
Surf Forecasts:
Tamarindo surf forecast from 10 Aug 2026:
- Best quality surf: Friday 14 Aug, 6PM (local time) - 3.5ft (1.1m), 18s period, SW swell with cross-offshore winds.
- Most powerful swell: Saturday 15 Aug, 3AM (local time) - 5ft (1.5m), 16s period, SW swell with 1,151 kJ wave energy.
- Next surfable swell (1★+): Monday 10 Aug, 3PM (local time) - 3ft (0.9m), 14s period with SW swell.
Best Forecast Surf Conditions for Tamarindo this week:
The surf forecast for Tamarindo over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 10) at 3PM. The primary swell is predicted to be 0.9m and 14s period with a secondary swell of 0.5m and 5s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Tamarindo in the next 16 days are 1.5m 16s and forecast to arrive on Saturday (Aug 15) at 3AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 8s period and expected on Monday (Aug 17) at 12PM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Mon 10th Aug) | 3ft (0.9m) 14s |
| Best Surf | 6PM (Fri 14th Aug) | 3.5ft (1.1m) 18s |
| Most Powerful | 3AM (Sat 15th Aug) | 5ft (1.5m) 16s |
Table - best surf conditions forecast for Tamarindo over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s have a look at the next couple of weeks for the coast. It’s going to be a tale of two halves, so strap in.
We kick things off with a bit of a waiting game. The start of the period is pretty gutless, with small, weak swell and ordinary conditions. Monday the 10th has some cross-off wind but the surf is just dribbling in at 2.6ft. Not worth getting wet for, honestly. Tuesday the 11th is more of the same – small and a bit messy, especially in the afternoon when the wind swings onshore. The first real glimmer shows up on Wednesday the 12th morning, with a clean 2ft, but it’s still tiny.
The waiting pays off on Friday the 14th. The morning is still a bit ordinary, but the afternoon brings a proper pulse. Swell jumps to 3.6ft from the SW with a solid 18-second period, the wind goes light offshore, and the combined energy jumps right up (1028). This is the first real standout. Tamarindo will be clean and lined up, and while it’s not huge, the quality will be there. This is the one to aim for if you can get out.
Saturday the 15th is the big one. The morning sees the swell peak at 4.9ft with a 16-second period and a solid offshore breeze (ENE 25 km/h). The energy is cranking (1112) – this is the best of the bunch. It’ll be bigger and pushier, so it’s not for the groms, but for anyone with a bit of experience, this is going to be firing. The afternoon backs off a touch to 4.3ft but stays clean. This is your weekend winner.
After that, the swell hangs in there but loses a bit of its punch. Sunday the 16th is smaller and the wind gets a bit messy. Monday the 17th and Tuesday the 18th see a return to clean, head-high-plus waves (3.6ft) with good offshore wind in the mornings. It’s not as powerful as the Saturday peak, but it’s still fun and consistent. The water temp is about average for this time of year, so no worries there.
The second week is a bit more of a mixed bag. From Wednesday the 19th through Friday the 21st, the swell drops back to 3ft and then 2ft, with wind and storms making things messy at times. Thursday the 20th afternoon is a write-off with onshore wind. There’s a brief, glassy moment on Friday afternoon the 21st, but it’s tiny.
Then, just when you think it’s done, there’s a late kicker. Sunday the 23rd morning sees a new, longer-period SW swell (19 seconds) at 3ft and clean, with the energy jumping up (936). It’s a nice finish to the window. Monday the 24th holds similar promise with 3ft and clean conditions. These late days are promising, but being that far out, you gotta take them with a grain of salt.
So, the pick of the fortnight is Saturday the 15th – biggest, cleanest, and most powerful. Friday the 14th afternoon is a close second for pure quality. The late window around the 23rd and 24th is worth keeping an eye on, but it’s a long range call.
That’s it from me. Stay salty.
Short Range ForecastLight rain (total 3mm), mostly falling on Wed afternoon. Warm (max 33°C on Mon afternoon, min 25°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Fri afternoon. Warm (max 32°C on Thu morning, min 25°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | |||||||||||||||
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) | SW 13 | SW 14 | SSW 20 | SW 14 | SW 18 | SW 13 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 20 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 |
Wave Graph | |||||||||||||||||||||
202 | 331 | 253 | 218 | 375 | 212 | 211 | 206 | 181 | 176 | 255 | 373 | 804 | 777 | 1050 | 1109 | 897 | 942 | 677 | 606 | 598 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | off | cross-on | cross-off | off | cross-on | off | cross-off | cross-off | off | cross-off | cross | cross-off | cross-off | cross-off | off | glassy | glassy | off |
High Tide | 12:07PM2.32m | 00:50AM2.13m | 1:10PM2.41m | 1:49AM2.30m | 2:07PM2.50m | 2:42AM2.47m | 2:59PM2.55m | 3:30AM2.59m | 3:47PM2.56m | 4:16AM2.64m | 4:33PM2.52m | 4:59AM2.63m | 5:17PM2.42m | ||||||||
Low Tide | 6:37PM0.33m | 6:54AM0.42m | 7:35PM0.20m | 7:54AM0.30m | 8:27PM0.09m | 8:49AM0.20m | 9:15PM0.02m | 9:40AM0.14m | 10:00PM0.01m | 10:27AM0.13m | 10:43PM0.06m | 11:13AM0.16m | 11:25PM0.15m | ||||||||
5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | |
— | 6:02 | — | — | 6:02 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:00 | — | — | 6:00 | — | |
mm | — | — | — | — | — | — | — | 3 | — | — | — | — | — | 2 | — | — | 2 | — | 4 | 10 | 14 |
Temp °C | 32 | 33 | 27 | 32 | 29 | 28 | 32 | 30 | 27 | 32 | 31 | 28 | 32 | 30 | 27 | 32 | 30 | 27 | 28 | 27 | 24 |
Feels °C | 31 | 32 | 27 | 36 | 32 | 33 | 36 | 33 | 29 | 34 | 34 | 29 | 35 | 33 | 28 | 33 | 32 | 30 | 33 | 32 | 26 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 14 | SW 15 | SW 14 | SW 14 | SW 13 | SW 16 | SW 16 | S 8 | S 8 | SW 15 | SW 16 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 |
202 | 331 | 171 | 218 | 308 | 212 | 211 | 206 | 63 | 72 | 255 | 248 | 804 | 777 | 1050 | 1109 | 897 | 942 | 677 | 606 | 598 | |
Swell 2 Height (m) Direction Period (s) | SW 16 | S 9 | SW 12 | S 9 | SW 18 | S 9 | SW 13 | S 8 | SW 15 | SW 15 | S 8 | S 8 | S 11 | S 11 | S 12 | S 12 | S 12 | S 12 | S 7 | S 7 | SSW 7 |
125 | 28 | 87 | 37 | 375 | 57 | 166 | 69 | 181 | 176 | 55 | 60 | 206 | 160 | 178 | 136 | 134 | 132 | 79 | 103 | 105 | |
Swell 3 Height (m) Direction Period (s) | S 10 | SW 20 | SSW 20 | SW 18 | S 8 | SW 18 | S 9 | SW 13 | SW 12 | S 14 | SW 21 | SW 20 | SW 11 | SW 14 | — | SW 10 | N 5 | N 5 | S 11 | S 11 | S 11 |
30 | 99 | 253 | 157 | 50 | 152 | 79 | 128 | 71 | 92 | 111 | 373 | 18 | 251 | — | 4 | 7 | 7 | 59 | 38 | 37 | |
Wind waves Height (m) Direction Period (s) | NNE 5 | N 5 | NNE 5 | — | — | — | N 5 | — | NNE 4 | NNE 4 | N 4 | NNE 4 | NNE 6 | N 5 | NE 4 | NNE 5 | — | — | — | — | — |
13 | 12 | 9 | — | — | — | 4 | — | 4 | 6 | 6 | 6 | 10 | 10 | 14 | 22 | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 27 | 0 | 0 | 15 | 57 | 0 | 0 | 8 | 0 | 0 | 8 | 0 | 2 | 0 | 12 | 0 | 0 | 0 | 8 | 16 |
Best forecast wave conditions in Guanacaste | |||||||||||||||||||||
Best forecast wave conditions in Costa Rica | |||||||||||||||||||||
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Information about the Tamarindo Surf forecast
The above surf forecast table for Tamarindo provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Tamarindo can be found by selecting the local surf guide option on the grey menu. Our Tamarindo 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 (Tamarindo) 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 Tamarindo 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.
Tamarindo is 46 km (29 miles) from Nicoya. If you plan a holiday in Guanacaste, look for hotels and other accommodation in Nicoya. Nicoya has rooms for a wide range of budgets as well as car hire and transport links.











