Surf Forecasts:
Boa surf forecast from 21 Sep 2026:
- Best quality surf: Thursday 24 Sep, 8AM (local time) - 4.5ft (1.3m), 15s period, SW swell with cross-offshore winds.
- Most powerful swell: Sunday 27 Sep, 2PM (local time) - 5ft (1.5m), 18s period, SW swell with 1,404 kJ wave energy.
- Next surfable swell (1★+): Thursday 24 Sep, 8AM (local time) - 4.5ft (1.3m), 15s period with SW swell.
Best Forecast Surf Conditions for Boa this week:
The surf forecast for Boa over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 24) at 8AM. The primary swell is predicted to be 1.3m and 15s period with a secondary swell of 0.7m and 5s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Boa in the next 16 days are 1.5m 18s and forecast to arrive on Sunday (Sep 27) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 8s period and expected on Monday (Sep 21) at 2PM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Thu 24th Sep) | 4.5ft (1.3m) 15s |
| Best Surf | 8AM (Thu 24th Sep) | 4.5ft (1.3m) 15s |
| Most Powerful | 2PM (Sun 27th Sep) | 5ft (1.5m) 18s |
Table - best surf conditions forecast for Boa over the next 16 days.
Short Range ForecastMostly dry. Warm (max 27°C on Mon morning, min 25°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Thu afternoon, min 25°C on Thu night). Winds decreasing (fresh winds from the E on Thu night, calm by Sat morning). | ||||||||||||||||||||
Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | Saturday 26 | Sunday 27 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SW 15 | SW 15 | SW 14 | SW 13 | SW 13 | SW 13 | SW 17 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 20 | SW 19 | SW 18 | SW 17 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1279 | 1108 | 874 | 637 | 488 | 363 | 358 | 823 | 783 | 686 | 528 | 513 | 345 | 345 | 345 | 305 | 300 | 488 | 800 | 1358 | 1252 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross-on | cross-on | cross | glassy | cross | cross |
High Tide | 10:04PM1.84m | 7:37AM2.08m | 9:39PM2.08m | 8:46AM2.31m | 9:50PM2.34m | 9:26AM2.56m | 10:07PM2.60m | 9:59AM2.77m | 10:26PM2.85m | 10:31AM2.93m | 10:47PM3.07m | 11:01AM3.03m | 11:10PM3.26m | ||||||||
Low Tide | 2:01PM1.25m | 1:55AM1.75m | 2:58PM1.02m | 3:02AM1.48m | 3:26PM0.81m | 3:33AM1.18m | 3:51PM0.63m | 4:01AM0.88m | 4:14PM0.49m | 4:28AM0.58m | 4:38PM0.39m | 4:56AM0.32m | 5:02PM0.34m | ||||||||
 | |  | | | | | | | | | | | | | | | | | | | |
 | 5:39 | — | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | 5:35 | — | — | 5:35 | — | — | 5:35 | — | — |
 | — | 5:44 | — | — | 5:44 | — | — | 5:44 | — | — | 5:44 | — | — | 5:44 | — | — | 5:44 | — | — | 5:44 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 26 | 26 | 27 | 26 | 26 | 27 | 26 | 26 | 27 | 26 | 26 | 27 | 26 | 26 | 27 | 26 | 26 | 27 | 26 |
Feels °C | 27 | 27 | 26 | 27 | 27 | 27 | 28 | 27 | 27 | 28 | 27 | 26 | 27 | 28 | 27 | 29 | 28 | 27 | 27 | 29 | 27 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 15 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 14 | SW 19 | SW 18 | SW 17 |
| kJ | 1279 | 1108 | 874 | 637 | 488 | 363 | 315 | 823 | 783 | 686 | 528 | 513 | 345 | 345 | 345 | 305 | 300 | 341 | 800 | 1358 | 1252 |
Swell 2 Height (m) Direction Period (s) | — | — | — | SW 20 | SW 20 | SW 18 | SW 17 | SW 13 | — | — | W 19 | — | — | — | SW 26 | SW 24 | SW 22 | SW 20 | SW 14 | — | — |
| kJ | — | — | — | 15 | 16 | 114 | 358 | 231 | — | — | 7 | — | — | — | 26 | 87 | 235 | 488 | 285 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | E 7 | — | — | — | — | — | — | — | — | — | — | — | SW 8 | E 5 | — | — |
| kJ | — | — | — | — | — | 15 | — | — | — | — | — | — | — | — | — | — | — | 22 | 25 | — | — |
Wind waves Height (m) Direction Period (s) | E 8 | E 5 | E 5 | E 7 | ESE 4 | E 4 | E 7 | E 4 | E 5 | E 4 | E 5 | E 6 | E 5 | E 5 | E 5 | E 7 | E 7 | E 4 | ENE 5 | E 7 | E 5 |
| kJ | 122 | 54 | 54 | 54 | 28 | 14 | 45 | 33 | 35 | 25 | 62 | 75 | 33 | 48 | 41 | 33 | 45 | 29 | 33 | 32 | 43 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 3 | 131 | 3 | 27 | 125 | 3 | 5 | 545 | 179 | 3 | 125 | 5 | 3 | 125 | 5 | 3 | 3 | 336 | 0 | 3 | 179 |
Best forecast wave conditions in Timor | |||||||||||||||||||||
Best forecast wave conditions in Indonesia | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Boa 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.
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 16 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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