Reef
both
Level 8/10

Sebatu

South Nias, Indonesia
🪸Sharp reef😮‍💨Hold-downs

Sebatu sits outside Lagundri Bay in South Nias, facing the full Indian Ocean swell window and producing serious big-wave conditions. The wave is for committed big-wave chargers only, with heavy, hollow faces that can exceed 15 feet. Its open-ocean exposure means it picks up every swell that the bay misses, offering a completely different challenge to the point breaks inside Lagundri.

10-Day Forecast
Today
21
61
Fair
2.1m
@15s
11km/h
Mon
22
62
Fair
2.1m
@14s
3km/h
Tue
23
60
Fair
1.9m
@14s
4km/h
Wed
24
66
Good
1.7m
@15s
5km/h
Thu
25
62
Fair
1.5m
@15s
5km/h
Fri
26
44
Poor
1.2m
@15s
6km/h
Sat
27
74
Good
1.5m
@16s
3km/h
Sun
28
72
Good
2.1m
@17s
3km/h
Mon
29
60
Fair
2.3m
@16s
7km/h
Tue
30
59
Fair
2.3m
@15s
6km/h

Today's Conditions

Find Flights
Swell
2.1m
SSW(211°)
Score: 10/25
Period
15s
Long period groundswell
Score: 23/25
Wind
11km/h
WNW(293°)
Score: 11/25
Weather
26°C
0.8mm93%
Windswell Component
0.3mNW@2s
Secondary Swell
0.6mS
Forecast Confidence
100%
Sources: open-meteo-marine, open-meteo-weather
Best Session
morning
AM: 8 km/h WNW|PM: 12 km/h WNW
Similar wind — morning has better tide for this spot
High tide at 10am (0.8m)

Location & Conditions

Loading map...
0°45°90°135°180°225°270°315°NESW
Swell
Wind
View in OpenStreetMap
Showing forecast for today

Tide Times

3:50 am
Low tide - 0.34m
10:12 am
High tide - 0.80m
4:50 pm
Low tide - 0.24m
Times shown in spot-local time.

Strike Score Breakdown

61
Fair
Components
Swell Direction19/25
Swell Size10/25
Swell Period23/25
Wind11/25
Raw Score63/100
Adjustments
🌊 Tide-2
Adjusted Score61/100
Confidence
Multiplier×1.00
Final Score61
🌊 Too low for this tide window👥 Semester Break
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Spot Details

Swell Requirements

Optimal direction
SW (220°)
Direction range
180° - 260°
Size range
1.5m - 4.6m
Ideal size
3.8m
Height multiplier
1.08×
Ideal period
16s+

Wind Requirements

Optimal direction
N (0°)
Offshore range
330° - 30°

Tide Requirements

Optimal tide
high
Optimal range
1m - 2m

Water temp

28°C

Wetsuit

Boardshorts / Rashguard

Difficulty

8/10

Crowd level

5/10

👥 Semester Break (Jun 20Jul 12) — expect extra crowds

Access: Fly to Gunungsitoli via Medan, drive to south coast

Best Season

Peak: Apr-Oct

SW swell season (Apr-Oct), SE trade winds offshore

Getting There

Airport
GNS
Drive time
45 min
Data quality
verified

Strike Log

Community Discussion