Tropical's surfForecast / Sumbawa / Indonesia

information circle12 Day Weather and Surf, issued 1 pm Saturday 20 Dec 2025 WITA
Forecast update in hr  min  s Forecast update imminent
Tropical's surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Tropical's sea temperature is
29.4° C
(Which is normal for this time of year)


Best Forecast Surf Conditions for Tropical's this week:

The surf forecast for Tropical's over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Dec 20) at 8PM. The primary swell is predicted to be 1.2m and 11s period with a secondary swell of 0.6m and 8s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Tropical's in the next 12 days are 1.8m 17s and forecast to arrive on Wednesday (Dec 24) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives.

Wave TypeTime (WITA) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Sat 20th Dec)4ft (1.2m) 11s
Best Surf11PM (Wed 24th Dec)6ft (1.8m) 17s
Most Powerful11PM (Wed 24th Dec)6ft (1.8m) 17s

Table - best surf conditions forecast for Tropical's over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Moderate rain (total 18mm), heaviest on Sat night. Warm (max 29°C on Sun morning, min 27°C on Sat night). Wind will be generally light.

Days 3-6 Weather Summary Moderate rain (total 18mm), heaviest on Tue night. Warm (max 29°C on Tue afternoon, min 27°C on Tue night). Wind will be generally light.

Sat
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
1
2
2
0
1
2
0
1
2
0
2
3
1
4
4
2
3
3
1
3
2
Swell
Height Map
Wave Height (m) & direction (?)
1.2
SW
1.2
SW
1
SSW
1
SSW
0.9
SSW
0.7
SW
1
SSW
0.9
SW
1.1
SSW
1.1
SW
1.1
SW
1.4
SSW
1
SSW
1.7
SSW
1.8
SSW
1.7
SSW
1.6
SSW
1.4
SSW
1.4
SSW
0.9
SW
1.2
SW
Period(s) (?)111110101015121411131313181615141413131818
Wave
Graph
(?)Metric surfscale
Energy kJ (?)360341220212154220280293313412406659596146914501191915659659528881
Wind
(km/h)
5
SSW
0
WSW
10
W
10
SSW
10
WSW
10
WSW
20
WSW
15
WNW
15
W
15
WSW
10
W
15
W
15
WSW
10
WNW
15
W
10
SW
5
WNW
15
W
15
WSW
15
W
15
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
glasscross-
off
cross-
on
crosscross-
off
crosscross-
off
cross-
off
crosscross-
off
cross-
off
crosscross-
off
cross-
off
crossglasscross-
off
crosscross-
off
cross-
off
High Tide
/ height (m)
10:16PM
2.63
11:17AM
2.09
10:50PM
2.67
11:48AM
2.14
11:22PM
2.68
12:19PM
2.17
11:55PM
2.65
12:51PM
2.20
12:27AM
2.57
1:24PM
2.22
1:02AM
2.45
1:58PM
2.24
1:40AM
2.28
Low Tide
/ height (m)
4:07PM
0.89
5:02AM
0.20
4:41PM
0.84
5:33AM
0.17
5:15PM
0.82
6:04AM
0.18
5:50PM
0.83
6:35AM
0.22
6:25PM
0.85
7:05AM
0.30
7:04PM
0.89
7:36AM
0.41
7:48PM
0.93
8:09AM
0.54
Sat
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
Sunrise--5:50--5:52--5:52--5:52--5:52--5:54--5:54
Sunset6:30--6:30--6:30--6:30--6:31--6:31--6:32--
thunderstorm
thunderstorm
part cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
part cloud
thunderstorm
clear
thunderstorm
thunderstorm
part cloud
Rain (mm)
23--1217239112--2-12-
Temp. °C282829292828292728292729292729292829292828
Feels °C (?)313332323232323031313032313032323332313130
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Tropical's 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.


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Information about the Tropical's Surf forecast

The above surf forecast table for Tropical's provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Tropical's can be found by selecting the local surf guide option on the grey menu. Our Tropical's 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 (Tropical's) 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 Tropical's 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.

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