
Surf Forecasts:
Bawa surf forecast from 15 Sep 2026:
- Best quality surf: Saturday 19 Sep, 7AM (local time) - 4.5ft (1.3m), 14s period, SSW swell with cross-offshore winds.
- Most powerful swell: Saturday 19 Sep, 7PM (local time) - 6.5ft (2.0m), 17s period, SSW swell with 2,351 kJ wave energy.
- Next surfable swell (1★+): Saturday 19 Sep, 7AM (local time) - 4.5ft (1.3m), 14s 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 Saturday (Sep 19) at 7AM. The primary swell is predicted to be 1.3m and 14s period with a secondary swell of 1.0m and 18s. Another secondary swell of 0.6m and 7s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Bawa in the next 16 days are 2.0m 17s and forecast to arrive on Saturday (Sep 19) at 7PM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Sat 19th Sep) | 4.5ft (1.3m) 14s |
| Best Surf | 7AM (Sat 19th Sep) | 4.5ft (1.3m) 14s |
| Most Powerful | 7PM (Sat 19th Sep) | 6.5ft (2.0m) 17s |
Table - best surf conditions forecast for Bawa over the next 16 days.
The Lowdown
Alright, let’s swap over to feet, Fahrenheit, and miles per hour for the imperial crew.
This 16-day stretch is all about Bawa, a reef and point break that is very consistent and loves a solid SW groundswell. The water temp is hangin’ around 86°F, which is about 2°F above normal – just a little warmer than usual, comfortable.
The first surf worth paddling out for doesn’t really show up until Tuesday the 15th, and it’s a tough start. Tuesday morning brings 6ft from the SSW with a 15-second period, but the wind is a cross-on from the SE at 3 mph – not ideal. The energy reading is 1629 (moderate-to-strong), but the quality is marked marginal. Tuesday afternoon and all of Wednesday and Thursday are plagued by thunderstorm risks and onshore winds from the SSE to S at 9 to 12 mph. Swell sizes run 5ft to 6ft, with periods of 14-17 seconds, but chop and onshore wind kill it.
Friday the 18th and Saturday the 19th are still messy, though Saturday afternoon shows a 6ft SW swell with a 17-second period and a big energy jump to 2305. The wind is cross-on from the SE at 6 mph, so still not clean.
Sunday the 20th morning is a turning point: 7ft from the SSW, 16-second period, with a light cross-shore from the ESE at 6 mph. The energy is high at 2227. It’s still rated marginal, but the conditions are much better. For an advanced spot like Bawa, this is a solid session.
Monday the 21st is similar – 6ft SSW swell, 14-second period, light cross-on from the SE at 3 mph. Then Tuesday the 22nd morning is a beauty: the swell drops to 3ft from the SW with a 13-second period, and the wind goes glassy – dead calm from the S at 3 mph. Expect very good surf conditions. That’s a clean, fun morning.
The rest of the week goes south again with thunderstorms, onshore wind, and poor conditions through the 24th and 25th.
Then we see the big one. Saturday the 26th afternoon: a 7ft SSW swell with a very long 21-second period, energy roaring at 4521 (very strong). The wind is onshore from the S at 9 mph, so marginal. But Sunday the 27th morning is the absolute standout: 8ft from the SSW, 18-second period, and glassy calm from the ESE at 0 mph. That’s excellent surf for experienced surfers – the 8ft size is serious, and the long period means big, clean lines on the reef. This is the session to plan for.
Monday the 28th morning is another glassy session with 6ft SSW swell, 16-second period. Tuesday the 29th morning is glassy again with 5ft SSW, 14-second period – very clean.
So, the top picks are Sunday the 20th morning for decent size and cleaner wind, and then without a doubt, Sunday the 27th morning with 8ft glassy groundswell. That’s the one. Bawa can get a few people on it – crowds listed as "sometimes" – but for these conditions, it’s worth sharing the water.
Rusty.
Short Range ForecastHeavy rain (total 60mm), heaviest during Tue night. Warm (max 28°C on Tue afternoon, min 26°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 22mm), heaviest during Fri night. Warm (max 28°C on Sun afternoon, min 23°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | |||||||||||||||
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 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 17 | SSW 16 | SSW 16 | SSW 14 | SSW 14 | SSW 14 | SW 18 | SW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 13 |
Wave Graph | |||||||||||||||||||||
1550 | 1428 | 1142 | 1057 | 1072 | 1130 | 1813 | 1361 | 1257 | 752 | 796 | 621 | 915 | 2212 | 2290 | 2178 | 2228 | 1475 | 1114 | 969 | 683 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | cross-on | on | on | on | on | on | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross | on | cross-on | cross-on | cross-on | glassy |
High Tide | 8:28PM0.74m | 8:25AM0.53m | 9:00PM0.69m | 8:47AM0.45m | 9:36PM0.62m | 9:03AM0.39m | 10:23PM0.56m | 9:05AM0.33m | 11:47PM0.51m | 1:57AM0.52m | 3:36PM0.32m | 3:15AM0.57m | |||||||||
Low Tide | 1:49PM0.04m | 2:38AM0.13m | 2:11PM0.06m | 3:14AM0.18m | 2:35PM0.09m | 3:55AM0.23m | 2:59PM0.14m | 5:03AM0.29m | 3:26PM0.19m | 4:15PM0.25m | 10:23AM0.23m | 7:43PM0.28m | |||||||||
6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | |
— | 6:29 | — | — | 6:29 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:27 | — | — | 6:27 | — | |
mm | 1 | 3 | 11 | 6 | 8 | 7 | 9 | 5 | 10 | 5 | 5 | 11 | 1 | — | — | — | — | — | — | — | — |
Temp °C | 27 | 28 | 27 | 28 | 28 | 28 | 26 | 27 | 27 | 26 | 26 | 26 | 25 | 26 | 26 | 27 | 28 | 28 | 28 | 28 | 28 |
Feels °C | 31 | 30 | 29 | 29 | 29 | 29 | 27 | 28 | 28 | 29 | 29 | 27 | 27 | 29 | 28 | 31 | 31 | 31 | 31 | 30 | 32 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 17 | SSW 16 | SSW 16 | SSW 14 | SSW 14 | SSW 14 | SW 18 | SW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 13 |
1550 | 1428 | 1142 | 1057 | 1072 | 1130 | 1813 | 1361 | 1257 | 752 | 796 | 621 | 915 | 2212 | 2290 | 2178 | 2228 | 1475 | 1114 | 969 | 683 | |
Swell 2 Height (m) Direction Period (s) | SSE 8 | W 9 | WNW 8 | SW 20 | SW 20 | W 10 | WNW 9 | W 9 | S 7 | S 7 | S 7 | WNW 10 | SSW 14 | WNW 8 | W 8 | SSE 7 | WNW 9 | SSW 16 | SSW 15 | SSW 14 | SSW 13 |
63 | 6 | 13 | 100 | 186 | 92 | 110 | 78 | 43 | 31 | 33 | 209 | 515 | 70 | 29 | 31 | 32 | 269 | 355 | 269 | 239 | |
Swell 3 Height (m) Direction Period (s) | WNW 9 | WNW 6 | SSW 21 | WNW 8 | WNW 8 | SW 18 | W 15 | WSW 18 | WNW 8 | WNW 8 | WNW 8 | SW 18 | WNW 9 | S 7 | S 6 | WNW 7 | WSW 17 | WNW 9 | WNW 8 | WNW 8 | WNW 8 |
16 | 4 | 45 | 13 | 13 | 255 | 4 | 31 | 73 | 51 | 48 | 330 | 103 | 23 | 19 | 18 | 27 | 31 | 38 | 26 | 25 | |
Wind waves Height (m) Direction Period (s) | — | S 8 | S 5 | S 6 | S 7 | S 7 | S 7 | SSE 7 | — | — | — | S 7 | S 7 | — | — | — | — | — | — | — | — |
— | 58 | 65 | 94 | 128 | 104 | 89 | 73 | — | — | — | 46 | 35 | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 15 | 138 | 138 | 15 | 138 | 138 | 37 | 138 | 15 | 15 | 50 | 50 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 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.










