Surf Forecasts:
The Tree surf forecast from 21 Aug 2026:
- Best quality surf: Friday 21 Aug, 6AM (local time) - 4.5ft (1.4m), 11s period, SSW swell with offshore winds.
- Most powerful swell: Friday 21 Aug, 6AM (local time) - 4.5ft (1.4m), 11s period, SSW swell with 455 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 12AM (local time) - 4.5ft (1.3m), 12s period with SSW 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 Friday (Aug 21) at 12AM. The primary swell is predicted to be 1.3m and 12s period with a secondary swell of 0.3m and 14s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at The Tree in the next 16 days are 1.4m 11s and forecast to arrive on Friday (Aug 21) at 6AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 2s period and expected on Wednesday (Aug 26) at 3AM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Fri 21st Aug) | 4.5ft (1.3m) 12s |
| Best Surf | 6AM (Fri 21st Aug) | 4.5ft (1.4m) 11s |
| Most Powerful | 6AM (Fri 21st Aug) | 4.5ft (1.4m) 11s |
Table - best surf conditions forecast for The Tree over the next 16 days.
The Lowdown
Alright, this is Rusty, and I’ve got the goods on The Tree for the next couple of weeks.
Right now, it’s a bit of a slow start. We’re looking at Thursday afternoon with a small 3ft SSW swell and a cross-on wind, so honestly, it’s pretty poor. The water is sitting at a warm 86.5°, which is a touch warmer than normal for this time of year.
The real action starts to build on Friday morning, the 21st. That’s our first genuine standout. We’ve got a 4ft SSW groundswell, with a solid 11-second period, and the wind is glassy from the NNW. The combined energy is up there at 465 (moderate), and conditions will be clean. This is the pick of the first week – smooth, lined up, and without the afternoon storm chop.
Saturday the 22nd morning is another good one, with a slightly smaller 3.3ft S swell, still glassy, but the energy drops a bit to 279. Still fun though.
The real heavyweight shows up on Saturday the 29th of August. By morning, we’re looking at a 4ft SW swell with a 16-second period – that’s proper groundswell energy. The combined energy hits 969 (strong), and we’ve got clean, cross-off winds from the ESE. The Tree is exposed to SW swells, so this will focus nicely. This is the long-range standout, but it’s still a week and a half out, so keep an eye on it.
Then on Sunday the 30th, it stays solid. A 4.6ft SW swell with 15 seconds and 925 energy (strong) in the morning, again with clean cross-off winds. Even the afternoon holds at 4.3ft with glassy conditions. This whole stretch from the 29th into early September looks promising, with moderate to strong energy and mostly clean windows.
By Friday the 4th of September, we get a big push. The morning brings a 5ft SW swell, 17-second period, and a massive 1430 combined energy (very strong), with clean cross-off winds. This is excellent for experienced surfers, but at 5ft at a break like The Tree, beginners might find it a handful.
A heads up: The Tree is an advanced spot that’s fairly consistent, but crowds are sometimes an issue. The long-period swells (over 15 seconds) will wrap in nicely here, but they can make beach breaks close out – The Tree handles it better.
If there are gaps, the first few days are weak, but from the 21st onward, there’s generally something to surf, with a few flat afternoons due to the incoming afternoon storms.
Stay stoked.
Short Range ForecastHeavy rain (total 29mm), heaviest during Thu afternoon. Warm (max 29°C on Thu afternoon, min 26°C on Thu afternoon). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 31mm), heaviest during Tue afternoon. Warm (max 29°C on Sun afternoon, min 26°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Thu 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 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) | 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 | SW 16 | SW 16 | SW 16 | SW 15 | SSW 7 | SSW 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 154 | 415 | 370 | 343 | 338 | 214 | 158 | 151 | 136 | 208 | 260 | 155 | 243 | 216 | 129 | 127 | 118 | 110 | 139 | 158 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | off | glassy | cross-on | glassy | glassy | cross-on | cross | glassy | cross-on | glassy | glassy | cross-on | cross-off | glassy | on | glassy | glassy | on | cross-off |
High Tide | 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 | 12:57PM2.24m | 1:36AM2.18m | 1:43PM2.35m | 2:16AM2.34m | |||||||
Low Tide | 2:27AM0.83m | 3:19PM0.80m | 3:26AM0.94m | 4:26PM0.85m | 4:36AM0.99m | 5:35PM0.82m | 5:46AM0.96m | 6:34PM0.74m | 6:46AM0.87m | 7:22PM0.62m | 7:35AM0.75m | 8:02PM0.50m | ||||||||
 |  |  | |  | | | | | | | | | |  | | | | | | |
 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — |
 | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:51 | — | — | 5:51 | — | — | 5:50 | — |
mm | 13 | 1 | — | 5 | — | — | 6 | 3 | 1 | 5 | 1 | 1 | 7 | 1 | — | 12 | 4 | — | 4 | 12 |
Temp °C | 29 | 27 | 29 | 29 | 27 | 29 | 29 | 28 | 29 | 29 | 27 | 28 | 28 | 27 | 28 | 28 | 27 | 28 | 28 | 27 |
Feels °C | 33 | 31 | 32 | 32 | 31 | 33 | 32 | 32 | 33 | 33 | 30 | 33 | 31 | 31 | 33 | 31 | 32 | 31 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | 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 | S 9 | S 9 | S 7 | S 7 | SSW 7 | SSW 7 |
| kJ | 154 | 415 | 370 | 343 | 338 | 214 | 158 | 151 | 136 | 139 | 136 | 106 | 103 | 76 | 53 | 52 | 45 | 56 | 139 | 158 |
Swell 2 Height (m) Direction Period (s) | SSW 13 | SW 14 | SW 17 | S 12 | SW 16 | SW 16 | SW 15 | SW 14 | SSW 14 | SW 18 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 |
| kJ | 114 | 30 | 47 | 66 | 129 | 62 | 107 | 93 | 129 | 208 | 260 | 155 | 243 | 216 | 129 | 127 | 118 | 110 | 57 | 54 |
Swell 3 Height (m) Direction Period (s) | S 11 | SW 19 | SW 18 | SW 15 | SW 22 | WSW 6 | SW 20 | SW 20 | SW 19 | SW 13 | SW 13 | SW 12 | SW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SSW 19 |
| kJ | 41 | 14 | 48 | 35 | 18 | 3 | 60 | 60 | 133 | 87 | 84 | 74 | 37 | 28 | 28 | 13 | 12 | 12 | 11 | 35 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 155 | 0 | 0 | 71 | 0 | 0 | 155 | 4 | 0 | 39 | 0 | 0 | 39 | 0 | 0 | 149 | 0 | 0 | 40 | 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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