Surf Forecasts:
Downtowns surf forecast from 23 Aug 2026:
- Best quality surf: Friday 28 Aug, 5AM (local time) - 8ft (2.5m), 18s period, SSW swell with glassy winds.
- Most powerful swell: Friday 28 Aug, 8AM (local time) - 8ft (2.5m), 17s period, SW swell with 4,161 kJ wave energy.
- Next surfable swell (1★+): Monday 24 Aug, 8AM (local time) - 4.5ft (1.4m), 17s 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 Monday (Aug 24) at 8AM. The primary swell is predicted to be 1.4m and 17s period with a secondary swell of 1.6m and 14s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Downtowns in the next 16 days are 2.5m 17s and forecast to arrive on Friday (Aug 28) at 8AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Tuesday (Aug 25) at 5PM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Mon 24th Aug) | 4.5ft (1.4m) 17s |
| Best Surf | 5AM (Fri 28th Aug) | 8ft (2.5m) 18s |
| Most Powerful | 8AM (Fri 28th Aug) | 8ft (2.5m) 17s |
Table - best surf conditions forecast for Downtowns over the next 16 days.
The Lowdown
Alright, Rusty here again, let’s break down the same stretch but in feet and Fahrenheit.
The first wave greets us Monday morning, August 24th, and it’s a cracker. Downtowns, a reef break, is getting a solid SW groundswell. Water temp is about 79°, which is normal for the season – no surprises. The swell is a solid 7ft from the SSW, with a long 16 second period, so the lines have power and shape. The wind is a gentle SSE cross-off, keeping the surface clean. The combined energy is pumpin’ at 1856, so there’s plenty of grunt. This is a standout for experienced surfers. For beginners, that 7ft is a bit much, so maybe skip it.
Monday afternoon holds at 6ft, still SSW, 16 seconds, with a light ESE cross-off – clean again. Tuesday stays strong: 5ft to 6ft, good SW groundswell, and Tuesday afternoon is a glassy beauty, 6ft, long period. That’s a dream session.
Wednesday morning is a little crossed up, but the afternoon glass-off cleans it to 5ft. Thursday drops in size, but Thursday afternoon has a sneaky 3ft swell with a 20 second period – that’s an incredibly long groundswell. The energy spikes to 1802, but with that period, it’s going to be fat and straight at a beach break, so it’s better at a point or reef. Still, clean and uncrowded.
Then Friday August 28th – watch out. Morning has 8ft of SW swell at 17 seconds, with combined energy of 3877. That’s serious, heavy water. The wind is cross-shore, so it’s not perfect, but for a big wave expert, it’s on. Same story Friday afternoon, still 8ft with a little chop. Experts only.
Saturday the 29th backs down to 6ft, still solid, and Saturday afternoon goes glassy with 5ft – a beautiful clean-up. The pattern holds through Sunday and into the next week. The real highlight in the second week is Tuesday, September 1st. The afternoon goes glassy, 7ft from the SW, 17 seconds, energy at 2499. That’s a powerful, clean, proper swell. That’s the one to chase.
Overall, the whole run is consistent, with plenty of glassy afternoons. The best of the best? Monday August 24th morning and Tuesday September 1st afternoon. Don’t miss ‘em.
Rusty
Short Range ForecastMostly dry. Warm (max 28°C on Mon morning, min 22°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Fri morning, min 22°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | |||||||||||||||
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 | SSW 16 | SSW 14 | SW 15 | SW 16 | SSW 14 | SSW 14 | SSW 14 | SSW 12 | SW 16 | SW 20 | SSW 18 | SW 17 | SSW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SSW 13 | SSW 13 | SSW 19 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1856 | 1608 | 1057 | 1088 | 1449 | 1142 | 1143 | 883 | 426 | 558 | 769 | 3535 | 3877 | 3413 | 2594 | 1506 | 911 | 754 | 805 | 690 | 650 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | glassy | off | cross | glassy | off | cross | cross | off | cross | cross | off | cross | glassy | off | cross | cross-off | off |
High Tide | 11:17PM1.08m | 8:38AM1.49m | 11:10PM1.12m | 9:22AM1.57m | 11:15PM1.19m | 10:01AM1.62m | 11:27PM1.27m | 10:37AM1.64m | 11:42PM1.36m | 11:13AM1.62m | 11:59PM1.44m | 11:49AM1.55m | 00:19AM1.52m | ||||||||
Low Tide | 3:53PM0.29m | 2:37AM1.00m | 4:20PM0.23m | 3:25AM0.91m | 4:44PM0.20m | 4:03AM0.82m | 5:07PM0.20m | 4:38AM0.72m | 5:28PM0.23m | 5:13AM0.62m | 5:48PM0.29m | 5:49AM0.53m | 6:07PM0.37m | ||||||||
 |  |  | | | | | | | | |  | | | | | | | | | | |
 | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — |
 | — | 6:10 | — | — | 6:10 | — | — | 6:10 | — | — | 6:10 | — | — | 6:10 | — | — | 6:10 | — | — | 6:10 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 28 | 24 | 27 | 28 | 25 | 26 | 26 | 24 | 26 | 26 | 24 | 27 | 26 | 25 | 26 | 27 | 24 | 27 | 27 | 24 |
Feels °C | 28 | 29 | 25 | 27 | 28 | 26 | 28 | 27 | 26 | 28 | 26 | 26 | 28 | 26 | 26 | 27 | 28 | 26 | 28 | 27 | 26 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 14 | SW 15 | SW 16 | SSW 14 | SSW 14 | SSW 14 | SSW 12 | SW 16 | SSW 12 | SSW 18 | SW 17 | SSW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SSW 13 | SSW 13 | SW 12 |
| kJ | 1856 | 1608 | 1057 | 1088 | 1449 | 1142 | 1143 | 883 | 426 | 558 | 510 | 3535 | 3877 | 3413 | 2594 | 1506 | 911 | 754 | 805 | 690 | 353 |
Swell 2 Height (m) Direction Period (s) | — | SW 20 | SW 18 | SSW 6 | SE 6 | — | — | SE 5 | SSW 13 | SW 12 | SW 15 | — | — | — | — | SE 6 | SSW 15 | SW 15 | SW 22 | SW 21 | SSE 8 |
| kJ | — | 97 | 199 | 3 | 46 | — | — | 21 | 229 | 282 | 523 | — | — | — | — | 46 | 405 | 174 | 118 | 222 | 130 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | SSW 6 | — | — | — | SW 16 | S 5 | SW 20 | — | — | — | — | SSW 6 | SW 22 | SSW 24 | SW 22 | — | SSW 19 |
| kJ | — | — | — | — | 7 | — | — | — | 278 | 19 | 769 | — | — | — | — | 4 | 18 | 54 | 227 | — | 650 |
Wind waves Height (m) Direction Period (s) | SE 5 | SE 5 | SE 5 | SE 6 | ESE 6 | SE 5 | ESE 5 | ESE 5 | — | SE 4 | — | — | SE 5 | SE 5 | SE 5 | ESE 6 | SSE 6 | SSE 5 | SE 5 | ESE 5 | SSE 8 |
| kJ | 32 | 62 | 30 | 54 | 111 | 14 | 51 | 56 | — | 16 | — | — | 35 | 29 | 42 | 128 | 55 | 34 | 40 | 33 | 208 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 4 | 176 | 0 | 4 | 4 | 0 | 4 | 0 | 0 | 4 | 0 | 0 |
Best forecast wave conditions in Sumbawa | |||||||||||||||||||||
Best forecast wave conditions in Indonesia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Downtowns surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest