Batu Karas Surf Break

Lat Long: 7.75° S 108.50° E

Batu Karas Surf Forecast and Surf Report

Issued: 6 am 17 Aug 2026 (local time)

Forecast update in  hr  min

Today's Batu Karas sea temperature is
26.7° C
0.3° 

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


Batu Karas surf forecast from 17 Aug 2026:

  • Most powerful swell: Wednesday 19 Aug, 4PM (local time) - 10ft (3.0m), 17s period, SSW swell with 5,534 kJ wave energy.

Best Forecast Surf Conditions for Batu Karas this week:

The most powerful waves expected at Batu Karas in the next 16 days are 3.0m 17s and forecast to arrive on Wednesday (Aug 19) at 4PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Monday (Aug 24) at 10AM.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 4PM (Wed 19th Aug)10ft (3.0m) 17s

Table - best surf conditions forecast for Batu Karas over the next 16 days.


Short Range Forecast

Light rain (total 2mm), mostly falling on Mon night. Warm (max 26°C on Mon morning, min 23°C on Mon night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 2mm), mostly falling on Sat night. Warm (max 26°C on Thu morning, min 24°C on Thu afternoon). Wind will be generally light.

Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
2
3
2
3
3
3
3
3
2
3
3
2
2
3
2
3
1
1
1
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.4
SSW
14
1.3
SSW
13
1.3
SSW
17
2.3
SSW
16
2
SSW
16
2.5
SSW
19
3
SSW
17
3
SSW
17
3
SSW
16
2.5
SSW
16
2.5
SW
16
2.2
SSW
16
2.5
SSW
17
2.5
SSW
16
2.5
SSW
16
2.1
SSW
15
2.1
SSW
15
1.8
SSW
15
1.7
SSW
14
1.7
SSW
14
1.6
SSW
18
Wave Graph
Metric surfscale
Energy kJ
811
553
984
2615
1904
4574
5046
5534
4537
3832
3158
2379
3995
3506
2999
2144
1821
1409
1175
1159
1585
Wind (km/h)
10
ESE
15
SE
15
E
15
ESE
20
SE
10
ENE
15
ESE
15
SE
15
ESE
20
ESE
15
SE
15
ESE
20
ESE
20
ESE
15
ESE
15
E
20
SE
20
ESE
25
ESE
20
ESE
20
ESE
Wind State
cross
cross-off
cross
cross
cross-off
cross-on
cross
cross-off
cross
cross
cross-off
cross
cross
cross
cross
cross
cross-off
cross
cross
cross
cross
High Tide
10:45AM1.47m
11:08PM1.67m
11:18AM1.32m
11:38PM1.61m
11:49AM1.16m
00:09AM1.53m
12:20PM1.01m
00:43AM1.42m
12:53PM0.86m
1:25AM1.31m
1:53PM0.73m
2:36AM1.21m
Low Tide
4:46PM0.20m
5:28AM0.28m
5:11PM0.28m
6:07AM0.36m
5:32PM0.38m
6:49AM0.45m
5:51PM0.47m
7:43AM0.55m
6:05PM0.57m
9:18AM0.63m
6:01PM0.66m
12:05PM0.58m
part cloud
clear
rain showers
part cloud
part cloud
part cloud
part cloud
part cloud
rain showers
part cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
rain showers
rain showers
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:54
5:54
5:52
5:52
5:52
5:52
5:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:45
5:45
5:45
5:45
5:45
5:45
5:45
 mm
1
1
2
1
Temp °C
26
26
25
26
26
24
26
25
25
26
25
25
26
25
25
26
25
25
26
25
25
Feels °C
29
27
28
27
27
26
27
26
28
27
26
28
26
26
27
27
25
26
26
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)
Map placeholder
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Information about the Batu Karas Surf forecast

The above surf forecast table for Batu Karas provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Batu Karas can be found by selecting the local surf guide option on the grey menu. Our Batu Karas 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 (Batu Karas) 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 Batu Karas 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.

Batu Karas is 43 km (27 miles) from the city of Sidareja. If you plan a holiday in Central Java, look for hotels and other accommodation in Sidareja. Sidareja has rooms for a wide range of budgets as well as car hire and transport links.

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