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Surf Forecasts:
Marosi surfForecast / Sumba / Indonesia
16 Day Weather and Surf, issued 1 am Friday 01 May 2026 WITAForecast 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
29.1° C
(Which is slightly warmer than usual)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 Saturday (May 02) at 11PM. The primary swell is predicted to be 1.4m and 13s period with a secondary swell of 0.6m and 5s. Another secondary swell of 1.0m and 5s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Marosi in the next 16 days are 1.7m 14s and forecast to arrive on Friday (May 01) at 8AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (WITA) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sat 2nd May) | 4.5ft (1.4m) 13s |
| Best Surf | 11PM (Thu 7th May) | 3.5ft (1.1m) 18s |
| Most Powerful | 8AM (Fri 1st May) | 5.5ft (1.7m) 14s |
Table - best surf conditions forecast for Marosi over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 2mm), mostly falling on Sun night. Warm (max 28°C on Fri morning, min 25°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Tue night. Warm (max 28°C on Mon afternoon, min 25°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 1 | Saturday 2 | Sunday 3 | Monday 4 | Tuesday 5 | Wednesday 6 | Thursday 7 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
SSW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SSW 14 | SW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SW 18 | SW 17 | SW 16 | SW 20 | SW 18 | SW 18 | |
1095 | 934 | 816 | 732 | 642 | 617 | 556 | 472 | 458 | 572 | 572 | 437 | 389 | 314 | 226 | 319 | 230 | 432 | 455 | 388 | 694 | |
Wind (km/h) | |||||||||||||||||||||
cross | cross | cross | cross-on | cross | cross-off | cross-on | cross | cross-off | cross-on | cross | cross-off | cross-on | cross | cross-off | cross-on | cross | cross-off | cross-on | cross | cross-off | |
High Tide | 10:02AM2.79m | 10:42PM2.39m | 10:29AM2.85m | 11:12PM2.38m | 10:56AM2.87m | 11:41PM2.34m | 11:23AM2.85m | 00:10AM2.26m | 11:51AM2.78m | 00:40AM2.15m | 12:19PM2.67m | 1:12AM2.03m | 12:48PM2.53m | 1:50AM1.90m | |||||||
Low Tide | 4:34PM0.21m | 4:24AM0.67m | 5:03PM0.12m | 4:51AM0.67m | 5:32PM0.10m | 5:18AM0.69m | 6:01PM0.14m | 5:45AM0.74m | 6:31PM0.23m | 6:12AM0.83m | 7:04PM0.36m | 6:41AM0.94m | 7:39PM0.52m | ||||||||
 |  |  | | | | | |  | | | | | | | | | | | | | |
 | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — |
 | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:51 | — | — | 5:51 | — |
— | — | — | — | — | — | — | — | 2 | — | — | — | — | — | 2 | — | — | — | — | — | — | |
Temp °C | 28 | 28 | 27 | 28 | 28 | 27 | 27 | 28 | 27 | 27 | 28 | 27 | 27 | 27 | 27 | 27 | 28 | 27 | 27 | 28 | 27 |
29 | 29 | 29 | 31 | 30 | 31 | 29 | 30 | 30 | 29 | 30 | 29 | 30 | 29 | 30 | 30 | 30 | 29 | 29 | 29 | 29 | |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SSW 14 | SW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSE 6 | SSW 12 | SW 16 | SW 15 | SW 15 | SW 18 |
 kJ | 1095 | 934 | 816 | 732 | 642 | 617 | 556 | 472 | 458 | 572 | 572 | 437 | 389 | 314 | 226 | 41 | 117 | 432 | 262 | 301 | 694 |
Swell 2 Height (m) Direction Period (s) | W 18 | W 18 | — | SSE 5 | W 16 | SE 5 | SSE 4 | W 14 | SSE 5 | SSE 4 | SSE 5 | SSE 5 | SE 5 | S 6 | SE 5 | SW 12 | SW 17 | SSE 7 | SW 20 | SW 18 | SSE 6 |
| kJ | 6 | 6 | — | 10 | 5 | 13 | 8 | 4 | 18 | 7 | 13 | 18 | 6 | 11 | 21 | 142 | 230 | 58 | 455 | 388 | 38 |
Swell 3 Height (m) Direction Period (s) | — | — | — | W 16 | — | W 16 | W 14 | — | SSW 16 | — | — | SW 22 | WSW 21 | SW 20 | S 8 | SW 18 | SW 21 | SSW 11 | SSE 6 | SW 11 | SW 14 |
| kJ | — | — | — | 5 | — | 5 | 4 | — | 25 | — | — | 18 | 44 | 97 | 29 | 319 | 117 | 84 | 39 | 31 | 245 |
Wind waves Height (m) Direction Period (s) | SSE 5 | SE 4 | SE 5 | SE 5 | SSE 5 | ESE 5 | SE 5 | SE 4 | SE 5 | SE 4 | SE 5 | — | — | SE 5 | SE 5 | ESE 5 | SSE 5 | ESE 5 | SE 5 | SSE 6 | SE 6 |
| kJ | 14 | 16 | 24 | 38 | 10 | 47 | 25 | 16 | 51 | 23 | 31 | — | — | 15 | 79 | 33 | 49 | 47 | 30 | 39 | 108 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 134 | 137 | 88 | 20 | 134 | 0 | 22 | 134 | 0 | 134 | 134 | 0 | 20 | 13 | 0 | 22 | 134 | 0 | 22 | 134 | 0 |
Best forecast wave conditions in Sumba | |||||||||||||||||||||
Best forecast wave conditions in Indonesia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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 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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