Batu Karas surf break

Batu Karas surfForecast / Java – Central / Indonesia

information circle16 Day Weather and Surf, issued 12 am Tuesday 05 May 2026 WIB
Forecast update in hr  min  s Forecast update imminent
Batu Karas surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Batu Karas sea temperature is
29.4° C
(Which is slightly warmer than usual)

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 (May 06) at 1AM. The primary swell is predicted to be 0.8m and 16s period with a secondary swell of 1.0m and 11s. Another secondary swell of 1.7m and 7s 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 1.2m 18s and forecast to arrive on Thursday (May 07) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Tuesday (May 05) at 7AM.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+) 1AM (Wed 6th May)2.5ft (0.8m) 16s
Best Surf 1AM (Wed 6th May)2.5ft (0.8m) 16s
Most Powerful 4PM (Thu 7th May)4ft (1.2m) 18s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 184mm), heaviest during Tue night. Warm (max 28°C on Tue morning, min 23°C on Tue night). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 48mm), heaviest during Sat night. Warm (max 29°C on Fri afternoon, min 26°C on Thu night). Wind will be generally light.

Tuesday
5
Wednesday
6
Thursday
7
Friday
8
Saturday
9
Sunday
10
Monday
11
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
0
2
0
0
1
1
1
2
1
0
0
0
0
0
0
0
1
2
1
1
Swell
Height Map
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<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
Wave
Height (m)
Direction
Period (s)
1.3
S
12
0.7
SW
18
0.8
SW
16
0.9
SW
16
0.9
SW
15
0.9
SW
15
1.1
SW
18
1.2
SW
18
1.1
SW
16
1.2
SW
16
1.2
SW
15
1
SW
14
0.9
SW
14
1.9
SE
8
2
ESE
8
2.2
SE
8
1.9
SE
9
1.7
SE
8
1.6
SE
8
1.4
SE
8
0.8
SW
15
Wave Graph
Metric surfscale
Energy kJ
464
307
318
427
322
384
719
905
602
729
693
407
341
382
515
647
535
382
329
229
266
Wind (km/h)
10
E
20
ESE
0
NNW
10
ENE
20
ESE
10
E
20
E
15
ESE
10
E
15
E
15
ESE
10
E
15
E
15
ESE
15
ENE
15
E
20
ESE
10
ENE
10
SE
15
ESE
10
ENE
cross
cross
glassy
cross-on
cross
cross-on
cross
cross
cross
cross-on
cross
cross-on
cross-on
cross
cross-on
cross-on
cross
cross-on
cross-off
cross
cross-on
High Tide
9:39AM1.65m
10:29PM1.13m
10:09AM1.59m
11:01PM1.07m
10:39AM1.51m
11:38PM1.02m
11:11AM1.43m
00:25AM0.98m
11:47AM1.33m
1:29AM0.97m
12:36PM1.23m
2:58AM1.01m
1:55PM1.12m
Low Tide
4:26PM0.14m
3:44AM0.47m
4:59PM0.21m
4:11AM0.53m
5:34PM0.29m
4:39AM0.61m
6:14PM0.38m
5:12AM0.70m
7:03PM0.46m
6:05AM0.79m
8:04PM0.53m
7:59AM0.85m
9:14PM0.56m
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:48
5:48
5:48
5:48
5:48
5:48
5:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:37
5:36
5:36
5:36
5:36
5:36
5:35
6
8
123
2
2
8
6
6
9
2
1
9
5
4
14
3
1
3
4
1
4
Temp °C
28
28
25
28
28
27
28
28
27
28
29
27
28
28
27
28
29
26
28
28
26
30
30
27
30
30
29
30
30
30
31
31
30
30
30
29
30
30
28
30
30
29
Swell 1
Height (m)
Direction
Period (s)
1.3
S
12
0.8
SSW
12
1
S
11
1.4
SE
7
0.9
SW
15
0.9
SW
15
1.1
SW
18
1.2
SW
18
1.1
SW
16
1.2
SW
16
1.2
SW
15
1
SW
14
0.9
SW
14
0.8
SW
13
0.7
SW
13
0.6
SW
14
0.6
SW
13
0.4
SW
12
0.7
SW
13
0.7
SW
13
0.8
SW
15
Energy kJ
464
186
247
168
322
355
719
905
602
729
693
407
341
215
183
151
144
55
175
175
266
Swell 2
Height (m)
Direction
Period (s)
0.4
SW
19
0.8
S
11
0.8
SW
16
0.9
SW
16
0.8
S
10
0.7
S
10
0.8
SW
14
0.6
SW
13
0.6
SW
13
0.3
S
9
0.3
S
9
0.5
S
18
0.5
S
16
0.5
S
15
0.4
SSW
15
0.3
SSW
13
0.3
SSW
13
0.4
SW
15
0.4
SW
16
0.5
SW
16
0.6
SW
12
Energy kJ
127
146
318
427
138
96
231
140
138
14
13
156
132
118
71
34
34
54
67
127
120
Swell 3
Height (m)
Direction
Period (s)
0.7
SW
18
0.2
SSW
22
0.9
S
11
0.6
SSW
20
0.7
SW
19
0.5
S
10
0.1
W
16
0.4
SSW
14
0.3
SW
12
0.1
W
14
0.3
S
8
0.2
S
8
0.2
S
8
0.3
S
8
0.2
SSW
18
0.1
W
9
0.3
SSW
12
0.1
W
8
0.2
SSW
20
0.2
SSW
20
Energy kJ
307
47
184
256
384
47
5
74
22
4
12
6
5
12
30
1
30
1
37
37
Wind waves
Height (m)
Direction
Period (s)
1.4
ESE
6
1.6
SE
6
1.7
ESE
7
1.6
SE
7
1.4
SE
7
1.4
SE
7
1.6
SE
7
1.8
SE
8
1.6
SE
8
1.6
SE
7
1.3
SE
7
1.3
SE
7
1.7
ESE
7
1.9
SE
8
2
ESE
8
2.2
SE
8
1.9
SE
9
1.7
SE
8
1.6
SE
8
1.4
SE
8
1.4
SE
8
Energy kJ
141
207
244
214
183
178
251
354
267
248
174
164
286
382
515
647
535
382
329
229
229
Nearest Offshore or Glassy
Rating
(10 max)
3
3
2
3
3
2
3
4
3
3
3
2
2
2
2
2
2
3
2
3
3
Distance (km)
18
236
0
8
230
18
230
230
18
18
230
18
25
230
25
230
230
8
0
235
6
Best forecast wave conditions in Central Java
Rating
(10 max)
3
3
3
2
3
3
2
2
2
3
3
3
Best forecast wave conditions in Indonesia
Rating
(10 max)
3
3
3
4
4
4
4
4
4
4
3
3
3
2
2
3
2
3
3
3
3
Header Global
Rating
(10 max)
5
5
4
5
5
5
6
6
5
5
6
5
7
9
4
4
4
9
9
8
5
  • Map Icons:
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  • 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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