Turtle Island surfForecast / Banyak Islands / Indonesia

information circle12 Day Weather and Surf, issued 6 pm Thursday 20 Nov 2025 WIB
Forecast update in hr  min  s Forecast update imminent
Turtle Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Turtle Island sea temperature is
29.2° C
(Which is slightly warmer than usual)


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 Tuesday (Nov 25) at 10AM. The primary swell is predicted to be 0.8m and 14s period with a secondary swell of 0.5m and 9s. Another secondary swell of 1.2m and 6s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Turtle Island in the next 12 days are 1.0m 17s and forecast to arrive on Thursday (Nov 27) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Sunday (Nov 23) at 7AM.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+)10AM (Tue 25th Nov)2.5ft (0.8m) 14s
Best Surf 7AM (Thu 27th Nov)3ft (0.9m) 18s
Most Powerful 7PM (Thu 27th Nov)3.5ft (1.0m) 17s

Table - best surf conditions forecast for Turtle Island over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Heavy rain (total 94mm), heaviest during Fri night. Warm (max 28°C on Thu afternoon, min 25°C on Fri night). Mainly fresh winds.

Days 3-6 Weather Summary Heavy rain (total 124mm), heaviest during Mon night. Warm (max 28°C on Tue night, min 24°C on Mon night). Winds decreasing (fresh winds from the NW on Sun afternoon, light winds from the WSW by Mon night).

Thu
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
2
0
0
0
0
3
Swell
Height Map
Wave Height (m) & direction (?)
0.6
SW
0.8
SW
1
SW
0.9
SW
0.8
SSW
1
SW
1.1
SW
0.9
SSW
0.9
SW
0.9
SW
0.8
SSW
0.7
SW
0.7
SSW
0.6
SW
0.8
SW
0.9
SW
0.9
SW
0.9
SW
0.9
SW
0.6
SW
0.9
SW
Period(s) (?)161514141413131212121112121514141313131818
Wave
Graph
(?)Metric surfscale
Energy kJ (?)203301398308261336388260205205166137123174241272257249245260455
Wind
(km/h)
15
WNW
20
W
35
W
30
W
25
W
30
W
30
WNW
25
NW
30
NNW
35
NW
30
NW
20
WNW
20
WNW
10
WSW
15
N
25
NNW
25
NW
25
NW
15
NW
25
NW
10
NNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
crosscross-
off
crosscrosscrosscrosscross-
on
cross-
off
cross-
off
crosscrosscrosscrosscross-
off
High Tide
/ height (m)
6:19PM
0.73
6:31AM
0.43
6:49PM
0.72
7:01AM
0.41
7:20PM
0.71
7:30AM
0.39
7:53PM
0.69
8:02AM
0.38
8:27PM
0.67
8:38AM
0.37
9:03PM
0.65
9:25AM
0.36
9:45PM
0.62
10:32AM
0.36
Low Tide
/ height (m)
12:52AM
0.06
11:58AM
0.04
1:23AM
0.06
12:26PM
0.04
1:55AM
0.08
12:55PM
0.05
2:29AM
0.10
1:24PM
0.08
3:07AM
0.13
1:56PM
0.12
3:52AM
0.16
2:32PM
0.17
4:46AM
0.18
Thu
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Sunrise--6:16--6:16--6:16--6:16--6:16--6:18--6:18
Sunset6:16--6:16--6:17--6:17--6:17--6:17--6:19--
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
mod rain
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
light rain
cloud
cloud
light rain
light rain
mod rain
part cloud
Rain (mm)
120442516138351254951--2510-
Temp. °C282727272626252626262627272726262828252627
Feels °C (?)302825262724242625252528282927262928262729
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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