Surf Forecasts:
Downtowns surf forecast from 6 Aug 2026:
- Best quality surf: Monday 10 Aug, 8PM (local time) - 10ft (3.0m), 18s period, SSW swell with cross-offshore winds.
- Most powerful swell: Tuesday 11 Aug, 2AM (local time) - 10ft (3.0m), 17s period, SSW swell with 5,657 kJ wave energy.
- Next surfable swell (1★+): Thursday 6 Aug, 5PM (local time) - 7ft (2.1m), 16s period with SSW swell.
Best Forecast Surf Conditions for Downtowns this week:
The surf forecast for Downtowns over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 06) at 5PM. The primary swell is predicted to be 2.1m and 16s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Downtowns in the next 16 days are 3.0m 17s and forecast to arrive on Tuesday (Aug 11) at 2AM. 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 Friday (Aug 07) at 5AM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Thu 6th Aug) | 7ft (2.1m) 16s |
| Best Surf | 8PM (Mon 10th Aug) | 10ft (3.0m) 18s |
| Most Powerful | 2AM (Tue 11th Aug) | 10ft (3.0m) 17s |
Table - best surf conditions forecast for Downtowns over the next 16 days.
The Lowdown
Alright, let’s talk surf in feet and miles. This is Rusty, and we’ve got a solid run of swell coming into this reef break. Water temp is about 80°F, which is normal for this time of year, so nothing unusual there.
The place to be is Downtowns. It’s a reef, fairly consistent, and it’s going to be pumping. The swell is from the SSW, with a long period—around 16 to 17 seconds—which means it’s a proper groundswell with good energy. The combined energy reading is 2466 early on, and it gets stronger.
Thursday morning (August 6th) is your best early call. Glassy conditions, a light 5 km/h SE breeze, and a clean 7ft SSW swell. That’s perfect for experienced surfers. The afternoon holds up with 7ft. Friday (7th) is even better, with 8ft in the morning and 8ft by the afternoon, still glassy. This is a top-tier session.
Saturday (8th) and Sunday (9th) are still good, but the wind picks up. Saturday morning has a cross-shore breeze, but the afternoon cleans up. The swell stays around 8ft to 7ft.
Monday (10th) gets big. The afternoon swell hits 10ft with a very long 19-second period, and the combined energy is 5209. That’s a lot of power. The wind is cross-shore, so it’s a bit messy. This is for experts only.
Tuesday (11th) and Wednesday (12th) are similar, but conditions improve Wednesday afternoon. The real standout is Thursday (13th). That afternoon, it’s glassy again, with a 5 km/h SE wind, 10ft swell, and 4533 energy. That’s a session.
The second week is a bit more settled. Friday (14th) has 8ft, Saturday (15th) has 6ft, and Sunday (16th) is clean in the morning. August 20th is looking promising long-range, with glassy conditions and a 10ft swell.
The best window is Thursday (6th) through Sunday (9th) for the cleanest, most consistent surf. If you want the biggest, cleanest day, aim for Thursday 13th August afternoon. Crowds can pop up sometimes, but it’s worth it.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Thu afternoon, min 22°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Sun morning. Warm (max 27°C on Sun morning, min 22°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | |||||||||||||||
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 17 | SSW 16 | SSW 16 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 19 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 14 | SSW 15 | SSW 18 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2434 | 2376 | 2178 | 2939 | 3444 | 3751 | 2936 | 2697 | 2389 | 2330 | 2096 | 1716 | 2443 | 5209 | 5657 | 4647 | 2948 | 3079 | 1336 | 2158 | 2605 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | off | glassy | glassy | off | cross | cross-off | cross-off | cross-off | cross-off | off | cross | cross | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off |
High Tide | 4:13PM0.87m | 3:54AM1.55m | 5:03AM1.57m | 6:28AM1.62m | 7:48AM1.69m | 11:09PM1.05m | 8:54AM1.78m | 11:21PM1.13m | 9:50AM1.83m | 11:42PM1.21m | |||||||||||
Low Tide | 10:29AM0.57m | 8:13PM0.74m | 12:24PM0.49m | 2:10PM0.34m | 3:14PM0.19m | 4:00PM0.07m | 2:12AM0.97m | 4:39PM0.01m | 3:28AM0.87m | 5:14PM0.01m | 4:26AM0.75m | ||||||||||
 | |  | | | | |  |  |  | | | | | | | | | | | | |
 | 6:26 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — |
 | — | 6:10 | — | — | 6:10 | — | — | 6:10 | — | — | 6:10 | — | — | 6:10 | — | — | 6:10 | — | — | 6:10 | — |
mm | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 28 | 24 | 26 | 26 | 25 | 26 | 27 | 24 | 27 | 27 | 25 | 25 | 26 | 24 | 26 | 26 | 24 | 26 | 27 | 24 |
Feels °C | 28 | 28 | 25 | 28 | 27 | 27 | 27 | 27 | 25 | 28 | 26 | 26 | 26 | 26 | 25 | 26 | 24 | 25 | 28 | 27 | 26 |
Swell 1 Height (m) Direction Period (s) | SSW 17 | SSW 16 | SSW 16 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 14 | SSW 15 | SSW 18 |
| kJ | 2434 | 2376 | 2178 | 2939 | 3444 | 3751 | 2936 | 2697 | 2389 | 2330 | 2096 | 1716 | 1389 | 5209 | 5657 | 4647 | 2948 | 3079 | 1336 | 2158 | 2605 |
Swell 2 Height (m) Direction Period (s) | SE 6 | — | — | SE 6 | SE 6 | — | SE 6 | — | — | — | — | SSW 21 | SSW 19 | — | — | — | SSW 19 | — | SSW 17 | S 22 | SSW 13 |
| kJ | 32 | — | — | 41 | 39 | — | 29 | — | — | — | — | 244 | 2443 | — | — | — | 1559 | — | 975 | 236 | 732 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SSW 18 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 31 | — | — |
Wind waves Height (m) Direction Period (s) | ESE 6 | SE 6 | SE 6 | ESE 7 | ESE 6 | SE 6 | SE 6 | SE 5 | SE 5 | SE 5 | SE 5 | SE 5 | — | — | — | — | SE 4 | — | SE 4 | ESE 4 | — |
| kJ | 111 | 38 | 46 | 116 | 108 | 69 | 73 | 49 | 23 | 39 | 51 | 28 | — | — | — | — | 16 | — | 12 | 8 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | 4 | 4 | 0 | 147 | 97 | 0 | 4 | 0 | 0 |
Best forecast wave conditions in Sumbawa | |||||||||||||||||||||
Best forecast wave conditions in Indonesia | |||||||||||||||||||||
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Information about the Downtowns Surf forecast
The above surf forecast table for Downtowns provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Downtowns can be found by selecting the local surf guide option on the grey menu. Our Downtowns 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 (Downtowns) 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 Downtowns 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.
Downtowns is 57 km (35 miles) from the city of Praya. If you plan a holiday in Sumbawa, look for hotels and other accommodation in Praya. Praya has rooms for a wide range of budgets as well as car hire and transport links.
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