Foz do Arelho Surf Break

Lat Long: 39.44° N 9.23° W

Foz do Arelho Surf Forecast and Surf Report

Issued: 6 pm 16 Aug 2026 (local time)

Forecast update in  hr  min

Today's Foz do Arelho sea temperature is
19.4° C
1.0° 

Foz do Arelho surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Foz do Arelho surf forecast from 16 Aug 2026:

  • Best quality surf: Monday 17 Aug, 10AM (local time) - 5.5ft (1.7m), 8s period, NNW swell with glassy winds.
  • Most powerful swell: Friday 21 Aug, 1PM (local time) - 6.5ft (2.0m), 10s period, NNW swell with 839 kJ wave energy.
  • Next surfable swell (1★+): Monday 17 Aug, 10AM (local time) - 5.5ft (1.7m), 8s period with NNW swell.

Best Forecast Surf Conditions for Foz do Arelho this week:

The surf forecast for Foz do Arelho over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 17) at 10AM. The primary swell is predicted to be 1.7m and 8s period with a secondary swell of 0.1m and 15s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Foz do Arelho in the next 16 days are 2.0m 10s and forecast to arrive on Friday (Aug 21) at 1PM. Winds are predicted to be cross-onshore at the time the swell arrives.

Wave TypeTime (WEST) & Date Wave Height & Period
Next good surf (1 star+)10AM (Mon 17th Aug)5.5ft (1.7m) 8s
Best Surf10AM (Mon 17th Aug)5.5ft (1.7m) 8s
Most Powerful 1PM (Fri 21st Aug)6.5ft (2.0m) 10s

Table - best surf conditions forecast for Foz do Arelho over the next 16 days.


The Lowdown

Alright folks, Rusty here. Let’s have a look at what Foz do Arelho has cookin’ over the next couple of weeks.

The honest truth is, this run is a tough one. We’ve got a real slow start with barely anything worth paddling out for. The first real chance you’ve got is on Monday the 17th, but it’s a very specific window.

For the full 16 days, there isn’t a single standout session that’s got me shouting from the sand. The best on offer is that Monday morning. We’ll see a clean, NNW swell rolling in at about 6 ft, period a short 8 seconds. The energy is moderate at best (353). What makes it interesting is the wind – glassy, slight air, dead calm. That’s a rare treat, so if you’re a beginner looking for a clean, mellow paddle, that’s your window. Be aware, though, this spot can be inconsistent and sometimes crowded, so don’t expect perfection.

The water temp is sitting at 67°F, which is a bit colder than normal for this time of year, so you’ll want a decent wetsuit.

After that morning, the wind cops a northwesterly turn on Monday afternoon, going onshore and messing things up. Tuesday the 18th morning cleans up a bit with a cross-offshore breeze and 5 ft swell but the energy drops off (302). Tuesday afternoon gets blown out again.

The rest of the first week and into the second week is plagued by a persistent cross-onshore or onshore wind from the north or north-northwest, kicking up chop and making conditions poor. There’s a few small windows on the 25th and 31st with small, weak swell (3 ft and 5 ft respectively) and clean wind, but they’re just surfable, not exciting.

The period between the 19th and the 31st of August is mostly a write-off for quality surf. The swell sticks to that short-period NNW pulse, and the wind just won’t give us a break. If you’re keen on getting wet regardless, keep an eye on those early morning windows, but don’t expect any magic.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 27°C on Mon morning, min 20°C on Sun night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 22°C on Wed afternoon, min 18°C on Fri night). Winds decreasing (fresh winds from the NNW on Thu night, light winds from the NNW by Sat morning).

Sun
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
2
0
2
2
0
2
0
0
0
0
0
0
0
0
0
1
0
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.6
NNW
8
1.5
NNW
7
1.7
NNW
8
1.4
NNW
8
1.4
NNW
8
1.5
NNW
8
1.3
NNW
8
1.2
NNW
8
1
NNW
8
0.9
NNW
7
0.8
NNW
6
1.3
NNW
7
1.8
NNW
8
1.8
NNW
7
1.8
NNW
7
1.7
NNW
10
1.4
NNW
10
1.3
NNW
10
1.3
NNW
9
1.2
NNW
9
Wave Graph
Metric surfscale
Energy kJ
300
234
344
245
257
291
201
183
110
79
49
173
353
325
363
622
394
301
271
208
Wind (km/h)
20
N
15
N
5
NE
15
NW
5
NW
15
SSW
25
WSW
10
SSW
15
SW
20
W
10
N
20
N
25
NNW
30
NNW
25
NNW
25
NNW
20
NNW
10
NNW
15
WSW
15
SSE
Wind State
cross-on
cross-on
glassy
on
glassy
cross-off
cross
cross-off
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
cross-off
High Tide
6:04PM2.92m
6:26AM2.64m
6:43PM2.68m
7:04AM2.47m
7:24PM2.41m
7:47AM2.29m
8:11PM2.16m
8:39AM2.12m
9:14PM1.96m
9:52AM2.01m
10:43PM1.86m
11:24AM2.01m
00:12AM1.92m
Low Tide
00:15AM0.23m
12:26PM0.36m
00:51AM0.45m
1:07PM0.57m
1:30AM0.68m
1:53PM0.79m
2:14AM0.90m
2:52PM0.98m
3:17AM1.07m
4:19PM1.09m
4:49AM1.14m
5:57PM1.05m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:50
6:50
6:52
6:52
6:54
6:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:31
8:30
8:29
8:28
8:25
8:24
8:22
 mm
3
Temp °C
25
22
27
24
21
24
22
21
22
22
20
20
19
19
20
20
19
20
21
20
Feels °C
24
21
25
24
22
24
20
25
23
21
21
19
16
15
17
17
16
19
19
21
  • Map Icons:
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  • 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 Foz do Arelho Surf forecast

The above surf forecast table for Foz do Arelho provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Foz do Arelho can be found by selecting the local surf guide option on the grey menu. Our Foz do Arelho 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 (Foz do Arelho) 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 Foz do Arelho 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.

Foz do Arelho is 9 km (6 miles) from Caldad da Rainha. If you plan a holiday in Peniche, look for hotels and other accommodation in Caldad da Rainha. Caldad da Rainha has rooms for a wide range of budgets as well as car hire and transport links.

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