4 Bobs Surf Break

Lat Long: 1.91° S 99.31° E

4 Bobs 48 hour detailed Surf Forecast

Issued: 12 am 20 Sep 2026 (local time)

Forecast update in  hr  min

Today's 4 Bobs sea temperature is
29.1°C
0.4° 

4 Bobs surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at 4 Bobs today (20 Sep):

  • Morning surf: Morning surf (20 Sep, local time) - 7ft (2.2m), 16s period with SW swell.
  • Afternoon surf: Afternoon surf (20 Sep, local time) - 6.5ft (2.0m), 15s period with SSW swell.
  • Evening surf: Evening surf (20 Sep, local time) - 6.5ft (2.0m), 15s period with SSW swell.

The current surf forecast for 4 Bobs at 5AM is: 2.2m 16s primary swell from a Southwest direction and 0.2m 8s secondary swell from a West-northwest direction, 1.2m 5s secondary swell from a South-southeast direction (forecast issued at 12:00am September 20). The wind direction is predicted to be cross-onshore.

Time (WIB) & DateWave HeightWave Period
Morning (20 Sep)7ft (2.2m)16s
Afternoon (20 Sep)6.5ft (2.0m)15s
Evening (20 Sep)6.5ft (2.0m)15s

Table - waves today at 4 Bobs. (Swell directed towards the surf break)


Short Range Forecast

Heavy rain (total 26mm), heaviest during Sat night. Warm (max 28°C on Mon afternoon, min 26°C on Sat night). Wind will be generally light.

Sunday
20
Monday
21
Tuesday
22
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
Rating
(10 max)
0
0
0
0
1
1
2
2
2
2
2
2
2
2
2
1
2
2
1
2
2
2
2
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.2
SW
16
2.2
SW
16
2.2
SW
16
2.1
SSW
16
2.1
SSW
16
1.9
SW
15
2
SSW
15
2
SSW
15
2
SSW
15
2.1
SSW
14
2
SSW
14
1.9
SSW
14
1.9
SSW
14
1.9
SSW
14
2
SSW
13
1.8
SSW
13
1.8
S
13
1.7
S
13
1.2
SSW
13
1.6
S
13
1
SSW
18
1.1
SSW
18
2
SSW
18
1.6
SSW
18
Wave Graph
Metric surfscale
Energy kJ
2320
2291
2291
2151
2151
1730
1809
1671
1626
1752
1667
1475
1403
1284
1359
1179
1138
1003
451
835
616
759
2411
1471
Wind (km/h)
25
SE
20
ESE
20
SE
25
SSE
20
SSE
15
SSE
15
SSE
15
SSE
15
SE
15
ESE
15
SE
15
SE
10
SE
10
SSE
15
SSE
15
SSE
15
SE
15
SE
10
SE
15
SE
10
SE
10
SSE
15
SSE
15
SSE
Wind State
cross-on
cross-on
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
00:08AM0.82m
9:40AM0.47m
1:26PM0.48m
2:00AM0.81m
3:21PM0.54m
3:18AM0.86m
4:17PM0.64m
Low Tide
6:32AM0.43m
11:05AM0.47m
5:25PM0.38m
10:30AM0.40m
7:07PM0.43m
10:29AM0.34m
8:55PM0.40m
thunderstorm
thunderstorm
thunderstorm
part cloud
thunderstorm
part cloud
cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:13
6:11
6:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:19
6:19
6:17
 mm
1
5
2
1
1
3
2
1
1
2
1
1
1
1
1
1
1
Temp °C
27
26
26
27
27
27
27
27
27
27
27
27
27
28
27
27
27
26
26
27
27
28
28
27
Feels °C
28
27
27
28
29
29
30
30
30
30
30
30
30
31
30
30
31
29
29
30
31
31
31
30
  • 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
How to use the Wavefinder 

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