Batu Karas Surf Break

Lat Long: 7.75° S 108.50° E

Batu Karas Surf Forecast and Surf Report

Issued: 6 am 20 Jul 2026 (local time)

Forecast update in  hr  min

Today's Batu Karas sea temperature is
27.0° 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 20 Jul 2026:

  • Most powerful swell: Monday 20 Jul, 4PM (local time) - 7ft (2.1m), 16s period, SSW swell with 2,228 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 2.1m 16s and forecast to arrive on Monday (Jul 20) at 4PM. Winds are predicted to be cross-offshore at the time the swell arrives.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 4PM (Mon 20th Jul)7ft (2.1m) 16s

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


Short Range Forecast

Heavy rain (total 22mm), heaviest during Mon night. Warm (max 26°C on Mon morning, min 24°C on Mon night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 4mm), mostly falling on Thu morning. Warm (max 26°C on Thu afternoon, min 23°C on Thu night). Wind will be generally light.

Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
Sunday
26
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
3
1
1
1
0
0
1
0
0
0
0
1
1
1
2
0
0
1
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.1
SSW
16
2.1
SSW
16
1.9
SSW
15
1.7
SSW
14
1.6
SSW
14
1.3
SSW
13
1.1
SSW
13
2.1
SE
8
2
SE
8
2.1
SE
7
2.1
SE
8
1.9
SE
8
2.2
SE
8
2.1
SE
8
2.1
SE
8
2.1
SE
8
1.9
SE
8
2.1
SE
9
2.4
SE
9
2.4
SE
9
2.3
SE
9
Wave Graph
Metric surfscale
Energy kJ
2285
2228
1568
1099
955
615
408
539
432
452
494
424
634
611
574
581
505
639
1001
1001
872
Wind (km/h)
20
E
20
ESE
15
E
20
ESE
20
ESE
15
ESE
20
ESE
25
SE
20
ESE
25
ESE
25
ESE
20
ESE
20
E
25
ESE
20
E
15
E
20
ESE
20
ESE
20
E
20
ESE
20
ESE
Wind State
cross
cross-off
cross-on
cross
cross
cross
cross
cross-off
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
High Tide
11:48AM1.36m
00:27AM1.53m
12:27PM1.19m
1:06AM1.48m
1:09PM1.02m
1:48AM1.42m
2:02PM0.87m
2:40AM1.34m
3:41PM0.77m
3:50AM1.30m
6:34PM0.78m
5:13AM1.30m
7:41PM0.85m
Low Tide
5:58PM0.28m
6:49AM0.47m
6:25PM0.38m
7:45AM0.53m
6:52PM0.49m
8:55AM0.58m
7:19PM0.59m
10:29AM0.58m
7:55PM0.68m
12:08PM0.52m
9:23PM0.75m
1:11PM0.43m
11:25PM0.76m
rain showers
clear
rain showers
rain showers
clear
rain showers
rain showers
rain showers
rain showers
rain showers
clear
rain showers
rain showers
clear
part cloud
clear
clear
clear
clear
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:00
6:00
6:00
6:00
6:00
6:00
6:00
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:44
5:44
5:44
5:44
5:44
5:44
5:45
 mm
1
7
3
1
4
2
4
2
1
1
6
Temp °C
26
26
24
26
26
25
25
25
24
25
26
24
26
26
25
25
26
24
26
26
24
Feels °C
27
27
25
25
25
26
25
24
23
24
25
23
24
24
24
25
26
24
26
26
24
  • 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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