Batu Karas Surf Break

Lat Long: 7.75° S 108.50° E

Batu Karas Surf Forecast and Surf Report

Issued: 12 am 06 Aug 2026 (local time)

Forecast update in  hr  min

Today's Batu Karas sea temperature is
24.7° C
2.0° 

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 5 Aug 2026:

  • Best quality surf: Thursday 6 Aug, 10AM (local time) - 7.5ft (2.3m), 16s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Thursday 13 Aug, 7AM (local time) - 13ft (4.0m), 18s period, S swell with 9,187 kJ wave energy.
  • Next surfable swell (1★+): Thursday 6 Aug, 10AM (local time) - 7.5ft (2.3m), 16s period with SSW swell.

Best Forecast Surf Conditions for Batu Karas this week:

The surf forecast for Batu Karas over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 06) at 10AM. The primary swell is predicted to be 2.3m and 16s period with a secondary swell of 0.8m and 6s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Batu Karas in the next 16 days are 4.0m 18s and forecast to arrive on Thursday (Aug 13) at 7AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Friday (Aug 07) at 1AM.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+)10AM (Thu 6th Aug)7.5ft (2.3m) 16s
Best Surf10AM (Thu 6th Aug)7.5ft (2.3m) 16s
Most Powerful 7AM (Thu 13th Aug)13ft (4.0m) 18s

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


Short Range Forecast

Mostly dry. Warm (max 26°C on Thu morning, min 22°C on Wed night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 7mm), mostly falling on Sat night. Warm (max 25°C on Sun morning, min 22°C on Sun night). Wind will be generally light.

Thursday
6
Friday
7
Saturday
8
Sunday
9
Monday
10
Tuesday
11
Wednesday
12
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
4
3
2
2
3
3
2
4
2
2
3
3
4
3
4
3
4
3
3
3
5
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.3
SSW
16
2.2
SSW
16
2.4
SSW
17
2.5
SSW
17
3
SSW
16
2.5
SSW
16
2.4
SSW
16
2.3
SSW
16
2.3
SSW
16
2.2
SSW
16
2.1
SSW
15
1.9
SSW
14
3
SSW
19
3
SSW
18
3.5
SSW
17
2.5
S
16
3
SSW
16
2.4
SSW
17
2.5
S
15
2.4
S
14
3.5
S
19
Wave Graph
Metric surfscale
Energy kJ
2681
2447
3194
4031
4152
3499
2859
2615
2588
2295
1825
1455
5877
6473
6678
3644
4402
3360
3218
2103
8735
Wind (km/h)
10
SE
15
ESE
10
ENE
20
ESE
15
SE
10
E
10
E
15
SE
15
E
20
ESE
15
ESE
10
ENE
10
ESE
15
ESE
15
ESE
15
E
15
ESE
10
ENE
15
ESE
15
SE
10
NE
Wind State
cross-off
cross-off
cross-on
cross
cross-off
cross
cross-on
cross-off
cross
cross
cross
cross-on
cross
cross
cross
cross
cross-off
cross-on
cross
cross-off
on
High Tide
12:23PM1.10m
00:55AM1.55m
1:12PM0.93m
1:48AM1.51m
2:34PM0.79m
3:05AM1.47m
5:18PM0.76m
4:44AM1.48m
7:00PM0.88m
6:10AM1.56m
7:47PM1.04m
7:15AM1.65m
8:24PM1.21m
Low Tide
6:47AM0.42m
6:05PM0.39m
7:50AM0.47m
6:36PM0.48m
9:22AM0.49m
7:20PM0.58m
11:17AM0.44m
8:55PM0.68m
12:40PM0.33m
11:14PM0.69m
1:33PM0.21m
00:44AM0.59m
2:14PM0.12m
1:48AM0.46m
part cloud
clear
part cloud
part cloud
clear
part cloud
part cloud
clear
rain showers
rain showers
clear
rain showers
part cloud
clear
rain showers
part cloud
clear
part cloud
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:58
5:56
5:56
5:56
5:56
5:56
5:56
<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
3
1
2
1
Temp °C
26
25
23
25
25
24
26
25
24
25
25
24
24
25
23
25
25
23
24
24
23
Feels °C
29
27
25
26
26
26
27
26
26
25
26
26
26
26
25
26
26
25
25
24
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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