Batu Karas Surf Break

Lat Long: 7.75° S 108.50° E

Batu Karas Surf Forecast and Surf Report

Issued: 12 pm 19 Oct 2026 (local time)

Forecast update in  hr  min

Today's Batu Karas sea temperature is
24.8°C
2.5° 

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 Oct 2026:

  • Best quality surf: Saturday 24 Oct, 1AM (local time) - 8ft (2.5m), 16s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Friday 23 Oct, 1AM (local time) - 10ft (3.0m), 19s period, SSW swell with 5,931 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 20 Oct, 7AM (local time) - 6ft (1.9m), 14s 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 Tuesday (Oct 20) at 7AM. The primary swell is predicted to be 1.9m and 14s period with a secondary swell of 0.9m and 6s. 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 3.0m 19s and forecast to arrive on Friday (Oct 23) at 1AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 6s period and expected on Sunday (Oct 25) at 1AM.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+) 7AM (Tue 20th Oct)6ft (1.9m) 14s
Best Surf 1AM (Sat 24th Oct)8ft (2.5m) 16s
Most Powerful 1AM (Fri 23rd Oct)10ft (3.0m) 19s

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


Short Range Forecast

Light rain (total 2mm), mostly falling on Tue night. Warm (max 28°C on Tue morning, min 24°C on Mon night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 3mm), mostly falling on Fri night. Warm (max 28°C on Fri morning, min 24°C on Sat night). Wind will be generally light.

Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
Saturday
24
Sunday
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
2
2
2
2
3
2
3
2
3
3
3
3
4
2
3
3
3
4
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
15
2.4
SSW
15
2
SSW
14
1.9
SSW
14
1.7
SSW
14
1.6
SW
13
1.4
SW
13
1.6
SSW
13
1.1
SSW
18
2
SSW
18
2
SSW
16
3
SSW
19
3
SSW
17
3
SSW
17
2.5
SSW
16
2.4
SSW
16
2.3
SSW
16
2.5
SSW
16
2.1
SSW
15
2.2
SSW
14
2
SSW
14
Wave Graph
Metric surfscale
Energy kJ
2887
2361
1582
1388
1143
854
689
778
753
2357
1938
5931
5522
5128
3685
2751
2582
3135
1847
2020
1644
Wind (km/h)
15
SE
20
SE
5
ENE
15
ESE
20
SE
10
E
15
SE
15
SE
5
NE
15
ESE
15
SE
5
NE
15
ESE
15
SE
10
ESE
20
ESE
20
SE
10
ENE
15
SE
15
SSE
5
E
Wind State
cross-off
cross-off
cross-on
cross
cross-off
cross
cross-off
cross-off
glassy
cross
cross-off
on
cross
cross-off
cross-off
cross
cross-off
cross-on
cross-off
cross-off
glassy
High Tide
1:15PM0.85m
00:38AM1.17m
5:47PM0.89m
2:32AM1.08m
5:54PM1.03m
4:51AM1.09m
6:12PM1.17m
6:00AM1.16m
6:33PM1.33m
6:46AM1.24m
6:57PM1.48m
7:25AM1.29m
7:23PM1.63m
Low Tide
5:16PM0.76m
8:58AM0.62m
6:37PM0.89m
10:41AM0.60m
11:10PM0.83m
11:34AM0.56m
00:10AM0.67m
12:08PM0.51m
00:48AM0.49m
12:38PM0.46m
1:22AM0.31m
1:07PM0.41m
1:57AM0.15m
clear
clear
clear
clear
clear
thunderstorm
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clear
part cloud
part cloud
part cloud
part cloud
part cloud
clear
thunderstorm
part cloud
clear
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:22
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5:22
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5:20
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5:20
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5:20
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5:20
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5:20
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<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
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5:38
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5:38
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5:38
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5:39
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5:39
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5:39
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5:39
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 mm
—
—
—
—
—
2
—
—
—
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—
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—
3
—
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Temp °C
27
27
26
28
27
26
27
26
26
27
27
26
28
27
26
27
27
25
27
27
26
Feels °C
29
29
30
30
28
30
29
28
29
29
29
30
29
28
29
28
28
28
28
29
29
  • 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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