
Surf Forecasts:
The Tree surf forecast from 9 Aug 2026:
- Best quality surf: Friday 14 Aug, 6PM (local time) - 3ft (0.9m), 18s period, SW swell with glassy winds.
- Most powerful swell: Saturday 15 Aug, 6AM (local time) - 4.5ft (1.3m), 16s period, SW swell with 920 kJ wave energy.
- Next surfable swell (1★+): Sunday 9 Aug, 9PM (local time) - 3ft (0.9m), 13s 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 Sunday (Aug 09) at 9PM. The primary swell is predicted to be 0.9m and 13s period with a secondary swell of 0.5m and 10s. 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 1.3m 16s and forecast to arrive on Saturday (Aug 15) at 6AM. Winds are predicted to be offshore at the time the swell arrives.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Sun 9th Aug) | 3ft (0.9m) 13s |
| Best Surf | 6PM (Fri 14th Aug) | 3ft (0.9m) 18s |
| Most Powerful | 6AM (Sat 15th Aug) | 4.5ft (1.3m) 16s |
Table - best surf conditions forecast for The Tree over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s coming our way.
The pattern for the next couple of weeks is built around a consistent, long-period SW groundswell, but it’s not gonna be all-time. The standout period is from the morning of Friday the 14th right through to the morning of Tuesday the 18th, with a real peak on the morning of Saturday the 15th. That’s when things get meaty. Before that, we’ve got small, clean waves but nothing to get too worked up about.
The Tree is the only spot on the menu, an exposed break that handles this SW swell well. Water temp is sitting around 86°, which is a touch warmer than normal for this time of year, so you might be able to get away with a shorty or just boardshorts.
Let’s break it down. Starting Sunday morning, the 9th of August, we’ve got glassy conditions with a 3ft SSW swell at 14 seconds. The combined energy is moderate (327). It’s small, but clean. The afternoons get choppy with a cross-on wind, so the mornings are the go.
Monday the 10th and Tuesday the 11th are more of the same: tiny, glassy mornings with 2ft to 2ft SW swell, period around 13-14 seconds, energy moderate (232-346). Clean, but small. Afternoons on Tuesday get a bit of a spike with a 2ft swell at 18 seconds, but the cross-on wind spoils it.
Wednesday the 12th and Thursday the 13th are similar – glassy mornings with 2ft SW groundswell (15-16 seconds, energy 341-370). The afternoons are messy with risk of t-storms and cross-on wind.
Now, here’s the good stuff. Friday the 14th, the morning wakes up with a 3ft SW swell at 18 seconds, clean offshore wind, and the energy jumps to 712 – strong. This is where it starts to get interesting. The swell is still long-period, so it’ll be a bit more lined up at this point break, and the sets will have some push.
Saturday the 15th is the highlight. The morning sees a 4ft SW swell at 16 seconds, glassy offshore wind, and the energy is a solid 1086 – strong. This is excellent for experienced surfers. The swell is getting up there, so it’s not for beginners, but for the crew who know what they’re doing, this is the best session of the outlook. The afternoon stays clean too, with a glassy offshore wind, 4ft swell, and energy at 980. This is a full day of quality.
Sunday the 16th hangs in there with a 4ft SW swell (15 seconds, energy 686) and clean, cross-off wind in the morning, going glassy in the afternoon. Good waves.
The energy drops back from Monday the 17th onward, with smaller swells and more mixed conditions. Mornings are still okay, but the consistency fades. There’s a brief spike on the morning of Tuesday the 18th with a 5ft SSW swell, but the period drops to 8 seconds – that’s weak, short-period windswell, so it won’t have the shape of the groundswell earlier. Not the same quality.
After that, it’s a run of smaller, cleaner mornings but nothing to race out for, right through to the end of the period on Monday the 24th of August. The last real standout of the whole run is the morning of Sunday the 23rd, with a 3ft SW swell at a very long 19 seconds (energy 616) and glassy conditions. That’s a promising long-range call, but it’s a long way out.
The best on offer: The morning of Saturday, 15th of August. 4ft of SW groundswell, 16 seconds, glassy wind, strong energy. That’s the one to circle. The Friday morning before it and the Sunday after are also very good.
Crowds are possible here, so get there early for the peak.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Sun night. Warm (max 30°C on Sun afternoon, min 26°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 14mm), heaviest on Wed night. Warm (max 29°C on Wed morning, min 26°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | |||||||||||||||
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) | SSW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SSW 15 | SW 14 | SW 18 | SW 13 | SW 16 | SW 16 | SW 16 | SW 15 | SW 18 | SW 19 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 |
Wave Graph | |||||||||||||||||||||
264 | 293 | 175 | 136 | 212 | 150 | 203 | 319 | 144 | 211 | 206 | 155 | 137 | 111 | 369 | 623 | 686 | 851 | 909 | 803 | 773 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross-off | glassy | cross-on | glassy | glassy | cross-on | off | glassy | on | glassy | glassy | cross-on | glassy | glassy | cross-on | cross-off | glassy | glassy | glassy |
High Tide | 11:05AM2.48m | 11:54PM2.22m | 12:16PM2.56m | 1:02AM2.39m | 1:20PM2.67m | 2:00AM2.59m | 2:17PM2.77m | 2:52AM2.77m | 3:08PM2.84m | 3:40AM2.89m | 3:56PM2.86m | 4:24AM2.95m | 4:41PM2.81m | ||||||||
Low Tide | 5:40PM0.49m | 5:56AM0.61m | 6:46PM0.36m | 7:05AM0.49m | 7:44PM0.21m | 8:05AM0.35m | 8:36PM0.09m | 8:59AM0.22m | 9:23PM0.01m | 9:48AM0.15m | 10:08PM0.00m | 10:35AM0.13m | 10:51PM0.06m | ||||||||
5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | |
— | 5:58 | — | — | 5:57 | — | — | 5:57 | — | — | 5:57 | — | — | 5:55 | — | — | 5:55 | — | — | 5:55 | — | |
mm | — | — | 1 | — | — | — | — | 2 | 1 | — | 4 | 7 | — | 1 | 1 | — | 1 | — | — | 5 | 6 |
Temp °C | 29 | 30 | 28 | 29 | 30 | 28 | 29 | 30 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 29 | 29 | 28 | 29 | 28 | 27 |
Feels °C | 32 | 32 | 33 | 31 | 33 | 32 | 33 | 33 | 34 | 32 | 33 | 34 | 33 | 32 | 33 | 32 | 32 | 32 | 33 | 33 | 32 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SSW 12 | SW 14 | SW 14 | SW 13 | S 9 | S 8 | S 8 | S 8 | S 8 | S 8 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 |
264 | 293 | 175 | 136 | 212 | 101 | 203 | 241 | 144 | 53 | 68 | 78 | 76 | 76 | 78 | 623 | 686 | 851 | 909 | 803 | 773 | |
Swell 2 Height (m) Direction Period (s) | S 8 | S 10 | S 10 | S 10 | S 9 | SSW 15 | S 9 | SW 18 | S 9 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 19 | S 7 | S 12 | S 12 | S 12 | S 12 | SSW 11 |
33 | 45 | 30 | 29 | 41 | 150 | 55 | 319 | 56 | 211 | 206 | 155 | 137 | 102 | 369 | 52 | 216 | 180 | 177 | 177 | 217 | |
Swell 3 Height (m) Direction Period (s) | SW 11 | SSW 18 | SW 16 | SW 16 | SW 20 | S 9 | SW 19 | S 9 | SW 18 | SW 13 | SW 13 | S 15 | S 13 | SW 18 | SW 16 | S 11 | SW 14 | — | — | — | SSW 12 |
30 | 30 | 93 | 66 | 62 | 39 | 88 | 53 | 109 | 106 | 82 | 110 | 128 | 111 | 159 | 37 | 169 | — | — | — | 46 | |
Wind waves Height (m) Direction Period (s) | — | — | — | W 5 | SW 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 40 | 0 | 0 | 136 | 0 | 0 | 155 | 0 | 0 | 180 | 0 | 0 | 71 | 0 | 0 | 31 | 0 | 0 | 0 | 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.











