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.

10-Day Forecast
Today6
65
Good
1.2m@17s
23km/h
Fri7
71
Good
1.4m@16s
20km/h
Sat8
73
Good
1.6m@16s
19km/h
Sun9
74
Good
1.5m@16s
16km/h
Mon10
67
Good
1.4m@15s
11km/h
Tue11
85
Firing
1.9m@16s
16km/h
Wed12
72
Good
1.3m@15s
18km/h
Thu13
65
Good
1.4m@17s
21km/h
Fri14
65
Good
1.2m@16s
25km/h
Sat15
30
Poor
0.8m@15s
19km/h
Groomed 5+ days out, less certain

Today's Conditions

Find Flights
Best session: MorningAM 20 km/h · PM 23 km/h · Low tide at 8am (0.7m)
Groomed
Clean faces from offshore winds
Swell
1.2m
SW(228°)
Score: 8/25
Period
17s
Long period groundswell
Score: 23/25
Wind
23km/h
ESE(105°)
Score: 20/25
Weather
28°C
0.0mm35%
First light 5:34amSunrise 6:04amSunset 5:44pmLast light 6:14pm
Windswell0.7m@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

Strike window: 6:41–10:56am · through lowIdeal 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
24°
28°
30°
28°
26°
24°
28°
29°
29°
26°
24°
28°
30°
28°
25°
23°
27°
29°
28°
25°
23°
27°
30°
29°
26°
24°
27°
28°
28°
26°
26°
27°
29°
29°
27°
27°
28°
30°
30°
28°
27°
28°
29°
29°
27°
26°
27°
29°
29°
26°
2m1.0
sec
17s
17s
17s
17s
17s
16s
16s
16s
16s
16s
16s
16s
16s
16s
16s
16s
16s
16s
16s
16s
15s
15s
15s
15s
15s
16s
16s
16s
16s
16s
15s
15s
15s
15s
15s
17s
17s
17s
17s
17s
16s
16s
16s
16s
16s
15s
15s
15s
15s
15s
swell
windkm/h
18g33
22g43
25g50
23g49
23g44
17g31
20g40
22g45
22g45
21g42
14g25
18g37
19g41
21g43
19g39
12g21
16g34
18g39
19g42
14g39
10g18
13g29
7g28
8g27
16g33
11g21
14g31
18g39
18g42
17g41
15g29
16g33
20g40
21g45
20g45
19g36
19g38
22g44
23g48
22g48
21g41
24g46
26g53
26g57
23g56
16g33
17g35
21g44
22g49
18g48
tidem
2:13am2.9m
8:48am0.7m
2:41pm2.2m
8:20pm0.9m
2:52am2.8m
9:48am0.8m
3:38pm1.9m
8:55pm1.2m
3:46am2.6m
11:16am1.0m
5:22pm1.7m
10:00pm1.4m
5:16am2.5m
1:15pm0.9m
8:18pm1.8m
12:35am1.5m
7:10am2.6m
2:45pm0.6m
9:30pm2.0m
2:18am1.3m
8:35am2.8m
3:35pm0.3m
10:03pm2.3m
3:24am1.0m
9:34am3.0m
4:16pm0.2m
4:14am0.7m
10:20am3.2m
4:52pm0.0m
4:55am0.5m
11:02am3.2m
5:22pm0.0m
5:33am0.3m
Ideal tideStrike windowNight

Tide times today

2:13 am
High tide - 2.90m
8:48 am
Low tide - 0.72m
2:41 pm
High tide - 2.22m
8:20 pm
Low tide - 0.93m
Times shown in spot-local time.

Strike Score Breakdown

65
Good
Components
Swell Direction12/25
Swell Size8/25
Swell Period23/25
Wind20/25
Raw Score63/100
Adjustments
Wind History+6
🌊💨 Windswell-3
🌊 Tide+3
💨 Gusty Wind-4
Adjusted Score65/100
Confidence
Multiplier×1.00
Final Score65
✨ Groomed🌊 Mostly in the 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
2.0m
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?

Boa works best on a low to mid tide, ideally between 0.3m and 1.2m on the local tide chart. The tide chart above shows today’s strike window.

What wind direction is offshore at Boa?

Offshore wind at Boa blows from the ESE (112°). Anything in the 82° to 142° range grooms the faces; outside it, expect chop or bumpy conditions.

What swell size and direction work best at Boa?

Boa wants SSW swell (190° to 220°) between 1.2m and 2.4m, with a period of 14s or more for quality waves.

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?

Fly into RTI, then allow about 20 minutes by road. 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