Guaratuba Surf Break

Lat Long: 25.85° S 48.54° W

Guaratuba Surf Forecast and Surf Report

Issued: 2 pm 23 Aug 2026 (local time)

Forecast update in  hr  min

Today's Guaratuba sea temperature is
21.1°C
2.6° 

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


Guaratuba surf forecast from 23 Aug 2026:

  • Best quality surf: Monday 24 Aug, 6AM (local time) - 2.5ft (0.8m), 14s period, SE swell with glassy winds.
  • Most powerful swell: Wednesday 26 Aug, 9PM (local time) - 3ft (0.9m), 15s period, SE swell with 395 kJ wave energy.
  • Next surfable swell (1★+): Monday 24 Aug, 6AM (local time) - 2.5ft (0.8m), 14s period with SE swell.

Best Forecast Surf Conditions for Guaratuba this week:

The surf forecast for Guaratuba over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 24) at 6AM. The primary swell is predicted to be 0.8m and 14s period with a secondary swell of 0.4m and 4s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Guaratuba in the next 16 days are 0.9m 15s and forecast to arrive on Wednesday (Aug 26) at 9PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 7s period and expected on Friday (Aug 28) at 12AM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Mon 24th Aug)2.5ft (0.8m) 14s
Best Surf 6AM (Mon 24th Aug)2.5ft (0.8m) 14s
Most Powerful 9PM (Wed 26th Aug)3ft (0.9m) 15s

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


The Lowdown

Alright, Rusty here. Let's have a look at what's on the table for us.

First up, the water is running much warmer than normal for this time of year, sitting at 70°F. That’s a solid 5°F above average, so you can definitely leave the thick steamer at home.

The overall pattern for the next two weeks is pretty ordinary. We’ve got a long stretch of small, inconsistent swell with less-than-ideal wind. There are a few windows where things clean up, but nothing that’s going to blow your mind. The first real action doesn't kick off until Tuesday the 25th, and even then it’s marginal.

Tuesday morning, August 25th, is the first real standout. Guaratuba will see a 2ft swell from the SE with a period of 13 seconds. The energy is modest, at 110, but the key here is the glassy, glassy conditions. The wind is dead calm from the SW, making for a clean, smooth surface. This is your best bet for a quiet, easy-going session. It’s a beginner-friendly point break, and the waves will be small but clean.

Wednesday morning, August 26th, is another highlight. The swell bumps up to 3ft from the SE with a period of 16 seconds, pushing the energy up to 344. That’s a long-period groundswell, which will wrap nicely around the point. Again, we’re looking at glassy conditions with a slight WSW wind, so the surface will be clean. The forecast says "expect good surf conditions," which is about as good as it gets in this window. For a small point break, the long period means the waves will have a bit more push and shape, but the sets will be a little slower.

The rest of the forecast is a mixed bag of wind-affected, cross-onshore slop. There’s a chance of a clean session on the morning of Saturday, August 30th, with a 3ft ESE swell and a 9-second period, plus a clean cross-offshore wind from the SW. The energy is 160, so it’s alright, but it’s still a very ordinary day overall.

Looking further out, the second week is even more unreliable. There’s a moment on the morning of Wednesday, September 2nd, with a glassy 2ft swell from the SE and a period of 12 seconds, but the energy is only 155. It’s clean, but very small. The morning of Friday, September 4th, also offers a clean look with a 3ft SE swell, but again, the overall quality is rated as "very ordinary."

Honestly, mate, we’re in a bit of a flat spell. The best advice is to keep your eyes on Wednesday morning, August 26th. That’s your true standout with the cleanest conditions and the best-quality swell. For the rest of the time, it’s a skatepark or a paddleboard kind of fortnight.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 18°C on Wed morning, min 15°C on Sun night). Wind will be generally light.

Days 5-7 Weather Summary

Moderate rain (total 13mm), heaviest on Wed night. Warm (max 22°C on Fri afternoon, min 17°C on Wed afternoon). Wind will be generally light.

Sun
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
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
1
1
1
1
0
1
2
1
2
1
0
1
1
0
1
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
SE
13
0.6
SE
14
0.8
SE
14
0.8
SE
16
0.7
SE
14
0.6
SE
13
0.6
SE
13
0.4
SE
16
0.8
SE
16
0.9
SE
15
0.9
SE
15
0.8
SE
14
0.6
SE
13
0.6
SE
13
0.9
E
7
0.9
E
8
0.9
E
8
0.9
E
8
0.9
ESE
8
0.8
E
8
Wave Graph
Metric surfscale
Energy kJ
59
147
261
344
198
109
104
73
344
355
370
245
144
104
87
95
112
108
115
92
Wind (km/h)
15
SE
10
SSE
5
S
5
ESE
5
ENE
5
SW
5
SSW
5
WSW
5
WSW
5
SSE
5
W
5
SSW
10
SSE
5
WSW
10
N
10
NE
0
WNW
20
S
5
E
10
SSW
Wind State
on
cross-on
cross-on
cross-on
glassy
glassy
cross-on
glassy
glassy
cross-on
cross-off
cross
on
glassy
cross-off
cross
glassy
cross-on
cross-on
cross
High Tide
00:14AM1.02m
1:07PM1.22m
00:58AM1.16m
1:43PM1.32m
1:35AM1.28m
2:16PM1.40m
2:11AM1.39m
2:50PM1.44m
2:46AM1.45m
3:23PM1.45m
3:22AM1.48m
3:58PM1.41m
Low Tide
7:34PM0.49m
7:20AM0.23m
7:56PM0.43m
7:47AM0.13m
8:15PM0.38m
8:09AM0.06m
8:27PM0.35m
8:27AM0.01m
8:34PM0.31m
8:44AM-0.02m
8:45PM0.28m
9:03AM-0.01m
9:03PM0.24m
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
light rain
rain showers
part cloud
part cloud
clear
rain showers
rain showers
part cloud
clear
part cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:33
6:33
6:33
6:31
6:31
6:30
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:58
5:58
5:59
5:59
5:59
6:00
6:00
 mm
2
9
1
1
3
Temp °C
16
16
15
16
16
15
16
16
18
18
18
20
21
19
21
22
20
22
21
21
Feels °C
14
14
14
15
16
15
16
17
19
19
20
21
22
21
22
23
23
21
23
24
  • 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 Guaratuba Surf forecast

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

Guaratuba is 5 km (3 miles) from the city of Guaratuba. If you plan a holiday in Paraná, look for hotels and other accommodation in Guaratuba. Guaratuba has rooms for a wide range of budgets as well as car hire and transport links.

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