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Batu Karas Surf Forecast
/ Java – Central (5 surf breaks) /
Surf Forecasts:
Batu Karas surfForecast / Java – Central / Indonesia
16 Day Weather and Surf, issued 12 am Wednesday 20 May 2026 WIBForecast 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
28.3° C
(Which is slightly cooler than normal)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 (May 20) at 7AM. The primary swell is predicted to be 1.5m and 12s period with a secondary swell of 1.1m and 16s. 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 1.5m 16s and forecast to arrive on Thursday (May 21) at 10PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 4s period and expected on Friday (May 22) at 4AM.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Wed 20th May) | 5ft (1.5m) 12s |
| Best Surf | 7AM (Wed 20th May) | 5ft (1.5m) 12s |
| Most Powerful | 10PM (Thu 21st May) | 5ft (1.5m) 16s |
Table - best surf conditions forecast for Batu Karas over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 11mm), heaviest on Wed afternoon. Warm (max 28°C on Wed morning, min 25°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 26mm), heaviest during Mon morning. Warm (max 28°C on Sat morning, min 25°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | Monday 25 | Tuesday 26 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SSW 13 | SW 12 | SSW 12 | SE 8 | SW 17 | SE 8 | SW 16 | SW 15 | |
511 | 643 | 565 | 696 | 1006 | 875 | 940 | 940 | 953 | 681 | 621 | 458 | 336 | 299 | 149 | 199 | 383 | 424 | 687 | 739 | 763 | |
Wind (km/h) | |||||||||||||||||||||
cross | cross-off | glassy | cross-off | cross-off | glassy | cross | cross-off | cross-on | cross | cross-off | cross-on | cross-off | cross-off | cross-on | cross | cross | cross | cross-on | cross | cross | |
High Tide | 9:53AM1.87m | 10:54PM1.17m | 10:40AM1.76m | 11:44PM1.15m | 11:29AM1.60m | 00:42AM1.15m | 12:24PM1.42m | 1:49AM1.17m | 1:30PM1.24m | 3:04AM1.22m | 2:57PM1.10m | 4:13AM1.30m | 4:35PM1.03m | ||||||||
Low Tide | 4:50PM0.00m | 4:10AM0.42m | 5:37PM0.11m | 5:03AM0.50m | 6:27PM0.23m | 6:08AM0.61m | 7:21PM0.35m | 7:34AM0.69m | 8:20PM0.46m | 9:20AM0.69m | 9:22PM0.53m | 10:55AM0.61m | 10:22PM0.58m | ||||||||
 |  |  | | | | | | | | | | | | | | | |  | |  | |
 | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — |
 | — | 5:34 | — | — | 5:34 | — | — | 5:34 | — | — | 5:34 | — | — | 5:34 | — | — | 5:34 | — | — | 5:34 | — |
— | 5 | 1 | — | 2 | 2 | — | — | 1 | — | — | 3 | — | 3 | 7 | 9 | 3 | 3 | 1 | — | 2 | |
Temp °C | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 26 | 28 | 27 | 26 | 27 | 27 | 26 | 28 | 28 | 26 |
32 | 33 | 32 | 32 | 31 | 32 | 32 | 32 | 31 | 32 | 31 | 30 | 31 | 30 | 30 | 29 | 28 | 28 | 29 | 29 | 27 | |
Swell 1 Height (m) Direction Period (s) | S 11 | S 11 | S 11 | SW 15 | SW 15 | SW 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SSW 13 | SE 7 | SSE 7 | SSW 12 | SW 17 | SW 16 | SW 16 | SW 15 |
 kJ | 476 | 467 | 332 | 696 | 1006 | 875 | 940 | 940 | 953 | 681 | 621 | 458 | 336 | 299 | 52 | 108 | 196 | 424 | 515 | 739 | 763 |
Swell 2 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 15 | S 12 | SE 8 | SE 8 | SE 7 | ESE 8 | ESE 8 | ESE 8 | SE 8 | ESE 7 | S 6 | S 8 | SW 12 | SSW 12 | SW 16 | SSW 12 | SSW 11 | S 14 | SSW 22 |
| kJ | 511 | 643 | 565 | 330 | 35 | 84 | 41 | 78 | 86 | 56 | 71 | 62 | 38 | 44 | 149 | 199 | 130 | 94 | 50 | 4 | 45 |
Swell 3 Height (m) Direction Period (s) | S 14 | W 8 | S 13 | SE 8 | SE 9 | S 10 | ESE 9 | S 12 | S 8 | S 11 | S 7 | S 6 | ESE 7 | ESE 7 | S 8 | S 8 | SW 20 | W 8 | W 8 | — | S 13 |
| kJ | 15 | 5 | 14 | 32 | 21 | 71 | 46 | 11 | 20 | 9 | 9 | 18 | 30 | 19 | 63 | 50 | 97 | 1 | 1 | — | 3 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | SE 4 | SE 4 | — | — | — | — | SE 6 | — | ESE 7 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 |
| kJ | — | — | — | — | — | — | — | 9 | 9 | — | — | — | — | 39 | — | 62 | 383 | 418 | 687 | 596 | 392 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 6 | 0 | 0 | 0 | 0 | 0 | 25 | 0 | 6 | 230 | 0 | 6 | 0 | 0 | 8 | 18 | 606 | 25 | 230 | 519 | 25 |
Best forecast wave conditions in Central Java | |||||||||||||||||||||
Best forecast wave conditions in Indonesia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.
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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