Wanjapu surfForecast / Sumba / Indonesia

information circle12 Day Weather and Surf, issued 1 pm Wednesday 17 Dec 2025 WITA
Forecast update in hr  min  s Forecast update imminent
Wanjapu surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Wanjapu sea temperature is
30.1° C
(Which is slightly warmer than usual)


Best Forecast Surf Conditions for Wanjapu this week:

The surf forecast for Wanjapu over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Dec 17) at 11PM. The primary swell is predicted to be 0.9m and 16s period with a secondary swell of 1.1m and 9s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Wanjapu in the next 12 days are 1.6m 13s and forecast to arrive on Wednesday (Dec 24) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives.

Wave TypeTime (WITA) & Date Wave Height & Period
Next good surf (1 star+)11PM (Wed 17th Dec)3ft (0.9m) 16s
Best Surf11PM (Wed 17th Dec)3ft (0.9m) 16s
Most Powerful11AM (Wed 24th Dec)5ft (1.6m) 13s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Moderate rain (total 10mm), heaviest on Thu night. Warm (max 29°C on Wed afternoon, min 27°C on Wed night). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 57mm), heaviest during Mon morning. Warm (max 29°C on Sat afternoon, min 27°C on Sat night). Wind will be generally light.

Wed
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
2
3
2
3
3
3
2
2
2
2
0
0
0
0
0
0
0
1
0
1
1
Swell
Height Map
Wave Height (m) & direction (?)
0.8
SW
0.9
SW
1
SW
1.3
SW
1.2
SW
1.2
SW
1.2
SW
1.1
SW
1.1
SW
1.1
SW
1.1
SW
0.9
SW
0.9
SSW
0.9
SW
0.6
SW
0.9
SSW
0.9
SW
0.9
SW
1
SW
1.4
SW
1.6
SW
Period(s) (?)161615161514141312121110101015111414131313
Wave
Graph
(?)Metric surfscale
Energy kJ (?)371427456763606590526380392349303145185151174227341286347711905
Wind
(km/h)
5
W
0
E
5
NW
5
SSW
5
NE
5
N
5
SE
5
N
5
WNW
15
NNW
15
WSW
15
SW
20
WSW
20
WSW
20
SW
15
SW
15
WSW
15
WSW
15
WSW
15
W
20
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
glasscrossglassoffglasscrossglasscrosscross-
off
cross-
on
onononononcross-
on
cross-
on
oncross-
on
cross-
on
High Tide
/ height (m)
8:36PM
2.47
9:49AM
1.98
9:15PM
2.57
10:24AM
2.07
9:51PM
2.66
10:56AM
2.14
10:26PM
2.74
11:28AM
2.19
11:00PM
2.79
11:59AM
2.23
11:32PM
2.80
12:31PM
2.27
12:04AM
2.76
1:02PM
2.29
Low Tide
/ height (m)
2:23PM
1.18
3:34AM
0.52
3:07PM
1.10
4:08AM
0.38
3:45PM
1.02
4:41AM
0.27
4:21PM
0.94
5:13AM
0.20
4:55PM
0.89
5:44AM
0.17
5:28PM
0.86
6:16AM
0.18
6:03PM
0.87
6:46AM
0.22
Wed
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Sunrise--5:39--5:39--5:39--5:39--5:41--5:41--5:41
Sunset6:20--6:20--6:21--6:21--6:22--6:22--6:22--
clear
clear
clear
thunderstorm
thunderstorm
clear
part cloud
thunderstorm
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
Rain (mm)
---23--322113131010143284
Temp. °C292828292829292828292829292828282829292828
Feels °C (?)323232333233343131313131312930303232313129
  • Map Icons:
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  • 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 Wanjapu Surf forecast

The above surf forecast table for Wanjapu provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Wanjapu can be found by selecting the local surf guide option on the grey menu. Our Wanjapu 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 (Wanjapu) 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 Wanjapu 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.

Wanjapu is 24 km (15 miles) from the city of Adalara. If you plan a holiday in Sumba, look for hotels and other accommodation in Adalara. Adalara has rooms for a wide range of budgets as well as car hire and transport links.

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