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Surf Forecasts:

Batu Karas surf break

Batu Karas surfForecast / Java – Central / Indonesia

information circle12 Day Weather and Surf, issued 6 pm Thursday 15 Jan 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
29.1° C
 (Which is normal for this time of year)

Best Forecast Surf Conditions for Batu Karas this week:

The surf forecast for Batu Karas over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Jan 17) at 4AM. The primary swell is predicted to be 1.1m and 14s period with a secondary swell of 0.9m and 8s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Batu Karas in the next 12 days are 2.2m 18s and forecast to arrive on Wednesday (Jan 21) at 7PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Friday (Jan 16) at 4PM.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+) 4AM (Sat 17th Jan)3.5ft (1.1m) 14s
Best Surf 1PM (Thu 22nd Jan)6ft (1.9m) 15s
Most Powerful 7PM (Wed 21st Jan)7ft (2.2m) 18s

Table - best surf conditions forecast for Batu Karas over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Moderate rain (total 19mm), heaviest on Sat morning. Warm (max 30°C on Fri morning, min 25°C on Thu night). Winds decreasing (fresh winds from the WSW on Fri morning, calm by Sat morning).

Days 3-6 Weather Summary Heavy rain (total 42mm), heaviest during Tue morning. Warm (max 29°C on Mon morning, min 23°C on Tue night). Wind will be generally light.

Thu
15
Friday
16
Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
1
0
1
0
1
2
2
2
3
2
1
3
2
2
2
3
2
3
3
3
3
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.1
SW
1
SW
1
SW
0.9
SW
1.1
SW
1.1
SW
1.1
SW
1.2
SW
1.4
SW
1.4
SW
1.3
SSW
1.5
SSW
1.5
SSW
1.5
SSW
1.4
SSW
1.4
SSW
0.9
SSW
1.6
SSW
1.8
SSW
2.2
SSW
2.1
SSW
Period(s) (?)141414141413161515141415151414142219181616
Wave
Graph
(?)Metric surfscale
Energy kJ (?)410398393341453398636693773763691101410838457427218161845199623882028
Wind
(km/h)
20
W
15
WNW
20
WSW
30
WSW
10
NW
0
E
5
W
10
NW
5
W
10
WSW
15
WNW
15
W
20
WSW
5
WNW
10
WNW
15
W
10
WNW
10
WNW
20
W
15
W
10
NW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		crosscross-
off		cross-
off		crossglassglasscrosscross-
off		cross-
off		crosscross-
off		cross-
off		crosscrosscross-
off		crosscrosscross-
off		cross-
off		cross
High Tide
/ height (m)
5:40PM
1.33
7:54AM
0.87
6:40PM
1.40
8:25AM
0.95
7:27PM
1.49
8:52AM
1.04
8:06PM
1.57
9:18AM
1.13
8:42PM
1.63
9:44AM
1.22
9:15PM
1.66
10:10AM
1.31
9:47PM
1.66
10:36AM
1.40
Low Tide
/ height (m)
1:30AM
0.39
11:50AM
0.74
2:07AM
0.29
12:55PM
0.69
2:38AM
0.21
1:43PM
0.62
3:06AM
0.15
2:24PM
0.56
3:33AM
0.11
3:02PM
0.50
3:58AM
0.09
3:38PM
0.46
4:22AM
0.10
Thu
15
Friday
16
Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Sunrise--5:39--5:39--5:39--5:41--5:41--5:41--5:41
Sunset6:09--6:10--6:10--6:10--6:10--6:10--6:12--
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
thunderstorm
cloud
thunderstorm
mod rain
mod rain
light rain
heavy rain
light rain
light rain
heavy rain
rain showers
Rain (mm)
2-112433313-310821145232
Temp. °C282630292628272527282629292627252526242428
Feels °C (?)292729292833322831312730302830272827252631
  • 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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Latest Updates

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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Batu Karas surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

View detailed surf forecast for Batu Karas at:
surf-forecast.com

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 12 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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