Surf Forecasts:
The Tree surf forecast from 19 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 9PM (local time) - 3ft (0.9m), 16s period, SW swell with glassy winds.
- Most powerful swell: Friday 21 Aug, 12AM (local time) - 4.5ft (1.4m), 12s period, SSW swell with 480 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 9PM (local time) - 3ft (0.9m), 16s period with SW swell.
Best Forecast Surf Conditions for The Tree this week:
The surf forecast for The Tree over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 18) at 9PM. The primary swell is predicted to be 0.9m and 16s period with a secondary swell of 1.0m and 8s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at The Tree in the next 16 days are 1.4m 12s and forecast to arrive on Friday (Aug 21) at 12AM. Winds are predicted to be glassy at the time the swell arrives.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Tue 18th Aug) | 3ft (0.9m) 16s |
| Best Surf | 9PM (Tue 18th Aug) | 3ft (0.9m) 16s |
| Most Powerful | 12AM (Fri 21st Aug) | 4.5ft (1.4m) 12s |
Table - best surf conditions forecast for The Tree over the next 16 days.
The Lowdown
G’day, it’s Rusty here. Let’s cut straight to it. The next couple of weeks at The Tree are a bit of a mixed bag, but there’s a serious window of juice coming up if you’re patient. Right now, the water’s sitting at 87°, which is much warmer than normal for this time of year – you won’t need much more than board shorts and a rashie.
For the first stretch, from Tuesday the 18th through to the 24th, it’s pretty small and unremarkable. We’re looking at waves in the 2ft to 3ft range, with the occasional ankle-snapper up to 4ft on Friday morning the 21st. The energy is weak to moderate, with readings mostly between 200 and 480. The problem is the wind – we get some glassy starts, like Wednesday morning and Friday morning, but the afternoons keep getting chopped up by cross-onshore breezes and stormy conditions. The Tree is exposed, and it takes a beating when the wind turns on it. There’s nothing here that’s going to have you calling in sick for work.
Now, after a bit of a lull, the real story starts building around Thursday the 27th. The swell starts to pick up, but it’s short-period stuff – only 7 seconds – so it’s a bit lumpy. Still, with calm winds and glassy conditions in the morning, it’s ridable. You’re looking at around 4ft with moderate energy (258). But hold on, because the standouts are on Saturday the 29th and Sunday the 30th.
Saturday the 29th is the one to circle. The swell jumps to 4ft to 5ft, from the SW with a 16-second period. That’s a proper groundswell, and the combined energy readings are screaming – 1172 in the morning and 1098 in the afternoon. That’s strong to very strong energy, the kind that gets your heart rate up. The wind is glassy all day, and this is excellent surf for experienced surfers. This is your best bet, no question. It’s not a beginner wave at this size, but if you know what you’re doing, this is the session. The long period means it’ll hold its shape well at The Tree.
Sunday the 30th is still very good – 5ft in the morning, dropping to 4ft later, with energy in the 900s. Also glassy early on, though the afternoon gets a little cross-shore. Monday the 31st keeps the run going with 4ft and clean conditions, but the energy drops back to the 700s. It’s still fun, but the peak has passed.
After that, into the first week of September, we start to fade again. The first couple of days of September have some clean mornings but the swell backs off to under 3ft. Tuesday the 1st has some small glassy waves, but it’s nothing special. By Wednesday the 2nd, we’re back to long-period but tiny – only 2ft. It’s a fizzle, not a finish.
So, the call is simple: if you can only paddle out once, make it Saturday the 29th. The Tree is an advanced break, fairly consistent, and it can get crowded, so get out there early. It’s a rare and inconsistent spot, so when it lines up like this, you don’t miss it.
Rusty.
Short Range ForecastModerate rain (total 15mm), heaviest on Thu night. Warm (max 28°C on Tue morning, min 26°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 23mm), heaviest during Sun afternoon. Warm (max 29°C on Fri afternoon, min 26°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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) | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SSW 9 | SSW 10 | SSW 12 | SSW 11 | SSW 11 | S 11 | S 10 | S 10 | S 10 | SSW 14 | SW 18 | SW 18 | SW 18 | SW 17 | SW 16 |
Wave Graph | |||||||||||||||||||||
171 | 151 | 406 | 255 | 251 | 160 | 144 | 163 | 480 | 430 | 337 | 338 | 265 | 200 | 151 | 136 | 162 | 260 | 155 | 243 | 216 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | glassy | glassy | glassy | cross-off | cross-off | cross | glassy | glassy | on | glassy | glassy | on | glassy | glassy | cross-on | cross-off | glassy | cross-on | cross-off |
High Tide | 6:50PM2.38m | 7:10AM2.53m | 7:35PM2.20m | 7:55AM2.36m | 8:25PM2.04m | 8:46AM2.21m | 9:26PM1.91m | 9:48AM2.11m | 10:37PM1.86m | 10:57AM2.09m | 11:49PM1.91m | 12:02PM2.14m | 00:49AM2.02m | ||||||||
Low Tide | 12:46PM0.40m | 00:54AM0.50m | 1:31PM0.54m | 1:38AM0.67m | 2:21PM0.69m | 2:27AM0.83m | 3:19PM0.80m | 3:26AM0.94m | 4:26PM0.85m | 4:36AM0.99m | 5:35PM0.82m | 5:46AM0.96m | 6:34PM0.74m | ||||||||
5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | |
— | 5:53 | — | — | 5:53 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:51 | — | |
mm | 3 | 2 | 3 | — | — | — | — | 1 | 6 | — | 1 | 1 | 2 | 4 | 3 | — | 8 | 4 | — | 9 | 8 |
Temp °C | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 27 | 27 | 28 | 29 | 28 | 29 | 29 | 28 | 29 | 29 | 28 | 29 | 29 | 28 |
Feels °C | 31 | 32 | 32 | 32 | 32 | 32 | 33 | 31 | 31 | 31 | 33 | 34 | 33 | 32 | 33 | 33 | 33 | 32 | 33 | 33 | 33 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 8 | S 8 | S 9 | SSW 9 | SSW 9 | SSW 9 | SSW 10 | SSW 12 | SSW 11 | SSW 11 | S 11 | S 10 | S 10 | S 10 | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 |
127 | 117 | 121 | 96 | 126 | 132 | 141 | 163 | 480 | 430 | 337 | 338 | 265 | 200 | 151 | 136 | 110 | 81 | 80 | 80 | 76 | |
Swell 2 Height (m) Direction Period (s) | SW 13 | SW 13 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SSW 13 | SW 19 | SW 17 | S 12 | SW 16 | SW 16 | SW 15 | SW 14 | SSW 14 | SW 18 | SW 18 | SW 18 | SW 17 | SW 16 |
171 | 138 | 406 | 255 | 251 | 160 | 144 | 114 | 14 | 47 | 66 | 129 | 62 | 107 | 93 | 129 | 162 | 260 | 155 | 243 | 216 | |
Swell 3 Height (m) Direction Period (s) | SW 16 | SW 16 | S 12 | SW 6 | W 14 | S 15 | S 13 | S 11 | SW 13 | W 13 | SW 15 | SW 22 | SW 21 | SW 20 | SW 20 | SW 19 | SW 13 | SW 13 | SW 12 | SW 12 | SSW 12 |
163 | 151 | 11 | 9 | 4 | 4 | 13 | 41 | 7 | 3 | 35 | 18 | 18 | 60 | 60 | 133 | 87 | 84 | 75 | 37 | 28 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | WSW 6 | — | — | — | — | WNW 6 | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | 6 | — | — | — | — | 3 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 4 | 31 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 155 | 0 | 0 | 136 | 0 | 0 | 44 | 0 | 0 | 4 | 0 |
Best forecast wave conditions in Golfo de Nicoya | |||||||||||||||||||||
Best forecast wave conditions in Costa Rica | |||||||||||||||||||||
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Information about the The Tree Surf forecast
The above surf forecast table for The Tree provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at The Tree can be found by selecting the local surf guide option on the grey menu. Our The Tree 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 (The Tree) 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 The Tree 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.
Are you planning a holiday in Golfo de Nicoya? If you are looking for accommodation near The Tree, camping, hotels and holiday cottages in Golfo de Nicoya, consider staying in Tejar which is 45 km (28 miles) away. Other places in and around Golfo de Nicoya where you can find information about places to rent, and car hire include San Rafael Abajo which is 45 km (28 miles) away, Esparza, Chacarita and Quepos.











