Boa surfForecast / Timor / Indonesia

information circle12 Day Weather and Surf, issued 1 am Monday 15 Dec 2025 WITA
Forecast update in hr  min  s Forecast update imminent
Boa surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Boa sea temperature is
30.4° C
(Which is slightly warmer than usual)


Best Forecast Surf Conditions for Boa this week:

The surf forecast for Boa over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Dec 15) at 8PM. The primary swell is predicted to be 0.8m and 12s period with a secondary swell of 0.3m and 6s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Boa in the next 12 days are 1.0m 16s and forecast to arrive on Thursday (Dec 18) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives.

Wave TypeTime (WITA) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Mon 15th Dec)2.5ft (0.8m) 12s
Best Surf 8AM (Wed 17th Dec)2.5ft (0.7m) 13s
Most Powerful 8PM (Thu 18th Dec)3.5ft (1.0m) 16s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Light rain (total 8mm), mostly falling on Wed night. Warm (max 29°C on Mon morning, min 26°C on Wed night). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 23mm), heaviest during Sat night. Warm (max 29°C on Thu afternoon, min 27°C on Thu morning). Wind will be generally light.

Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
1
1
0
1
1
2
1
2
1
1
2
1
2
1
1
1
1
0
1
Swell
Height Map
Wave Height (m) & direction (?)
0.8
SW
0.8
SW
0.8
SW
0.7
SW
0.7
SW
0.6
SW
0.7
SW
0.6
SW
0.7
SW
0.7
SW
0.8
SW
1
SW
1
SW
1
SW
0.9
SW
0.8
SW
0.9
SW
0.9
SW
0.8
SW
0.8
SW
0.8
SW
Period(s) (?)121212121111121616151615141413131312121211
Wave
Graph
(?)Metric surfscale
Energy kJ (?)20019719313012199137165264227295427404393295239273236193190177
Wind
(km/h)
5
SW
5
SW
5
W
10
W
5
SW
10
WNW
5
SSE
5
SSW
10
WSW
10
W
10
WSW
15
SW
10
W
15
W
10
WNW
20
WNW
20
WNW
20
WNW
20
NW
15
WNW
15
NW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
on
cross-
off
cross-
off
crosscross-
off
glassglasscrosscross-
off
crosscrosscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
cross-
off
High Tide
/ height (m)
7:28PM
2.51
8:45AM
1.98
8:18PM
2.60
9:35AM
2.10
9:00PM
2.70
10:15AM
2.21
9:39PM
2.81
10:49AM
2.31
10:15PM
2.91
11:21AM
2.38
10:50PM
3.00
11:53AM
2.45
11:23PM
3.05
Low Tide
/ height (m)
12:47PM
1.33
2:32AM
0.93
1:55PM
1.34
3:17AM
0.73
2:49PM
1.28
3:55AM
0.55
3:32PM
1.20
4:29AM
0.40
4:10PM
1.12
5:03AM
0.28
4:46PM
1.04
5:35AM
0.21
5:20PM
0.99
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Sunrise5:20--5:20--5:20--5:20--5:22--5:22--5:22--
Sunset-6:06--6:06--6:07--6:07--6:07--6:07--6:08-
clear
clear
thunderstorm
clear
part cloud
part cloud
part cloud
thunderstorm
rain showers
part cloud
thunderstorm
thunderstorm
thunderstorm
clear
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
Rain (mm)
--1----16-151-4-39225
Temp. °C292929292929292929282928292929292929292929
Feels °C (?)333334323233343333303131323132303031313132
  • Map Icons:
  • Break
  • 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 Boa Surf forecast

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

Are you planning a holiday in Timor? If you are looking for accommodation near Boa, camping, hotels and holiday cottages in Timor, consider staying in Kupang which is 104 km (65 miles) away.

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