Boat Basin Lefts Surf Break
GUAM

Boat Basin Lefts 48 hour detailed Surf Forecast

Lat Long: 13.48° N 144.75° E

Issued: 9 am 20 Jun 2026 (local time)

Forecast update in  hr  min

Today's Boat Basin Lefts sea temperature is
29.4° C

Normal for this time of year

Boat Basin Lefts surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Boat Basin Lefts today (20 Jun):

  • Morning surf: Morning surf (20 Jun, local time) - 2.5ft (0.8m), 8s period with E swell.
  • Afternoon surf: Afternoon surf (20 Jun, local time) - 2.5ft (0.7m), 8s period with E swell.
  • Evening surf: Evening surf (20 Jun, local time) - 2ft (0.6m), 8s period with E swell.

The current surf forecast for Boat Basin Lefts at 6PM is: 0.6m 8s primary swell from a East direction (forecast issued at 09:00am June 20). An open ocean swell of 0.6m 10s is not directed at the surf break, a second open ocean swell of 0.4m 4s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (ChST) & DateWave HeightWave Period
Morning (20 Jun)2.5ft (0.8m)8s
Afternoon (20 Jun)2.5ft (0.7m)8s
Evening (20 Jun)2ft (0.6m)8s

Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 7mm), mostly falling on Mon night. Warm (max 29°C on Sat morning, min 27°C on Sat night). Wind will be generally light.

Saturday
20
Sunday
21
Monday
22
Tue
23
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
1 AM
4 AM
Rating
(10 max)
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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)
0.8
E
8
0.8
E
8
0.8
E
8
0.6
E
8
0.6
E
8
0.5
E
8
0.5
E
8
0.5
E
8
0.6
E
8
0.6
E
8
0.6
ENE
8
0.6
ENE
8
0.6
ENE
8
0.6
ENE
8
0.6
E
8
0.6
E
8
0.6
E
8
0.6
E
8
0.6
E
8
0.6
E
8
0.6
E
8
0.5
E
8
0.5
E
8
0.5
E
8
Wave Graph
Metric surfscale
Energy kJ
82
82
80
41
44
31
31
30
42
43
45
45
45
47
43
43
43
43
44
44
44
32
32
33
Wind (km/h)
15
ESE
20
SE
20
SE
20
SE
10
SE
15
SE
15
SSE
10
SSE
10
SSE
10
SSE
10
SSE
10
SSE
10
SSE
10
SE
10
SE
5
ESE
10
SE
15
SE
15
SSE
15
SSE
10
S
5
SSW
5
WSW
5
W
Wind State
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
cross-off
cross-off
cross-off
glassy
cross-on
High Tide
10:47AM0.79m
1:01AM0.92m
12:04PM0.72m
1:34AM0.91m
1:36PM0.67m
2:05AM0.89m
Low Tide
6:10AM0.61m
5:48PM0.21m
7:16AM0.54m
6:32PM0.33m
8:19AM0.46m
7:16PM0.44m
clear
thunderstorm
clear
part cloud
thunderstorm
thunderstorm
part cloud
clear
clear
clear
thunderstorm
part cloud
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
thunderstorm
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:54
5:54
5:54
5:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:50
6:50
6:50
6:50
 mm
1
1
1
1
2
Temp °C
28
29
29
29
28
28
28
27
27
29
29
29
28
28
27
27
27
29
29
29
28
27
27
27
Feels °C
31
31
31
31
31
32
32
30
30
32
31
31
31
32
30
31
30
32
31
31
32
31
32
31
Swell 1
Height (m)
Direction
Period (s)
0.8
E
8
0.8
E
8
0.8
E
8
0.6
E
8
0.6
E
8
0.5
E
8
0.5
E
8
0.5
E
8
0.6
E
8
0.6
E
8
0.6
ENE
8
0.6
ENE
8
0.6
ENE
8
0.6
ENE
8
0.6
E
8
0.6
S
6
0.7
S
7
0.8
SSW
7
0.9
SSW
7
1
SSW
7
1
SSW
7
0.9
SSW
7
0.9
SW
7
0.7
SW
7
Energy kJ
82
82
80
41
44
31
31
30
42
43
45
45
45
47
43
29
42
62
79
91
102
83
67
47
Swell 2
Height (m)
Direction
Period (s)
0.5
SE
9
0.5
SE
9
0.5
SE
10
0.5
SE
10
0.6
SSE
10
0.5
SSE
7
0.5
SSE
6
0.4
SE
11
0.5
S
7
0.5
S
6
0.5
S
6
0.5
S
6
0.5
S
6
0.5
S
6
0.5
S
6
0.6
E
8
0.6
E
8
0.6
E
8
0.6
E
8
0.6
E
8
0.6
E
8
0.5
E
8
0.5
E
8
0.5
E
8
Energy kJ
43
42
44
50
63
26
21
40
22
21
20
20
19
19
19
43
43
43
44
44
44
32
32
33
Swell 3
Height (m)
Direction
Period (s)
0.4
SW
5
0.3
NNE
6
0.3
N
10
0.4
NE
8
0.4
NE
8
0.4
SE
11
0.4
SE
11
0.4
NE
7
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.4
SE
11
0.4
SE
11
0.4
SE
11
0.4
SE
11
0.4
SE
11
0.4
SE
11
0.4
SE
11
0.4
SE
11
0.4
SE
10
0.4
SE
10
0.4
SSE
6
Energy kJ
7
7
18
16
14
41
40
14
37
37
36
36
37
40
41
41
41
41
40
29
29
27
27
12
Wind waves
Height (m)
Direction
Period (s)
0.5
SSE
5
0.5
SSE
5
0.4
SSE
5
0.4
SE
4
0.4
SSE
7
0.2
ESE
2
Energy kJ
14
13
7
4
18
1
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
Distance (km)
0
0
0
0
0
2069
1836
0
0
0
0
0
0
0
0
0
0
0
0
0
0
11
11
11
Best forecast wave conditions in Guam
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
Best forecast wave conditions in Guam
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
Header Global
Rating
(10 max)
4
6
5
5
5
5
5
5
8
9
9
9
8
8
6
8
8
7
6
8
6
6
5
5
  • 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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