Surf Forecasts:
Downtowns surf forecast from 27 Jul 2026:
- Best quality surf: Thursday 30 Jul, 11AM (local time) - 4.5ft (1.3m), 15s period, SSW swell with cross-offshore winds.
- Most powerful swell: Sunday 2 Aug, 2PM (local time) - 7ft (2.2m), 17s period, SSW swell with 2,829 kJ wave energy.
- Next surfable swell (1★+): Tuesday 28 Jul, 2AM (local time) - 4.5ft (1.4m), 8s period with SE 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 Tuesday (Jul 28) at 2AM. The primary swell is predicted to be 1.4m and 8s period with a secondary swell of 0.6m and 13s. Another secondary swell of 0.6m and 16s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Downtowns in the next 16 days are 2.2m 17s and forecast to arrive on Sunday (Aug 02) at 2PM. Winds are predicted to be cross-shore 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 (Jul 31) at 2PM.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Tue 28th Jul) | 4.5ft (1.4m) 8s |
| Best Surf | 11AM (Thu 30th Jul) | 4.5ft (1.3m) 15s |
| Most Powerful | 2PM (Sun 2nd Aug) | 7ft (2.2m) 17s |
Table - best surf conditions forecast for Downtowns over the next 16 days.
The Lowdown
Alright, Rusty here. We’ve got a solid run of SSW groundswell for Downtowns, starting Tuesday, July 28th, and running through to mid-August.
Tuesday morning, July 28th, we’re looking at a small 3ft SSW swell with a 16-second period. That’s a long-period groundswell, so there’s some energy (569), but it’s small. The wind is a light cross-off from the SE, so the surface is clean. It’s a slow start, but it’s on.
The swell builds Wednesday, July 29th, to 4ft to 4ft, still with a nice long period (14 to 15 seconds). The energy jumps to 727-779. The cross-off wind holds, so the surf is getting better and cleaner. Good for intermediates.
Thursday, July 30th, is where it gets interesting. The morning has 4ft SSW swell, a 15-second period, and energy at 1348. Light cross-off wind keeps it clean. This is the first real standout for experienced surfers. The afternoon is even better: 3ft swell with a 19-second period (very long period) and energy at 1502. That’s a lot of push for a waist-high wave. Conditions are excellent.
Friday, July 31st, is a mixed bag. The morning has cross-shore wind, but the afternoon is magic. The wind drops to glassy, 4ft SW swell with a 17-second period, and energy at 1358. That’s a top-tier afternoon session.
Saturday, August 1st, has a morning with a light cross-on wind, but the swell is up to 5ft. The afternoon is the winner: glassy conditions, 6ft SSW swell, 17-second period, and energy at 1676. This is expert territory, but it’s going to be incredible.
Sunday, August 2nd, is the best of the first week. The afternoon is glassy, with a 7ft SSW swell, a 17-second period, and massive energy at 2829. This is a true standout. The morning is a bit messy, but the afternoon is pure gold.
The next week keeps going. Monday, August 3rd, and Tuesday, August 4th, both have clean afternoons with 6ft SSW swell and good energy.
Wednesday, August 5th, is another standout. The afternoon has a 6ft SSW swell with a 19-second period, energy at 3483, and glassy conditions. That’s a huge, powerful wave for the reef.
Thursday, August 6th, is big, with 8ft in the morning and 8ft in the afternoon. The afternoon is glassy, and the energy is over 3000. This is expert-only.
Friday, August 7th, sees a slight drop to 7ft, but it’s clean and glassy in the afternoon.
Then Saturday, August 8th, is the biggest day. 10ft to 12ft SSW swell, 20-second period, and energy hitting 8160-8307. This is exceptional surf for expert surfers only. The wind is cross-off, so the waves will be clean and lined up. This is a once-in-a-while day.
Sunday, August 9th, carries the swell, but the wind gets stronger (25 km/h), making it messy.
Monday, August 10th, through Wednesday, August 12th, the swell stays solid (7ft to 8ft), but the wind is inconsistent. The afternoons are still the best call.
The water temperature is about average for this time of year.
The standout is Saturday, August 8th, for the expert crew. The second best is the afternoon of Sunday, August 2nd, for the glassy, 7ft session. Thursday, August 6th afternoon is also a strong contender.
Get ready for a good run.
Rusty
Short Range ForecastMostly dry. Warm (max 28°C on Tue afternoon, min 23°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Sun afternoon, min 22°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | ||||||||||||||
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) | SE 8 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 15 | SSW 19 | SSW 14 | SSW 17 | SW 17 | SSW 16 | SSW 16 | SSW 17 | SSW 17 | SSW 16 | SSW 17 | SSW 16 |
Wave Graph  | |||||||||||||||||||
 kJ | 204 | 314 | 314 | 461 | 561 | 569 | 553 | 784 | 758 | 612 | 1009 | 854 | 1155 | 957 | 1644 | 1817 | 2263 | 2764 | 2102 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | off | cross | glassy | cross-off | cross-on | glassy | off | cross | glassy | off |
High Tide | 11:47PM1.05m | 9:33AM1.62m | 11:59PM1.09m | 10:12AM1.67m | 00:15AM1.13m | 10:48AM1.70m | 00:34AM1.19m | 11:23AM1.68m | 00:54AM1.25m | 11:57AM1.63m | 1:15AM1.32m | 12:32PM1.53m | 1:38AM1.39m | ||||||
Low Tide | 3:14AM0.94m | 5:14PM0.14m | 3:59AM0.89m | 5:42PM0.12m | 4:39AM0.84m | 6:07PM0.13m | 5:17AM0.80m | 6:31PM0.18m | 5:56AM0.75m | 6:52PM0.24m | 6:37AM0.71m | 7:12PM0.33m | |||||||
 |  |  |  | | | | | | | | | | | | | | | | |
 | — | 6:28 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — |
 | 6:09 | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:10 | — | — | 6:10 | — | — | 6:10 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 27 | 28 | 24 | 26 | 28 | 24 | 26 | 27 | 24 | 26 | 26 | 24 | 26 | 26 | 25 | 26 | 27 | 25 |
Feels °C | 24 | 28 | 28 | 24 | 27 | 28 | 24 | 28 | 27 | 25 | 28 | 27 | 26 | 29 | 28 | 28 | 28 | 28 | 28 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 15 | SSW 14 | SSW 14 | SSW 17 | SW 17 | SSW 16 | SSW 16 | SSW 17 | SSW 17 | SSW 16 | SSW 17 | SSW 16 |
| kJ | 132 | 314 | 314 | 461 | 561 | 569 | 553 | 784 | 647 | 612 | 1009 | 854 | 1155 | 957 | 1644 | 1817 | 2263 | 2764 | 2102 |
Swell 2 Height (m) Direction Period (s) | SSW 16 | SSW 12 | SW 12 | S 26 | SW 24 | SSW 23 | SW 21 | SSE 7 | SSW 19 | SSW 18 | SSW 13 | SSW 13 | SE 6 | SW 19 | SE 6 | — | SE 7 | SE 7 | SE 6 |
| kJ | 179 | 99 | 72 | 13 | 22 | 52 | 116 | 81 | 758 | 553 | 434 | 326 | 34 | 384 | 32 | — | 39 | 65 | 56 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | SSW 21 | SSW 20 | — | SSE 6 | SE 7 | SE 6 | — | SE 7 | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 178 | 256 | — | 49 | 44 | 58 | — | 28 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SE 8 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 6 | SE 7 | SE 6 | SE 6 | ESE 6 | SE 6 | SE 7 | ESE 7 | ESE 6 | SE 6 | SE 7 | ESE 7 | ESE 7 |
| kJ | 204 | 156 | 173 | 127 | 144 | 158 | 80 | 227 | 97 | 101 | 88 | 120 | 88 | 78 | 69 | 25 | 147 | 163 | 138 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 4 | 0 | 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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