Surf Forecasts:
Bonete (Ilha Bela) surf forecast from 18 Sep 2026:
- Best quality surf: Sunday 20 Sep, 12AM (local time) - 10ft (3.0m), 8s period, E swell with cross-shore winds.
- Most powerful swell: Wednesday 23 Sep, 9PM (local time) - 10ft (3.0m), 17s period, S swell with 4,241 kJ wave energy.
- Next surfable swell (1★+): Sunday 20 Sep, 12AM (local time) - 10ft (3.0m), 8s period with E swell.
Best Forecast Surf Conditions for Bonete (Ilha Bela) this week:
The surf forecast for Bonete (Ilha Bela) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Sep 20) at 12AM. The primary swell is predicted to be 3.0m and 8s period with a secondary swell of 0.5m and 9s. Another secondary swell of 0.4m and 12s is also forecast. The wind is predicted to be cross-shore as the swell arrives.
The most powerful waves expected at Bonete (Ilha Bela) in the next 16 days are 3.0m 17s and forecast to arrive on Wednesday (Sep 23) at 9PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Tuesday (Sep 22) at 12PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Sun 20th Sep) | 10ft (3.0m) 8s |
| Best Surf | 12AM (Sun 20th Sep) | 10ft (3.0m) 8s |
| Most Powerful | 9PM (Wed 23rd Sep) | 10ft (3.0m) 17s |
Table - best surf conditions forecast for Bonete (Ilha Bela) over the next 16 days.
Short Range ForecastLight rain (total 2mm), mostly falling on Fri night. Warm (max 26°C on Sun night, min 19°C on Fri night). Winds decreasing (fresh winds from the ENE on Fri night, light winds from the ENE by Sun morning). | Days 4-6 Weather SummaryHeavy rain (total 23mm), heaviest during Wed afternoon. Warm (max 30°C on Mon morning, min 19°C on Wed morning). Wind will be generally light. | ||||||||||||||||||||
Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 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) | S 11 | S 10 | E 7 | E 7 | E 7 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 9 | S 15 | S 14 | S 16 | S 14 | S 14 | S 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 332 | 254 | 401 | 425 | 448 | 1067 | 732 | 581 | 654 | 400 | 223 | 157 | 195 | 204 | 185 | 157 | 869 | 4226 | 2379 | 1699 | 1233 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-on | cross | cross-off | cross-off | cross-off | on | on | cross | cross-off | on | cross-off |
High Tide | 5:16PM0.76m | 12:15PM0.75m | 6:05PM0.66m | 12:31PM0.85m | 11:53PM0.70m | 12:51PM0.94m | 00:19AM0.82m | 1:11PM1.02m | 00:42AM0.94m | 1:32PM1.08m | 1:05AM1.05m | 1:51PM1.13m | 1:30AM1.14m | ||||||||
Low Tide | 10:01AM0.64m | 1:52AM0.43m | 4:12PM0.65m | 10:38PM0.57m | 4:05AM0.40m | 5:36PM0.56m | 5:20AM0.30m | 6:12PM0.46m | 6:09AM0.19m | 6:44PM0.37m | 6:49AM0.08m | 7:14PM0.29m | 7:25AM0.00m | 7:45PM0.22m | |||||||
 | |  | | |  |  | | |  | | | |  | | |  |  |  | |  | |
 | 5:54 | — | — | 5:54 | — | — | 5:52 | — | — | 5:52 | — | — | 5:50 | — | — | 5:50 | — | — | 5:48 | — | — |
 | — | 5:55 | — | — | 5:55 | — | — | 5:55 | — | — | 5:57 | — | — | 5:57 | — | — | 5:57 | — | — | 5:58 | — |
mm | — | — | 2 | — | — | — | — | — | — | — | — | — | — | 1 | 5 | 4 | 7 | 6 | 2 | 3 | — |
Temp °C | 21 | 21 | 20 | 21 | 20 | 20 | 22 | 24 | 26 | 30 | 30 | 24 | 22 | 22 | 21 | 19 | 19 | 20 | 21 | 21 | 21 |
Feels °C | 20 | 19 | 17 | 19 | 17 | 17 | 23 | 22 | 27 | 31 | 31 | 26 | 22 | 23 | 24 | 18 | 18 | 20 | 23 | 23 | 24 |
Swell 1 Height (m) Direction Period (s) | S 11 | S 10 | S 10 | S 10 | S 9 | S 9 | E 8 | S 12 | S 12 | E 8 | E 8 | E 8 | E 8 | E 8 | E 9 | S 5 | S 14 | S 16 | S 14 | S 14 | S 13 |
| kJ | 332 | 254 | 159 | 116 | 83 | 40 | 732 | 45 | 24 | 400 | 223 | 157 | 195 | 204 | 185 | 45 | 869 | 4226 | 2379 | 1699 | 1233 |
Swell 2 Height (m) Direction Period (s) | ESE 9 | — | — | S 14 | S 14 | S 12 | S 12 | — | — | S 11 | S 11 | S 10 | S 12 | S 12 | WSW 4 | E 9 | S 7 | E 12 | E 11 | E 8 | ESE 6 |
| kJ | 29 | — | — | 4 | 14 | 49 | 68 | — | — | 10 | 9 | 8 | 3 | 11 | 2 | 117 | 117 | 71 | 63 | 42 | 136 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | S 9 | — | — | — | — | — | E 14 | S 12 | S 12 | S 11 | S 15 | SSE 20 | — | E 11 | ESE 11 | ESE 10 |
| kJ | — | — | — | — | — | 13 | — | — | — | — | — | 4 | 3 | 11 | 10 | 157 | 507 | — | 62 | 39 | 36 |
Wind waves Height (m) Direction Period (s) | E 6 | E 6 | E 7 | E 7 | E 7 | E 8 | — | E 8 | E 8 | — | — | — | S 10 | W 4 | SSE 5 | — | E 9 | E 6 | ESE 6 | ESE 6 | — |
| kJ | 86 | 219 | 401 | 425 | 448 | 1067 | — | 581 | 654 | — | — | — | 7 | 13 | 20 | — | 145 | 59 | 159 | 124 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 16 | 22 | 22 | 22 | 26 | 22 | 3 | 26 | 0 | 3 | 16 | 3 | 10 | 0 | 0 | 41 | 41 | 22 | 0 | 35 | 0 |
Best forecast wave conditions in São Paulo | |||||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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Information about the Bonete (Ilha Bela) Surf forecast
The above surf forecast table for Bonete (Ilha Bela) provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Bonete (Ilha Bela) can be found by selecting the local surf guide option on the grey menu. Our Bonete (Ilha Bela) 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 (Bonete (Ilha Bela)) 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 Bonete (Ilha Bela) 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.
Bonete (Ilha Bela) is 16 km (10 miles) from the city of Ilhabela. If you plan a holiday in São Paulo, look for hotels and other accommodation in Ilhabela. Ilhabela has rooms for a wide range of budgets as well as car hire and transport links.
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