Surf Forecasts:
Treasure Island surf forecast from 13 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 4PM (local time) - 3.5ft (1.1m), 20s period, SSW swell with cross-offshore winds.
- Most powerful swell: Wednesday 19 Aug, 1AM (local time) - 7ft (2.1m), 19s period, SSW swell with 3,097 kJ wave energy.
- Next surfable swell (1★+): Friday 14 Aug, 4AM (local time) - 3ft (0.9m), 15s period with SSW swell.
Best Forecast Surf Conditions for Treasure Island this week:
The surf forecast for Treasure Island over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 14) at 4AM. The primary swell is predicted to be 0.9m and 15s period with a secondary swell of 0.5m and 16s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Treasure Island in the next 16 days are 2.1m 19s and forecast to arrive on Wednesday (Aug 19) at 1AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 4s period and expected on Friday (Aug 14) at 1PM.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Fri 14th Aug) | 3ft (0.9m) 15s |
| Best Surf | 4PM (Tue 18th Aug) | 3.5ft (1.1m) 20s |
| Most Powerful | 1AM (Wed 19th Aug) | 7ft (2.1m) 19s |
Table - best surf conditions forecast for Treasure Island over the next 16 days.
Short Range ForecastHeavy rain (total 36mm), heaviest during Thu night. Warm (max 28°C on Sat afternoon, min 24°C on Thu night). Winds decreasing (fresh winds from the W on Fri morning, calm by Sat afternoon). | Days 4-6 Weather SummaryModerate rain (total 13mm), heaviest on Sun night. Warm (max 28°C on Mon morning, min 27°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | |||||||||||||||
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) | SSW 16 | SSW 16 | SSW 15 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 21 | SSW 18 | SSW 20 | SSW 19 | SSW 18 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 457 | 452 | 392 | 397 | 382 | 422 | 367 | 353 | 268 | 268 | 268 | 506 | 713 | 961 | 3097 | 2602 | 2832 | 2968 | 2551 | 2182 | 1626 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | on | glassy | glassy | on | on | glassy | cross | cross | cross-off | glassy | cross-on | cross-off | glassy | cross | glassy | glassy | glassy | cross-off | glassy |
High Tide | 7:13AM0.84m | 7:38PM0.63m | 7:49AM0.80m | 8:15PM0.66m | 8:22AM0.74m | 8:51PM0.68m | 8:53AM0.65m | 9:28PM0.66m | 9:21AM0.56m | 10:05PM0.63m | 9:46AM0.48m | 10:48PM0.58m | 10:07AM0.39m | 11:44PM0.53m | |||||||
Low Tide | 1:44PM0.01m | 1:24AM0.05m | 2:09PM0.02m | 2:04AM0.07m | 2:33PM0.04m | 2:42AM0.11m | 2:55PM0.05m | 3:20AM0.16m | 3:17PM0.08m | 4:00AM0.21m | 3:39PM0.10m | 4:48AM0.26m | 4:05PM0.13m | ||||||||
 |  |  |  |  |  | | |  | |  | | | |  | | | | | | | |
 | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — |
 | — | 6:40 | — | — | 6:39 | — | — | 6:39 | — | — | 6:39 | — | — | 6:39 | — | — | 6:38 | — | — | 6:38 | — |
mm | 14 | 6 | — | — | — | — | — | — | 4 | — | 1 | 4 | — | — | 1 | — | 3 | 5 | 1 | — | 1 |
Temp °C | 25 | 24 | 27 | 27 | 28 | 27 | 27 | 28 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 |
Feels °C | 27 | 23 | 26 | 29 | 32 | 30 | 31 | 31 | 30 | 31 | 31 | 32 | 31 | 32 | 33 | 31 | 31 | 32 | 31 | 31 | 32 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 15 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 21 | SSW 18 | SSW 16 | SSW 19 | SSW 18 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 |
| kJ | 457 | 452 | 392 | 397 | 382 | 422 | 367 | 353 | 268 | 268 | 268 | 506 | 713 | 733 | 3097 | 2602 | 2832 | 2968 | 2551 | 2182 | 1626 |
Swell 2 Height (m) Direction Period (s) | SW 15 | SW 15 | SW 16 | SSW 14 | S 12 | WNW 8 | WNW 8 | WNW 9 | WNW 8 | WNW 8 | WNW 8 | SW 13 | SSW 21 | SSW 20 | WNW 8 | W 8 | WSW 8 | W 8 | WNW 8 | W 9 | W 8 |
| kJ | 76 | 55 | 88 | 69 | 71 | 13 | 13 | 15 | 13 | 22 | 24 | 183 | 584 | 961 | 19 | 18 | 20 | 11 | 11 | 14 | 13 |
Swell 3 Height (m) Direction Period (s) | SSW 22 | SSW 21 | SSW 20 | ENE 4 | WNW 9 | SSE 13 | S 13 | SW 26 | SW 26 | SW 24 | SW 24 | WNW 8 | SW 13 | WNW 8 | WNW 8 | — | W 19 | W 18 | WNW 8 | W 9 | W 9 |
| kJ | 45 | 45 | 75 | 4 | 25 | 17 | 13 | 26 | 26 | 141 | 142 | 21 | 183 | 21 | 11 | — | 7 | 6 | 19 | 6 | 7 |
Wind waves Height (m) Direction Period (s) | W 7 | WSW 4 | ENE 3 | — | — | — | — | — | — | — | SSE 9 | — | — | — | — | WSW 8 | — | — | — | — | — |
| kJ | 17 | 18 | 2 | — | — | — | — | — | — | — | 8 | — | — | — | — | 19 | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 136 | 178 | 9 | 0 | 0 | 9 | 9 | 0 | 117 | 130 | 0 | 0 | 9 | 0 | 0 | 9 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Banyak Islands | |||||||||||||||||||||
Best forecast wave conditions in Indonesia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Treasure Island surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Treasure Island Surf forecast
The above surf forecast table for Treasure Island provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Treasure Island can be found by selecting the local surf guide option on the grey menu. Our Treasure Island 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 (Treasure Island) 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 Treasure Island 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 Banyak Islands? If you are looking for accommodation near Treasure Island, camping, hotels and holiday cottages in Banyak Islands, consider staying in Afia which is 86 km (53 miles) away.
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