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Surf Forecasts:

Marosi surfForecast / Sumba / Indonesia

information circle16 Day Weather and Surf, issued 7 am Monday 16 Mar 2026 WITA
Forecast update in hr  min  s Forecast update imminent
Marosi surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Marosi sea temperature is
28.5° C
 (Which is slightly cooler than normal)

Best Forecast Surf Conditions for Marosi this week:

The surf forecast for Marosi over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Mar 16) at 11PM. The primary swell is predicted to be 1.2m and 15s period with a secondary swell of 0.7m and 11s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Marosi in the next 16 days are 1.5m 14s and forecast to arrive on Monday (Mar 23) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives.

Wave TypeTime (WITA) & Date Wave Height & Period
Next good surf (1 star+)11PM (Mon 16th Mar)4ft (1.2m) 15s
Best Surf11PM (Mon 16th Mar)4ft (1.2m) 15s
Most Powerful 2PM (Mon 23rd Mar)5ft (1.5m) 14s

Table - best surf conditions forecast for Marosi over the next 16 days.

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table

Short Range Forecast Moderate rain (total 10mm), heaviest on Wed night. Warm (max 28°C on Mon morning, min 26°C on Mon night). Wind will be generally light.

Days 3-6 Weather Summary Moderate rain (total 18mm), heaviest on Thu night. Warm (max 28°C on Thu morning, min 25°C on Sat night). Wind will be generally light.

Monday
16
Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
2
3
2
2
3
2
2
3
1
0
3
0
1
2
1
0
2
1
0
2
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.2
SW
1.4
SW
1.2
SW
1.2
SW
1.4
SW
1.4
SW
1.1
SW
1.3
SW
1.2
SW
1
SW
1
SW
1.2
SW
1.1
SW
1.1
SW
0.9
SW
0.9
SW
0.9
SW
0.7
SSW
1.4
SW
1.3
SSW
1.2
SSW
Period(s) (?)161615151414131313131314131313121216141413
Wave
Graph
(?)Metric surfscale
Energy kJ (?)729894631623763671458577525342336540406394238216212217763691472
Wind
(km/h)
15
W
10
WSW
5
WNW
10
WSW
10
WSW
5
S
5
SW
10
SSE
5
NW
10
WSW
15
SW
5
WNW
10
W
10
WSW
10
NW
10
WSW
15
W
10
NW
15
W
15
W
10
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		cross-
off		cross-
on		cross-
on		glassoncross-
on		glasscross-
on		onglasscross-
on		cross-
on		cross-
off		cross-
on		cross-
on		cross-
off		crosscross-
on		cross
High Tide
/ height (m)
9:55AM
2.04
9:21PM
2.34
10:11AM
2.29
9:56PM
2.55
10:29AM
2.54
10:29PM
2.70
10:51AM
2.77
11:01PM
2.79
11:15AM
2.96
11:34PM
2.79
11:41AM
3.09
12:06AM
2.71
12:09PM
3.15
12:40AM
2.56
Low Tide
/ height (m)
3:28PM
1.13
3:54AM
0.51
3:58PM
0.84
4:17AM
0.37
4:27PM
0.55
4:42AM
0.28
4:58PM
0.29
5:07AM
0.23
5:30PM
0.09
5:33AM
0.23
6:03PM
-0.02
6:01AM
0.29
6:37PM
-0.03
Monday
16
Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunday
22
Sunrise6:07--6:07--6:07--6:07--6:07--6:07--6:07--
Sunset-6:15--6:15--6:15--6:15--6:14--6:13--6:13-
clear
thunderstorm
thunderstorm
part cloud
part cloud
rain showers
thunderstorm
rain showers
thunderstorm
part cloud
thunderstorm
thunderstorm
part cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
Rain (mm)
-12--2113-14--3325224
Temp. °C282827282827272827282827282827272726272826
Feels °C (?)303032323131313132323131313131322929282929
  • 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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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Marosi 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.

View detailed surf forecast for Marosi at:
surf-forecast.com

Information about the Marosi Surf forecast

The above surf forecast table for Marosi provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Marosi can be found by selecting the local surf guide option on the grey menu. Our Marosi 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 (Marosi) 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 Marosi 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.

Are you planning a holiday in Sumba? If you are looking for accommodation near Marosi, camping, hotels and holiday cottages in Sumba, consider staying in Adalara which is 29 km (18 miles) away.

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