Downtowns surfForecast / Sumbawa / Indonesia

information circle12 Day Weather and Surf, issued 1 am Wednesday 10 Dec 2025 WITA
Forecast update in hr  min  s Forecast update imminent
Downtowns surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Downtowns sea temperature is
29.6° C
(Which is slightly warmer than usual)


Best Forecast Surf Conditions for Downtowns this week:

The surf forecast for Downtowns over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Dec 10) at 5PM. The primary swell is predicted to be 1.4m and 14s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Downtowns in the next 12 days are 1.5m 14s and forecast to arrive on Saturday (Dec 13) at 2AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Wednesday (Dec 17) at 2AM.

Wave TypeTime (WITA) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Wed 10th Dec)4.5ft (1.4m) 14s
Best Surf 5PM (Wed 10th Dec)4.5ft (1.4m) 14s
Most Powerful 2AM (Sat 13th Dec)5ft (1.5m) 14s

Table - best surf conditions forecast for Downtowns over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Moderate rain (total 18mm), heaviest on Wed afternoon. Warm (max 29°C on Wed morning, min 26°C on Wed night). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 36mm), heaviest during Mon afternoon. Warm (max 29°C on Sun morning, min 25°C on Mon night). Wind will be generally light.

Wednesday
10
Thursday
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
2
3
2
3
2
3
3
1
3
2
0
2
1
1
2
2
1
2
1
2
2
Swell
Height Map
Wave Height (m) & direction (?)
1.4
SW
1.4
SW
1.3
SSW
1.3
SSW
1.4
SSW
1.5
SSW
1.3
SSW
1.3
SSW
1.5
SSW
1.4
SW
1.4
SSW
1.3
SSW
1.3
SSW
1.2
SSW
1.2
SSW
1.2
SSW
1.1
SW
1
SSW
1.1
SW
1.1
SSW
0.9
SSW
Period(s) (?)141414131414131314131312121212121111111313
Wave
Graph
(?)Metric surfscale
Energy kJ (?)721711617590700845590581908689630488451390378359288261283384290
Wind
(km/h)
10
SSW
10
SSE
5
NNE
5
NNW
10
WSW
5
NNW
5
WSW
10
SW
5
N
5
NW
15
NNW
5
NNE
10
NNW
20
NE
5
NNE
5
N
10
NW
5
NW
5
W
5
NE
0
NE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
off
glassglasscross-
on
glassglasscross-
on
glasscross-
on
cross-
on
glasscrosscross-
off
cross-
off
glasscross-
on
glassoncross-
off
glass
High Tide
/ height (m)
4:06PM
1.13
2:06AM
1.42
5:01PM
1.21
3:11AM
1.21
5:50PM
1.30
4:54AM
1.03
6:32PM
1.38
6:58AM
0.95
7:08PM
1.45
8:39AM
0.95
7:40PM
1.52
9:49AM
0.99
8:12PM
1.57
Low Tide
/ height (m)
8:54AM
0.25
8:04PM
0.96
9:37AM
0.40
9:52PM
0.98
10:19AM
0.54
12:14AM
0.90
11:02AM
0.66
1:52AM
0.73
11:48AM
0.76
2:45AM
0.57
12:38PM
0.83
3:23AM
0.42
1:27PM
0.88
3:56AM
0.29
Wednesday
10
Thursday
11
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Sunrise5:46--5:46--5:47--5:47--5:48--5:48--5:48--
Sunset-6:23--6:23--6:24--6:24--6:25--6:25--6:27-
part cloud
thunderstorm
light rain
thunderstorm
cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
rain showers
part cloud
thunderstorm
thunderstorm
thunderstorm
mod rain
rain showers
part cloud
mod rain
heavy rain
Rain (mm)
-442-3131352-37592-923
Temp. °C292827272827282828282826292927292826272725
Feels °C (?)323131313032323032313129333130333230313230
  • Map Icons:
  • Break
  • 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 12 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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