Surf Forecasts:
Nungas surf forecast from 20 Aug 2026:
- Best quality surf: Thursday 20 Aug, 5PM (local time) - 8ft (2.5m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Thursday 20 Aug, 5PM (local time) - 8ft (2.5m), 16s period, SW swell with 3,808 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 5PM (local time) - 8ft (2.5m), 16s period with SW swell.
Best Forecast Surf Conditions for Nungas this week:
The surf forecast for Nungas over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 20) at 5PM. The primary swell is predicted to be 2.5m and 16s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Nungas in the next 16 days are 2.5m 16s and forecast to arrive on Thursday (Aug 20) at 5PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Saturday (Aug 22) at 2AM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Thu 20th Aug) | 8ft (2.5m) 16s |
| Best Surf | 5PM (Thu 20th Aug) | 8ft (2.5m) 16s |
| Most Powerful | 5PM (Thu 20th Aug) | 8ft (2.5m) 16s |
Table - best surf conditions forecast for Nungas over the next 16 days.
The Lowdown
Alright crew, Rusty here again. Let’s break down the same swell in feet and Fahrenheit.
The run kicks off Thursday the 20th of August with a solid stretch of surf. The water is about 80°F, which is pretty standard for this time of year.
The standout is the very first session: Thursday morning the 20th of August at Nungas. This spot is a reef and point set-up, and it’s going to be absolutely pumping. A 10 ft SW swell with a very long period of 16 seconds is rolling in, giving it a combined energy of (4398). The wind is a light cross-off breeze from the SE at 6 mph, keeping the surface clean. This is excellent, but it’s big—over 8 ft—so it’s for experienced surfers only.
The swell drops a bit Friday and through the weekend, holding around 7 ft to 8 ft from the SW and SSW. Periods stay long, 15 to 17 seconds, so the waves will have good shape. Winds stay light and cross-off, keeping things clean. You might see a few other folks out here, so be ready for a crowd.
The surf dips into the following week, with Tuesday morning the 25th dropping to 5 ft, energy (1125), but it cleans up again. Wednesday the 26th is a little smaller but still rideable.
Then, we get another big pulse. Friday morning the 28th of August, a 8 ft SW swell with a 16-second period and energy (3400) rolls in. Light winds again. That’s a solid second peak.
The absolute best of the run, though, looks to be the end of August and start of September. Monday the 31st of August afternoon sees a 6 ft SW swell with a massive 20-second period, energy (3870). That’s a dream groundswell for a point break. Then Tuesday the 1st of September is the real monster: 10 ft SW swell, 18-second period, and energy (5540) in the morning. Winds are light and cross-off. This is expert-only, but the quality is unreal. Remember, this is over a week out, so keep an eye on it.
The surf then winds down through the first week of September with smaller, cleaner days.
The first Thursday and the start of September are the ones to circle. Get after it.
- Rusty
Short Range ForecastMostly dry. Warm (max 28°C on Fri afternoon, min 22°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Sun morning, min 23°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | |||||||||||||||
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) | SW 16 | SW 16 | SW 16 | SW 15 | SW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 16 | SW 15 | SSW 14 | SW 16 | SW 15 | SW 14 | SSW 14 | SW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 4367 | 3808 | 2917 | 2263 | 3146 | 2928 | 2900 | 2472 | 2016 | 1871 | 1797 | 1488 | 2016 | 1997 | 1472 | 763 | 1591 | 1306 | 1016 | 1080 | 769 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | cross | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | off |
High Tide | 2:24PM1.94m | 2:36AM2.43m | 3:00PM1.67m | 3:16AM2.22m | 4:44PM1.45m | 4:45AM2.03m | 10:07PM1.61m | 7:24AM2.06m | 9:45PM1.82m | 8:37AM2.25m | 10:01PM2.03m | 9:21AM2.46m | 10:20PM2.25m | ||||||||
Low Tide | 8:39AM0.81m | 8:04PM0.96m | 9:26AM1.02m | 8:22PM1.18m | 10:48AM1.19m | 8:25PM1.38m | 2:10PM1.14m | 11:41PM1.60m | 3:08PM0.93m | 2:37AM1.45m | 3:38PM0.72m | 3:22AM1.23m | 4:03PM0.54m | 3:55AM1.00m | |||||||
 | |  |  | | | | | | | |  | | | | | | | | | | |
 | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — |
 | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 27 | 24 | 27 | 28 | 24 | 27 | 28 | 23 | 27 | 27 | 24 | 26 | 27 | 24 | 26 | 27 | 24 | 27 | 27 | 24 |
Feels °C | 27 | 28 | 26 | 28 | 28 | 25 | 28 | 28 | 25 | 29 | 27 | 26 | 26 | 27 | 26 | 26 | 27 | 26 | 27 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 16 | SW 15 | SW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 16 | SW 15 | SSW 14 | SW 16 | SW 15 | SW 14 | SSW 14 | SW 13 |
| kJ | 4367 | 3808 | 2917 | 2263 | 3146 | 2928 | 2900 | 2472 | 2016 | 1871 | 1797 | 1488 | 2016 | 1997 | 1472 | 763 | 1591 | 1306 | 1016 | 1080 | 769 |
Swell 2 Height (m) Direction Period (s) | SE 6 | — | — | SSE 5 | — | SSE 7 | — | S 26 | SSW 24 | SSW 21 | SSW 20 | SSW 18 | ESE 5 | SW 20 | SSE 5 | SW 17 | ESE 5 | SSW 5 | S 5 | ESE 4 | S 8 |
| kJ | 31 | — | — | 5 | — | 56 | — | 13 | 54 | 297 | 790 | 835 | 21 | 60 | 20 | 362 | 26 | 10 | 12 | 4 | 64 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | SSW 24 | — | — | SE 6 | SSE 5 | — | E 6 | E 5 | — | E 5 | E 5 | — | SW 24 |
| kJ | — | — | — | — | — | — | — | — | 54 | — | — | 36 | 15 | — | 15 | 13 | — | 21 | 12 | — | 22 |
Wind waves Height (m) Direction Period (s) | — | SE 6 | ESE 6 | E 4 | ESE 5 | ESE 6 | — | — | — | — | — | — | — | SSE 5 | — | ESE 5 | — | ESE 5 | — | — | E 6 |
| kJ | — | 42 | 37 | 20 | 17 | 102 | — | — | — | — | — | — | — | 19 | — | 34 | — | 66 | — | — | 10 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 173 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 180 | 0 | 0 |
Best forecast wave conditions in Sumbawa | |||||||||||||||||||||
Best forecast wave conditions in Indonesia | |||||||||||||||||||||
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Information about the Nungas Surf forecast
The above surf forecast table for Nungas provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Nungas can be found by selecting the local surf guide option on the grey menu. Our Nungas 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 (Nungas) 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 Nungas 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 Sumbawa? If you are looking for accommodation near Nungas, camping, hotels and holiday cottages in Sumbawa, consider staying in Bima which is 52 km (32 miles) away. Alternatively, find information about places to stay and car hire in Raba which is 56 km (35 miles) away
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