- Forecast
- Maps
- Live
- Weather State
- Spot Information
Surf Forecasts:
Boat Basin Rights surfForecast / Guam / Guam
12 Day Weather and Surf, issued 9 am Thursday 18 Sep 2025 ChST
Best Forecast Surf Conditions for Boat Basin Rights this week:
The surf forecast for Boat Basin Rights over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Sep 20) at 10PM. The primary swell is predicted to be 0.8m and 5s period with a secondary swell of 0.2m and 9s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Boat Basin Rights in the next 12 days are 0.6m 12s and forecast to arrive on Thursday (Sep 25) at 10AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 11s period and expected on Thursday (Sep 25) at 4PM.
| Wave Type | Time (ChST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Sat 20th Sep) | 2.5ft (0.8m) 5s |
| Best Surf | 10PM (Sat 20th Sep) | 2.5ft (0.8m) 5s |
| Most Powerful | 10AM (Thu 25th Sep) | 2ft (0.6m) 12s |
Table - best surf conditions forecast for Boat Basin Rights over the next 12 days.
Short Range Forecast Heavy rain (total 28mm), heaviest during Sat night. Warm (max 29°C on Thu morning, min 27°C on Thu night). Wind will be generally light. | Days 3-6 Weather Summary Heavy rain (total 23mm), heaviest during Tue morning. Warm (max 29°C on Mon morning, min 26°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 8 | 8 | 11 | 5 | 5 | 9 | 9 | 9 | 8 | 6 | 6 | 6 | 8 | 7 | 7 | 7 | 9 | 8 | 8 | 8 | 11 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 18 | 69 | 40 | 18 | 12 | 15 | 13 | 6 | 74 | 53 | 51 | 43 | 61 | 51 | 58 | 37 | 71 | 78 | 61 | 65 | 97 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- off | cross- off | cross- on | cross | cross- off | cross- off | cross- off | cross- off | off | off | off | cross- off | off | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 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 | 9:19AM 0.84 | 8:47PM 0.85 | ||||||||
Low Tide / height (m) | 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 | 3:03PM 0.47 | 3:28AM 0.26 | |||||||
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | |||||||||||||||
| Sunrise | 6:09 | - | - | 6:09 | - | - | 6:09 | - | - | 6:09 | - | - | 6:09 | - | - | 6:09 | - | - | 6:09 | - | - |
| Sunset | - | 6:20 | - | - | 6:19 | - | - | 6:19 | - | - | 6:17 | - | - | 6:16 | - | - | 6:16 | - | - | 6:15 | - |
 |  |  | | | | | |  | | |  | | | | | |  | | | | |
Rain (mm) | - | 1 | 4 | 4 | - | 4 | 5 | 2 | 8 | 1 | - | - | - | 3 | 6 | 7 | 3 | 3 | 5 | 8 | 1 |
| Temp. °C | 29 | 28 | 28 | 28 | 28 | 28 | 29 | 28 | 28 | 28 | 28 | 27 | 29 | 28 | 27 | 28 | 29 | 28 | 28 | 28 | 28 |
| Feels °C (?) | 31 | 29 | 29 | 29 | 28 | 29 | 31 | 30 | 31 | 28 | 29 | 29 | 32 | 31 | 30 | 31 | 32 | 31 | 30 | 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)
Recent Eyeball Surf Reports for Guam
Continuing clean conditions at Boat Basin Rights (light winds from the E at Tamuning 3 km from Boat Basin Rights). 0.5m 8s swell from the ENE with a 0.3m 11s groundswell from the E. 2 swells combining to make bigger set waves.
Actual: 57 min ago
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 Rights 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 Boat Basin Rights Surf forecast
The above surf forecast table for Boat Basin Rights provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Boat Basin Rights can be found by selecting the local surf guide option on the grey menu. Our Boat Basin Rights 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 (Boat Basin Rights) 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 Boat Basin Rights 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.
Boat Basin Rights 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.
Nearest