
Surf Forecasts:
Bawa surf forecast from 11 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 10PM (local time) - 5.5ft (1.7m), 19s period, SSW swell with glassy winds.
- Most powerful swell: Wednesday 19 Aug, 1AM (local time) - 8ft (2.5m), 19s period, SSW swell with 4,539 kJ wave energy.
- Next surfable swell (1★+): Thursday 13 Aug, 4AM (local time) - 5.5ft (1.7m), 16s period with S 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 Thursday (Aug 13) at 4AM. The primary swell is predicted to be 1.7m and 16s period with a secondary swell of 0.5m and 20s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Bawa in the next 16 days are 2.5m 19s and forecast to arrive on Wednesday (Aug 19) at 1AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Sunday (Aug 16) at 1PM.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Thu 13th Aug) | 5.5ft (1.7m) 16s |
| Best Surf | 10PM (Tue 18th Aug) | 5.5ft (1.7m) 19s |
| Most Powerful | 1AM (Wed 19th Aug) | 8ft (2.5m) 19s |
Table - best surf conditions forecast for Bawa over the next 16 days.
The Lowdown
Alright, let’s have a look at what’s on the menu for Bawa over the next couple of weeks.
This is a reef and point set-up that’s very consistent and exposed to the south-west swell window. The water temp is sitting around 86°F with the anomaly being only 1°F – so about average for this time of year, nothing unusual.
The first few days are a bit of a mixed bag. Tuesday afternoon the 11th we’ve got a 7ft south swell with a long 18-second period, but the wind is light onshore and the overall energy is pumping (3406). The conditions are a bit marginal though, so it’s not the pick of the week.
Things start to shape up Thursday morning the 13th – the swell drops a touch to 6ft from the south, period at 15 seconds, but the wind goes glassy. That’s a big bonus. The combined energy is still solid (1642). This is a good window for experienced surfers, nice and clean.
Friday morning the 14th looks even better – 6ft south swell, 17-second period, light offshore breeze from the north, and the energy is well up (2144). Clean conditions, great shape potential. That’s a standout morning.
Saturday the 15th keeps it going with 5ft south swell, 14-second period, and glassy winds in the morning. The energy is moderate (1661). The afternoon holds glassy conditions too, with a 5ft swell. Another solid day.
Sunday the 16th the swell drops to 3ft–4ft, period around 13–14 seconds, energy drops back to 868–1028. The wind is cross or cross-onshore, so it’s a bit messy. Not the best.
Monday the 17th sees a smaller SW swell at 3ft, 15-second period, with light offshore or cross-off winds. The energy is low (645–548), but the wind is clean. Good for a smaller board or a longboard if you’re after something cruisy.
Then we get a pulse. Tuesday the 18th brings a 5ft SSW swell, 17-second period, but the wind is cross-shore and a bit lumpy. Energy is strong (2646). Wednesday the 19th is the real standout of this run – 8ft–8ft SSW swell, 18-second period, and Wednesday afternoon the wind goes glassy. The energy is massive (4083). That’s a heavy groundswell, very long period, so it’s going to be proper. This is one for the experts only – over 8ft. The reef and point will handle it better than a beach break, so the shape should be there. Keep an eye on this one.
Thursday the 20th holds strong with 8ft–8ft SSW swell, 16-second period, and Thursday afternoon turns glassy again with calm winds. Energy is still huge (3091). Another excellent session for advanced surfers.
The end of the run into the 21st through the 23rd stays solid but the wind is mostly cross-on or onshore. The 23rd has a very long 22-second period SSW swell at 5ft, energy is high (3149), but the wind is cross-on. Still worth a look for the swell quality.
Into the 24th and beyond, the swell holds around 6ft–8ft but the wind is onshore or cross-on, so it’s more of a marginal proposition. The 26th fades to 5ft with light onshore winds.
The best of the best: Thursday morning the 13th for clean glassy conditions and a solid 6ft south swell, Friday morning the 14th for offshore winds and a powerful 6ft south swell, and Wednesday afternoon the 19th for a massive 8ft SSW groundswell with glassy conditions – that’s the big one for experienced surfers.
Rusty.
Short Range ForecastHeavy rain (total 26mm), heaviest during Tue night. Warm (max 28°C on Tue afternoon, min 26°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 29mm), heaviest during Sat night. Warm (max 27°C on Fri night, min 25°C on Sun morning). Wind will be generally light. | |||||||||||||||||||
Tue 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | ||||||||||||||
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) | S 18 | S 17 | S 17 | S 16 | S 16 | S 15 | S 15 | S 19 | S 17 | S 16 | S 15 | S 14 | S 14 | S 13 | S 13 | S 14 | SW 15 | SW 15 | SW 14 | SSW 18 |
Wave Graph | ||||||||||||||||||||
2936 | 2900 | 2559 | 1811 | 1630 | 1280 | 1241 | 1526 | 1643 | 1438 | 1571 | 1012 | 840 | 663 | 356 | 613 | 324 | 309 | 301 | 1131 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross-on | on | glassy | on | cross-on | off | cross-off | cross-off | glassy | glassy | cross | cross-on | cross | cross-off | cross-off | off | glassy |
High Tide | 5:16PM0.46m | 5:32AM0.86m | 6:01PM0.54m | 6:15AM0.88m | 6:41PM0.61m | 6:54AM0.88m | 7:20PM0.67m | 7:30AM0.84m | 7:57PM0.70m | 8:04AM0.77m | 8:33PM0.72m | 8:35AM0.68m | 9:10PM0.70m | |||||||
Low Tide | 10:45PM0.08m | 12:20PM0.03m | 11:37PM0.05m | 12:52PM0.01m | 00:23AM0.03m | 1:22PM0.01m | 1:07AM0.04m | 1:49PM0.02m | 1:48AM0.07m | 2:15PM0.03m | 2:28AM0.11m | 2:39PM0.05m | 3:07AM0.17m | |||||||
— | — | 6:31 | — | — | 6:31 | — | — | 6:31 | — | — | 6:31 | — | — | 6:30 | — | — | 6:30 | — | — | |
6:39 | — | — | 6:39 | — | — | 6:38 | — | — | 6:38 | — | — | 6:38 | — | — | 6:38 | — | — | 6:38 | — | |
mm | — | 6 | 1 | — | 7 | 5 | — | 4 | 3 | 5 | 3 | — | 1 | 12 | 8 | — | — | — | — | — |
Temp °C | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 26 | 26 | 27 | 27 | 27 | 27 | 25 | 26 | 26 | 27 | 27 | 27 |
Feels °C | 31 | 32 | 31 | 32 | 32 | 32 | 32 | 31 | 29 | 27 | 31 | 31 | 31 | 31 | 28 | 29 | 29 | 29 | 30 | 31 |
Swell 1 Height (m) Direction Period (s) | S 18 | S 17 | S 17 | S 16 | S 16 | S 15 | S 15 | S 19 | S 17 | S 16 | S 15 | S 14 | S 14 | S 13 | S 13 | S 14 | S 13 | S 13 | SW 14 | SSW 18 |
2936 | 2900 | 2559 | 1811 | 1630 | 1280 | 1241 | 1526 | 1643 | 1438 | 1571 | 1012 | 840 | 663 | 356 | 613 | 324 | 256 | 301 | 1131 | |
Swell 2 Height (m) Direction Period (s) | S 12 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | S 19 | S 20 | S 11 | S 10 | S 11 | SW 16 | SW 17 | SW 16 | SW 15 | SSE 10 | SW 15 | SW 15 | SW 15 | S 12 | SW 13 |
432 | 38 | 24 | 20 | 22 | 351 | 373 | 459 | 313 | 269 | 155 | 405 | 376 | 326 | 157 | 262 | 309 | 309 | 171 | 215 | |
Swell 3 Height (m) Direction Period (s) | WNW 8 | W 11 | SSW 13 | WNW 10 | S 20 | WNW 8 | S 18 | SW 15 | SW 15 | SW 15 | SSW 19 | S 19 | S 18 | S 18 | SW 15 | WNW 10 | W 8 | WNW 8 | WNW 8 | WNW 8 |
38 | 10 | 17 | 9 | 124 | 11 | 227 | 223 | 188 | 75 | 148 | 244 | 161 | 219 | 276 | 10 | 113 | 80 | 76 | 65 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WNW 8 | W 6 | — | NE 3 | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | 79 | 143 | — | 5 | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 15 | 15 | 15 | 15 | 15 | 0 | 15 | 15 | 0 | 50 | 0 | 0 | 0 | 50 | 50 | 15 | 0 | 0 | 0 | 0 |
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.











