Marosi surfForecast / Sumba / Indonesia

information circle12 Day Weather and Surf, issued 7 pm Wednesday 30 Jul 2025 WITA
Forecast update in -0hr 10 min 01 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
81.0°F
(Which is 1.8°F warmer than normal for this time of year)


Best Forecast Surf Conditions for Marosi this week:

The surf forecast for Marosi over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 01) at 8AM. The primary swell is predicted to be 4ft and 13s period with a secondary swell of 1ft and 19s. Another secondary swell of 3ft and 7s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Marosi in the next 12 days are 8ft 17s and forecast to arrive on Wednesday (Aug 06) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 5ft 7s period and expected on Monday (Aug 04) at 2AM.

Wave TypeTime (WITA) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Fri 1st Aug)4ft (1.2m) 13s
Best Surf 8AM (Tue 5th Aug)8ft (2.4m) 16s
Most Powerful 5PM (Wed 6th Aug)8ft (2.5m) 17s

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

Updates in -0 hr 10 min 01 s Forecast update imminent

Short Range Forecast Mostly dry. Warm (max 81°F on Fri afternoon, min 75°F on Wed night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 79°F on Sat night, min 73°F on Sun night). Wind will be generally light.

Thursday
31
Friday
01
Saturday
02
Sunday
03
Monday
04
Tuesday
05
Wed
06
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
Swell
Height Map
Wave Height (ft) & direction (?)
8
SSW
7
SSW
6
SSW
4.5
SSW
4
SSW
2.5
SSW
3.5
SW
4.5
SSW
4.5
SW
4.5
SW
4.5
SW
4.5
SW
3.5
SW
7
SW
7.5
SW
7.5
SW
8
SW
7.5
SW
8
SSW
8
SSW
8
SSW
Period(s) (?)141414131318161515151414161617161615151517
Wave
Graph
(?)Metric surfscale
Energy (?)228316741321757761910876853105381113861075119124233085286430542922362432844002
Wind
(mph)
10
SE
10
SE
10
SE
10
SE
10
SE
10
SE
5
NE
10
S
5
SSE
5
E
10
SSE
15
SE
5
E
10
SE
15
SE
5
NE
5
S
10
SE
5
ESE
10
SSE
10
SSE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
cross-
on
cross-
on
crosscross-
on
crossglasscross-
on
cross-
on
cross-
off
cross-
on
crosscross-
off
cross-
on
cross-
on
glasscross-
on
cross-
on
crosscross-
on
cross-
on
High Tide
/ height (ft)
1:59AM
8.46
2:02PM
7.25
2:28AM
8.17
2:36PM
6.46
3:00AM
7.81
3:16PM
5.68
3:38AM
7.35
4:22PM
4.95
4:37AM
6.96
7:15PM
4.66
6:16AM
6.76
9:27PM
5.15
7:51AM
7.05
Low Tide
/ height (ft)
8:10AM
2.33
8:03PM
2.1
8:48AM
2.66
8:26PM
2.72
9:33AM
3.08
8:51PM
3.31
10:37AM
3.45
9:17PM
3.94
12:34PM
3.54
10:03PM
4.53
2:35PM
3.02
1:07AM
4.82
3:27PM
2.33
Thursday
31
Friday
01
Saturday
02
Sunday
03
Monday
04
Tuesday
05
Wed
06
Sunrise-6:18--6:18--6:18--6:18--6:18--6:18--6:16-
Sunset--6:00--6:00--6:00--6:00--6:00--6:00--6:00
part cloudpart cloudcloudpart cloudclearpart cloudclearclearpart cloudclearclearpart cloudclearclearclearclearclearclearpart cloudpart cloudclear
Rain (in)
---------------------
Temp. °F757775757981777979797979777779777779757779
Feels °F (?)727773778182818184868281757779777981778181

Days 7-12 Weather Summary

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Eyeball surf reportRecent Eyeball Surf Reports for Sumba

  1. weather stationWind Update The wind is still cross-on at Marosi (fresh winds from the SE at ASCATB119E10S 42 miles from Marosi). A 7ft groundswell from the SSW

    Marosi
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FREE! Surf-Forecast.com widget for your website

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.


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 12 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.

A very large earthquake (M8.8) off Kamchatka in the far east of Russia means there are tsunami warnings in place for the Pacific coast of Japan and the wider Pacific region, even as far away as New Zealand

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