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Turtle Island surfForecast / Banyak Islands / Indonesia
12 Day Weather and Surf, issued 12 pm Friday 03 Oct 2025 WIB
Best Forecast Surf Conditions for Turtle Island this week:
The surf forecast for Turtle Island over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Oct 04) at 1AM. The primary swell is predicted to be 1.9m and 16s period with a secondary swell of 0.3m and 8s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Turtle Island in the next 12 days are 1.9m 17s and forecast to arrive on Friday (Oct 03) at 7PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Saturday (Oct 04) at 1AM.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Sat 4th Oct) | 6ft (1.9m) 16s |
| Best Surf | 1AM (Sat 4th Oct) | 6ft (1.9m) 16s |
| Most Powerful | 7PM (Fri 3rd Oct) | 6ft (1.9m) 17s |
Table - best surf conditions forecast for Turtle Island over the next 12 days.
Short Range Forecast Moderate rain (total 15mm), heaviest on Fri morning. Warm (max 28°C on Sat afternoon, min 23°C on Fri morning). Winds decreasing (fresh winds from the NNE on Fri night, calm by Sat night). | Days 3-6 Weather Summary Mostly dry. Warm (max 28°C on Mon afternoon, min 27°C on Mon morning). Wind will be generally light. | ||||||||||||||||||||
Friday 03 | Saturday 04 | Sunday 05 | Monday 06 | Tuesday 07 | Wednesday 08 | Thursday 09 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 18 | 17 | 16 | 16 | 16 | 15 | 16 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 12 | 11 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 2078 | 2007 | 1832 | 1517 | 1339 | 1255 | 1305 | 1014 | 961 | 934 | 838 | 874 | 742 | 756 | 514 | 613 | 594 | 432 | 355 | 341 | 205 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | glass | off | cross- on | cross- on | glass | cross- off | on | glass | glass | cross- on | on | glass | on | glass | glass | cross- on | cross- on | glass | cross | cross |
High Tide / height (m) | 4:20PM 0.42 | 4:05AM 0.63 | 4:48PM 0.51 | 4:43AM 0.68 | 5:18PM 0.61 | 5:20AM 0.70 | 5:49PM 0.70 | 5:56AM 0.70 | 6:23PM 0.77 | 6:32AM 0.67 | 6:57PM 0.81 | 7:09AM 0.62 | 7:35PM 0.82 | ||||||||
Low Tide / height (m) | 9:36PM 0.22 | 10:48AM 0.11 | 10:26PM 0.16 | 11:11AM 0.06 | 11:10PM 0.11 | 11:36AM 0.02 | 11:52PM 0.05 | 12:03PM -0.01 | 12:33AM 0.02 | 12:31PM -0.03 | 1:15AM 0.00 | 12:59PM -0.03 | 1:58AM 0.02 | ||||||||
Friday 03 | Saturday 04 | Sunday 05 | Monday 06 | Tuesday 07 | Wednesday 08 | Thursday 09 | |||||||||||||||
| Sunrise | 6:18 | - | - | 6:16 | - | - | 6:16 | - | - | 6:16 | - | - | 6:16 | - | - | 6:16 | - | - | 6:16 | - | - |
| Sunset | - | 6:22 | - | - | 6:22 | - | - | 6:22 | - | - | 6:22 | - | - | 6:22 | - | - | 6:21 | - | - | 6:21 | - |
 |  |  |  |  |  | |  | | | | | | |  | | | | | | | |
Rain (mm) | 12 | 2 | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 24 | 25 | 27 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 |
| Feels °C (?) | 26 | 23 | 30 | 30 | 31 | 32 | 30 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 30 | 30 | 29 | 29 |
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Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Banyak Islands
The wind is still cross-off at Turtle Island (light winds from the NNW at Medan/Polonia Airport 243 km from Turtle Island). 1.3m 17s long period groundswell from the SW with a 0.4m 11s groundswell from the S and a 0.3m 7s swell from the WNW. 3 swells combining to make bigger set waves.
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 Turtle 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 Turtle Island Surf forecast
The above surf forecast table for Turtle Island provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Turtle Island can be found by selecting the local surf guide option on the grey menu. Our Turtle 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 (Turtle 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 Turtle 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 TurtleIsland, camping, hotels and holiday cottages in Banyak Islands, consider staying in Afia which is 87 km (54 miles) away.
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