Right and Left Side surfForecast / Guam / Guam

information circle12 Day Weather and Surf, issued 3 am Wednesday 17 Sep 2025 ChST
Forecast update in hr  min  s Forecast update imminent
Right and Left Side surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Right and Left Side sea temperature is
29.9° C
(Which is slightly warmer than usual)


Best Forecast Surf Conditions for Right and Left Side this week:

The surf forecast for Right and Left Side over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 17) at 10AM. The primary swell is predicted to be 0.3m and 12s period with a secondary swell of 0.5m and 5s. Another secondary swell of 0.4m and 8s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Right and Left Side in the next 12 days are 0.8m 8s and forecast to arrive on Monday (Sep 22) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 7s period and expected on Tuesday (Sep 23) at 10AM.

Wave TypeTime (ChST) & Date Wave Height & Period
Next good surf (1 star+)10AM (Wed 17th Sep)1ft (0.3m) 12s
Best Surf10AM (Wed 17th Sep)1ft (0.3m) 12s
Most Powerful 4AM (Mon 22nd Sep)2.5ft (0.8m) 8s

Table - best surf conditions forecast for Right and Left Side over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Heavy rain (total 31mm), heaviest during Wed morning. Warm (max 29°C on Fri morning, min 25°C on Wed morning). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 39mm), heaviest during Sun night. Warm (max 29°C on Sat morning, min 26°C on Mon night). Wind will be generally light.

Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
1
1
0
0
0
0
0
0
0
0
1
1
0
1
1
1
1
1
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.3
ENE
0.6
E
0.4
ENE
0.3
E
0.3
ENE
0.3
ENE
0.3
ENE
0.3
E
0.7
E
0.3
E
0.7
E
0.5
W
0.6
W
0.7
E
0.7
E
0.8
E
0.8
E
0.9
E
0.6
E
0.7
E
0.7
E
Period(s) (?)12991111111096978868886798
Wave
Graph
(?)Metric surfscale
Energy kJ (?)285730212323201434145432493460787650397468
Wind
(km/h)
15
S
10
S
20
ESE
25
ESE
20
ESE
10
ENE
20
ENE
20
ENE
15
E
20
E
15
ESE
15
ESE
10
E
15
E
10
ESE
15
E
15
SE
10
S
15
SSW
25
SSW
20
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
cross-
off
cross-
off
cross
High Tide
/ height (m)
6:02PM
0.83
3:28AM
0.79
6:36PM
0.84
4:46AM
0.80
7:03PM
0.85
5:52AM
0.82
7:26PM
0.86
6:49AM
0.83
7:47PM
0.87
7:42AM
0.84
8:07PM
0.87
8:31AM
0.85
8:27PM
0.86
Low Tide
/ height (m)
10:07AM
0.16
11:04PM
0.67
11:07AM
0.18
11:57PM
0.62
11:58AM
0.20
12:39AM
0.55
12:42PM
0.24
1:16AM
0.49
1:20PM
0.29
1:50AM
0.42
1:56PM
0.35
2:22AM
0.35
2:30PM
0.41
2:55AM
0.30
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Sunrise6:09--6:09--6:09--6:09--6:09--6:09--6:09--
Sunset-6:21--6:20--6:20--6:19--6:17--6:16--6:16-
mod rain
thunderstorm
part cloud
part cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
Rain (mm)
84---14591310-4121177109
Temp. °C272526282828292828292928292827292827282828
Feels °C (?)302827293030303031313231323030313030302930
  • 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 Right and Left Side (light winds from the SE at Tamuning 4 km from Right and Left Side). 0.3m 12s groundswell from the E to make surfable waves.

    Right and Left Side
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Actual: 36 min ago

8 km/h
SE
Clean
Please reload the page to see if there are any updates.

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 Right and Left Side 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.


Information about the Right and Left Side Surf forecast

The above surf forecast table for Right and Left Side provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Right and Left Side can be found by selecting the local surf guide option on the grey menu. Our Right and Left Side surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Right and Left Side) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Right and Left Side may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Right and Left Side is 1 km (1 miles) from Agana. If you plan a holiday in Guam, look for hotels and other accommodation in Agana. Agana has rooms for a wide range of budgets as well as car hire and transport links.

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