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 17 Jun 2026 (local time)

Forecast update in  hr  min

Today's Boat Basin Lefts sea temperature is
29.5° 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 (17 Jun):

  • Morning surf: Morning surf (17 Jun, local time) - 3ft (0.9m), 9s period with ENE swell.
  • Afternoon surf: Afternoon surf (17 Jun, local time) - 2.5ft (0.8m), 8s period with ENE swell.
  • Evening surf: Evening surf (17 Jun, local time) - 3ft (0.9m), 8s period with ENE swell.

The current surf forecast for Boat Basin Lefts at 1PM is: 0.8m 8s primary swell from a East-northeast direction (forecast issued at 09:00am June 17). An open ocean swell of 0.5m 9s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (ChST) & DateWave HeightWave Period
Morning (17 Jun)3ft (0.9m)9s
Afternoon (17 Jun)2.5ft (0.8m)8s
Evening (17 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

Heavy rain (total 53mm), heaviest during Thu morning. Warm (max 30°C on Wed morning, min 27°C on Thu night). Wind will be generally light.

Wednesday
17
Thursday
18
Friday
19
Sat
20
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
0
0
0
0
0
1
1
0
0
0
0
1
1
1
1
0
1
0
1
1
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
ENE
9
0.9
ENE
9
0.8
ENE
8
0.8
ENE
8
0.9
ENE
8
0.9
ENE
8
1
ENE
8
1
ENE
8
1
ENE
8
1.1
ENE
8
1.1
ENE
8
1.1
ENE
8
1.1
ENE
8
1.1
E
8
1
ENE
8
1.2
ENE
8
1.1
E
8
1.1
E
8
0.9
ENE
8
0.8
ENE
8
0.8
ENE
8
0.6
E
8
0.8
ENE
8
0.8
ENE
8
Wave Graph
Metric surfscale
Energy kJ
103
108
82
78
94
94
125
125
125
146
146
176
176
165
140
179
149
149
104
83
85
47
81
79
Wind (km/h)
10
E
15
ENE
15
ENE
20
ENE
15
ENE
20
ENE
15
E
10
ENE
10
NE
20
ENE
20
ENE
20
ENE
15
E
10
ENE
10
ENE
5
ENE
10
SSE
20
S
15
S
15
SSE
20
SSE
25
SSE
25
SSE
20
SSE
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
glassy
cross-off
cross-off
cross-off
cross-off
off
off
cross-off
cross-off
High Tide
7:45AM0.94m
11:02PM0.95m
8:41AM0.91m
11:45PM0.94m
9:41AM0.85m
00:25AM0.93m
Low Tide
3:25PM-0.07m
4:05AM0.70m
4:14PM-0.01m
5:06AM0.66m
5:02PM0.09m
clear
part cloud
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
cloud
thunderstorm
thunderstorm
thunderstorm
<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>
6:49
6:49
6:49
6:50
 mm
1
5
1
1
1
6
5
5
2
1
3
2
4
3
2
1
2
6
Temp °C
28
29
30
29
28
28
28
28
28
29
29
29
28
28
27
27
27
27
27
27
27
28
28
27
Feels °C
32
32
33
31
30
31
31
32
32
32
31
31
31
31
31
31
30
29
30
29
28
29
29
28
Swell 1
Height (m)
Direction
Period (s)
0.8
ENE
9
0.9
ENE
9
0.8
ENE
8
0.8
ENE
8
0.9
ENE
8
0.5
SE
9
0.5
SE
9
1
ENE
8
1
ENE
8
1.1
ENE
8
1.1
ENE
8
1.1
ENE
8
1.1
ENE
8
1.1
E
8
1
ENE
8
1.2
ENE
8
1.1
E
8
1.1
E
8
0.9
ENE
8
0.8
ENE
8
0.8
ENE
8
0.6
E
8
0.8
ENE
8
0.8
ENE
8
Energy kJ
103
108
82
78
94
40
40
125
125
146
146
176
176
165
140
179
149
149
104
83
85
47
81
79
Swell 2
Height (m)
Direction
Period (s)
0.5
SE
9
0.5
SE
9
0.5
SE
9
0.5
SE
9
0.5
SE
9
0.3
NNE
8
0.3
NNE
8
0.5
SE
9
0.5
SE
9
0.5
SE
9
0.5
SE
9
0.5
SE
9
0.5
SE
11
0.5
N
7
0.6
N
6
0.5
SE
10
0.5
N
6
0.5
SE
10
0.5
SE
10
0.5
SE
10
0.5
SE
10
0.6
ENE
8
0.5
SE
10
0.4
SE
9
Energy kJ
41
41
41
41
41
13
13
39
40
40
40
40
55
28
24
48
21
48
48
47
46
37
44
31
Swell 3
Height (m)
Direction
Period (s)
0.3
N
9
0.3
N
9
0.3
N
8
0.3
N
8
0.3
NNE
8
0.2
S
8
0.2
S
8
0.3
NNE
8
0.3
NNE
8
0.3
NNE
8
0.3
NNE
8
0.4
NNE
7
0.4
N
7
0.5
SE
10
0.5
SE
10
0.3
NNE
8
0.1
N
10
0.4
NNE
7
0.4
NNE
6
0.3
NNE
6
0.3
NNE
6
0.5
SE
10
0.3
NNE
7
0.3
NNE
7
Energy kJ
14
14
13
12
13
4
4
12
11
11
11
18
17
52
49
11
2
17
13
8
8
45
9
9
Wind waves
Height (m)
Direction
Period (s)
0.9
ENE
8
1
ENE
8
0.7
SE
10
0.7
SSE
4
0.9
SSE
5
0.9
SSE
5
0.8
SSE
5
0.7
S
5
0.6
S
5
0.6
S
4
Energy kJ
94
125
100
18
32
32
28
21
15
15
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
2270
2264
2264
1290
1290
0
0
1290
1290
1290
1290
0
0
0
0
1290
0
1290
0
0
1290
1290
Best forecast wave conditions in Guam
Rating
(10 max)
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
Header Global
Rating
(10 max)
4
6
5
5
4
5
4
4
4
5
8
9
9
6
5
5
6
5
7
7
6
9
4
7
  • 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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