Boat Basin Lefts Surf Break
GUAM

Boat Basin Lefts 48 hour detailed Surf Forecast

Lat Long: 13.48° N 144.75° E

Issued: 9 pm 03 Jul 2026 (local time)

Forecast update in  hr  min

Today's Boat Basin Lefts sea temperature is
29.6° 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 (04 Jul):

  • Morning surf: Morning surf (04 Jul, local time) - 3.5ft (1.0m), 8s period with ENE swell.
  • Afternoon surf: Afternoon surf (04 Jul, local time) - 6.5ft (2.0m), 16s period with E swell.
  • Evening surf: Evening surf (04 Jul, local time) - 8ft (2.5m), 14s period with E swell.

The current surf forecast for Boat Basin Lefts at 5AM is: 0.8m 8s primary swell from a East-northeast direction and 0.5m 5s secondary swell from a North direction (forecast issued at 09:00pm July 03). An open ocean swell of 0.4m 9s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (ChST) & DateWave HeightWave Period
Morning (04 Jul)3.5ft (1.0m)8s
Afternoon (04 Jul)6.5ft (2.0m)16s
Evening (04 Jul)8ft (2.5m)14s

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 131mm), heaviest during Mon morning. Warm (max 30°C on Sat morning, min 26°C on Mon morning). Winds increasing (light winds from the NNE on Sat morning, severe gales from the WSW by Mon morning).

Fri
3
Saturday
4
Sunday
5
Monday
6
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
7 AM
10 AM
1 PM
4 PM
Rating
(10 max)
0
0
0
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)
0.7
ENE
8
0.7
E
8
0.9
ENE
8
0.8
ENE
8
0.8
ENE
8
1
ENE
8
0.8
E
12
2
E
16
2.3
E
14
2.5
E
14
2.5
E
14
3
E
14
3
E
14
3
ENE
14
3
E
14
3.5
E
15
4
E
15
4
E
15
4.5
ENE
16
4.5
ENE
15
4.5
ENE
15
5
NNE
14
5
N
14
4.5
N
13
Wave Graph
Metric surfscale
Energy kJ
72
68
120
92
92
150
193
1928
2218
2775
2651
3141
3606
3882
4122
5583
6963
6869
8781
8408
8268
9838
8809
6235
Wind (km/h)
20
NNE
20
NE
15
NE
15
NNE
15
NE
15
NNE
15
N
20
N
20
NNE
25
N
30
NNE
25
N
30
N
35
N
35
N
40
N
40
N
45
NNW
55
WNW
65
WNW
75
W
85
WSW
85
SW
80
SW
Wind State
cross
cross
cross
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
cross-on
cross-on
cross-on
cross
cross
High Tide
11:21PM0.87m
9:08AM0.80m
11:46PM0.88m
10:00AM0.76m
00:09AM0.89m
11:03AM0.72m
Low Tide
4:39AM0.65m
4:25PM0.18m
5:28AM0.61m
4:59PM0.25m
6:19AM0.55m
thunderstorm
clear
clear
thunderstorm
part cloud
clear
thunderstorm
thunderstorm
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
mod rain
mod rain
thunderstorm
thunderstorm
thunderstorm
thunderstorm
heavy rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:58
5:58
5:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:52
6:52
6:52
 mm
1
1
1
2
1
2
1
1
1
1
2
4
8
7
12
17
21
30
14
Temp °C
29
28
28
28
28
30
30
30
29
29
28
29
29
29
30
29
27
27
27
27
27
27
26
26
Feels °C
31
30
31
31
31
33
33
32
31
31
28
30
29
29
30
28
25
24
22
21
20
18
16
16
Swell 1
Height (m)
Direction
Period (s)
0.7
ENE
8
0.7
E
8
0.4
SE
10
0.8
ENE
8
0.8
ENE
8
1
ENE
8
1
ENE
9
2
E
16
2.3
E
14
2.5
E
14
2.5
E
14
3
E
14
3
E
14
3
ENE
14
3
E
14
3.5
E
15
4
E
15
4
E
15
4.5
ENE
16
4.5
ENE
15
4.5
ENE
15
5
NNE
14
5
N
14
4.5
N
13
Energy kJ
72
68
25
92
92
150
154
1928
2218
2775
2651
3141
3606
3882
4122
5583
6963
6869
8781
8408
8268
9838
8809
6235
Swell 2
Height (m)
Direction
Period (s)
0.3
SE
10
0.4
SE
10
0.3
NNE
11
0.4
SE
10
0.4
SE
9
0.5
E
12
0.8
E
12
0.4
SSE
9
0.4
NNE
10
0.4
SE
9
0.4
SE
9
0.3
SE
10
0.3
SE
10
0.2
SSE
10
1.5
NNE
8
2
NNE
9
2.2
N
10
0.2
SSE
9
0.1
SE
10
1.7
WNW
11
Energy kJ
16
25
24
23
22
75
193
32
34
22
23
14
14
9
306
600
1060
9
4
649
Swell 3
Height (m)
Direction
Period (s)
0.3
NNE
12
0.3
NNE
11
0.2
WSW
7
0.3
NNE
11
0.4
NNE
11
0.4
NNE
10
0.4
E
17
0.4
NNE
10
0.4
SE
9
0.3
NNE
10
0.2
SSE
9
0.1
SE
11
Energy kJ
26
24
4
23
38
35
87
34
22
19
8
5
Wind waves
Height (m)
Direction
Period (s)
0.4
NNE
3
0.7
NNE
4
0.9
ENE
8
0.5
N
4
0.5
N
5
0.4
NNE
10
1.1
N
5
0.4
NNE
10
0.6
N
10
0.3
NNE
10
1.5
N
6
1.8
N
6
1.9
N
7
2.2
N
7
2.2
NNW
7
2.5
NW
7
4
WNW
8
4.5
W
8
5.5
W
9
5.5
WSW
10
Energy kJ
4
14
120
10
11
33
61
32
70
18
156
255
319
466
440
722
1916
2438
4453
5424
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
3
1
1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
Distance (km)
1958
2074
1290
1290
1290
1290
11
1290
1290
1290
1290
1290
1290
1290
1836
1858
1837
1837
1837
1836
1836
1836
1836
1864
Best forecast wave conditions in Guam
Rating
(10 max)
3
Best forecast wave conditions in Guam
Rating
(10 max)
3
Header Global
Rating
(10 max)
9
7
5
5
5
8
7
5
6
5
5
4
5
5
9
9
9
8
7
5
5
5
5
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
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