Downtowns Surf Break

Lat Long: 8.85° S 116.77° E

Downtowns Surf Forecast and Surf Report

Issued: 1 am 10 Aug 2026 (local time)

Forecast update in  hr  min

Today's Downtowns sea temperature is
26.5° C
0.2° 

Downtowns surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Downtowns surf forecast from 9 Aug 2026:

  • Best quality surf: Monday 10 Aug, 5PM (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 5,927 kJ wave energy.
  • Next surfable swell (1★+): Monday 10 Aug, 8AM (local time) - 6.5ft (2.0m), 14s 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 10) at 8AM. The primary swell is predicted to be 2.0m and 14s period with a secondary swell of 1.2m and 20s. 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 1.1m 5s period and expected on Thursday (Aug 13) at 2PM.

Wave TypeTime (WITA) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Mon 10th Aug)6.5ft (2.0m) 14s
Best Surf 5PM (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 get into it. The charts have been lighting up for a solid run of southwest swell, and this stretch has some proper days lined up for us. We’re looking at a dynamic, drawn-out pulse of energy that’s going to keep things interesting at Downtowns for the better part of two weeks.

It’s a reef setup that’s fairly consistent and takes on a good amount of swell, and with the southwest direction coming in right on its optimum, this is a spot that’s going to be converting that open-ocean juice into some lined-up walls. The water’s sitting at 79.7°, which is pretty much standard for this time of year, so nothing wild there—just your typical warm tropical bath.

First up, we’ve got the opening gambit on Monday morning. It’s a bit of a slow burner to start, with a 5.2ft SSW swell and a 19-second period. That long-period groundswell has some real push to it, but the tide might be playing a bit of a trick on us. Expect a touch of cross-shore ripple on the surface, but the energy is there. It’s not a total write-off, but the afternoon is where the real magic starts. The swell jumps to a hefty 9.8ft, still from the SSW, and the wind swings to a light cross-off. That’s the combo we all want to see—pulses of clean, powerful reef waves rolling through with no chop. This is the standout of the first few days for the more experienced crew. 9.8ft is proper size and well into the expert zone, so if you’re not confident, sit this one out and watch from the channel.

Tuesday keeps the size up—still a thumping 9.8ft in the morning—but the wind gets a bit more crossy and bumps the surface up. It’s still surfable, but the clean lines of Monday afternoon will be a bit harder to find. The afternoon drops to 8.2ft but the wind stays cross-shore, so the quality is muted. It’ll be lumpy and challenging, a day for the guys who don’t mind a wrestle.

Wednesday sees the swell back off a touch to 5.9ft in the morning, but the wind turns light and cross-off. That’s a recipe for a much cleaner, more user-friendly session. The period has dropped to 14 seconds, so it’s not as powerful, but the shape should be fun and the surface will be smooth. The afternoon bumps back up to 6.6ft with a clean cross-off breeze—a solid, quality day of waves without the intimidation factor of the bigger days.

Thursday and Friday are a bit of a mixed bag. We’ve got consistent 7.2ft to 7.9ft swell, but the wind is mostly cross, keeping a little texture on the face. Thursday afternoon is the pick of those two, with a cross-off wind cleaning it up nicely on the 7.9ft swell. Friday is more of the same but slightly smaller, and the morning has that cross-shore bump. Nothing special, but there are waves to be had.

The weekend brings a consistent 6.9ft to 7.2ft SSW swell, but the wind is the story. Saturday morning has a cross-shore ripple, but Sunday afternoon turns glassy with a slight air and a 3.1 mph wind. That’s the window to be in the water. Clean, lined-up reef waves on a steady 6.9ft, 16-second swell. That’s going to be a beautiful, serene session.

The swell starts to fade a touch into Monday, dropping to 4.9-5.2ft, but it’s glassy. Long-period energy is still there with 14 seconds, but the size is down. It’ll be a bit smaller and softer, but still clean and fun for those looking for an easier paddle.

Now, here’s where it gets interesting. Tuesday sees a new, longer-period swell pulse arrive—a 22-second monster of a groundswell. The height is only 2.6ft in the morning, but that long period carries a surprising amount of energy for its size. This kind of swell at a reef like Downtowns can produce some sneaky, well-defined lines. The energy value is still in the moderate range (1556), so don't expect a huge day, but the quality could be special. Tuesday afternoon builds to 4.3ft and the energy picks up to 2390.

But the real second-week standout is that Wednesday. The swell fills in to a solid 8.2ft from the SW with a 17-18 second period. Combined energy jumps right up to 4448, which is strong, and the wind is a light, cross-off breeze. That is a proper day. Consistent size, good period, and clean conditions—this is the one to circle on the calendar for more than a week out. It’s a long-range call, so treat it as promising rather than locked, but the potential is huge.

After that, the swell stays in the 7.9ft to 8.2ft range with clean conditions off and on, but the wind picks up a bit more on the afternoons. There’s still plenty of action. The final Saturday and Sunday of the window have some quality in there as well. Saturday afternoon looks clean with an offshore breeze on 6.9ft, and then Sunday brings the energy back

Short Range Forecast

Mostly dry. Warm (max 27°C on Wed afternoon, min 23°C on Mon night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 26°C on Thu morning, min 23°C on Thu night). Wind will be generally light.

Monday
10
Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
5
5
4
3
4
4
4
4
3
4
4
3
3
4
3
3
4
3
4
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.6
SSW
19
3
SSW
18
3
SSW
17
3
SSW
17
2.5
SSW
16
2.5
SSW
16
1.8
SSW
14
2
SSW
16
1.7
SSW
14
2.2
SSW
17
2.4
SSW
16
2.4
SSW
16
2.1
SSW
16
1.9
SSW
15
1.7
SSW
15
2.1
SSW
17
2.2
SSW
17
2.2
SSW
16
2.1
SSW
16
2.1
SSW
16
1.9
SSW
15
Wave Graph
Metric surfscale
Energy kJ
1867
4951
5927
4774
3175
3079
1285
1933
1065
2507
3127
2801
2028
1496
1275
2564
2790
2506
2164
2054
1475
Wind (km/h)
10
SSW
10
SSE
10
ESE
10
S
15
S
15
SE
10
SSE
5
SE
10
ESE
5
S
10
S
10
ESE
10
SSW
10
S
10
SE
10
S
10
S
5
ESE
10
S
5
SSE
5
ESE
Wind State
cross
cross-off
cross-off
cross
cross
cross-off
cross-off
cross-off
cross-off
cross
cross-off
cross-off
cross
cross
cross-off
cross
cross
off
cross
glassy
off
High Tide
11:09PM1.05m
8:54AM1.78m
11:21PM1.13m
9:50AM1.83m
11:42PM1.21m
10:40AM1.83m
00:06AM1.31m
11:25AM1.76m
00:31AM1.41m
12:08PM1.64m
00:57AM1.49m
12:49PM1.47m
1:23AM1.54m
Low Tide
4:00PM0.07m
2:12AM0.97m
4:39PM0.01m
3:28AM0.87m
5:14PM0.01m
4:26AM0.75m
5:45PM0.06m
5:17AM0.64m
6:14PM0.16m
6:05AM0.56m
6:39PM0.28m
6:51AM0.52m
7:01PM0.40m
clear
clear
part cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:24
6:24
6:24
6:22
6:22
6:22
6:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:10
6:10
6:10
6:10
6:10
6:10
6:10
 mm
Temp °C
26
26
24
26
26
24
26
27
24
26
26
24
25
26
24
26
26
25
26
27
25
Feels °C
28
27
25
27
25
25
27
27
25
28
26
25
27
26
27
28
26
28
28
28
29
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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