 13) at 7AM.

Wave TypeTime (WEST) & Date Wave Height & Period
Next good surf (1 star+) 1AM (Mon 13th Jul)2ft (0.6m) 9s
Best Surf10PM (Sun 19th Jul)11ft (3.5m) 8s
Most Powerful10PM (Sun 19th Jul)11ft (3.5m) 8s

Table - best surf conditions forecast for Costa Nova over the next 16 days.


Alright, folks, Rusty here. Let's talk about what's on the menu for Costa Nova over the next couple of weeks.

Right off the bat, it's a tough start. The next few days are looking pretty flat and messy. We're seeing some small, weak swells but the winds are all over the place, mostly onshore or cross-onshore, making a mess of things. You’ll have to sit through Monday, Tuesday, and Wednesday with barely anything rideable.

The first real glimmer of hope comes on Tuesday morning, July 14th. It's tiny – only about 1 ft of swell from the WNW – but it's glassy. Absolutely dead calm. That means the ocean will be like a mirror, and while the waves won't have any power, you might find a little knee-high slider just to get wet.

Then we get a whole lot of nothing until the swell starts to pick up around Friday the 18th. But don't get excited. We're looking at a building NNW swell that's going to be short period and contaminated by poor cross-onshore winds. This is where the setup gets real interesting for the kite crew. With the increasing swell and consistent side wind, it's going to be way more appealing for a kite than a paddle board.

The one major standout, and it's a big if, is Monday the 20th. Monday afternoon sees a massive jump in energy. We're talking about a solid 10 ft swell from the NNW with high energy (1218) and a reasonable 8-second period. The comment on the forecast even says the wind and tide are favorable, BUT it warns the swell is predicted to be too big for this break. This is for experts only, and even then, it might be a washing machine. The morning could be slightly smaller at 8 ft with lighter offshore wind (1223 energy), making it slightly more manageable, but still a heavy, heavy paddle. If you're a seasoned local and know where to sit, the Monday morning session is the only window with half-decent shape.

After that, the swell drops back down through the rest of the week, but the winds just won't cooperate. It's cross-on or onshore right through to the end of the 16 days.

So, to be honest, for pure, user-friendly surfing, the outlook is grim. Your best bet for getting a clean wave is that brief, tiny, glassy window on Tuesday morning the 14th. If you're an expert, the Monday the 20th window offers size, but be prepared for a beatdown. For the rest of us, it might be a good time to take the kite out or hang the board up until conditions change.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 21°C on Sun afternoon, min 16°C on Sun night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 20°C on Wed afternoon, min 17°C on Thu night). Wind will be generally light.

Sun
12
Monday
13
Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Saturday
18
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
0
1
0
0
1
1
0
1
1
0
1
1
0
0
0
0
0
0
0
2
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.7
NW
9
0.6
NW
9
0.4
NW
8
0.5
SW
7
0.8
W
6
0.4
WNW
11
0.4
WNW
10
0.4
WNW
10
0.5
W
9
0.7
W
7
0.8
W
7
0.4
WNW
9
0.4
WNW
9
0.4
WNW
8
0.9
NNW
4
1.2
NNW
5
1.7
NNW
6
1.6
NNW
6
1.8
NNW
6
2.5
NNW
7
1.7
NNW
6
Wave Graph
Metric surfscale
Energy kJ
76
49
24
21
48
40
34
31
41
46
56
27
26
24
29
64
187
184
238
686
245
Wind (km/h)
15
WSW
10
SSE
15
S
15
WSW
5
NE
0
S
15
W
5
ENE
5
WSW
15
W
5
N
5
WSW
20
NW
15
N
20
NNW
25
NNW
20
NNW
10
NW
20
NW
5
NW
10
SSW
Wind State
on
cross-off
cross
on
glassy
glassy
on
glassy
glassy
on
glassy
glassy
cross-on
cross
cross-on
cross-on
cross
cross-on
cross-on
cross-on
cross-on
High Tide
3:00AM2.97m
3:22PM3.16m
3:52AM3.06m
4:10PM3.28m
4:40AM3.10m
4:56PM3.35m
5:25AM3.10m
5:41PM3.35m
6:09AM3.05m
6:25PM3.29m
6:53AM2.96m
7:09PM3.17m
7:36AM2.84m
Low Tide
8:26PM0.97m
8:47AM0.98m
9:21PM0.83m
9:37AM0.89m
10:12PM0.73m
10:25AM0.83m
10:59PM0.69m
11:10AM0.81m
11:44PM0.72m
11:53AM0.85m
00:28AM0.80m
12:36PM0.93m
1:11AM0.93m
clear
clear
cloud
part cloud
cloud
part cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:13
6:15
6:16
6:16
6:18
6:18
6:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:06
9:06
9:05
9:05
9:04
9:02
9:02
9:01
 mm
Temp °C
21
19
20
20
19
20
20
19
20
20
19
20
20
19
18
18
17
18
18
18
19
Feels °C
20
19
18
19
20
19
19
20
20
20
20
19
19
18
16
15
16
19
16
18
20
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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