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 27 Aug 2026 (local time)

Forecast update in  hr  min

Today's Boat Basin Lefts sea temperature is
29.4°C
0.1° 

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 (27 Aug):

  • Morning surf: Morning surf (27 Aug, local time) - 1.5ft (0.5m), 11s period with ENE swell.
  • Afternoon surf: Afternoon surf (27 Aug, local time) - 1.5ft (0.5m), 11s period with ENE swell.
  • Evening surf: Evening surf (27 Aug, local time) - 1.5ft (0.5m), 11s period with ENE swell.

The current surf forecast for Boat Basin Lefts at 1PM is: 0.5m 11s primary swell from a East-northeast direction (forecast issued at 09:00am August 27). An open ocean swell of 1.0m 7s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (ChST) & DateWave HeightWave Period
Morning (27 Aug)1.5ft (0.5m)11s
Afternoon (27 Aug)1.5ft (0.5m)11s
Evening (27 Aug)1.5ft (0.5m)11s

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


Short Range Forecast

Heavy rain (total 70mm), heaviest during Sat night. Warm (max 28°C on Thu morning, min 25°C on Sat night). Wind will be generally light.

Thursday
27
Friday
28
Saturday
29
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
0
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)
0.5
ENE
11
0.5
ENE
11
0.5
ENE
11
0.5
ENE
11
0.6
ENE
11
0.5
ENE
11
0.5
ENE
11
0.7
ENE
13
0.5
ENE
13
0.5
ENE
13
0.6
ENE
12
0.6
ENE
12
0.6
ENE
12
1.6
W
6
1.2
WNW
7
0.7
ENE
12
0.6
ENE
12
0.6
ENE
12
0.6
ENE
12
1.4
W
8
1.5
W
9
1.6
W
9
Wave Graph
Metric surfscale
Energy kJ
70
69
68
68
79
64
64
154
98
93
101
99
99
177
127
123
96
90
88
277
359
445
Wind (km/h)
10
WNW
5
WNW
10
WSW
15
WSW
15
W
15
W
15
W
10
W
10
W
15
W
20
W
20
WNW
25
WNW
20
NW
15
WNW
15
W
15
W
15
W
20
W
20
WNW
15
WNW
20
NW
Wind State
cross-on
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
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
High Tide
6:01AM0.83m
8:21PM0.85m
6:53AM0.85m
8:41PM0.87m
7:43AM0.85m
9:00PM0.88m
Low Tide
1:14PM0.17m
1:40AM0.58m
1:49PM0.19m
2:17AM0.52m
2:24PM0.24m
thunderstorm
mod rain
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
part cloud
thunderstorm
thunderstorm
mod rain
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>
6:36
6:35
6:34
 mm
4
7
1
1
3
1
2
2
4
6
2
2
3
2
2
2
4
7
Temp °C
28
28
28
28
28
28
27
27
28
28
28
28
27
27
27
27
27
28
28
28
27
27
Feels °C
31
32
31
30
31
31
29
30
32
31
30
30
28
29
30
30
29
30
30
30
29
29
  • 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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