Surf Forecasts:
Right and Left Side surf forecast from 26 Aug 2026:
- Best quality surf: Tuesday 1 Sep, 7PM (local time) - 6.5ft (2.0m), 10s period, W swell with cross-offshore winds.
- Most powerful swell: Thursday 3 Sep, 4AM (local time) - 6.5ft (2.0m), 13s period, W swell with 1,370 kJ wave energy.
- Next surfable swell (1★+): Tuesday 1 Sep, 7PM (local time) - 6.5ft (2.0m), 10s period with W swell.
Best Forecast Surf Conditions for Right and Left Side this week:
The surf forecast for Right and Left Side over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 01) at 7PM. The primary swell is predicted to be 2.0m and 10s period with a secondary swell of 0.4m and 10s. 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 16 days are 2.0m 13s and forecast to arrive on Thursday (Sep 03) 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 1.8m 7s period and expected on Friday (Aug 28) at 10PM.
| Wave Type | Time (ChST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Tue 1st Sep) | 6.5ft (2.0m) 10s |
| Best Surf | 7PM (Tue 1st Sep) | 6.5ft (2.0m) 10s |
| Most Powerful | 4AM (Thu 3rd Sep) | 6.5ft (2.0m) 13s |
Table - best surf conditions forecast for Right and Left Side over the next 16 days.
The Lowdown
Alright, let’s get into it. I’m looking at the forecast for the next 16 days, and the only spot that’s got any real data coming through is Right and Left Side. This is a reef break for advanced surfers only, and it’s inconsistent as hell, so don’t be expecting a wave every set. It also gets crowded sometimes, so keep that in mind. Water temperature is sitting at 85°F, which is bang on average for this time of year – nothing weird there.
The first few days are a total write-off. Thursday morning, 27th August, we’ve got a tiny 2ft swell from the ENE with only 11 seconds of period, and it’s cross-on with a light breeze. The combined energy is just 104 (weak), and the comment says “poor surf conditions.” That’s the theme until things start trying to change around the 30th. Sunday morning, 30th August, there’s a 6ft swell from the west, 11 seconds, and the energy climbs to 906 (strong) – but it’s still onshore wind and the forecast calls it marginal at best. The next few days are similar: up to 7ft west swell on Monday, Tuesday, but the wind is onshore or cross and the quality is still poor or marginal.
Now, here’s where it gets interesting. On Wednesday morning, 2nd September, we get a proper shift. The swell is 6ft from the west, period 10 seconds, but the wind is offshore from the ESE, 10 mph, giving us gentle offshore and clean conditions. The combined energy is 838 (strong) and the forecast says “expect very good surf conditions.” That’s a standout session – clean, 6ft west swell, offshore winds. The afternoon is similar. Thursday 3rd Sept gets a bit messy with stronger wind, although the swell direction swings to WNW. Friday 4th sees a 8ft west swell, but it’s cross-shore, so it’s not as good.
The real gem is Saturday morning, 5th September. We’ve got a 6ft west swell, period 10 seconds, and glassy conditions – zero wind. The energy is 593 (moderate), and it’s marked as “expect very good surf conditions.” That’s the best of the lot. Clean, glassy, 6ft west swell. After that, Sunday 6th and Monday 7th still have decent swell (5ft to 5ft, west) and good offshore wind, though the swell is smaller. The rest of the second week tails off with smaller waves and less favourable wind, so the real standouts are definitely the 2nd and the 5th of September.
So, to sum it up: the first week is mostly a write-off, but hang tight for Wednesday 2nd September and Saturday 5th September – those are your best bets. The 2nd has offshore winds and 6ft west swell, the 5th is glassy with 6ft west swell. Remember, this reef is for advanced surfers, and it’s inconsistent, so don’t be surprised if you’re waiting a while between sets. But when it’s on, it’s on.
Rusty.
Short Range ForecastHeavy rain (total 54mm), heaviest during Thu morning. Warm (max 29°C on Sat morning, min 25°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 36mm), heaviest during Mon morning. Warm (max 28°C on Sun morning, min 26°C on Sun afternoon). Mainly fresh winds. | ||||||||||||||||||||
Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | |||||||||||||||
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) | ENE 11 | ENE 11 | ENE 11 | ENE 13 | ENE 12 | ENE 12 | ENE 12 | W 9 | W 10 | W 11 | W 11 | W 10 | W 10 | W 10 | W 10 | W 11 | W 11 | W 10 | W 10 | W 10 | W 10 |
Wave Graph | |||||||||||||||||||||
69 | 68 | 69 | 93 | 131 | 127 | 90 | 364 | 650 | 850 | 890 | 867 | 789 | 730 | 926 | 935 | 890 | 785 | 770 | 632 | 530 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-on | on | cross-on | cross-on | cross-on | cross-on | on | on | on | cross-on | on | on | on | cross-on | cross | cross-off | off | off | cross-off |
High Tide | 8:21PM0.85m | 6:53AM0.85m | 8:41PM0.87m | 7:43AM0.85m | 9:00PM0.88m | 8:35AM0.85m | 9:20PM0.89m | 9:29AM0.83m | 9:42PM0.89m | 10:27AM0.81m | 10:06PM0.89m | 11:32AM0.79m | 10:34PM0.89m | ||||||||
Low Tide | 1:14PM0.17m | 1:40AM0.58m | 1:49PM0.19m | 2:17AM0.52m | 2:24PM0.24m | 2:55AM0.45m | 2:58PM0.30m | 3:34AM0.38m | 3:33PM0.38m | 4:15AM0.31m | 4:10PM0.46m | 5:00AM0.25m | 4:48PM0.54m | ||||||||
6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | |
— | 6:36 | — | — | 6:35 | — | — | 6:34 | — | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — | — | 6:31 | — | |
mm | 12 | 6 | 3 | 5 | 6 | 6 | — | 4 | 12 | 7 | 2 | 4 | 9 | 6 | 8 | — | — | — | 1 | 4 | 2 |
Temp °C | 27 | 27 | 27 | 28 | 28 | 27 | 29 | 28 | 28 | 28 | 27 | 28 | 27 | 28 | 27 | 28 | 28 | 27 | 29 | 28 | 28 |
Feels °C | 31 | 30 | 29 | 31 | 29 | 30 | 31 | 30 | 31 | 31 | 28 | 29 | 27 | 28 | 28 | 31 | 31 | 30 | 31 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | WSW 7 | WSW 7 | ENE 11 | WSW 7 | ENE 12 | W 7 | WSW 8 | W 9 | W 10 | W 11 | W 11 | W 10 | W 10 | SE 9 | W 10 | W 11 | W 11 | W 10 | W 10 | W 10 | W 10 |
131 | 96 | 64 | 96 | 131 | 117 | 191 | 364 | 650 | 850 | 890 | 867 | 789 | 23 | 926 | 935 | 890 | 785 | 770 | 632 | 530 | |
Swell 2 Height (m) Direction Period (s) | ENE 11 | ENE 11 | NW 10 | ENE 13 | NW 9 | SSW 7 | ENE 12 | ENE 11 | NE 11 | NE 11 | ENE 11 | NE 10 | NE 10 | NE 11 | NE 11 | NE 10 | NE 10 | NE 10 | NE 10 | NE 10 | SSE 9 |
69 | 68 | 34 | 93 | 30 | 90 | 90 | 84 | 57 | 56 | 44 | 26 | 26 | 29 | 29 | 28 | 37 | 49 | 50 | 50 | 106 | |
Swell 3 Height (m) Direction Period (s) | NW 10 | NW 10 | ENE 13 | NW 9 | SE 9 | ENE 12 | WNW 9 | SE 10 | SE 10 | SE 9 | SE 9 | SE 9 | SE 10 | S 10 | SE 9 | SE 9 | SE 9 | SE 9 | E 10 | E 10 | WNW 14 |
35 | 35 | 69 | 31 | 13 | 127 | 29 | 15 | 15 | 14 | 14 | 23 | 24 | 8 | 22 | 13 | 13 | 12 | 18 | 17 | 158 | |
Wind waves Height (m) Direction Period (s) | WSW 7 | SW 7 | WSW 7 | — | WSW 7 | — | — | WSW 8 | — | — | — | — | — | W 10 | — | — | — | — | — | — | — |
175 | 75 | 127 | — | 85 | — | — | 166 | — | — | — | — | — | 730 | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 11 | 11 | 16 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 1835 | 2064 | 1289 | 11 | 19 | 0 | 0 | 0 | 1995 |
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.











