Boat Basin Lefts surf break

Boat Basin Lefts surfForecast / Guam / Guam

information circle48hr Weather and Surf, issued 3 am Wednesday 16 Jul 2025 ChST
Forecast update in hr  min  s Forecast update imminent
Boat Basin Lefts surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Boat Basin Lefts sea temperature is
29.6° C
(Which is normal for this time of year)


How big are the waves at Boat Basin Lefts today?

The current surf forecast for Boat Basin Lefts at 10AM is: 1.0m 10s primary swell from a East direction (forecast issued at 03:00am July 16). An open ocean swell of 0.4m 12s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (ChST) & DateWave HeightWave Period
Morning (16 Jul)3.5ft (1.0m)10s
Afternoon (16 Jul)3.5ft (1.1m)10s
Evening (16 Jul)3.5ft (1.1m)10s

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

Updates in  hr  min  s Forecast update imminent
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
1AM4AM7AM10AM1PM4PM7PM10PM1AM4AM7AM10AM1PM4PM7PM10PM1AM4AM7AM10AM1PM4PM7PM10PM1AM4AM7AM10AM1PM4PM7PM10PM1AM4AM7AM10AM1PM4PM7PM10PM1AM4AM7AM10AM1PM4PM7PM10PM1AM4AM7AM10AM1PM4PM7PM10PM1AM4AM7AM10AM
Rating
(10 max)
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1
E
1
E
1
E
1
E
1
E
1.1
E
1.1
E
1.1
E
1.1
E
1.1
E
1.2
E
1.2
E
1.2
E
1.2
E
1.2
E
1.1
E
1.2
E
1.2
E
1.2
E
1.1
E
1.1
E
1.1
E
1.1
E
0.9
E
1.3
E
1.3
E
1.2
E
1.2
E
1.2
E
1.1
E
1.1
E
1
E
1
E
1
E
0.9
E
0.7
E
0.6
ENE
0.9
E
0.8
E
0.9
E
0.8
E
0.8
E
0.8
E
0.8
E
0.8
E
0.7
E
0.7
E
0.7
E
0.7
E
0.8
E
0.8
E
1
W
1.1
W
1.3
W
1.4
W
1.5
W
1.6
W
1.7
W
1.8
W
1.9
W
Period(s) (?)9991010101010101010101091099910101010101010101010101010101010910999999999999999101111111112121212
Wave
Graph
(?)Metric surfscale
Energy (?)168171185181184225230230235235262260260249262207251251257231226221220148313528455262262223226187194191149926213410613610810810811011389859012512212834643057064472191099910791193
Wind
(km/h)
15
ESE
10
ESE
10
ESE
10
ESE
15
ESE
15
ESE
10
ESE
15
SE
15
SE
15
SE
15
SE
15
SE
15
SE
10
ESE
15
ESE
15
ESE
15
ESE
15
ESE
15
E
20
E
20
E
20
ESE
15
E
15
E
15
ENE
15
E
15
E
15
E
15
E
10
ESE
5
ESE
5
E
0
ESE
0
NE
5
SE
5
ESE
10
SE
10
SE
10
SE
10
SE
20
SE
20
SE
20
SE
20
SSE
20
S
10
S
15
S
15
SSW
15
SW
10
SW
5
SSW
10
SSW
15
SW
15
WSW
15
SSE
10
WSW
10
WSW
10
W
5
SSE
15
SE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
offoffoffoffoffoffoffoffoffoffoffoffcross-
off
cross-
off
offcross-
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
offoffglassglassglassglassglassoffoffoffoffoffoffoffoffcross-
off
cross-
off
cross-
off
cross-
off
crosscross-
off
cross-
off
cross-
off
cross-
off
crosscross-
off
cross-
on
cross-
on
cross-
on
glassoff
High Tide
/ height (m)
11:45PM
0.92
10:53AM
0.77
12:12AM
0.92
12:13PM
0.72
12:41AM
0.92
1:49PM
0.70
1:14AM
0.92
3:39PM
0.72
1:52AM
0.91
5:22PM
0.77
2:38AM
0.91
6:39PM
0.82
3:33AM
0.90
7:35PM
0.86
4:32AM
0.90
Low Tide
/ height (m)
5:51AM
0.53
5:22PM
0.30
6:47AM
0.44
6:05PM
0.41
7:44AM
0.35
6:54PM
0.52
8:43AM
0.26
7:55PM
0.62
9:43AM
0.17
9:14PM
0.69
10:41AM
0.09
10:39PM
0.73
11:38AM
0.03
11:54PM
0.74
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
Sunrise--6:01-------6:01-------6:01-------6:01-------6:01-------6:01-------6:03-------6:03-
Sunset-----6:52-------6:52-------6:52-------6:52-------6:51-------6:51-------6:51------
thunderstorm part cloudthunderstorm thunderstorm part cloudpart cloudpart cloudthunderstorm thunderstorm thunderstorm thunderstorm thunderstorm cloudcloudthunderstorm thunderstorm thunderstorm part cloudpart cloudthunderstorm part cloudpart cloudthunderstorm thunderstorm part cloudpart cloudthunderstorm thunderstorm thunderstorm thunderstorm thunderstorm thunderstorm thunderstorm cloudcloudthunderstorm part cloudpart cloudclearthunderstorm thunderstorm thunderstorm thunderstorm thunderstorm thunderstorm thunderstorm light rainthunderstorm part cloudpart cloudthunderstorm thunderstorm thunderstorm thunderstorm thunderstorm thunderstorm cloudthunderstorm thunderstorm thunderstorm
Rain (mm)
3-12---14521--221--1--23--1122122--1---131223211--144452-233
Temp. °C272828292929292828272828292928282827282929292828282828292928282827272728293028282727272927262626262727282828262627272726
Feels °C (?)293131323131323031303130323331313130313130313131313130323231323231313132323331312929293028292929293131323031293030313229
  • 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

Eyeball surf reportRecent Eyeball Surf Reports for Guam

  1. weather stationWind Update Continuing clean conditions at Boat Basin Lefts (calm at Tamuning 3 km from Boat Basin Lefts). 0.1m 6s windswell from the NW with a 0.1m 6s windswell from the NW

    Boat Basin Lefts
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