4 Bobs Surf Forecast

/ Mentawi Islands (22 surf breaks) /

Indonesia (168 surf breaks)

Surf Forecasts:

4 Bobs surfForecast / Mentawi Islands / Indonesia

48hr Weather and Surf, issued 12 am Saturday 30 Aug 2025 WIB

Forecast update in hr min s Forecast update imminent

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

Today's 4 Bobs sea temperature is 29.9° C
(Which is 1.0°C warmer than normal for this time of year)

How big are the waves at 4 Bobs today?

The current surf forecast for 4 Bobs at 4AM is: 1.7m 12s primary swell from a South direction and 0.3m 20s secondary swell from a Southwest direction (forecast issued at 12:00am August 30). The wind direction is predicted to be cross-offshore and the swell rating is 3.

Time (WIB) & Date	Wave Height	Wave Period
Morning (30 Aug)	5.5ft (1.7m)	12s
Afternoon (30 Aug)	5ft (1.6m)	11s
Evening (30 Aug)	5ft (1.6m)	11s

Table - waves today at 4 Bobs. (Swell directed towards the surf break)

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

		Saturday 30								Sunday 31								Monday 01
	10 PM	1 AM	4 AM	7 AM	10 AM	1 PM	4 PM	7 PM	10 PM	1 AM	4 AM	7 AM	10 AM	1 PM	4 PM	7 PM	10 PM	1 AM	4 AM	7 AM	10 AM	1 PM	4 PM	7 PM
Rating (10 max)	1	2	3	3	3	2	2	1	1	1	2	3	2	1	1	1	1	3	4	4	4	3	4	4
Swell Height Map See all maps
Wave Height (m) & direction (?)	S	S	S	S	S	S	S	S	S	S	S	S	S	S	S	SW	SW	SSW	SSW	SSW	SW	SW	SW	SW
Period(s) (?)	12	12	12	12	12	11	11	11	11	11	11	10	10	10	10	16	16	19	19	18	17	17	16	16
Wave Graph (?)
Energy (?)	892	935	852	889	825	780	802	825	930	894	933	941	975	1028	1203	1281	1206	1423	1444	1403	1563	1531	1555	1361
Wind (km/h)	ESE	E	ENE	ENE	ENE	ESE	S	SSW	S	SE	SE	SE	SSE	SSE	SSE	SE	SSE	SE	E	ESE	E	E	ESE	WSW
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- on	cross	cross- off	cross- off	cross- off	cross	on	on	on	cross- on	cross- on	glass	cross- on	on	on	cross- on	cross- on	cross- on	glass	glass	glass	cross	glass	glass
High Tide / height (m)	9:59PM 0.99				9:38AM 0.72					10:33PM 0.93			9:50AM 0.63					11:22PM 0.86			10:00AM 0.54
Low Tide / height (m)				4:05AM 0.28			3:47PM 0.18					4:50AM 0.34				4:21PM 0.23				5:51AM 0.41				5:04PM 0.30

		Saturday 30								Sunday 31								Monday 01
Sunrise	-	-	-	6:20	-	-	-	-	-	-	-	6:20	-	-	-	-	-	-	-	6:20	-	-	-	-
Sunset	-	-	-	-	-	-	6:24	-	-	-	-	-	-	-	6:24	-	-	-	-	-	-	-	6:24	-

Rain (mm)	3	2	1	2	4	1	1	4	1	4	2	2	1	3	2	1	1	-	1	1	-	1	1	-
Temp. °C	26	26	26	26	26	27	27	26	27	26	25	25	26	26	26	26	26	26	26	26	27	27	27	27
Feels °C (?)	28	29	28	29	29	31	30	28	30	29	28	29	29	28	28	28	29	29	31	30	31	31	31	31

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 Mentawi Islands

Wind Update Calm condsitions have become offshore at 4 Bobs (light winds from the N at Minangkabau Airport 165 km from 4 Bobs). 1.4m 12s groundswell from the S with a 0.3m 15s groundswell from the SSE. 2 swells combining to make bigger set waves.
1 hour 10 minutes ago 4 Bobs
Wind Update Offshore wind reported 166 km from Kandui Left (light winds from the N at Minangkabau Airport 166 km from Kandui Left). 1.4m 12s groundswell from the S with a 0.3m 15s groundswell from the SSE. 2 swells combining to make bigger set waves.
1 hour 10 minutes ago Kandui Left

Expand

View all

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 4 Bobs 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.