
Surf Forecasts:
The Tree surf forecast from 3 Sep 2026:
- Best quality surf: Thursday 3 Sep, 9PM (local time) - 3.5ft (1.1m), 15s period, SW swell with glassy winds.
- Most powerful swell: Friday 4 Sep, 12PM (local time) - 5ft (1.6m), 17s period, SW swell with 1,432 kJ wave energy.
- Next surfable swell (1★+): Thursday 3 Sep, 9PM (local time) - 3.5ft (1.1m), 15s 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 Thursday (Sep 03) at 9PM. The primary swell is predicted to be 1.1m and 15s period with a secondary swell of 0.8m and 18s. 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 1.6m 17s and forecast to arrive on Friday (Sep 04) at 12PM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Thu 3rd Sep) | 3.5ft (1.1m) 15s |
| Best Surf | 9PM (Thu 3rd Sep) | 3.5ft (1.1m) 15s |
| Most Powerful | 12PM (Fri 4th Sep) | 5ft (1.6m) 17s |
Table - best surf conditions forecast for The Tree over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's dig into this forecast for the next couple weeks.
We've got a solid window of surf building and cleaning up through the end of the week, so get your plan together now. The main story is a consistent, long-period SW groundswell, and the highlight without question is Friday and Saturday mornings. Those are the standouts. The Tree is the only break we have data on, so that’s where we’re looking.
We start off Thursday the 3rd. Honestly, Thursday’s not great. The swell is already showing at 2ft from the SW with a very long 16-second period, but the wind is a light cross-shore and the wave energy is just moderate (366). The conditions are marginal and tricky, not worth rushing out for. Thursday afternoon picks up a touch to 3ft with a 19-second period and the energy jumps to 799, but the wind is onshore, so it’s messy. Let’s skip it.
Now, here's where it gets good. Friday morning the 4th is the first real standout. We see clean 4ft SW groundswell, with that long 17-second period, and the combined energy is strongly in the three-digit range (1041). But the real magic is the wind: it's glassy, dead calm. That is going to make it incredibly clean. For an advanced spot like The Tree, this is prime. Crowds can show up here sometimes, so expect company. The water temp anomaly isn't given, so we'll just say it’s what you’d expect for early September.
Saturday morning the 5th is right there with it. The swell is a touch bigger at 5ft from the SW, still a solid 16-second period, and energy is very strong (1342). And again, glassy conditions with the wind off the ENE. This is the other top-tier session. Get on it. By the afternoon both Friday and Saturday, the wind swings onshore and things get cross-choppy, so mornings are the move.
Sunday the 6th is still good, but a notch down. The swell is 4ft from the SW with a 14-second period, and the wind is light WSW, keeping it glassy in the morning. Combined energy is still moderate (714). A fun session, just not the peak.
Monday the 7th sees the swell drop to 3ft and the winds turn light cross-shore again, so that’s marginal. The energy is down to 488. Tuesday the 8th is pretty flat with just 2ft, though a glassy morning makes it look okay for a longboard.
From Wednesday the 9th through to the middle of the following week, the swell stays small, mostly between 2ft and 4ft. There are pockets of glassy mornings, like Wednesday the 9th (3ft, 16-second period), Thursday the 10th (4ft, 17-second period), and Friday the 11th (4ft, 16-second period). The combined energy on the 10th is a solid 903, but nothing with the same punch as that first weekend. It's surfable, but not the standout.
Looking further ahead, around September 17th and 18th, there's a long-range signal. On Thursday the 17th we have a small 2ft swell, but with an incredibly long 24-second period, and the energy is surprisingly strong at 712. The morning is glassy. That’s a very interesting setup for a reef or point, but at a beach break, a period that long can make waves break too straight. Worth keeping an eye on, but it's a long way out so don't bet the farm. Friday the 18th looks similar with 2ft, 21-second period, and energy of 757.
So, in short: Friday the 4th and Saturday the 5th mornings are the clear standouts. After that, it's a waiting game with smaller, cleaner windows through the middle of the month, and a promising but uncertain signal for the 17th and 18th.
Rusty.
Short Range ForecastHeavy rain (total 42mm), heaviest during Thu night. Warm (max 29°C on Thu morning, min 27°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 40mm), heaviest during Sun night. Warm (max 29°C on Tue morning, min 25°C on Sun night). Wind will be generally light. | ||||||||||||||||||
Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | ||||||||||||||
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 19 | SW 18 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 18 | SW 17 | SW 16 |
Wave Graph | |||||||||||||||||||
163 | 248 | 504 | 795 | 951 | 1415 | 1225 | 1317 | 1055 | 788 | 676 | 453 | 447 | 363 | 299 | 249 | 249 | 232 | 306 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross | on | glassy | glassy | cross-on | off | glassy | cross-on | off | glassy | on | on | cross | on | glassy | glassy | on | glassy |
High Tide | 6:35AM2.69m | 7:03PM2.34m | 7:26AM2.57m | 8:00PM2.22m | 8:27AM2.45m | 9:10PM2.14m | 9:39AM2.37m | 10:31PM2.15m | 10:58AM2.38m | 11:47PM2.27m | 12:10PM2.45m | 00:52AM2.46m | |||||||
Low Tide | 00:17AM0.39m | 12:57PM0.38m | 1:06AM0.50m | 1:52PM0.49m | 2:04AM0.62m | 2:58PM0.57m | 3:16AM0.72m | 4:13PM0.60m | 4:37AM0.73m | 5:28PM0.54m | 5:54AM0.64m | 6:33PM0.42m | |||||||
— | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | |
— | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:44 | — | — | 5:43 | — | — | 5:43 | — | |
mm | 4 | — | 9 | 11 | — | 3 | 11 | 1 | 3 | 11 | 1 | 3 | 23 | — | 2 | — | — | — | — |
Temp °C | 28 | 29 | 29 | 28 | 29 | 28 | 28 | 29 | 29 | 28 | 28 | 28 | 26 | 28 | 28 | 28 | 29 | 29 | 28 |
Feels °C | 33 | 32 | 33 | 33 | 32 | 31 | 33 | 32 | 33 | 34 | 32 | 33 | 30 | 31 | 31 | 33 | 33 | 32 | 33 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 16 | SW 19 | SW 18 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 16 |
152 | 248 | 504 | 795 | 951 | 1415 | 1225 | 1317 | 1055 | 788 | 676 | 453 | 447 | 363 | 299 | 249 | 202 | 170 | 306 | |
Swell 2 Height (m) Direction Period (s) | SW 16 | SSW 12 | SSW 12 | SSW 12 | S 8 | SSW 11 | W 8 | W 9 | S 7 | SSW 6 | SSW 6 | SSW 6 | S 6 | S 6 | S 6 | SSW 6 | SW 18 | SW 17 | SW 11 |
163 | 94 | 161 | 93 | 30 | 25 | 12 | 14 | 32 | 33 | 33 | 44 | 39 | 28 | 19 | 18 | 249 | 232 | 64 | |
Swell 3 Height (m) Direction Period (s) | S 6 | S 7 | SW 15 | S 8 | SW 11 | W 8 | S 11 | S 12 | W 9 | W 8 | W 8 | SSW 15 | W 10 | SW 20 | SSW 19 | SSW 18 | S 6 | SSW 6 | SSW 5 |
18 | 24 | 134 | 32 | 60 | 13 | 22 | 11 | 13 | 12 | 5 | 85 | 8 | 97 | 146 | 126 | 16 | 12 | 9 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 1 | 71 | 0 | 0 | 51 | 0 | 0 | 31 | 0 | 0 | 13 | 13 | 4 | 71 | 0 | 0 | 148 | 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.










