Surf Forecasts:
The Tree surf forecast from 13 Sep 2026:
- Best quality surf: Wednesday 16 Sep, 9AM (local time) - 3ft (0.9m), 16s period, SW swell with glassy winds.
- Most powerful swell: Wednesday 16 Sep, 9AM (local time) - 3ft (0.9m), 16s period, SW swell with 371 kJ wave energy.
- Next surfable swell (1★+): Saturday 12 Sep, 9PM (local time) - 2.5ft (0.7m), 14s 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 Saturday (Sep 12) at 9PM. The primary swell is predicted to be 0.7m and 14s period with a secondary swell of 0.7m and 9s. 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 0.9m 16s and forecast to arrive on Wednesday (Sep 16) at 9AM. 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 (Sat 12th Sep) | 2.5ft (0.7m) 14s |
| Best Surf | 9AM (Wed 16th Sep) | 3ft (0.9m) 16s |
| Most Powerful | 9AM (Wed 16th Sep) | 3ft (0.9m) 16s |
Table - best surf conditions forecast for The Tree over the next 16 days.
The Lowdown
Alright folks, Rusty here, with a look at what's on the table for The Tree over the next couple of weeks.
Right off the bat, the first few days are a bit of a washout. There’s some small swell around, but the wind and conditions are just not cooperating for a decent paddle. We're looking at a slow start with marginal surf through Saturday and Sunday (12th and 13th of September).
The first real glimmer of hope comes Monday morning, the 14th. The wind goes glassy, and while the swell is small at 1 ft from the SW, it’s clean and rideable for the experienced crew. The water temp is sitting at 86°, which is a touch warmer than normal for this time of year. This pattern of glassy mornings holds through Tuesday the 15th, with the swell bumping up to 2 ft and the wave energy feeling moderate (428). It’s not pumping, but it’s clean.
Now, Wednesday the 16th is where it starts to get interesting. Wednesday morning looks like the first true standout. We’ve got glassy conditions, a clean 3 ft SW swell, and the wave energy is up there (518). This is very good surf for The Tree. The wind stays light and offshore through Thursday morning the 17th, with a solid 3 ft SW groundswell (14-second period) making for some clean lines (409 energy). That longer period will mean more push between sets, making the paddle out a bit easier.
We hit a bit of a lull again over the next weekend, with the wind turning onshore and the quality dropping right off. But then, hold onto your boards, because the real magic is building.
The next standout lands on Sunday the 20th of September. Glassy, clean, and a solid 3 ft SW groundswell with a long 19-second period. The wave energy is cranking at 571 – you’ll feel the push. This is top-tier for The Tree. Monday the 21st morning is also a beauty with a clean 3 ft SW and the energy still high at 554. Tuesday the 22nd afternoon and Wednesday the 23rd morning keep this run of quality going with glassy or clean conditions and consistent 3 ft SW swell.
The very end of the forecast window gets a bit mushy, with shorter periods creeping in and wind issues.
But if you’re after the absolute best, mark your calendar for Sunday the 27th of September. The morning is looking epic: glassy offshore, a solid 7 ft groundswell from the W with an 11-second period, and the energy is massive at 1335. This is expert territory – too big for the beginners, but for the crew who knows The Tree, this will be firing. The wind stays clean, the swell is lined up, and it’s going to be a proper session.
So, to sum it up: The first week is a slow burn with a few clean windows. The second week, especially from the 20th onward, gets really good. And that last Sunday, the 27th, is the one you don’t want to miss.
Stay stoked, and I'll see you in the water.
Rusty
Short Range ForecastHeavy rain (total 21mm), heaviest during Sun afternoon. Warm (max 29°C on Sat afternoon, min 27°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 21mm), heaviest during Wed night. Warm (max 29°C on Tue afternoon, min 26°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Sat 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | ||||||||||||||
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 14 | SW 13 | SW 13 | SW 13 | SW 19 | SW 19 | SW 18 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 14 | SW 14 | SW 14 | SW 14 | SW 20 | SW 20 | SW 19 |
Wave Graph  | ||||||||||||||||||||
 kJ | 245 | 176 | 140 | 131 | 234 | 127 | 192 | 252 | 192 | 358 | 310 | 371 | 291 | 251 | 248 | 297 | 238 | 145 | 138 | 184 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | cross | on | off | glassy | glassy | glassy | glassy | cross-on | glassy | glassy | cross-on | glassy | cross-off | cross-on | glassy | glassy | on | glassy |
High Tide | 3:36PM2.77m | 3:56AM2.93m | 4:17PM2.74m | 4:34AM2.89m | 4:56PM2.65m | 5:12AM2.79m | 5:35PM2.52m | 5:50AM2.64m | 6:15PM2.37m | 6:29AM2.47m | 6:56PM2.20m | 7:12AM2.31m | 7:44PM2.04m | |||||||
Low Tide | 9:42PM0.12m | 10:10AM0.11m | 10:22PM0.17m | 10:50AM0.15m | 11:00PM0.26m | 11:29AM0.24m | 11:38PM0.39m | 12:08PM0.37m | 00:17AM0.54m | 12:50PM0.52m | 00:58AM0.70m | 1:36PM0.68m | 1:46AM0.86m | |||||||
 |  |  | | | | |  | | | | | | | | | |  | | | |
 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:26 | — | — |
 | 5:39 | — | — | 5:39 | — | — | 5:38 | — | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — |
mm | 3 | 4 | — | 5 | 4 | — | 2 | 1 | 2 | 3 | 7 | — | 3 | 4 | — | 2 | 2 | — | 6 | 29 |
Temp °C | 29 | 28 | 29 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 27 | 28 | 28 | 27 | 29 | 29 | 28 | 28 | 28 | 27 |
Feels °C | 32 | 32 | 33 | 32 | 33 | 33 | 32 | 33 | 32 | 32 | 31 | 32 | 31 | 32 | 32 | 32 | 33 | 33 | 31 | 32 |
Swell 1 Height (m) Direction Period (s) | SW 14 | S 9 | S 9 | S 9 | S 9 | S 8 | S 8 | S 8 | S 8 | S 8 | S 9 | SW 16 | SW 16 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 |
| kJ | 245 | 76 | 99 | 99 | 73 | 92 | 92 | 88 | 108 | 111 | 95 | 371 | 291 | 251 | 248 | 297 | 238 | 138 | 138 | 138 |
Swell 2 Height (m) Direction Period (s) | S 8 | SW 13 | SW 13 | SW 13 | SW 19 | SW 12 | SW 18 | SW 18 | SW 18 | SW 17 | SW 16 | S 9 | S 8 | S 8 | S 9 | S 9 | S 8 | S 8 | S 9 | S 9 |
| kJ | 64 | 176 | 140 | 108 | 234 | 73 | 192 | 252 | 192 | 358 | 310 | 96 | 90 | 68 | 83 | 76 | 71 | 71 | 55 | 57 |
Swell 3 Height (m) Direction Period (s) | SW 18 | SSW 18 | SW 21 | SW 19 | SW 13 | SW 19 | SW 12 | SW 12 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | S 10 | SW 22 | SW 22 | SW 21 | SW 20 | SW 20 | SW 19 |
| kJ | 80 | 30 | 70 | 131 | 104 | 127 | 52 | 49 | 128 | 109 | 79 | 51 | 50 | 18 | 78 | 118 | 160 | 145 | 136 | 184 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 158 | 0 | 1 | 23 | 0 | 0 | 0 | 0 | 0 | 71 | 0 | 0 | 50 | 0 | 0 | 71 | 0 | 0 | 71 | 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.
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