10-day surf forecast with Strike Scores for Beng Bengs, Mentawai, Indonesia
Beng Bengs is the friendly left-hander sitting just up the channel from Macaronis, offering a refreshing counterpoint to its world-famous neighbor. Where Maccas is a precise, hollow machine, Beng Bengs is more forgiving—a rippable wall with occasional cover-up sections that welcomes progressive surfing and experimentation. When the Macaronis lineup is stacked with chargers, Beng Bengs provides breathing room and quality waves that are often overlooked. It's become a favorite among Mentawai regulars who know that scoring uncrowded perfection is just a short paddle away.
Best day in the forecast: 2026-08-07 with a score of 75/100 (Good)
Fair recommendation: Beng Bengs has 4 Good days but no Firing days. Decent for a local session.
Moderate alignment: Swell from 234° is 24° off optimal 210°, workable but not ideal.
Good size: 1.8m is within 15% of ideal 1.6m.
Perfect period: 14s is at or above ideal 14s. Long-period groundswell with maximum power.
Onshore/cross-shore: 12 km/h from 330° (NNW). Destroying wave quality. Offshore range: 70°-150°.
-10 points: Previous days of onshore wind left residual chop ("morning sickness"), reducing wave quality.
Groundswell-dominant conditions (clean, long-period waves).
Surfable but not special at Beng Bengs. The 1.8m swell from 234° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
1.8m (5.9ft) swell from 234° (SW) at 14s period
Moderate alignment: Swell from 198° is 12° off optimal 210°, workable but not ideal.
Too big: 2.6m exceeds maximum 2.5m. Risk of closeouts.
Good period: 17s is 121% of ideal 14s. Clean, powerful groundswell.
Onshore/cross-shore: 14 km/h from 360° (N). Destroying wave quality. Offshore range: 70°-150°.
-7 points: Previous days of onshore wind left residual chop ("morning sickness"), reducing wave quality.
Poor conditions at Beng Bengs. Either swell direction (198°), size (2.6m), or wind (14 km/h from 360°) is unfavorable. Consider other spots or wait for better conditions.
2.6m (8.5ft) swell from 198° (SSW) at 17s period
Moderate alignment: Swell from 194° is 16° off optimal 210°, workable but not ideal.
Perfect period: 16s is at or above ideal 14s. Long-period groundswell with maximum power.
Light offshore: 7 km/h from 117° (ESE). Grooming the wave face beautifully.
Good surfable conditions at Beng Bengs. 2.6m swell from 194° with manageable wind. Solid session guaranteed.
2.6m (8.5ft) swell from 194° (SSW) at 16s period
Moderate alignment: Swell from 193° is 17° off optimal 210°, workable but not ideal.
Too big: 2.7m exceeds maximum 2.5m. Risk of closeouts.
Strong offshore: 21 km/h from 137° (SE). Grooming but may make paddling difficult.
Good surfable conditions at Beng Bengs. 2.7m swell from 193° with moderate wind. Solid session guaranteed.
2.7m (8.9ft) swell from 193° (SSW) at 16s period
Local wind-generated waves (choppy, short-period)
Moderate alignment: Swell from 192° is 18° off optimal 210°, workable but not ideal.
Marginal size: 2.5m is 0.9m from ideal 1.6m.
Onshore/cross-shore: 23 km/h from 156° (SSE). Destroying wave quality. Offshore range: 70°-150°.
Surfable but not special at Beng Bengs. The 2.5m swell from 192° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
2.5m (8.2ft) swell from 192° (SSW) at 16s period
Moderate alignment: Swell from 185° is 25° off optimal 210°, workable but not ideal.
Marginal size: 2.3m is 0.6m from ideal 1.6m.
Perfect period: 15s is at or above ideal 14s. Long-period groundswell with maximum power.
Onshore/cross-shore: 18 km/h from 162° (SSE). Destroying wave quality. Offshore range: 70°-150°.
Surfable but not special at Beng Bengs. The 2.3m swell from 185° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
2.3m (7.5ft) swell from 185° (S) at 15s period
Poor alignment: Swell from 180° is 30° off optimal 210°, barely within workable range 190°-240°.
Too big: 3.4m exceeds maximum 2.5m. Risk of closeouts.
Strong offshore: 21 km/h from 144° (SE). Grooming but may make paddling difficult.
Surfable but not special at Beng Bengs. The 3.4m swell from 180° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
3.4m (11.2ft) swell from 180° (S) at 17s period
Poor alignment: Swell from 179° is 31° off optimal 210°, barely within workable range 190°-240°.
Too big: 3.1m exceeds maximum 2.5m. Risk of closeouts.
Strong offshore: 27 km/h from 148° (SSE). Grooming but may make paddling difficult.
Surfable but not special at Beng Bengs. The 3.1m swell from 179° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
3.1m (10.2ft) swell from 179° (S) at 16s period
Very low confidence (8-10 day forecast, conditions may change)
Poor alignment: Swell from 177° is 33° off optimal 210°, barely within workable range 190°-240°.
Strong offshore: 24 km/h from 140° (SE). Grooming but may make paddling difficult.
Good surfable conditions at Beng Bengs. 2.5m swell from 177° with moderate wind. Solid session guaranteed.
2.5m (8.2ft) swell from 177° (S) at 16s period
Poor alignment: Swell from 178° is 32° off optimal 210°, barely within workable range 190°-240°.
Marginal size: 2.4m is 0.8m from ideal 1.6m.
Moderate offshore: 19 km/h from 148° (SSE). Still grooming but noticeable wind.
+6 points: Multiple days of offshore wind have groomed the ocean surface, creating ultra-clean conditions.
Good surfable conditions at Beng Bengs. 2.4m swell from 178° with moderate wind. Solid session guaranteed.
2.4m (7.9ft) swell from 178° (S) at 15s period
Open-Meteo Weather API (wind/weather data)