Surf Forecasts:
The Tree surf forecast from 13 Aug 2026:
- Best quality surf: Friday 14 Aug, 6PM (local time) - 3ft (0.9m), 18s period, SW swell with glassy winds.
- Most powerful swell: Friday 14 Aug, 9PM (local time) - 4.5ft (1.3m), 18s period, SW swell with 973 kJ wave energy.
- Next surfable swell (1★+): Thursday 13 Aug, 12AM (local time) - 2ft (0.6m), 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 Thursday (Aug 13) at 12AM. The primary swell is predicted to be 0.6m and 16s period with a secondary swell of 0.8m and 8s. 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 1.3m 18s and forecast to arrive on Friday (Aug 14) at 9PM. 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+) | 12AM (Thu 13th Aug) | 2ft (0.6m) 16s |
| Best Surf | 6PM (Fri 14th Aug) | 3ft (0.9m) 18s |
| Most Powerful | 9PM (Fri 14th Aug) | 4.5ft (1.3m) 18s |
Table - best surf conditions forecast for The Tree over the next 16 days.
The Lowdown
Alright, let’s get straight into it. The big picture for The Tree over this stretch is pretty simple: a classic summer run of southwest groundswell pulses, mostly small to maybe a touch above average, but groomed by plenty of clean, light mornings. It’s not going to be a week of giant barrels, but there’s going to be some proper, rideable surf if you pick your moments. The water’s running a touch warmer than normal for this time of year, about 86°, which is a welcome little bonus for the first session we talk about.
The first real window is Thursday morning, the 13th. We’ve got a 2ft swell from the southwest with a long 15-second period, and it’s clean with a light cross-offshore breeze. It’s not big, but it’s lined up and the energy is there (326). Friday the 14th is where things start to get interesting. The morning is the standout early call: a little bump in size to 3ft, still southwest, period out to 18 seconds, and it’s glassy – absolutely no wind. The energy jumps right up to 837 (moderate), and the surf is going to be clean and well-shaped. This is your pick of the first few days.
Saturday the 15th morning is arguably the best of the whole run. We’ve got 4ft of southwest swell, 16-second period, and it’s completely glassy again. This is solidly in the moderate energy range at 1046, and the waves are going to have some push to them. It’s an excellent morning for experienced surfers on this exposed, fairly consistent break. Crowds are only a sometimes thing, so you might get a few other folks out, but it shouldn’t be a zoo. After that, Sunday the 16th keeps the quality going with 4ft glassy conditions through the morning and into the afternoon, with energy sitting around 761-758.
The surf dips a little on Monday and Tuesday, dropping back to 2ft – 3ft, but there are still clean windows. Tuesday morning the 18th has a clean 2ft from the southwest, and Wednesday morning the 19th looks glassy again with 3ft on offer. It’s still worth a paddle, just not the same level. The long-period southwest swells are great for a spot like this, an exposed reef/point setup that’s going to hold the lines better than a beach break would.
Then we’ve got a bit of a lull. From around the 20th through the 26th, the swell drops off. There are some smaller days – 2ft, 1ft – and a shift in direction to the south with shorter periods around 9-10 seconds. Not great. You’ll get some glassy, rideable mornings on the 21st and the 23rd, but they’re really just insubstantial leftovers. This is the low point of the run, and it last for about a week. It’s not a complete blank, but it’s nothing to get excited about.
The signal for the very end of the window, on Thursday the 27th, shows a little pulse back in the southwest swell, 3ft – 3ft with a 17-second period. But the wind is looking cross to cross-on and a bit stronger, so the quality is going to be compromised. It’s a tentative, promising sign for the following week, but for now it’s a wait-and-see.
So, to keep it simple: Friday and Saturday mornings are your standouts. If you can only get out once, make it Saturday morning the 15th for the size and the glass. Friday is a close second for the quality and the longer period. The rest is a case of picking the clean windows and keeping your expectations in check. The Tree is fairly consistent, so it’ll come around again.
Stay stoked.
Rusty
Short Range ForecastModerate rain (total 15mm), heaviest on Wed afternoon. Warm (max 30°C on Wed afternoon, min 26°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 38mm), heaviest during Sat night. Warm (max 29°C on Sat afternoon, min 24°C on Mon morning). Wind will be generally light. | |||||||||||||||||||
Wed 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 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 16 | SW 16 | SW 15 | SW 18 | SW 19 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 16 | SW 16 | SW 16 |
Wave Graph | ||||||||||||||||||||
206 | 155 | 137 | 111 | 369 | 623 | 686 | 951 | 909 | 803 | 763 | 535 | 528 | 466 | 371 | 371 | 313 | 163 | 151 | 406 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | off | cross-off | on | cross-off | glassy | cross-on | cross-off | glassy | cross-on | glassy | glassy | glassy | glassy | glassy | cross-off | off | cross-off | cross-on | glassy |
High Tide | 2:52AM2.77m | 3:08PM2.84m | 3:40AM2.89m | 3:56PM2.86m | 4:24AM2.95m | 4:41PM2.81m | 5:06AM2.93m | 5:24PM2.70m | 5:48AM2.84m | 6:07PM2.56m | 6:28AM2.70m | 6:50PM2.38m | ||||||||
Low Tide | 8:36PM0.09m | 8:59AM0.22m | 9:23PM0.01m | 9:48AM0.15m | 10:08PM0.00m | 10:35AM0.13m | 10:51PM0.06m | 11:20AM0.17m | 11:32PM0.17m | 12:03PM0.27m | 00:13AM0.32m | 12:46PM0.40m | 00:54AM0.50m | |||||||
— | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | |
5:57 | — | — | 5:55 | — | — | 5:55 | — | — | 5:55 | — | — | 5:54 | — | — | 5:54 | — | — | 5:53 | — | |
mm | 5 | 5 | — | 2 | — | — | 2 | 1 | — | 7 | 17 | — | — | 5 | 7 | — | — | 2 | 7 | 2 |
Temp °C | 30 | 29 | 29 | 29 | 28 | 29 | 29 | 28 | 29 | 29 | 25 | 26 | 27 | 27 | 25 | 26 | 26 | 28 | 28 | 27 |
Feels °C | 33 | 33 | 32 | 32 | 33 | 32 | 32 | 33 | 32 | 33 | 29 | 30 | 32 | 31 | 29 | 28 | 28 | 31 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | S 9 | S 8 | S 8 | S 7 | S 8 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SSW 7 | SW 14 | SSW 7 | S 7 | SSW 8 |
55 | 80 | 93 | 70 | 61 | 623 | 686 | 951 | 909 | 803 | 763 | 535 | 528 | 466 | 371 | 118 | 313 | 67 | 112 | 155 | |
Swell 2 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 15 | SW 14 | SW 19 | S 11 | S 12 | S 12 | S 12 | S 12 | S 11 | SSW 11 | S 11 | S 11 | SSW 7 | SW 14 | SSW 7 | SW 13 | SW 13 | SW 16 |
206 | 155 | 137 | 102 | 369 | 209 | 216 | 180 | 137 | 137 | 166 | 202 | 191 | 188 | 77 | 371 | 77 | 140 | 138 | 406 | |
Swell 3 Height (m) Direction Period (s) | SW 13 | S 15 | S 14 | SW 18 | SW 16 | SW 11 | SW 14 | — | — | — | — | SSW 11 | SSW 11 | SW 19 | S 11 | S 10 | S 10 | SW 16 | SW 16 | W 9 |
82 | 110 | 96 | 111 | 159 | 5 | 206 | — | — | — | — | 24 | 39 | 15 | 35 | 18 | 17 | 163 | 151 | 2 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 4 | 0 | 0 | 155 | 0 | 0 | 158 | 0 | 0 | 23 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 4 | 0 |
Best forecast wave conditions in Golfo de Nicoya | ||||||||||||||||||||
Best forecast wave conditions in Costa Rica | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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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.











