
Surf Forecasts:
Right and Left Side surf forecast from 8 Aug 2026:
- Most powerful swell: Thursday 13 Aug, 4AM (local time) - 10ft (3.0m), 12s period, WNW swell with 2,808 kJ wave energy.
Best Forecast Surf Conditions for Right and Left Side this week:
The most powerful waves expected at Right and Left Side in the next 16 days are 3.0m 12s and forecast to arrive on Thursday (Aug 13) at 4AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 10s period and expected on Thursday (Aug 13) at 1PM.
| Wave Type | Time (ChST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4AM (Thu 13th Aug) | 10ft (3.0m) 12s |
Table - best surf conditions forecast for Right and Left Side over the next 16 days.
The Lowdown
Alright, Rusty here, looking at the next couple of weeks for *Right and Left Side*, a reef break that’s pretty exposed. Let’s break it down.
The first week is a bit of a chore. From Saturday the 8th through the 17th, the wind is a pain in the neck. It’s mostly cross or cross-onshore, with a solid 12 to 19 mph breeze, making the surface lumpy and choppy. The swell sits around 7 ft to 8 ft from the west, with a period of 10 to 11 seconds, giving us moderate wave energy (between 1013 and 1785). The water temperature is a warm 85°, which is pretty normal for the time of year. But with that wind, it’s just not clean. The wave comment says "marginal" or "poor" for most of this stretch, and honestly, it’s a tough call to paddle out. The swell is a bit too big for beginners in the middle of the week, and the cross-chop is going to make it a battle. For a few days around the 11th and 12th, the swell pushes over 8 ft and the wind turns onshore, so that’s really only for the experts or the masochists. This setup might even be more interesting for kite surfing than regular paddle surfing.
The real standout, the one that has me hyped, is the Tuesday morning of the 18th. That’s the day. The wind swings around to an offshore breeze from the ESE at just 3 mph, and the wave comment says "expect good surf conditions." The swell is 6 ft from the west, with a period of 8 seconds. The energy is moderate (498), but the wind is the key here. It’s going to be clean. The afternoon on the 18th gets even better—glass-off conditions with a light SSW breeze, and the swell drops to a more manageable 5 ft. That’s the pick of the trip. The morning of the 19th is also glassy with a 4 ft west swell, which is a great option for a longer session, but the 18th is the best on offer.
The second week fades fast. After the 19th, wind picks up again, and the swell drops off a cliff. By the 20th, we’re looking at 2 ft waves, and the energy drops to 92. The 21st has some small, clean waves with an offshore breeze, but it’s 1 ft. It’s a soft, small-scale end to the window. The 22nd and 23rd are blown out with strong winds hitting 25 to 31 mph, so forget about it.
So, if you’re looking for a window, the 18th and 19th of August are your days. The 18th is the standout for clean, glassy waves. The rest of the run is a wait-and-see game.
- Rusty
Short Range ForecastHeavy rain (total 23mm), heaviest during Mon night. Warm (max 29°C on Sun morning, min 26°C on Mon night). Mainly fresh winds. | Days 4-6 Weather SummaryHeavy rain (total 22mm), heaviest during Tue morning. Warm (max 29°C on Thu morning, min 27°C on Tue morning). Mainly fresh winds. | ||||||||||||||||||||
Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 11 | W 11 | W 11 | W 11 | W 11 | W 10 | WNW 12 | WNW 11 | W 10 | W 10 | W 10 | W 10 | W 10 |
Wave Graph | |||||||||||||||||||||
771 | 830 | 867 | 1109 | 1066 | 1137 | 1013 | 1124 | 1432 | 1493 | 1430 | 1124 | 1089 | 1070 | 2622 | 1783 | 1345 | 1280 | 1060 | 875 | 782 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross | cross | cross | cross | cross-on | cross | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 5:38PM0.78m | 2:19AM0.89m | 6:40PM0.83m | 3:28AM0.89m | 7:26PM0.87m | 4:39AM0.91m | 8:03PM0.90m | 5:47AM0.92m | 8:36PM0.91m | 6:51AM0.92m | 9:07PM0.92m | 7:51AM0.91m | 9:35PM0.92m | ||||||||
Low Tide | 9:14PM0.73m | 10:34AM0.07m | 10:45PM0.74m | 11:34AM0.03m | 11:57PM0.72m | 12:29PM0.00m | 00:55AM0.68m | 1:19PM0.01m | 1:47AM0.62m | 2:05PM0.06m | 2:35AM0.56m | 2:47PM0.13m | 3:22AM0.49m | ||||||||
6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | |
— | 6:45 | — | — | 6:45 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | — | 6:44 | — | — | 6:43 | — | |
mm | 1 | 1 | 1 | — | — | — | 2 | 2 | 16 | 7 | 4 | 8 | 2 | 1 | — | — | — | — | — | — | 1 |
Temp °C | 28 | 28 | 28 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 28 | 28 | 28 | 28 | 28 |
Feels °C | 29 | 29 | 30 | 29 | 30 | 30 | 28 | 28 | 29 | 28 | 29 | 30 | 30 | 29 | 30 | 30 | 29 | 31 | 29 | 29 | 31 |
Swell 1 Height (m) Direction Period (s) | NW 11 | NW 12 | ENE 13 | ENE 12 | NE 12 | NE 11 | NW 12 | NW 13 | SE 10 | SE 11 | SE 11 | W 11 | SE 10 | SE 10 | WNW 12 | WNW 11 | SE 10 | W 10 | SE 11 | SE 11 | NW 12 |
147 | 207 | 225 | 184 | 142 | 63 | 244 | 326 | 15 | 19 | 30 | 1124 | 35 | 35 | 2622 | 1783 | 53 | 1280 | 56 | 55 | 53 | |
Swell 2 Height (m) Direction Period (s) | ENE 10 | ENE 10 | NW 12 | SE 10 | SE 9 | SE 9 | NE 11 | NE 11 | NE 10 | NNE 10 | NNE 10 | SE 10 | NNE 10 | NNE 10 | SE 10 | SE 10 | ENE 11 | SE 11 | E 10 | ENE 10 | SE 10 |
95 | 94 | 137 | 24 | 23 | 14 | 31 | 30 | 17 | 10 | 10 | 38 | 10 | 18 | 37 | 37 | 11 | 57 | 2 | 10 | 39 | |
Swell 3 Height (m) Direction Period (s) | SE 9 | NE 14 | SE 10 | NW 11 | NW 11 | S 9 | SE 9 | SE 9 | E 13 | E 11 | E 10 | NNE 10 | E 10 | E 10 | NNE 9 | N 9 | N 8 | ENE 11 | NE 11 | N 13 | NNW 7 |
22 | 96 | 27 | 19 | 18 | 2 | 13 | 13 | 13 | 9 | 8 | 9 | 7 | 7 | 8 | 2 | 1 | 11 | 5 | 3 | 5 | |
Wind waves Height (m) Direction Period (s) | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 11 | W 11 | W 11 | — | W 11 | W 10 | — | — | W 10 | — | W 10 | W 10 | W 10 |
771 | 830 | 867 | 1109 | 1066 | 1137 | 1013 | 1124 | 1432 | 1493 | 1430 | — | 1089 | 1070 | — | — | 1345 | — | 1060 | 875 | 782 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1835 | 1906 | 16 | 1835 | 1904 | 1835 | 1835 | 1904 | 1858 | 1835 | 1835 | 16 | 1835 | 1863 | 1835 | 1289 | 1835 | 1865 | 2255 | 2068 | 1289 |
Best forecast wave conditions in Guam | |||||||||||||||||||||
Best forecast wave conditions in Guam | |||||||||||||||||||||
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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 16 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.











