
Surf Forecasts:
Bawa surf forecast from 13 Sep 2026:
- Best quality surf: Monday 14 Sep, 1PM (local time) - 6ft (1.9m), 16s period, SW swell with glassy winds.
- Most powerful swell: Sunday 13 Sep, 10PM (local time) - 7ft (2.1m), 16s period, SW swell with 2,415 kJ wave energy.
- Next surfable swell (1★+): Monday 14 Sep, 1PM (local time) - 6ft (1.9m), 16s period with SW 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 Monday (Sep 14) at 1PM. The primary swell is predicted to be 1.9m and 16s period with a secondary swell of 1.1m and 7s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Bawa in the next 16 days are 2.1m 16s and forecast to arrive on Sunday (Sep 13) at 10PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Friday (Sep 18) at 7AM.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Mon 14th Sep) | 6ft (1.9m) 16s |
| Best Surf | 1PM (Mon 14th Sep) | 6ft (1.9m) 16s |
| Most Powerful | 10PM (Sun 13th Sep) | 7ft (2.1m) 16s |
Table - best surf conditions forecast for Bawa over the next 16 days.
The Lowdown
Alright folks, Rusty here with the long-range outlook for Bawa. Let’s cut straight to it.
The next couple of days are pretty messy. We’ve got some decent sized swell pulsing in – 2.2m from the SW with a 17-second period on Sunday (13th September), but that cross-on SSE wind at 9 mph is ruining the party, making everything choppy and chunky. The water is sitting at 86°, which is almost a degree and a half warmer than usual for this time of year, so at least you’ll be warm while you get frustrated.
Monday (14th) drops a little in size but stays cross-shore and messy. Honestly, the whole first part of the week is a write-off for good quality waves, with onshore winds and storm risks popping up. Wednesday and Thursday stay in that marginal, cross-shore zone. The combined swell energy through this period is strong, bouncing around 1256 to 2892, but without clean wind, it’s just a washing machine.
The standout window – and I mean the real jewel in this forecast – is Tuesday (15th September). We get an absolute reset: a clean 1.9m to 1.8m (that’s 6ft to 6ft) SSW groundswell with a long 15-second period, and the wind goes glassy. Both morning and afternoon sessions look mint. This isn’t beginner territory – that 1.9m stuff on a reef and point setup is for the experienced crew, and with crowds only “sometimes,” you might get a few good ones to yourself. The swell direction (SSW) lines up well with Bawa’s optimum SW. If you can get out mid-week, this is the day.
After that, things get quiet for a stretch. The wind comes back onshore from the 16th right through to the 20th September, so the 17th – 20th is basically a write-off. Morning windows on the 21st and 22nd go glassy again, but the swell drops to only 1.6m (5ft) and then a tiny 0.9m (3ft), so the energy is fading (down to 587 by Tuesday 22nd). Still, a 3ft glassy morning at Bawa is a fun log day.
The forecast then builds again into the final week. The morning of Saturday 26th and Sunday 27th look very promising: clean glass or light cross-offshore winds, with a solid 1.7m (6ft) SSW swell and 15-second periods. The combined energy climbs back over 1400, so there’s proper push behind it. The real blockbuster, though, is Monday 28th September. We’re seeing a solid 1.9m to 2.1m (6ft to 7ft) SSW groundswell with a long 18-second period, light cross-offshore wind, and the highest energy of the whole outlook at 3043 to 3358. That’s a powerful, clean, proper groundswell. That 2.1m on a reef/point means it’s expert-only territory, and those long-period swells are best handled there – the wave shape will be top-tier.
So, to sum it up: Thursday through Sunday this week is skunked. Tuesday (15th) is your early win. Then a quiet spell, and the big finish is Monday 28th September – mark that date. It’s a long way off, so the confidence is less certain, but if it holds, it’s the best day on offer.
Stay safe, keep your wits about you on the bigger days, and I’ll see you in the water.
Rusty
Short Range ForecastHeavy rain (total 46mm), heaviest during Sun night. Warm (max 28°C on Sun afternoon, min 26°C on Mon afternoon). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 53mm), heaviest during Thu night. Warm (max 28°C on Wed afternoon, min 25°C on Fri morning). Wind will be generally light. | |||||||||||||||||||
Sun 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | ||||||||||||||
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 17 | SW 16 | SW 15 | SW 15 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SW 18 | SSW 17 | SSW 16 |
Wave Graph | ||||||||||||||||||||
2664 | 2054 | 1685 | 1171 | 1880 | 1550 | 1428 | 1142 | 1057 | 1010 | 1010 | 1638 | 1361 | 1257 | 897 | 701 | 538 | 915 | 1626 | 2051 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross | glassy | glassy | glassy | glassy | cross-on | on | glassy | cross | on | cross-on | off | cross-off | glassy | cross-on | on | glassy |
High Tide | 7:25PM0.79m | 7:32AM0.68m | 7:56PM0.78m | 8:00AM0.60m | 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 | |||||||
Low Tide | 1:30AM0.06m | 1:26PM0.02m | 2:04AM0.09m | 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 | ||||||||
— | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:20 | — | — | 6:20 | — | — | |
6:30 | — | — | 6:29 | — | — | 6:29 | — | — | 6:29 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | |
mm | 2 | 16 | 7 | 6 | 3 | — | — | 6 | 6 | 1 | 5 | — | 3 | 25 | 10 | 2 | 3 | 4 | 5 | 9 |
Temp °C | 28 | 28 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 26 | 25 | 26 | 27 | 27 | 27 |
Feels °C | 31 | 31 | 31 | 30 | 32 | 33 | 32 | 32 | 31 | 31 | 31 | 31 | 30 | 29 | 26 | 27 | 30 | 30 | 30 | 31 |
Swell 1 Height (m) Direction Period (s) | SW 17 | SW 16 | SW 15 | SW 15 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SW 18 | SSW 17 | SSW 16 |
2664 | 2054 | 1685 | 1171 | 1880 | 1550 | 1428 | 1142 | 1057 | 1010 | 1010 | 1638 | 1361 | 1257 | 897 | 701 | 538 | 915 | 1626 | 2051 | |
Swell 2 Height (m) Direction Period (s) | SSE 9 | S 7 | WSW 16 | SSW 16 | S 8 | SSE 8 | SSE 8 | SSE 8 | WNW 8 | SW 20 | W 10 | W 9 | W 9 | WNW 9 | WNW 9 | WNW 8 | WNW 8 | SSW 13 | SSW 13 | S 7 |
106 | 92 | 52 | 612 | 95 | 79 | 63 | 77 | 22 | 186 | 92 | 81 | 110 | 144 | 143 | 99 | 72 | 362 | 350 | 48 | |
Swell 3 Height (m) Direction Period (s) | WSW 18 | WSW 18 | WSW 16 | WSW 16 | WSW 16 | W 9 | WNW 7 | WNW 8 | SW 20 | WNW 8 | SW 18 | W 15 | WSW 18 | W 18 | S 7 | S 7 | SW 18 | WNW 9 | WNW 9 | W 8 |
60 | 60 | 53 | 50 | 24 | 15 | 4 | 22 | 100 | 13 | 255 | 4 | 31 | 6 | 56 | 59 | 334 | 82 | 80 | 49 | |
Wind waves Height (m) Direction Period (s) | SSE 6 | — | S 7 | SSE 7 | — | — | — | — | SSE 8 | SSE 6 | S 7 | S 6 | S 6 | S 6 | — | — | — | — | — | — |
62 | — | 107 | 125 | — | — | — | — | 77 | 64 | 146 | 139 | 134 | 92 | — | — | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 15 | 15 | 15 | 37 | 0 | 0 | 0 | 0 | 15 | 15 | 0 | 15 | 138 | 15 | 37 | 50 | 0 | 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.










