
Surf Forecasts:
Right and Left Side surf forecast from 20 Jul 2026:
- Most powerful swell: Monday 20 Jul, 10PM (local time) - 1.5ft (0.5m), 9s period, E swell with 42 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 0.5m 9s and forecast to arrive on Monday (Jul 20) at 10PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Wednesday (Jul 22) at 1PM.
| Wave Type | Time (ChST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10PM (Mon 20th Jul) | 1.5ft (0.5m) 9s |
Table - best surf conditions forecast for Right and Left Side over the next 16 days.
The Lowdown
Alright, this is Rusty. Let's get real about this stretch.
Right and Left Side is a reef break that's meant to be a bit of a secret weapon around here, but honestly, looking at the next month, it's a tough pill to swallow. The water's sitting at a warm 84°F, which is pretty much what you'd expect for this time of year, nothing weird going on there.
The problem is, we're staring down the barrel of a long, flat spell. For the first week and a half, from Monday afternoon the 20th of July right through to the 28th of July, there's just nothing happening. The swell is tiny, with the combined energy barely creeping into double digits – we're talking readings like 44 (weak energy), 28, 27, 26. That's not surf, it's a lake. The wind does offer some nice glassy moments, especially on the 23rd and 24th, but with waves only 1ft from the ENE, it's a total non-event. There's a gap of about 8 days with zero recommendations.
Now, things look a bit more promising but it's a long way out. On Wednesday the 29th of July, the energy finally jumps up to 184 (moderate) with a 2ft swell from the west, but the wind is onshore and it's a messy cross-on situation. The next day, the 30th, the energy drops back down. It's just not clean.
The real tease comes at the start of August. On Saturday the 1st of August, we see a long-period groundswell from the ENE, with a period of 17 seconds, which is proper. The combined energy is 166 (moderate). But the swell is only 1ft, and we've got a strong cross-shore wind of 15 mph. That's a lot of trouble for a tiny wave. This pattern of moderate energy but small, wind-chopped swell continues through the 4th of August. For a reef break, this setup looks more interesting for kite surfing than paddle surfing.
The standout here, if you can call it that, is the morning of the 4th of August. The combined energy hits 298 (moderate to strong) with a 3ft swell from the ENE and a period of 13 seconds. But it's still cross-on wind at 15 mph. It's going to be a lumpy, challenging mess, but for a reef, that long-period groundswell might throw up a few more powerful ones. Just be warned, it's an advanced spot and it's inconsistent, even when there's swell. When it does break, crowds are possible.
To be honest, for the first 8 days, don't even bother. The rest of the window is a waiting game for a proper clean swell to line up with the wind. Forecasts can change, but right now, it's a lean period.
Rusty
Short Range ForecastHeavy rain (total 26mm), heaviest during Wed night. Warm (max 29°C on Mon afternoon, min 26°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Thu afternoon. Warm (max 29°C on Thu afternoon, min 26°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Mon 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | ||||||||||||||
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) | E 9 | E 9 | ENE 9 | ENE 9 | ENE 9 | SSW 7 | ENE 9 | SW 7 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 10 | ENE 9 | ENE 9 | ENE 9 |
Wave Graph | ||||||||||||||||||||
44 | 42 | 28 | 27 | 27 | 0 | 27 | 0 | 26 | 26 | 16 | 26 | 25 | 24 | 14 | 14 | 31 | 26 | 26 | 26 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | glassy | cross-off | off | cross-off | cross | cross | cross | glassy | glassy | glassy | glassy | cross | cross | cross-off | cross | cross-off | cross-off | cross-off | cross-off |
High Tide | 00:26AM0.90m | 1:30PM0.68m | 00:54AM0.88m | 3:12PM0.67m | 1:23AM0.85m | 5:00PM0.69m | 1:58AM0.83m | 6:20PM0.73m | 2:40AM0.82m | 7:09PM0.76m | 7:46PM0.79m | |||||||||
Low Tide | 5:50PM0.42m | 7:27AM0.37m | 6:26PM0.53m | 8:22AM0.32m | 7:07PM0.61m | 9:16AM0.28m | 8:04PM0.67m | 10:07AM0.24m | 9:26PM0.70m | 10:56AM0.20m | 10:49PM0.71m | 11:42AM0.16m | 11:53PM0.71m | |||||||
— | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | |
6:51 | — | — | 6:51 | — | — | 6:51 | — | — | 6:51 | — | — | 6:51 | — | — | 6:50 | — | — | 6:50 | — | |
mm | 2 | — | — | 1 | 2 | 1 | 7 | 8 | 5 | 3 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 29 | 27 | 29 | 28 | 27 | 28 | 28 | 27 | 28 | 29 | 28 | 28 | 28 | 27 | 28 | 28 | 27 | 29 | 28 | 27 |
Feels °C | 32 | 31 | 31 | 29 | 30 | 30 | 30 | 31 | 33 | 33 | 32 | 32 | 31 | 30 | 32 | 30 | 31 | 32 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | SW 7 | WSW 7 | WSW 7 | SW 7 | SW 7 | SSW 7 | SW 7 | SW 7 | SW 7 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 9 | WSW 9 | WSW 9 | WSW 10 | WSW 10 | WSW 10 | WSW 9 |
50 | 44 | 32 | 56 | 39 | 111 | 121 | 107 | 107 | 103 | 103 | 108 | 134 | 151 | 158 | 146 | 169 | 197 | 166 | 146 | |
Swell 2 Height (m) Direction Period (s) | SSE 9 | SSE 9 | ENE 9 | S 6 | SE 11 | WSW 7 | SE 10 | SE 10 | SE 9 | SE 9 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 |
47 | 47 | 28 | 18 | 41 | 41 | 35 | 47 | 54 | 55 | 60 | 61 | 63 | 63 | 61 | 79 | 60 | 46 | 45 | 23 | |
Swell 3 Height (m) Direction Period (s) | E 9 | E 9 | SSE 6 | ENE 9 | ENE 9 | SE 10 | ENE 9 | SSE 5 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 10 | ENE 9 | ENE 9 | ENE 9 |
44 | 42 | 13 | 27 | 27 | 37 | 27 | 9 | 26 | 26 | 16 | 26 | 25 | 24 | 14 | 14 | 31 | 26 | 26 | 26 | |
Wind waves Height (m) Direction Period (s) | — | — | — | E 3 | SSE 6 | — | — | — | — | — | — | — | — | — | — | ENE 3 | E 3 | NNE 7 | NE 7 | ENE 3 |
— | — | — | 5 | 18 | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 5 | 2 | 1 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 2234 | 1 | 2074 | 14 | 2189 | 230 | 230 | 11 | 11 | 11 | 230 | 14 | 23 | 19 | 13 | 19 | 13 | 13 | 14 | 13 |
Best forecast wave conditions in Guam | ||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.










