Surf Forecasts:
Nungas surf forecast from 18 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 8PM (local time) - 8ft (2.5m), 18s period, SSW swell with offshore winds.
- Most powerful swell: Wednesday 19 Aug, 11PM (local time) - 10ft (3.0m), 17s period, SW swell with 4,883 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 5PM (local time) - 6ft (1.8m), 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 Tuesday (Aug 18) at 5PM. The primary swell is predicted to be 1.8m and 16s period with a secondary swell of 0.9m and 21s. 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 3.0m 17s and forecast to arrive on Wednesday (Aug 19) at 11PM. Winds are predicted to be 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 (Tue 18th Aug) | 6ft (1.8m) 16s |
| Best Surf | 8PM (Wed 19th Aug) | 8ft (2.5m) 18s |
| Most Powerful | 11PM (Wed 19th Aug) | 10ft (3.0m) 17s |
Table - best surf conditions forecast for Nungas over the next 16 days.
The Lowdown
Alright, surf's here. This run has some serious energy behind it.
The opening stretch starts off with a solid, clean pulse. Tuesday morning sees a 4ft SSW groundswell pouring in with that classic 16-second period. The east-southeast breeze is just right, keeping things lined up and clean. Water temp is sitting around 80°, which is pretty much bang on average for this time of year, so no dramas there. Nungas is a reef and point setup, so that long-period swell isn't going to close out on us. It’s a bit of a gentle start, but the energy is building.
By Wednesday morning, it's on the rise. We're looking at an 8ft SW swell with a 19-second period. That's some proper groundswell. The energy reading is strong, hitting 3860. It's pushing into that territory where it's not for the faint-hearted, but it's still a clean, cross-off breeze. Thursday morning looks like the standout of this first week – a solid 10ft of SW swell with 16-second period, and the energy is cranking at 4254. This is the day to paddle out early, it has that hard-to-beat mix of size, power, and clean conditions. After that, it backs off a touch into Friday and the weekend, still holding around the 6-7ft mark with clean mornings and a bit of afternoon chop to be wary of.
There’s a bit of a lull through the middle part of next week, with the swell dropping to around 4-5ft. Still plenty rideable, but it's lost that bite. The winds stay mostly favourable, though it gets a touch more cross-shore as we head into the back half of the week.
Then things get interesting again. The following Tuesday, September 1st, starts to show a renewed push, and by Wednesday September 2nd, we're back into solid 8ft SW groundswell with light, clean cross-off winds. That’s the long-range head-turner, still a week out so treat it as promising, but the signs are all there. Potential for a serious session.
One thing to keep in mind: Nungas can get crowded, and it's only "fairly consistent", so there will be lulls between sets. Pick your moments.
Short Range ForecastMostly dry. Warm (max 28°C on Tue morning, min 23°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 29°C on Fri afternoon, min 22°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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 16 | SW 16 | SSW 16 | SW 19 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | SW 14 | SSW 15 | SSW 16 | SSW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 726 | 1693 | 1953 | 3860 | 3839 | 4484 | 4190 | 3648 | 2545 | 2102 | 3229 | 2928 | 2900 | 2550 | 1857 | 1809 | 1797 | 1340 | 1809 | 1721 | 1699 |
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 | off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | cross-off | off |
High Tide | 1:23PM2.47m | 1:38AM2.82m | 1:54PM2.20m | 2:06AM2.64m | 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 | ||||||||
Low Tide | 7:19PM0.55m | 8:02AM0.61m | 7:43PM0.75m | 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 | ||||||||
 | |  | | | | | |  | | | | | | | | | |  | | | |
 | 6:15 | — | — | 6:15 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:11 | — | — |
 | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 28 | 24 | 28 | 28 | 24 | 27 | 28 | 24 | 28 | 29 | 24 | 27 | 28 | 24 | 27 | 27 | 24 | 26 | 28 | 24 |
Feels °C | 29 | 28 | 26 | 29 | 29 | 26 | 28 | 29 | 26 | 29 | 29 | 26 | 28 | 28 | 26 | 28 | 27 | 26 | 27 | 28 | 26 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SW 16 | SSW 16 | SW 19 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | SW 14 | SSW 15 | SSW 16 | SSW 16 |
| kJ | 726 | 1693 | 1953 | 3860 | 3839 | 4484 | 4190 | 3648 | 2545 | 2102 | 3229 | 2928 | 2900 | 2550 | 1857 | 1809 | 1797 | 1340 | 1809 | 1721 | 1699 |
Swell 2 Height (m) Direction Period (s) | SW 13 | SW 21 | SW 20 | — | — | SE 7 | — | — | — | SSE 6 | — | SSE 7 | — | S 26 | SSW 24 | ESE 5 | SSW 20 | SSW 18 | SW 21 | SW 20 | SSE 5 |
| kJ | 444 | 756 | 881 | — | — | 57 | — | — | — | 12 | — | 56 | — | 13 | 54 | 15 | 790 | 835 | 72 | 97 | 7 |
Swell 3 Height (m) Direction Period (s) | SW 21 | SE 6 | — | — | — | — | — | — | — | — | — | — | — | — | SSW 24 | SSW 21 | SSW 7 | SSE 6 | SSE 5 | SW 20 | — |
| kJ | 658 | 8 | — | — | — | — | — | — | — | — | — | — | — | — | 54 | 300 | 5 | 40 | 8 | 60 | — |
Wind waves Height (m) Direction Period (s) | ESE 5 | ESE 4 | E 4 | ESE 5 | ESE 4 | ESE 5 | SE 7 | — | SE 6 | E 4 | — | ESE 6 | — | — | SE 6 | — | SSE 4 | ESE 6 | ESE 5 | ESE 5 | E 6 |
| kJ | 42 | 27 | 18 | 17 | 25 | 36 | 64 | — | 56 | 13 | — | 111 | — | — | 20 | — | 32 | 74 | 36 | 19 | 48 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 173 | 0 | 0 | 173 | 0 | 0 | 0 | 0 | 0 | 173 | 0 | 0 | 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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