Surf Forecasts:
Ilha surf forecast from 15 Jul 2026:
- Best quality surf: Wednesday 15 Jul, 3AM (local time) - 4ft (1.2m), 10s period, SE swell with cross-offshore winds.
- Most powerful swell: Wednesday 15 Jul, 3PM (local time) - 4.5ft (1.3m), 10s period, SE swell with 335 kJ wave energy.
- Next surfable swell (1★+): Wednesday 15 Jul, 3AM (local time) - 4ft (1.2m), 10s period with SE swell.
Best Forecast Surf Conditions for Ilha this week:
The surf forecast for Ilha over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Jul 15) at 3AM. The primary swell is predicted to be 1.2m and 10s period with a secondary swell of 0.2m and 12s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Ilha in the next 16 days are 1.3m 10s and forecast to arrive on Wednesday (Jul 15) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Saturday (Jul 18) at 3AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Wed 15th Jul) | 4ft (1.2m) 10s |
| Best Surf | 3AM (Wed 15th Jul) | 4ft (1.2m) 10s |
| Most Powerful | 3PM (Wed 15th Jul) | 4.5ft (1.3m) 10s |
Table - best surf conditions forecast for Ilha over the next 16 days.
The Lowdown
Alright, Rusty here. Let's talk about what's cooking at Ilha.
We've got a bit of a mixed bag on the horizon. The good news is we’ll see some clean, glassy conditions, but the swell is going to be small and inconsistent for most of the run. The standout period is right at the start, so you'll want to be in the water early.
Wednesday, July 15th morning is your best bet. Ilha is a reef break, and with a 3.6ft SE swell (10-second period), combined energy is moderate (288). The wind is glassy from the NNE at 3 mph, making for perfect conditions. The water temp is about average for this time of year. This is the one to circle.
Thursday morning, July 16th, offers a similar story with 3.6ft SE swell and another glassy morning, though the combined energy is a touch weaker (286). It's still a solid option if you missed Wednesday.
From Friday, July 17th, the swell starts to drop. Friday morning sees 3ft SE swell with a clean offshore wind, but it's pretty weak. The weekend through the following week is a write-off, with tiny surf and generally poor winds. We're looking at a long gap of about 5 days with nothing worth paddling out for.
We see a little bump in energy on Thursday, July 24th morning. The swell is only 2ft, but it's a longer-period S groundswell (11 seconds) with a clean cross-offshore wind. The combined energy is moderate (132). It's a small, long-period swell, so it might be a bit slow and straight on the reef, but it beats the junk surrounding it.
The final week of the forecast is mostly a bust. Strong winds and poor conditions dominate. The 29th of July morning shows a 3ft SE swell with glassy conditions again, but the energy is low (107) and the period is short (7 seconds). It's a looker, but don't expect much push.
So, the takeaway? Get on it Wednesday or Thursday morning of this week. After that, the surf goes flat and ugly for a while.
Short Range ForecastMostly dry. Warm (max 26°C on Fri morning, min 16°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 32°C on Mon afternoon, min 21°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tue 21 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SSE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | ESE 11 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 272 | 265 | 335 | 122 | 226 | 204 | 200 | 164 | 122 | 116 | 106 | 122 | 50 | 57 | 54 | 53 | 36 | 53 | 50 | 36 | 38 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | glassy | cross-on | glassy | glassy | cross-on | cross-off | off | cross | cross-off | off | cross | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross |
High Tide | 2:43AM1.09m | 3:56PM1.19m | 3:17AM1.16m | 4:24PM1.13m | 3:52AM1.19m | 4:50PM1.07m | 4:27AM1.19m | 5:16PM1.01m | 5:05AM1.15m | 5:43PM0.96m | 5:45AM1.06m | 6:13PM0.91m | 6:31AM0.96m | ||||||||
Low Tide | 9:52PM0.42m | 9:48AM-0.04m | 10:21PM0.46m | 10:26AM-0.01m | 10:45PM0.49m | 11:01AM0.07m | 11:04PM0.49m | 11:33AM0.17m | 11:21PM0.48m | 12:05PM0.28m | 11:43PM0.47m | 12:39PM0.41m | 00:24AM0.47m | 1:31PM0.52m | |||||||
 |  | | | | | | | | | | | | | | | | | | | | |
 | — | 6:47 | — | — | 6:47 | — | — | 6:46 | — | — | 6:46 | — | — | 6:46 | — | — | 6:46 | — | — | 6:45 | — |
 | — | — | 5:34 | — | — | 5:34 | — | — | 5:35 | — | — | 5:35 | — | — | 5:36 | — | — | 5:36 | — | — | 5:37 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 18 | 19 | 18 | 21 | 20 | 21 | 26 | 26 | 25 | 27 | 29 | 26 | 29 | 30 | 27 | 31 | 32 | 27 | 32 | 33 |
Feels °C | 17 | 17 | 17 | 18 | 20 | 19 | 21 | 24 | 22 | 23 | 25 | 26 | 24 | 27 | 26 | 25 | 28 | 30 | 25 | 30 | 31 |
Swell 1 Height (m) Direction Period (s) | SSE 10 | SE 10 | SE 10 | ESE 6 | SE 10 | SE 10 | ESE 11 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 |
| kJ | 272 | 265 | 335 | 61 | 226 | 204 | 200 | 164 | 122 | 116 | 106 | 67 | 50 | 57 | 54 | 53 | 36 | 53 | 50 | 36 | 38 |
Swell 2 Height (m) Direction Period (s) | S 12 | S 11 | S 11 | SE 10 | ESE 6 | S 13 | S 13 | S 13 | S 18 | S 16 | S 15 | S 14 | ESE 10 | S 15 | S 15 | S 13 | S 12 | S 12 | S 11 | S 11 | S 10 |
| kJ | 12 | 23 | 2 | 122 | 56 | 3 | 3 | 3 | 6 | 5 | 4 | 4 | 10 | 4 | 4 | 14 | 3 | 3 | 2 | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | S 14 | S 13 | S 13 | S 12 | S 20 | S 12 | S 12 | S 11 | S 11 | S 17 | S 12 | — | — | — | — | — | — | S 13 |
| kJ | — | — | — | 4 | 4 | 3 | 3 | 7 | 3 | 3 | 3 | 2 | 6 | 3 | — | — | — | — | — | — | 4 |
Wind waves Height (m) Direction Period (s) | — | — | E 5 | ENE 5 | — | — | E 7 | — | ESE 8 | — | N 2 | ESE 8 | — | N 3 | — | N 2 | N 3 | — | — | NNW 2 | — |
| kJ | — | — | 66 | 30 | — | — | 142 | — | 75 | — | 1 | 122 | — | 1 | — | 1 | 1 | — | — | 1 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 2 | 0 | 0 | 2 | 0 | 0 | 8 | 0 | 0 | 2 | 0 | 0 | 8 | 0 | 31 | 0 | 0 | 21 | 21 |
Best forecast wave conditions in São Paulo | |||||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||||
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Information about the Ilha Surf forecast
The above surf forecast table for Ilha provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Ilha can be found by selecting the local surf guide option on the grey menu. Our Ilha 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 (Ilha) 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 Ilha 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.
Are you planning a holiday in São Paulo? If you are looking for accommodation near Ilha, camping, hotels and holiday cottages in São Paulo, consider staying in Praia Grande which is 19 km (12 miles) away. Other places in and around São Paulo where you can find information about places to rent, and car hire include Bertioga which is 19 km (12 miles) away, Guaruja, Cubatao and Santos.
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