Surf Forecasts:
Bawa surf forecast from 18 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 4AM (local time) - 8ft (2.5m), 19s period, SSW swell with glassy winds.
- Most powerful swell: Wednesday 19 Aug, 7PM (local time) - 10ft (3.0m), 18s period, SSW swell with 5,392 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 4AM (local time) - 8ft (2.5m), 19s period with SSW swell.
Best Forecast Surf Conditions for Bawa this week:
The surf forecast for Bawa over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 19) at 4AM. The primary swell is predicted to be 2.5m and 19s period with a secondary swell of 0.5m and 9s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Bawa in the next 16 days are 3.0m 18s and forecast to arrive on Wednesday (Aug 19) at 7PM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Wed 19th Aug) | 8ft (2.5m) 19s |
| Best Surf | 4AM (Wed 19th Aug) | 8ft (2.5m) 19s |
| Most Powerful | 7PM (Wed 19th Aug) | 10ft (3.0m) 18s |
Table - best surf conditions forecast for Bawa over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get stuck into what’s coming up at Bawa. We’ve got a solid run of south-southwest groundswell that’s going to keep the reef and point working for a good stretch. The water is sitting at 86°F, which is about average for this time of year, so no need to dig out the steamer just yet.
The standout window is Wednesday the 19th. The morning session is the pick of the entire forecast. The swell is a strong 8ft from the SSW, with a very long period of 18 seconds and a massive 4629 (combined energy of all swells directed here) of power behind it. The wind is glassy, off the south, and that’s going to deliver clean, lined-up waves for experienced surfers. This is the session to get excited about. The afternoon holds a bigger 10ft and a 5167 energy reading, but the wind swings cross-on, so it gets a bit messy.
Thursday the 20th keeps the size up at 10ft from the SSW, but the period drops a touch to 16 seconds and the wind is cross-on, so it’s a bit of a battle for shape. The energy is still very strong at 4097, but it’s not the cleanest.
We then have a bit of a lull in quality from Friday the 21st through to the start of the following week. The swell hangs around 6ft to 7ft, but the wind is consistently cross-on or onshore, and the energy drops into the 1600-2700 range. The scores are low, and the conditions are marginal. The wind gets up to 12 mph on Sunday the 23rd, making it choppy and unappealing.
The next real glimmer of hope comes on Wednesday the 27th, where the swell drops to 5ft. The energy is down to 999, but it’s a glassy morning with a 14-second period, giving a much better chance of a clean, fun wave. After that, the swell backs off further, with a standout on Sunday the 30th of August. The morning brings a 6ft SSW swell, with a 17-second period, and glassy conditions again. The energy is back up to 1872, and it’s flagged as excellent for experienced surfers. That’s a good session.
The following Monday the 31st sees a 6ft SSW swell, with a 16-second period and glassy winds all day, holding the energy at 2044 and 1987. That’s a solid day of surfing.
The final call is a bit of a big one on Tuesday, 1st September. The swell jumps to 8ft from the SSW, with a 17-second period and a massive 3301 energy reading, but the wind is cross-on, so it’s not as clean as the glassy days. The following morning, Wednesday the 2nd, is another glassy session with 6ft from the SSW, which is a worthwhile note for the start of the second week.
The best of the whole run is Wednesday the 19th morning, with that glassy, powerful groundswell. The other standout is the Sunday the 30th and Monday the 31st, offering clean, high-energy conditions. The rest of the time is a mix of size and onshore wind, so keep an eye on those glassy windows.
Rusty.
Short Range ForecastHeavy rain (total 28mm), heaviest during Tue night. Warm (max 28°C on Tue morning, min 26°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 10mm), heaviest on Fri morning. Warm (max 28°C on Fri afternoon, min 27°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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) | SSW 17 | SSW 19 | SSW 19 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 17 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 17 | SSW 16 | SSW 16 |
Wave Graph | |||||||||||||||||||||
1238 | 3441 | 2812 | 4523 | 5037 | 5209 | 4006 | 3304 | 2648 | 2144 | 1787 | 3105 | 2503 | 2258 | 1690 | 1083 | 1179 | 880 | 2357 | 844 | 2018 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | glassy | cross-on | on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | on | on | cross-on | on | on | cross-on | on | on |
High Tide | 9:48PM0.67m | 9:29AM0.50m | 10:30PM0.62m | 9:51AM0.41m | 11:26PM0.56m | 10:03AM0.34m | 00:55AM0.53m | 12:10PM0.28m | 2:41AM0.54m | 3:34PM0.30m | 3:50AM0.59m | 4:31PM0.35m | |||||||||
Low Tide | 3:03PM0.08m | 3:49AM0.22m | 3:27PM0.11m | 4:39AM0.27m | 3:54PM0.14m | 6:06AM0.31m | 4:29PM0.18m | 11:24AM0.28m | 5:37PM0.22m | 11:02AM0.23m | 8:03PM0.23m | 11:16AM0.18m | 9:32PM0.20m | ||||||||
6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | |
— | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | |
mm | 2 | 2 | 8 | 2 | — | 3 | 2 | 1 | 8 | 2 | — | — | 2 | 2 | 2 | 1 | — | 1 | 2 | 3 | 6 |
Temp °C | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 28 | 28 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 |
Feels °C | 32 | 32 | 32 | 33 | 31 | 31 | 31 | 31 | 30 | 30 | 31 | 32 | 30 | 31 | 31 | 30 | 30 | 30 | 31 | 31 | 29 |
Swell 1 Height (m) Direction Period (s) | SSW 17 | SSW 19 | SSW 19 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 17 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 17 | SSW 13 | SSW 16 |
1238 | 3441 | 2812 | 4523 | 5037 | 5209 | 4006 | 3304 | 2648 | 2144 | 1787 | 3105 | 2503 | 2258 | 1690 | 1083 | 1179 | 880 | 2357 | 735 | 2018 | |
Swell 2 Height (m) Direction Period (s) | SSW 21 | WNW 8 | SSW 16 | W 8 | W 9 | W 8 | W 8 | W 10 | W 8 | S 20 | S 19 | W 8 | W 9 | WNW 9 | W 8 | S 21 | SSW 19 | SSW 18 | WNW 8 | SSW 16 | WNW 8 |
1176 | 48 | 1361 | 29 | 55 | 34 | 30 | 65 | 50 | 284 | 904 | 36 | 38 | 45 | 48 | 332 | 627 | 670 | 23 | 844 | 36 | |
Swell 3 Height (m) Direction Period (s) | SSW 13 | WSW 22 | WNW 8 | WSW 20 | WSW 20 | — | WSW 18 | WNW 10 | WSW 17 | W 7 | W 9 | WSW 16 | W 15 | S 26 | SSW 24 | S 18 | WNW 8 | WNW 8 | WNW 10 | SSW 20 | — |
277 | 47 | 49 | 77 | 75 | — | 61 | 18 | 58 | 28 | 57 | 25 | 5 | 13 | 108 | 156 | 19 | 36 | 10 | 216 | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 5 | — | — | — | — | S 7 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 47 | — | — | — | — | 77 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 15 | 15 | 15 | 0 | 37 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 138 | 15 | 138 | 15 | 15 | 15 | 138 |
Best forecast wave conditions in Nias | |||||||||||||||||||||
Best forecast wave conditions in Indonesia | |||||||||||||||||||||
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Information about the Bawa Surf forecast
The above surf forecast table for Bawa provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Bawa can be found by selecting the local surf guide option on the grey menu. Our Bawa 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 (Bawa) 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 Bawa 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 Nias? If you are looking for accommodation near Bawa, camping, hotels and holiday cottages in Nias, consider staying in Afia which is 67 km (42 miles) away.











