Downtowns Surf Forecast

/ Sumbawa (17 surf breaks) /

Indonesia (168 surf breaks)

Surf Forecasts:

Downtowns surfForecast / Sumbawa / Indonesia

12 Day Weather and Surf, issued 1 pm Thursday 18 Sep 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 27.5° 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 Thursday (Sep 18) at 5PM. The primary swell is predicted to be 2.0m and 13s 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 2.2m 18s and forecast to arrive on Wednesday (Sep 24) at 2PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 7s period and expected on Thursday (Sep 25) at 5AM.

Wave Type	Time (WITA) & Date	Wave Height & Period
Next good surf (1 star+)	5PM (Thu 18th Sep)	6.5ft (2.0m) 13s
Best Surf	5PM (Thu 18th Sep)	6.5ft (2.0m) 13s
Most Powerful	2PM (Wed 24th Sep)	7ft (2.2m) 18s

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

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Short Range Forecast Light rain (total 3mm), mostly falling on Thu afternoon. Warm (max 28°C on Thu afternoon, min 24°C on Sat night). Wind will be generally light.											Days 3-6 Weather Summary Mostly dry. Warm (max 29°C on Wed morning, min 24°C on Sun night). Wind will be generally light.
	Thu 18		Friday 19			Saturday 20			Sunday 21			Monday 22			Tuesday 23			Wednesday 24
	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM
Rating (10 max)	4	3	2	3	3	2	4	4	2	3	4	2	2	4	1	2	4	4	4	4	3
Swell Height Map See all maps
Wave Height (m) & direction (?)	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SW	SW	SW	SW	SW	SW
Period(s) (?)	13	13	12	12	13	16	16	15	16	16	15	14	14	14	13	20	19	18	17	16	16
Wave Graph (?)
kJ (?)	1346	1137	787	443	536	717	1244	1550	2300	2151	1693	1504	1210	1095	915	1363	1876	2782	1710	1492	1096
Wind (km/h)	SE	ESE	S	ESE	SE	S	SSE	ESE	SSW	SSE	E	SSW	S	SE	SSW	S	ESE	SSE	ESE	ESE	S
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- off	cross- off	cross	off	cross- off	cross	cross- off	cross- off	cross- on	cross	off	cross- on	cross	cross- off	cross- on	cross	off	cross- off	off	off	cross
High Tide / height (m)		10:16PM 1.20	8:57AM 1.52		10:28PM 1.29	9:44AM 1.55		10:43PM 1.39	10:24AM 1.54		10:59PM 1.47	11:01AM 1.51		11:16PM 1.55	11:35AM 1.44		11:33PM 1.60	12:08PM 1.35		11:52PM 1.63	12:41PM 1.24
Low Tide / height (m)	3:32PM 0.26	3:06AM 0.87		4:01PM 0.26	3:49AM 0.72		4:27PM 0.30	4:26AM 0.58		4:49PM 0.35	4:59AM 0.47		5:09PM 0.42		5:32AM 0.38	5:28PM 0.50		6:04AM 0.32	5:45PM 0.58		6:37AM 0.29

	Thu 18		Friday 19			Saturday 20			Sunday 21			Monday 22			Tuesday 23			Wednesday 24
Sunrise	-	-	6:03	-	-	6:03	-	-	6:03	-	-	6:03	-	-	6:01	-	-	6:01	-	-	6:01
Sunset	6:08	-	-	6:08	-	-	6:08	-	-	6:08	-	-	6:07	-	-	6:07	-	-	6:07	-	-

Rain (mm)	3	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	1	1	-
Temp. °C	28	26	28	28	26	28	28	27	27	28	26	28	28	26	27	28	26	29	29	26	28
Feels °C (?)	29	28	31	29	28	31	30	29	29	29	29	30	28	28	28	27	27	30	31	28	29

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

Recent Eyeball Surf Reports for Sumbawa

Wind Update The wind is still cross-off at Downtowns (light winds from the NNE at SumbawaBesarBrangbiji 81 km from Downtowns). A 1.8m groundswell from the SSW
1 hour 58 minutes ago Downtowns

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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 Downtowns 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 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.