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São Sebastião / Guaecá

Guaecá

Data 100%

Spot data

Shows how much this spot read is supported by available data, such as waves, wind, tide, and local spot settings. 100% does not guarantee perfect surf. It means we have enough data to generate a more complete read.

Guaecá brings wave, wind, tide, and best-window signals into a clear read for choosing the session.

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AI summary for today and tomorrow.

Thursday (Sep 17) offers the best conditions, particularly early morning with ideal wind and swell, though tide is high. The period from 8 AM to 6 PM remains good with stable waves and more favorable tide. Friday (Sep 18) is also surfable with good size and tide, but stronger wind slightly lowers the quality.

Note: We read the data to help with your decision, but the ocean always has the final word. Use Surflow as a reference and confirm the real conditions before paddling out.

Hourly details

10-day forecast Free account
Today · Thu 17 Tomorrow · Fri 18 Sat 19
Time 00:00 01:00 02:00 03:00 04:00 05:00 06:00 07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 00:00 01:00 02:00 03:00 04:00 05:00 06:00 07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 00:00 01:00 02:00 03:00 04:00 05:00 06:00 07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00
Quality Good Good Good Good Fair Fair Fair Good Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Good Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Fair Poor Poor Poor Poor Poor Poor Poor Poor Poor Poor Poor Poor
Sessions — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
Community — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
Wave (m) 1.6 1.6 1.6 1.6 1.6 1.5 1.5 1.5 1.5 1.5 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.4 1.4 1.4 1.4 1.4 1.4 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.4 1.4 1.4 1.4 1.4 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.4 1.4 1.4 1.4
Per (s) 8 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 8 8 8 8 8 8 8 8 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7
Swell 1 (m) 1.6 S↑ 1.6 S↑ 1.6 S↑ 1.5 S↑ 1.5 S↑ 1.5 S↑ 1.4 S↑ 1.5 S↑ 1.5 S↑ 1.5 S↑ 1.5 S↑ 1.6 S↑ 1.6 S↑ 1.6 S↑ 1.6 S↑ 1.6 S↑ 1.6 S↑ 1.6 S↑ 1.6 S↑ 1.5 S↑ 1.5 S↑ 1.4 S↑ 1.4 S↑ 1.4 S↑ 1.4 S↑ 1.4 S↑ 1.4 S↑ 1.3 S↑ 1.3 S↑ 1.3 S↑ 1.3 S↑ 1.3 S↑ 1.3 S↑ 1.3 S↑ 1.3 S↑ 1.3 S↑ 1.3 S↑ 1.2 S↑ 1.2 S↑ 1.2 S↑ 1.1 S↑ 1.1 S↑ 1 S↑ 1 S↑ 1 S↑ 1 S↑ 1 SE↖ 0.9 SE↖ 0.9 SE↖ 1 SE↖ 1 SE↖ 1 SE↖ 1 SE↖ 1.1 SE↖ 1.1 SE↖ 1 SE↖ 1 SE↖ 1 SE↖ 1 SE↖ 1 SE↖ 1 SE↖ 1 SE↖ 0.9 SE↖ 0.9 SE↖ 0.9 SE↖ 1 SE↖ 1 SE↖ 1 SE↖ 1.1 SE↖ 1.1 SE↖ 1.2 SE↖ 1.2 SE↖
Swell 2 (m) 0.1 S↑ 0.1 S↑ 0.1 S↑ 0.1 S↑ 0.2 S↑ 0.4 S↑ 0.5 S↑ 0.3 S↑ 0.2 S↑ 0 S↑ 0 SE↖ 0 E← 0 NE↙ 0.1 E← 0.1 E← 0.2 SE↖ 0.2 E← 0.1 E← 0.1 NE↙ 0.2 E← 0.4 E← 0.5 SE↖ 0.5 SE↖ 0.5 SE↖ 0.4 SE↖ 0.5 SE↖ 0.5 SE↖ 0.6 SE↖ 0.6 SE↖ 0.5 SE↖ 0.5 SE↖ 0.5 SE↖ 0.5 E← 0.5 E← 0.5 E← 0.6 SE↖ 0.6 SE↖ 0.6 SE↖ 0.6 SE↖ 0.7 SE↖ 0.7 SE↖ 0.7 SE↖ 0.7 SE↖ 0.8 SE↖ 0.8 SE↖ 0.9 SE↖ 0.8 SE↖ 0.8 S↑ 0.8 S↑ 0.8 S↑ 0.8 S↑ 0.8 S↑ 0.8 S↑ 0.7 S↑ 0.7 S↑ 0.7 S↑ 0.7 S↑ 0.7 S↑ 0.7 S↑ 0.7 S↑ 0.6 S↑ 0.6 S↑ 0.6 S↑ 0.6 S↑ 0.6 S↑ 0.6 S↑ 0.5 S↑ 0.5 S↑ 0.4 S↑ 0.4 S↑ 0.4 S↑ 0.4 S↑
Wind (km/h) 2 NE ↙ 3 N ↓ 3 N ↓ 3 N ↓ 3 N ↓ 3 N ↓ 4 N ↓ 4 N ↓ 6 NE ↙ 9 NE ↙ 10 NE ↙ 11 NE ↙ 13 NE ↙ 12 NE ↙ 12 NE ↙ 12 NE ↙ 11 NE ↙ 9 NE ↙ 8 NE ↙ 7 NE ↙ 8 NE ↙ 9 NE ↙ 10 NE ↙ 9 NE ↙ 9 NE ↙ 10 NE ↙ 9 NE ↙ 9 NE ↙ 9 NE ↙ 10 NE ↙ 10 NE ↙ 9 NE ↙ 10 NE ↙ 13 NE ↙ 14 NE ↙ 15 NE ↙ 16 NE ↙ 16 NE ↙ 17 NE ↙ 17 NE ↙ 16 NE ↙ 14 NE ↙ 12 NE ↙ 14 NE ↙ 17 NE ↙ 18 NE ↙ 18 NE ↙ 19 NE ↙ 18 NE ↙ 15 NE ↙ 13 NE ↙ 12 NE ↙ 10 NE ↙ 10 NE ↙ 9 NE ↙ 10 NE ↙ 11 NE ↙ 12 NE ↙ 13 NE ↙ 16 NE ↙ 18 NE ↙ 20 NE ↙ 20 NE ↙ 20 NE ↙ 19 NE ↙ 18 NE ↙ 17 NE ↙ 19 NE ↙ 19 NE ↙ 16 NE ↙ 15 NE ↙ 13 NE ↙
Gusts (km/h) 12 14 15 16 16 18 18 19 23 28 36 38 41 41 40 41 39 36 32 31 31 36 36 38 36 37 36 36 37 38 39 38 35 44 47 50 52 53 55 55 55 51 49 49 55 58 60 61 62 58 52 46 41 37 36 36 37 38 42 52 56 61 62 63 62 62 58 58 60 58 46 43
Tide Low ↑ Low ↑ Low ↑ Mid ↑ High ↑ High ↑ High ↓ Mid ↓ Low ↓ Low ↓ Low ↓ Low ↓ Low ↑ Low ↑ Low ↑ Mid ↑ High ↑ High ↑ High ↓ Mid ↓ Low ↓ Low ↓ Low ↓ Low ↓ Low ↑ Low ↑ Low ↑ Mid ↑ High ↑ High ↑ High ↓ Mid ↓ Low ↓ Low High Low Low Low Low Mid ↑ Mid ↑ High ↑ High ↓ High ↓ Mid ↓ Low ↓ Low ↓ Low ↓ Low ↓ Low Low Low ↑ Low ↑ Low ↑ Mid ↑ Mid ↑ Mid ↑ High ↑ High ↑ High ↑ High High High ↓ Mid ↓ Low ↓ Low High High ↓ Low ↓ Low High High ↓

Surf quality

Quality summarizes how favorable the forecast conditions are for surfing, from worst to best.

  • Bad Unfavorable conditions, with no shape or very difficult surf.
  • Poor Weak, below-average conditions with little potential.
  • Fair Surfable, but with limitations in shape or conditions.
  • Good Favorable conditions, with good shape and potential for a good session.
  • Epic Exceptional conditions for the spot, close to the best it can offer.

Your sessions

Shows the sessions you recorded in conditions similar to those forecast for each time. To find similar sessions, we consider the spot, wave height, period, swell, wind, and tide.
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Use your sessions here

Create an account, save your surf sessions, and Surflow will show which past sessions matched each forecast time so you can decide with more context.
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Community rating

Shows the average sea rating from sessions at this spot in conditions similar to those forecast for each time. To find similar sessions, we consider wave height, period, swell, wind, and tide.
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Nearby spots

Jump between nearby breaks without leaving the forecast flow.

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Source: Open-Meteo | TideCheck