Boat Basin Lefts Surf Break

Lat Long: 13.48° N 144.75° E

GUAM

Boat Basin Lefts 48 hour detailed Surf Forecast

Issued: 9 am 29 Aug 2026 (local time)

Forecast update in  hr  min

Today's Boat Basin Lefts sea temperature is
29.5°C
0.2° 

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 (29 Aug):

  • Morning surf: Morning surf (29 Aug, local time) - 2ft (0.6m), 12s period with ENE swell.
  • Afternoon surf: Afternoon surf (29 Aug, local time) - 4ft (1.2m), 7s period with W swell.
  • Evening surf: Evening surf (29 Aug, local time) - 2.5ft (0.8m), 9s period with NW swell.

The current surf forecast for Boat Basin Lefts at 5PM is: 1.2m 7s primary swell from a West direction and 0.6m 11s secondary swell from a East-northeast direction (forecast issued at 09:00am August 29). An open ocean swell of 0.3m 10s is not directed at the surf break. The wind direction is predicted to be onshore.

Time (ChST) & DateWave HeightWave Period
Morning (29 Aug)2ft (0.6m)12s
Afternoon (29 Aug)4ft (1.2m)7s
Evening (29 Aug)2.5ft (0.8m)9s

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


Short Range Forecast

Heavy rain (total 27mm), heaviest during Sun afternoon. Warm (max 28°C on Sat morning, min 26°C on Sun night). Wind will be generally light.

Saturday
29
Sunday
30
Monday
31
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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.6
ENE
12
0.6
ENE
12
0.6
ENE
12
1.2
W
7
1.2
W
7
0.8
NW
9
0.8
NW
8
0.8
NW
8
0.8
NW
8
0.8
NW
8
0.4
ENE
11
0.4
ENE
10
0.9
W
8
0.8
W
8
1.2
WNW
8
1.2
WNW
6
0.9
NW
8
0.9
NW
9
1
WNW
10
1.4
W
10
1.3
W
9
1.6
W
9
Wave Graph
Metric surfscale
Energy kJ
91
90
94
128
128
93
79
93
97
97
44
43
98
74
202
91
115
115
179
356
288
416
Wind (km/h)
20
NW
20
NW
20
NW
20
NW
20
NW
20
NNW
20
NNW
20
NNW
20
NNW
20
NNW
25
NW
20
NW
20
NW
25
NW
25
WNW
20
WNW
20
WNW
20
WNW
20
WNW
15
WNW
10
WNW
5
WNW
Wind State
on
on
on
on
on
on
on
on
cross-on
cross-on
on
on
on
on
on
on
on
on
on
cross-on
on
on
High Tide
7:43AM0.85m
9:00PM0.88m
8:35AM0.85m
9:20PM0.89m
9:29AM0.83m
9:42PM0.89m
Low Tide
2:24PM0.24m
2:55AM0.45m
2:58PM0.30m
3:34AM0.38m
3:33PM0.38m
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
cloud
cloud
cloud
thunderstorm
thunderstorm
cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:09
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:34
6:34
6:32
 mm
2
3
3
1
1
1
1
1
4
3
1
2
1
1
3
1
Temp °C
28
28
28
28
28
28
28
28
28
28
28
27
27
26
26
27
27
27
28
27
27
27
Feels °C
30
30
30
30
30
30
30
30
31
30
29
29
29
26
27
28
29
29
29
29
30
31
  • 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 

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Boat Basin Lefts surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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