Batu Karas Surf Break

Lat Long: 7.75° S 108.50° E

Batu Karas Surf Forecast and Surf Report

Issued: 6 am 19 Aug 2026 (local time)

Forecast update in  hr  min

Today's Batu Karas sea temperature is
26.6° C
0.2° 

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 19 Aug 2026:

  • Best quality surf: Wednesday 19 Aug, 10PM (local time) - 10ft (3.0m), 17s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Wednesday 19 Aug, 1PM (local time) - 10ft (3.0m), 17s period, SSW swell with 5,287 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 19 Aug, 10PM (local time) - 10ft (3.0m), 17s 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 (Aug 19) at 10PM. The primary swell is predicted to be 3.0m and 17s period with a secondary swell of 0.9m 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 3.0m 17s and forecast to arrive on Wednesday (Aug 19) at 1PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 6s period and expected on Wednesday (Aug 19) at 1PM.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+)10PM (Wed 19th Aug)10ft (3.0m) 17s
Best Surf10PM (Wed 19th Aug)10ft (3.0m) 17s
Most Powerful 1PM (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 Wed night. Warm (max 26°C on Wed morning, min 24°C on Wed 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 Sat morning, min 24°C on Sun night). Wind will be generally light.

Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
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
3
2
3
3
3
3
2
3
3
2
2
2
3
1
2
1
1
1
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3
SSW
17
3
SSW
17
3
SSW
16
2.5
SSW
16
2.5
SSW
16
2.2
SSW
16
2.5
SSW
17
2.5
SSW
16
2.5
SSW
16
2.2
SSW
15
2.1
SSW
15
1.9
SSW
15
1.8
SSW
14
1.7
SSW
14
2
SSW
17
1.8
SSW
16
1.9
SSW
17
1.7
SSW
16
1.6
SSW
15
1.6
SSW
14
1.5
SSW
14
Wave Graph
Metric surfscale
Energy kJ
5349
5226
4703
3685
3024
2379
3728
3506
3113
2241
1953
1568
1319
1159
2322
1566
2146
1479
1087
1072
791
Wind (km/h)
10
SE
15
SE
10
ESE
20
E
20
ESE
10
E
15
ESE
20
SE
15
E
15
ESE
20
ESE
15
ESE
15
ESE
20
ESE
15
ESE
20
ESE
20
ESE
15
ESE
20
ESE
20
ESE
15
ESE
Wind State
cross-off
cross-off
cross
cross
cross-off
cross-on
cross-off
cross-off
cross-on
cross
cross-off
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
High Tide
11:49AM1.16m
00:09AM1.53m
12:20PM1.01m
00:43AM1.42m
12:53PM0.86m
1:25AM1.31m
1:53PM0.73m
2:36AM1.21m
4:43AM1.20m
7:59PM0.88m
6:11AM1.28m
8:01PM1.00m
Low Tide
5:32PM0.38m
6:49AM0.45m
5:51PM0.47m
7:43AM0.55m
6:05PM0.57m
9:18AM0.63m
6:01PM0.66m
12:05PM0.58m
1:06PM0.48m
11:26PM0.82m
1:36PM0.38m
00:45AM0.73m
part cloud
part cloud
rain showers
clear
clear
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
rain showers
part cloud
clear
part cloud
rain showers
clear
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:52
5:52
5:52
5:52
5:50
5:50
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
2
1
1
Temp °C
26
26
25
26
26
24
26
26
25
26
25
25
26
26
25
26
26
25
26
26
25
Feels °C
28
28
28
26
26
26
28
27
25
27
25
27
25
25
26
25
25
25
25
25
25
  • 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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