Batu Karas Surf Break

Batu Karas Surf Forecast and Surf Report

Lat Long: 7.75° S 108.50° E

Issued: 12 pm 29 Jun 2026 (local time)

Forecast update in  hr  min

Today's Batu Karas sea temperature is
28.1° C

Normal for this time of year

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 29 Jun 2026:

  • Best quality surf: Wednesday 1 Jul, 4AM (local time) - 4.5ft (1.4m), 15s period, SSW swell with glassy winds.
  • Most powerful swell: Sunday 5 Jul, 4AM (local time) - 7.5ft (2.3m), 15s period, S swell with 2,249 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 1 Jul, 4AM (local time) - 4.5ft (1.4m), 15s 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 Wednesday (Jul 01) at 4AM. The primary swell is predicted to be 1.4m and 15s period with a secondary swell of 1.4m and 13s. Another secondary swell of 0.6m and 5s is also forecast. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Batu Karas in the next 16 days are 2.3m 15s and forecast to arrive on Sunday (Jul 05) at 4AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Friday (Jul 03) at 1PM.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Wed 1st Jul)4.5ft (1.4m) 15s
Best Surf 4AM (Wed 1st Jul)4.5ft (1.4m) 15s
Most Powerful 4AM (Sun 5th Jul)7.5ft (2.3m) 15s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 7mm), mostly falling on Wed night. Warm (max 27°C on Mon morning, min 23°C on Mon night). Wind will be generally light.

Days 4-6 Weather Summary

Moderate rain (total 13mm), heaviest on Thu morning. Warm (max 27°C on Sat afternoon, min 24°C on Thu night). Wind will be generally light.

Monday
29
Tuesday
30
Wednesday
1
Thursday
2
Friday
3
Saturday
4
Sunday
5
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
2
2
2
2
2
2
2
2
2
2
1
1
2
2
3
3
2
1
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.5
SSW
16
2.5
SSW
15
2.3
SSW
14
1.7
S
13
2
SSW
15
1.5
SSW
15
1.6
SSW
14
1.5
SSW
14
1.7
S
13
1.9
S
15
1.6
SSW
14
1.6
SSW
13
1.9
SSW
15
1.9
SSW
14
1.8
SSW
14
1.6
S
17
1.9
SSW
16
2
SSW
15
2.1
S
14
2
S
14
1.8
S
13
Wave Graph
Metric surfscale
Energy kJ
3486
2648
2137
1018
1705
1024
1047
892
943
1589
988
958
1505
1484
1241
1543
1916
1680
1830
1549
1155
Wind (km/h)
15
E
20
ESE
10
ENE
10
E
15
ESE
10
NE
5
E
20
SE
10
E
15
ESE
15
SE
15
ESE
15
ESE
15
ESE
10
NE
10
E
20
SE
15
E
10
E
15
ESE
10
ENE
Wind State
cross-on
cross
cross-on
cross-on
cross
cross-on
cross
cross-off
cross
cross
cross-off
cross
cross
cross
cross-on
cross-on
cross-off
cross
cross
cross
cross-on
High Tide
8:42PM1.02m
8:02AM1.55m
9:15PM1.07m
8:40AM1.59m
9:47PM1.13m
9:15AM1.60m
10:18PM1.18m
9:48AM1.59m
10:49PM1.24m
10:21AM1.55m
11:20PM1.29m
10:53AM1.48m
11:50PM1.33m
Low Tide
2:31PM0.22m
1:35AM0.60m
3:05PM0.17m
2:17AM0.57m
3:36PM0.15m
2:56AM0.55m
4:07PM0.14m
3:34AM0.54m
4:35PM0.16m
4:12AM0.55m
5:02PM0.19m
4:51AM0.56m
5:28PM0.23m
clear
clear
part cloud
part cloud
clear
part cloud
part cloud
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
rain showers
part cloud
part cloud
part cloud
part cloud
part cloud
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:58
5:58
5:58
5:58
5:58
5:58
5:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:38
5:38
5:39
5:39
5:39
5:39
5:40
 mm
1
6
4
1
3
2
1
2
2
Temp °C
27
26
24
27
26
25
25
26
25
26
26
25
26
26
25
26
27
26
27
27
26
Feels °C
27
26
26
28
27
27
26
27
26
27
27
26
27
28
27
28
28
28
29
29
29
Swell 1
Height (m)
Direction
Period (s)
2.5
SSW
16
2.5
SSW
15
2.3
SSW
14
1.7
S
13
2
SSW
15
1.5
SSW
15
1.6
SSW
14
1.5
SSW
14
1.7
S
13
1.9
S
15
1.6
SSW
14
1.6
SSW
13
1.9
SSW
15
1.9
SSW
14
1.8
SSW
14
1.6
S
17
1.9
SSW
16
2
SSW
15
2.1
S
14
2
S
14
1.8
S
13
Energy kJ
3486
2648
2137
1018
1705
1024
1047
892
943
1589
988
958
1505
1484
1241
1543
1916
1680
1830
1549
1155
Swell 2
Height (m)
Direction
Period (s)
0.1
SW
24
0.1
SW
24
0.7
SSW
15
1.3
SSW
15
0.6
S
13
1.3
S
13
0.4
SW
19
0.6
SW
18
1
SSW
16
0.5
SW
19
1
SW
16
1
SW
16
0.1
W
11
0.1
W
13
0.9
S
19
1.6
SSW
11
1.6
S
10
1.3
SSE
10
0.4
SSW
20
0.7
SSW
18
1.2
SSW
18
Energy kJ
22
22
191
665
128
563
131
255
539
181
521
515
2
3
568
622
551
322
128
344
861
Swell 3
Height (m)
Direction
Period (s)
0.1
SW
21
0.5
SSW
18
0.2
WSW
21
0.5
SW
20
0.1
W
12
0.1
W
11
0.3
SW
18
0.1
W
11
0.1
W
11
0.1
W
12
0.1
W
11
0.5
SW
15
0.1
SW
21
0.4
SSW
20
0.1
W
10
0.1
W
10
0.2
WNW
9
Energy kJ
18
182
44
186
3
3
49
3
2
3
3
104
18
149
2
2
8
Wind waves
Height (m)
Direction
Period (s)
1.1
ESE
6
1
ESE
6
0.9
ESE
6
0.9
ESE
6
0.8
ESE
6
0.6
ESE
6
1.5
SSE
7
1.6
SSE
7
0.9
SE
6
0.9
SE
5
0.9
SE
5
0.9
SE
5
1.1
SE
5
1
ESE
5
1
ESE
5
0.9
ESE
5
0.8
ESE
5
Energy kJ
88
72
53
51
36
24
237
216
54
42
45
33
57
54
49
48
35
Nearest Offshore or Glassy
Rating
(10 max)
4
4
4
4
4
4
3
4
4
4
4
3
4
4
4
4
4
4
4
4
4
Distance (km)
18
519
6
18
519
6
265
519
18
265
519
230
519
519
6
18
230
18
230
233
6
Best forecast wave conditions in Central Java
Rating
(10 max)
4
4
4
4
4
4
4
4
4
Best forecast wave conditions in Indonesia
Rating
(10 max)
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
Header Global
Rating
(10 max)
7
5
5
5
5
5
5
4
9
5
5
5
6
6
6
6
6
6
8
9
9
  • 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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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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