Batu Karas 48 hour detailed Surf Forecast

Lat Long: 7.75° S 108.50° E

Issued: 12 am 20 Jul 2026 (local time)

Forecast update in hr min

Today's Batu Karas sea temperature is

27.0° C

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

Surf Forecasts:

How big are the waves at Batu Karas today (20 Jul):

Morning surf: Morning surf (20 Jul, local time) - 7ft (2.1m), 16s period with SSW swell.
Afternoon surf: Afternoon surf (20 Jul, local time) - 7ft (2.1m), 16s period with SSW swell.
Evening surf: Evening surf (20 Jul, local time) - 6.5ft (2.0m), 16s period with SSW swell.

The current surf forecast for Batu Karas at 8AM is: 2.1m 17s primary swell from a South-southwest direction and 1.0m 18s secondary swell from a South-southwest direction, 1.3m 7s secondary swell from a East-southeast direction (forecast issued at 12:00am July 20). The wind direction is predicted to be cross-shore.

Time (WIB) & Date	Wave Height	Wave Period
Morning (20 Jul)	7ft (2.1m)	16s
Afternoon (20 Jul)	7ft (2.1m)	16s
Evening (20 Jul)	6.5ft (2.0m)	16s

Table - waves today at Batu Karas. (Swell directed towards the surf break)

	Short Range Forecast Moderate rain (total 18mm), heaviest on Mon night. Warm (max 26°C on Mon morning, min 23°C on Tue night). Wind will be generally light.
	Monday 20								Tuesday 21								Wednesday 22
	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	10 PM
Rating (10 max)	3	3	2	2	2	2	3	2	2	2	1	1	1	1	1	0	0	0	1	0	0	0	0	0
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	SSW 15	SSW 17	SSW 17	SSW 16	SSW 16	SSW 16	SSW 16	SSW 15	SSW 15	SSW 14	SSW 14	SSW 14	SSW 14	SSW 14	SSW 14	SSW 13	SSW 13	SSW 13	SSW 13	SSW 13	SSW 13	SE 8	SE 8	SE 8
Wave Graph
kJ	1332	2705	2612	2285	2257	2228	2109	1883	1568	1301	1283	1159	969	955	802	634	615	491	414	408	402	393	470	458
Wind (km/h)	E	E	E	ESE	ESE	ESE	ESE	ESE	E	E	E	ESE	ESE	ESE	ESE	ESE	E	E	ENE	ESE	ESE	ESE	ESE	ESE
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross	cross	cross	cross	cross	cross	cross	cross	cross	cross	cross	cross	cross	cross	cross	cross	cross	cross-on	cross-on	cross	cross	cross	cross	cross
High Tide	11:50PM1.54m				11:48AM1.36m				00:27AM1.53m				12:27PM1.19m					1:06AM1.48m				1:09PM1.02m
Low Tide			5:58AM0.41m				5:58PM0.28m				6:49AM0.47m				6:25PM0.38m					7:45AM0.53m			6:52PM0.49m


	—	6:00	—	—	—	—	—	—	—	6:00	—	—	—	—	—	—	—	6:00	—	—	—	—	—	—
	—	—	—	—	—	5:44	—	—	—	—	—	—	—	5:44	—	—	—	—	—	—	—	5:44	—	—
mm	1	1	1	1	—	—	—	1	1	2	2	2	2	—	—	1	—	—	—	1	1	—	1	—
Temp °C	24	24	25	26	26	26	25	24	24	24	24	25	25	26	25	24	24	23	23	25	26	25	24	24
Feels °C	26	26	26	27	27	27	27	25	26	26	25	25	25	25	25	24	24	24	25	25	25	24	23	23
Swell 1 Height (m) Direction Period (s)	SSW 15	SSW 17	SSW 17	SSW 16	SSW 16	SSW 16	SSW 16	SSW 15	SSW 15	SSW 14	SSW 14	SSW 14	SSW 14	SSW 14	SSW 14	SSW 13	SSW 13	SSW 13	SSW 13	SSW 13	SSW 13	SSW 15	SSW 15	SSW 15
kJ	1332	2705	2612	2285	2257	2228	2109	1883	1568	1301	1283	1159	969	955	802	634	615	491	414	408	402	270	246	246
Swell 2 Height (m) Direction Period (s)	SSW 18	SSW 17	SSW 18	—	—	—	—	—	—	—	—	SSW 20	SSW 20	SSW 19	SSW 18	SSW 18	SSW 18	SSW 18	SSW 16	SSW 16	SSW 16	SSW 12	SSW 12	SSW 12
kJ	729	1098	670	—	—	—	—	—	—	—	—	37	37	70	64	106	104	31	151	149	149	158	123	121
Swell 3 Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	S 8	SW 19	SW 19	—
kJ	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	12	15	15	—
Wind waves Height (m) Direction Period (s)	SE 7	SE 7	ESE 7	ESE 7	ESE 7	ESE 7	ESE 7	ESE 7	ESE 7	ESE 7	ESE 7	ESE 7	ESE 7	SE 7	SE 7	SE 7	SE 7	SE 7	SE 7	SE 7	SE 7	SE 8	SE 8	SE 8
kJ	135	131	150	145	145	150	150	154	170	205	243	302	320	261	254	258	251	221	228	234	262	393	470	458
Nearest Offshore or Glassy	Batu Mandi Java - Central	Batu Mandi Java - Central	Batu Mandi Java - Central	Benkunqut Sumatra - Mainland	Benkunqut Sumatra - Mainland	Benkunqut Sumatra - Mainland	Loji Java - West	Loji Java - West	Batu Mandi Java - Central	Batu Mandi Java - Central	Karang Nini Java - Central	Benkunqut Sumatra - Mainland	Benkunqut Sumatra - Mainland	Mushroom Beach - Nusa Lembongan Bali - Nusa Lembongan	Samudra Java - West	Loji Java - West	Loji Java - West	Batu Mandi Java - Central	Batu Hiu Java - Central	Benkunqut Sumatra - Mainland	Benkunqut Sumatra - Mainland	Benkunqut Sumatra - Mainland	Samudra Java - West	Loji Java - West
Rating (10 max)	4	4	4	4	4	4	4	4	4	3	3	4	4	2	3	3	3	3	3	4	3	3	3	4
Distance (km)	18	18	18	519	519	519	230	230	18	18	25	519	519	770	233	230	230	18	8	519	519	519	233	230
Best forecast wave conditions in Central Java	Karang Nini	Karang Nini	Karang Nini						Batu Mandi	Karang Nini	Karang Nini							Karang Nini	Karang Nini
Rating (10 max)	4	4	4						4	3	3							3	3
Best forecast wave conditions in Indonesia	Asu Nias	Turtle Island Banyak Islands	Thailand Simeulue Island	Thailand Simeulue Island	Thailand Simeulue Island	Thailand Simeulue Island	Thailand Simeulue Island	Thailand Simeulue Island	Thailand Simeulue Island	Thailand Simeulue Island	Thailand Simeulue Island	Thailand Simeulue Island	Thailand Simeulue Island	Thailand Simeulue Island	Benkunqut Sumatra - Mainland	Thailand Simeulue Island	Thailand Simeulue Island	Karang Nyimbor Sumatra - Mainland	Jimmys Sumatra - Mainland	Benkunqut Sumatra - Mainland	Turtle Island Banyak Islands	Turtle Island Banyak Islands	Super Suck Sumbawa	Indicators point Java - West
Rating (10 max)	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	3	3	4	4	4	3	3	3	4
Header Global	Papatowai New Zealand	Otago Peninsula - Allans Beach New Zealand	Otago Peninsula - Allans Beach New Zealand	Otago Peninsula - Allans Beach New Zealand	Ning Nong Point and Reef New Zealand	Ning Nong Point and Reef New Zealand	Ning Nong Point and Reef New Zealand	Last Chance New Zealand	Seconds (White Rock) New Zealand	Diners Beach New Zealand	Asu Indonesia	Papatowai New Zealand	Asu Indonesia	Aganoa Beach Samoa	Aganoa Beach Samoa	Bruces Beauties South Africa	Van Stadens Mouth South Africa	Cobblestones Australia	Cobblestones Australia	Cobblestones Australia	Cobblestones Australia	Injidup Carpark Australia	Bancoora Australia	Cathedral Rock Australia
Rating (10 max)	7	6	5	5	7	6	5	5	5	5	4	5	4	4	4	4	5	5	5	7	6	5	5	6

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

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Batu Karas 48 hour detailed Surf Forecast

How big are the waves at Batu Karas today (20 Jul):

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