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Surf Forecasts:

Wanjapu surfForecast / Sumba / Indonesia

information circle12 Day Weather and Surf, issued 1 pm Sunday 14 Sep 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
27.2° C
 (Which is normal for this time of year)

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 Monday (Sep 15) at 2AM. The primary swell is predicted to be 1.5m and 14s period with a secondary swell of 0.9m and 6s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Wanjapu in the next 12 days are 2.5m 16s and forecast to arrive on Wednesday (Sep 17) at 8AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Monday (Sep 15) at 2AM.

Wave TypeTime (WITA) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Mon 15th Sep)5ft (1.5m) 14s
Best Surf 8AM (Thu 18th Sep)7ft (2.1m) 14s
Most Powerful 8AM (Wed 17th Sep)8ft (2.5m) 16s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Light rain (total 2mm), mostly falling on Sun afternoon. Warm (max 27°C on Sun afternoon, min 25°C on Sun night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 27°C on Thu afternoon, min 25°C on Wed night). Wind will be generally light.

Sun
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
2
3
1
0
1
1
1
2
3
2
2
2
2
4
2
1
3
2
2
3
2
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.6
SW
1.5
SW
1.3
SW
1.3
SW
1.3
SW
1.4
SW
1.4
SW
2.3
SW
2.5
SW
2.5
SSW
2.2
SW
2
SSW
1.9
SSW
1.7
SW
1.6
SSW
0.9
SW
0.9
SW
1.2
SW
1.4
SW
1.9
SSW
2.2
SW
Period(s) (?)141414141414141615151414141312151616171716
Wave
Graph
(?)Metric surfscale
Energy kJ (?)1006886726736686725715262729622691203216441272996771325395729101220412291
Wind
(km/h)
20
SE
15
ESE
15
SSE
25
SE
15
SE
20
SSE
25
SE
20
SE
10
SSE
20
SE
15
SE
10
SSE
15
SSE
10
E
15
SSE
25
SE
15
ESE
5
WSW
20
SE
10
SE
10
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
off		crosscrosscrosscrosscrosscrosscrosscrosscrosscross-
on		crosscross-
off		crosscrosscross-
off		oncrosscrosscross-
on
High Tide
/ height (m)
2:08PM
1.98
2:12AM
2.64
3:03PM
1.67
3:07AM
2.33
5:39PM
1.48
5:11AM
2.08
8:36PM
1.70
7:35AM
2.14
9:14PM
1.99
8:45AM
2.34
9:41PM
2.26
9:31AM
2.52
10:06PM
2.50
10:06AM
2.65
Low Tide
/ height (m)
7:42PM
0.84
9:11AM
0.74
8:15PM
1.11
10:48AM
0.99
9:07PM
1.39
1:39PM
0.95
1:25AM
1.45
2:47PM
0.75
2:49AM
1.16
3:25PM
0.57
3:32AM
0.88
3:55PM
0.44
4:06AM
0.62
Sun
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunrise--5:58--5:56--5:56--5:56--5:54--5:54--5:54
Sunset6:00--6:00--6:00--6:00--6:00--6:00--6:00--
rain showers
rain showers
clear
clear
clear
clear
clear
part cloud
clear
part cloud
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
Rain (mm)
11-------------------
Temp. °C272727272627272627262626272627272626272627
Feels °C (?)282828262528262529272628292629282729292729
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

Eyeball surf reportRecent Eyeball Surf Reports for Sumba

  1. weather stationWind Update The wind is still cross-on at Wanjapu (moderate winds from the S at BimaM.salahuddin 128 km from Wanjapu). 1.3m 15s groundswell from the SW with a 1.1m 6s windswell from the SSE. 2 swells combining to make bigger set waves.

    3 hours 31 minutes ago Wanjapu
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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 Wanjapu 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.

View detailed surf forecast for Wanjapu at:
surf-forecast.com

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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