Cobblestones Surf Forecast

/ Sumbawa (17 surf breaks) /

Indonesia (168 surf breaks)

Surf Forecasts:

Cobblestones surfForecast / Sumbawa / Indonesia

12 Day Weather and Surf, issued 1 pm Thursday 28 Aug 2025 WITA

Forecast update in hr min s Forecast update imminent

Cobblestones surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Today's Cobblestones sea temperature is 27.2° C
(Which is slightly warmer than usual)

Best Forecast Surf Conditions for Cobblestones this week:

The surf forecast for Cobblestones over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 28) at 8PM. The primary swell is predicted to be 2.1m and 13s period. The wind is predicted to be cross-shore as the swell arrives.

The most powerful waves expected at Cobblestones in the next 12 days are 1.6m 18s and forecast to arrive on Tuesday (Sep 02) at 2AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 6s period and expected on Tuesday (Sep 02) at 11PM.

Wave Type	Time (WITA) & Date	Wave Height & Period
Next good surf (1 star+)	8PM (Thu 28th Aug)	7ft (2.1m) 13s
Best Surf	8PM (Thu 28th Aug)	7ft (2.1m) 13s
Most Powerful	2AM (Tue 2nd Sep)	5ft (1.6m) 18s

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

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Short Range Forecast Mostly dry. Warm (max 27°C on Thu afternoon, min 23°C on Sat night). Wind will be generally light.											Days 3-6 Weather Summary Mostly dry. Warm (max 29°C on Mon morning, min 24°C on Sun night). Wind will be generally light.
	Thu 28		Friday 29			Saturday 30			Sunday 31			Monday 01			Tuesday 02			Wednesday 03
	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM
Rating (10 max)	!	3	2	0	1	1	1	2	2	1	3	3	3	4	3	3	4	2	2	2	2
Swell Height Map See all maps
Wave Height (m) & direction (?)	SSW	SSW	SSW	SSW	SSW	SSW	SSW	S	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW
Period(s) (?)	13	13	12	12	12	11	11	8	19	18	18	16	19	18	16	16	15	15	15	14	13
Wave Graph (?)
Energy (?)	1452	1275	595	487	266	247	261	223	264	385	508	751	1017	1624	1285	1287	1010	850	871	657	595
Wind (km/h)	SSE	SSE	SSE	S	SSE	SSE	S	SSE	SE	SSE	ENE	SE	SE	E	ESE	SE	E	ESE	SE	ESE	SE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross	cross	cross	cross	cross	cross	cross	glass	cross- off	cross	off	cross- off	cross- off	off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off
High Tide / height (m)		1:01AM 2.84	1:16PM 2.36		1:24AM 2.72	1:41PM 2.13		1:48AM 2.56		2:07PM 1.88	2:15AM 2.38		2:37PM 1.63	2:51AM 2.18		5:09PM 1.40	4:26AM 2.00			10:06PM 1.67	7:29AM 2.08
Low Tide / height (m)	6:48PM 0.51		7:21AM 0.52	7:09PM 0.66		7:52AM 0.66	7:29PM 0.83		8:26AM 0.84	7:46PM 1.02		9:11AM 1.05	7:56PM 1.21		10:44AM 1.22	6:07PM 1.40			2:19PM 1.11	12:46AM 1.64

	Thu 28		Friday 29			Saturday 30			Sunday 31			Monday 01			Tuesday 02			Wednesday 03
Sunrise	-	-	6:09	-	-	6:09	-	-	6:07	-	-	6:07	-	-	6:07	-	-	6:07	-	-	6:05
Sunset	6:05	-	-	6:05	-	-	6:04	-	-	6:04	-	-	6:04	-	-	6:04	-	-	6:04	-	-

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Temp. °C	27	25	26	26	25	26	27	24	27	27	25	29	29	25	28	29	26	28	29	26	27
Feels °C (?)	27	26	27	26	25	27	27	25	29	28	27	31	30	27	30	29	27	27	27	25	26

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 Still cross-shore at Cobblestones (moderate winds from the S at BimaM.salahuddin 47 km from Cobblestones). 1.9m 13s groundswell from the SSW with a 0.8m 5s windswell, also from the SSW. 2 swells combining so expect closeout sets.
1 hour 54 minutes ago Cobblestones

Expand

View all

47 km away, 1 h 54 min ago

26 km/h

0.0

27.2

Air / Water (°C)

Please reload the page to see if there are any updates.

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 Cobblestones 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 Cobblestones Surf forecast

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