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 30 Jun 2026 (local time)

Forecast update in  hr  min

Today's Boat Basin Lefts sea temperature is
29.3° 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 (30 Jun):

  • Morning surf: Morning surf (30 Jun, local time) - 3.5ft (1.0m), 8s period with ENE swell.
  • Afternoon surf: Afternoon surf (30 Jun, local time) - 3ft (0.9m), 8s period with ENE swell.
  • Evening surf: Evening surf (30 Jun, local time) - 3ft (0.9m), 8s period with ENE swell.

The current surf forecast for Boat Basin Lefts at 12PM is: 0.9m 8s primary swell from a East-northeast direction and 0.3m 7s secondary swell from a North-northeast direction (forecast issued at 09:00am June 30). The wind direction is predicted to be cross-offshore.

Time (ChST) & DateWave HeightWave Period
Morning (30 Jun)3.5ft (1.0m)8s
Afternoon (30 Jun)3ft (0.9m)8s
Evening (30 Jun)3ft (0.9m)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

Moderate rain (total 13mm), heaviest on Wed night. Warm (max 30°C on Tue afternoon, min 27°C on Wed night). Wind will be generally light.

Tuesday
30
Wednesday
1
Thursday
2
Fri
3
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
1
0
0
1
0
0
0
0
1
1
0
1
1
1
1
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)
1
ENE
8
1
E
8
0.9
ENE
8
0.9
ENE
8
0.9
ENE
8
0.9
ENE
8
0.8
ENE
8
0.9
ENE
8
0.9
ENE
8
0.9
ENE
8
1
ENE
8
1
ENE
8
0.9
ENE
9
0.9
ENE
9
0.9
ENE
8
0.9
ENE
8
0.9
ENE
8
0.9
ENE
8
0.8
ENE
8
0.8
ENE
8
0.8
ENE
9
0.8
ENE
9
0.8
ENE
9
0.8
ENE
9
Wave Graph
Metric surfscale
Energy kJ
140
137
112
112
112
119
64
81
81
99
151
154
131
123
120
125
125
125
94
94
99
101
101
101
Wind (km/h)
10
E
15
E
15
ENE
15
ENE
15
ENE
15
ENE
15
E
15
E
15
E
20
E
20
E
20
E
15
E
15
ENE
15
ENE
15
ENE
10
ENE
15
ENE
15
ENE
15
NE
10
NE
15
NE
10
NE
10
NE
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross
cross
High Tide
6:18AM0.84m
9:47PM0.85m
7:00AM0.84m
10:21PM0.86m
7:41AM0.84m
10:52PM0.86m
Low Tide
2:04PM0.07m
2:28AM0.69m
2:41PM0.08m
3:09AM0.68m
3:17PM0.10m
3:52AM0.67m
thunderstorm
thunderstorm
thunderstorm
clear
clear
clear
clear
thunderstorm
thunderstorm
thunderstorm
clear
clear
clear
thunderstorm
thunderstorm
thunderstorm
clear
clear
thunderstorm
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:56
5:56
5:56
5:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:51
6:52
6:52
6:52
 mm
1
1
1
1
2
1
1
2
3
1
Temp °C
28
29
29
30
28
28
28
28
28
29
30
30
29
28
27
28
27
29
29
29
29
28
28
28
Feels °C
31
32
31
32
30
30
31
31
30
31
32
32
32
31
29
30
30
32
32
31
33
31
32
32
Swell 1
Height (m)
Direction
Period (s)
1
ENE
8
1
E
8
0.9
ENE
8
0.9
ENE
8
0.9
ENE
8
0.9
ENE
8
0.8
ENE
8
0.4
E
9
0.4
E
10
0.4
E
10
0.3
SE
8
0.3
SE
8
0.3
SE
8
0.9
ENE
9
0.3
SE
8
0.3
SE
8
0.9
ENE
8
0.9
ENE
8
0.8
ENE
8
0.8
ENE
8
0.8
ENE
9
0.8
ENE
9
0.8
ENE
9
0.8
ENE
9
Energy kJ
140
137
112
112
112
119
64
24
29
30
11
11
11
123
11
10
125
125
94
94
99
101
101
101
Swell 2
Height (m)
Direction
Period (s)
0.3
WNW
8
0.3
SE
8
0.3
NNE
7
0.3
NNE
7
0.3
NNE
6
0.3
SE
8
0.4
E
9
0.3
SE
8
0.3
SE
8
0.3
SE
8
0.1
SW
6
0.1
SW
6
0.1
SW
6
0.3
SE
8
0.1
SW
6
0.1
SE
9
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.3
SE
8
0.3
SE
8
Energy kJ
14
11
9
9
7
11
24
11
11
11
2
2
2
11
2
3
12
12
12
12
12
12
11
11
Swell 3
Height (m)
Direction
Period (s)
0.3
SE
8
0.3
WNW
8
0.2
WNW
8
0.2
WNW
9
0.3
SE
8
0.2
WNW
8
0.3
SE
8
0.2
WNW
8
0.2
WNW
8
0.1
NW
8
0.1
SE
12
0.1
NW
7
0.1
NW
7
0.1
SW
6
0.1
SE
10
0.2
S
7
0.2
SSE
6
0.2
SSE
6
0.2
WSW
6
0.2
WSW
6
0.1
SW
6
0.2
WSW
7
0.2
WSW
7
0.2
WSW
7
Energy kJ
11
14
7
7
11
6
11
6
6
2
6
2
2
2
4
3
4
4
4
4
2
5
5
5
Wind waves
Height (m)
Direction
Period (s)
0.3
ENE
3
0.9
ENE
8
0.9
ENE
8
0.9
ENE
8
1
ENE
8
1
ENE
8
0.9
ENE
9
0.9
ENE
8
0.9
ENE
8
Energy kJ
2
81
81
99
151
154
131
120
125
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
1
1
1
Distance (km)
0
0
0
7
0
1304
1304
0
1290
1373
1290
1290
0
0
1290
0
0
0
0
2064
2064
1958
1958
1290
Best forecast wave conditions in Guam
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
Best forecast wave conditions in Guam
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
Header Global
Rating
(10 max)
6
5
5
5
5
5
5
5
5
5
5
5
5
5
4
5
4
5
5
5
6
6
6
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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