Reef
right
Level 6/10

Boa

Rote Island, Indonesia
🪸Sharp reef

Boa is a quality right reef break on Rote Island that produces standout barrel sessions when conditions align. The key to scoring Boa is timing—it needs a specific combination of swell direction and tide to fire, making a local surf guide invaluable. When it's on, Boa delivers multiple barrel opportunities per wave, rivaling any right-hander in the eastern Indonesian archipelago.

Boa surf forecast

Model forecast for swell, wind and tide.

10-Day Forecast
Today20
54
Fair
1.1m@17s
20km/h
Mon21
80
Firing
1.7m@16s
20km/h
Tue22
74
Good
1.4m@14s
18km/h
Wed23
72
Good
1.2m@15s
18km/h
Thu24
69
Good
1.3m@15s
20km/h
Fri25
44
Poor
1.0m@14s
21km/h
Sat26
44
Poor
0.9m@15s
16km/h
Sun27
74
Good
1.5m@18s
17km/h
Mon28
74
Good
1.5m@17s
19km/h
Tue29
73
Good
1.3m@16s
20km/h
Groomed 5+ days out, less certain

Today's Conditions

Find Flights
Best session: AfternoonAM 19 km/h · PM 18 km/h
Groomed
Clean faces from offshore winds
Swell
1.1m
SW(235°)
Score: 5/25
Period
17s
Long period groundswell
Score: 23/25
Wind
20km/h
E(94°)
Score: 22/25
Weather
29°C
0.1mm16%
First light 5:09amSunrise 5:39amSunset 5:44pmLast light 6:14pm
Windswell0.5m@3sSecondary0.4mConfidence
100%

Location & Conditions

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

Hourly Forecast, Tide & Strike Windows

No ideal tide during daylight todayIdeal tide: 0.3–1.2m
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
6am
9am
12pm
3pm
6pm
°C
25°
30°
31°
29°
27°
25°
30°
30°
29°
26°
25°
30°
31°
30°
27°
25°
31°
31°
30°
27°
26°
30°
32°
30°
28°
26°
30°
32°
30°
28°
27°
29°
31°
31°
29°
28°
30°
32°
32°
28°
28°
30°
31°
31°
28°
28°
29°
30°
30°
28°
2m1.0
sec
17s
17s
17s
17s
17s
16s
16s
16s
16s
16s
14s
14s
14s
14s
14s
15s
15s
15s
15s
15s
15s
15s
15s
15s
15s
14s
14s
14s
14s
14s
15s
15s
15s
15s
15s
18s
18s
18s
18s
18s
17s
17s
17s
17s
17s
16s
16s
16s
16s
16s
swell
windkm/h
17g29
21g43
21g45
18g41
19g37
11g22
19g39
24g50
23g48
21g43
10g18
16g35
22g45
22g47
19g39
13g22
15g32
22g45
19g40
19g36
14g29
16g34
20g44
24g50
24g48
12g28
19g38
23g48
24g49
24g49
15g31
15g31
16g36
18g39
19g40
18g35
17g35
16g37
16g39
18g41
19g38
20g41
18g44
18g45
18g43
15g32
16g35
22g46
24g52
23g51
tidem
2:16am2.4m
9:52am1.3m
4:15pm1.7m
3:30am2.2m
12:30pm1.4m
9:15pm1.9m
6:30am2.1m
2:12pm1.2m
9:06pm2.2m
2:22am1.6m
8:06am2.3m
2:46pm1.0m
9:18pm2.4m
2:58am1.3m
8:54am2.6m
3:15pm0.8m
9:35pm2.6m
3:27am0.9m
9:27am2.8m
3:40pm0.6m
9:52pm2.9m
3:56am0.6m
10:02am2.9m
4:06pm0.5m
10:15pm3.1m
4:25am0.3m
10:31am3.0m
4:33pm0.4m
4:56am0.1m
11:04am3.1m
4:59pm0.4m
5:27am0.0m
Ideal tideStrike windowNight

Tide times today

2:16 am
High tide - 2.39m
9:52 am
Low tide - 1.26m
4:15 pm
High tide - 1.69m
7:00 pm
Low tide - 1.61m
Times shown in spot-local time.

Strike Score Breakdown

54
Fair
Components
Swell Direction9/25
Swell Size5/25
Swell Period23/25
Wind22/25
Raw Score59/100
Adjustments
Wind History+6
🌊💨 Windswell-3
🌊 Tide-3
💨 Gusty Wind-5
🚫 Undersized Capmax 64
Adjusted Score54/100
Confidence
Multiplier×1.00
Final Score54
✨ Groomed🌊 Too high for this tide window

Plan Your Strike

Return flights to RTI, departing today with a 5-day trip window.

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Swell Requirements

Optimal direction
SSW (205°)
Direction range
190° - 220°
Size range
1.2m - 2.4m
Ideal size
1.7m - 2.1m
Height multiplier
0.97×
Ideal period
14s+

Wind Requirements

Optimal direction
ESE (112°)
Offshore range
82° - 142°

Tide Requirements

Optimal tide
low to mid
Optimal range
0.3m - 1.2m

Water temp

28°C

Wetsuit

Boardshorts / Rashguard

Difficulty

6/10

Crowd level

4/10

Access: Fly via Kupang or ferry from Kupang

Frequently Asked Questions

What tide is best at Boa?

The Boa profile favors low to mid tide, ideally between 0.3m and 1.2m on the local tide chart. Compare this preference with the forecast tide and local conditions before choosing a session.

What wind direction is offshore at Boa?

The Boa profile uses wind from ESE (112°) as its preferred direction, with an offshore range of 82° to 142°. Wind speed matters too: light winds outside that range can still produce surfable conditions, while strong offshore winds can make takeoffs difficult.

What swell size and direction work best at Boa?

The Boa scoring profile favors swell from SSW (190° to 220°), a swell-height range of 1.2m to 2.4m, and a reference period of 14s. These are model inputs, not guaranteed breaking-wave heights or a promise that the surf will suit every ability.

When is the best time of year to surf Boa?

The main season at Boa is Apr-Oct. A secondary window runs Nov, Dec, Jan, Feb, Mar. Best Apr-Oct (dry season, SE trades offshore). Swells year-round but wet season brings onshore winds.

How do I get to Boa?

The spot profile lists RTI as a nearby airport. The estimated road transfer is 20 minutes. Fly via Kupang or ferry from Kupang

What kind of wave is Boa?

Boa is a reef break, a right-hander. Difficulty is rated 6/10.

Best Season

Peak: Apr-Oct

Secondary: Nov, Dec, Jan, Feb, Mar

Best Apr-Oct (dry season, SE trades offshore). Swells year-round but wet season brings onshore winds.

Getting There

Airport
RTI
Drive time
20 min
Data quality
verified

Strike Log

Community Discussion