Mandiri Surf Forecast

/ Sumatra – Mainland (12 surf breaks) /

Indonesia (168 surf breaks) / Lat Long: (5.25° S 103.97° E)

Surf Forecasts:

Mandiri surfForecast / Sumatra – Mainland / Indonesia

12 Day Weather and Surf, issued 12 pm Thursday 23 Oct 2025 WIB

Forecast update in hr min s Forecast update imminent

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

Today's Mandiri sea temperature is 29.9° C
(Which is 1.6°C warmer than normal for this time of year)

Best Forecast Surf Conditions for Mandiri this week:

The surf forecast for Mandiri over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Oct 24) at 4AM. The primary swell is predicted to be 1.1m and 16s period with a secondary swell of 1.2m and 11s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Mandiri in the next 12 days are 2.0m 16s and forecast to arrive on Thursday (Oct 30) at 1PM. Winds are predicted to be glassy at the time the swell arrives.

Wave Type	Time (WIB) & Date	Wave Height & Period
Next good surf (1 star+)	4AM (Fri 24th Oct)	3.5ft (1.1m) 16s
Best Surf	7PM (Tue 28th Oct)	5ft (1.6m) 14s
Most Powerful	1PM (Thu 30th Oct)	6.5ft (2.0m) 16s

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

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Short Range Forecast Light rain (total 6mm), mostly falling on Fri afternoon. Warm (max 28°C on Sat morning, min 24°C on Fri night). Wind will be generally light.									Days 3-6 Weather Summary Moderate rain (total 14mm), heaviest on Mon morning. Warm (max 28°C on Sun morning, min 24°C on Mon night). Wind will be generally light.
	Thursday 23			Friday 24			Saturday 25			Sunday 26			Monday 27			Tuesday 28			Wednesday 29
	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night
Rating (10 max)	2	2	2	3	3	3	3	1	2	1	1	2	2	2	3	2	3	3	3	4	4
Swell Height Map See all maps
Wave Height (m) & direction (?)	SSW	S	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SW	SSW
Period(s) (?)	10	12	16	15	15	14	14	13	12	13	18	16	16	16	15	14	14	14	14	13	18
Wave Graph (?)
kJ (?)	315	456	567	395	542	336	350	250	187	190	194	214	306	702	631	763	857	890	840	792	1033
Wind (km/h)	WNW	NW	NW	WNW	SW	NNE	WSW	W	N	WSW	W	NNW	WSW	SW	NNE	SE	SSE	NE	SW	S	NE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross	cross	cross	glass	glass	off	glass	cross- on	cross- off	on	cross- on	cross- off	cross- on	on	glass	cross	glass	glass	glass	glass	off
High Tide / height (m)			7:44PM 1.16	8:18AM 0.76		8:13PM 1.15	8:48AM 0.71		8:42PM 1.11	9:18AM 0.66		9:13PM 1.07	9:50AM 0.62		9:44PM 1.02	10:28AM 0.57		10:21PM 0.97	11:25AM 0.55		11:07PM 0.91
Low Tide / height (m)		1:14PM 0.21	2:24AM 0.07		1:39PM 0.21	2:55AM 0.09		2:04PM 0.22	3:27AM 0.12		2:29PM 0.25		4:02AM 0.18	2:54PM 0.29		4:43AM 0.23	3:22PM 0.34		5:33AM 0.29	3:56PM 0.41

	Thursday 23			Friday 24			Saturday 25			Sunday 26			Monday 27			Tuesday 28			Wednesday 29
Sunrise	5:41	-	-	5:39	-	-	5:39	-	-	5:39	-	-	5:39	-	-	5:39	-	-	5:39	-	-
Sunset	-	5:55	-	-	5:55	-	-	5:55	-	-	5:55	-	-	5:55	-	-	5:55	-	-	5:55	-

Rain (mm)	-	-	2	-	2	-	-	-	2	1	2	-	3	4	1	3	-	-	-	1	3
Temp. °C	27	27	27	27	26	26	28	28	26	28	27	26	27	27	25	25	25	25	27	27	26
Feels °C (?)	29	31	31	31	30	30	32	31	29	31	30	30	30	30	29	29	30	29	30	31	30

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 Sumatra - Mainland

Wind Update The wind is still cross-on at Mandiri (light winds from the WSW at TanjungKarangRadinInten II 136 km from Mandiri). 1.5m 12s groundswell from the S with a 0.5m 18s long period groundswell from the SW. 2 swells combining so expect closeout sets.
3 hours 32 minutes ago Mandiri

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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 Mandiri 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 Mandiri Surf forecast

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

Mandiri is 113 km (70 miles) from the city of Kotabumi. If you plan a holiday in Indonesia - Sumatra - Mainland, look for hotels and other accommodation in Kotabumi. Kotabumi has rooms for a wide range of budgets as well as car hire and transport links.