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Surf Forecasts:

Batu Karas surf break

Batu Karas surfForecast / Java – Central / Indonesia

information circle12 Day Weather and Surf, issued 12 pm Tuesday 16 Sep 2025 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
27.4° C
 (Which is 1.0°C warmer than 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 Wednesday (Sep 17) at 7PM. The primary swell is predicted to be 2.2m and 14s period with a secondary swell of 0.2m and 18s. Another secondary swell of 1.0m and 6s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Batu Karas in the next 12 days are 2.1m 19s and forecast to arrive on Tuesday (Sep 23) at 10AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Friday (Sep 19) at 4AM.

Wave TypeTime (WIB) & Date Wave Height & Period
Next good surf (1 star+) 7PM (Wed 17th Sep)7ft (2.2m) 14s
Best Surf 7PM (Wed 17th Sep)7ft (2.2m) 14s
Most Powerful10AM (Tue 23rd Sep)7ft (2.1m) 19s

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 Heavy rain (total 104mm), heaviest during Thu night. Warm (max 26°C on Tue morning, min 23°C on Thu night). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 34mm), heaviest during Fri night. Warm (max 27°C on Sat morning, min 24°C on Fri night). Wind will be generally light.

Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
2
3
2
2
3
3
2
3
2
0
1
2
4
2
3
1
2
2
1
1
3
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.7
SSW
2.1
SSW
2.4
SSW
2.2
SSW
2.2
SSW
2.1
SSW
2.1
S
2
S
2
S
1.2
SSW
0.8
SSW
1.3
SSW
1.9
SSW
2.1
SSW
2.2
SSW
2.1
SSW
2
SSW
1.7
SSW
1.7
SSW
1.3
SSW
1.2
SSW
Period(s) (?)171615151414131312141716171615151514141421
Wave
Graph
(?)Metric surfscale
Energy (?)1666242527912183207118361608143418179429721671235523022306197618571461136813712171
Wind
(km/h)
20
SE
20
SE
15
ESE
20
ESE
20
SE
15
SE
10
ESE
5
ESE
10
ESE
15
ESE
15
SE
5
ENE
10
S
15
ESE
10
E
15
ESE
20
SE
15
ESE
15
ESE
15
ESE
15
ESE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
off		crosscrosscross-
off		cross-
off		crossglasscrosscrosscross-
off		cross-
on		cross-
off		crosscrosscrosscross-
off		crosscrosscrosscross
High Tide
/ height (m)
2:31PM
0.77
2:40AM
1.30
6:20PM
0.86
4:56AM
1.27
7:01PM
1.03
6:21AM
1.35
7:29PM
1.19
7:13AM
1.42
7:54PM
1.35
7:52AM
1.48
8:18PM
1.48
8:26AM
1.50
8:42PM
1.58
Low Tide
/ height (m)
6:34PM
0.69
11:14AM
0.51
9:50PM
0.80
12:29PM
0.42
12:04AM
0.70
1:11PM
0.35
1:05AM
0.56
1:42PM
0.29
1:47AM
0.42
2:08PM
0.26
2:22AM
0.30
2:32PM
0.24
2:54AM
0.21
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Sunrise5:39--5:37--5:37--5:37--5:37--5:35--5:35--
Sunset-5:42--5:42--5:42--5:42--5:42--5:42--5:42-
thunderstorm
rain showers
rain showers
thunderstorm
part cloud
rain showers
mod rain
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
Rain (mm)
6352-6912615412256------
Temp. °C262625262625252424262625272625272626262726
Feels °C (?)262726262727282826282828302827292728282929
  • 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

Eyeball surf reportRecent Eyeball Surf Reports for Java - Central

  1. weather stationWind Update Continuing clean conditions at Batu Karas (calm at Genteng wx 193 km from Batu Karas). 1.5m 16s long period groundswell from the SSW with a 1.5m 6s windswell from the SE and a 1.0m 12s groundswell from the SW. 3 swells combining to make bigger set waves.

    1 hour 56 minutes ago Batu Karas
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FREE! Surf-Forecast.com widget for your website

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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