Surf Forecasts:
Tamarindo surf forecast from 6 Sep 2026:
- Best quality surf: Thursday 10 Sep, 9AM (local time) - 4.5ft (1.3m), 17s period, SW swell with offshore winds.
- Most powerful swell: Thursday 10 Sep, 9AM (local time) - 4.5ft (1.3m), 17s period, SW swell with 1,074 kJ wave energy.
- Next surfable swell (1★+): Sunday 6 Sep, 9PM (local time) - 4.5ft (1.3m), 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 Sunday (Sep 06) at 9PM. The primary swell is predicted to be 1.3m and 14s period with a secondary swell of 1.0m and 7s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Tamarindo in the next 16 days are 1.3m 17s and forecast to arrive on Thursday (Sep 10) at 9AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 7s period and expected on Monday (Sep 07) at 3AM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Sun 6th Sep) | 4.5ft (1.3m) 14s |
| Best Surf | 9AM (Thu 10th Sep) | 4.5ft (1.3m) 17s |
| Most Powerful | 9AM (Thu 10th Sep) | 4.5ft (1.3m) 17s |
Table - best surf conditions forecast for Tamarindo over the next 16 days.
The Lowdown
Alright, let's break this down in feet and knots.
We’ve got a decent run of surf coming up for Tamarindo, but it’s not all going to be perfect. The water temp is 86°, so a touch warmer than usual for this time of year.
First chance to get wet is this Sunday morning the 6th of September. It’s glassy with light easterly breezes, and the swell is a clean 5ft from the southwest with a 14-second period. Wave energy is solid. That’s your best early call for a beginner-friendly wave at the river mouth. Expect some company though, it’s a popular spot.
Monday morning the 7th stays clean with cross-offshore winds. Swell drops a bit to 4ft, but still plenty of energy and the period holds at 14 seconds. Fun small-wave day.
Tuesday morning the 8th sees the swell drop to 2ft but with a long 18-second period and offshore winds. Clean conditions make the most of that long-period groundswell.
Thursday morning the 10th is the big standout. Swell comes back up to 4ft from the southwest with a 17-second period, and a moderate offshore wind. The wave energy jumps to a strong reading – this is the best power of the whole run. This is a wave for experienced surfers; it’s got size and punch. Best session of the two weeks right here.
Friday the 11th is still clean in the morning with 4ft swell and cross-offshore winds. A solid day.
The second week gets smaller. Saturday the 12th and Sunday the 13th have clean morning windows but swell drops to 3ft and 2ft. Still rideable, but you’ll be working for it.
Tuesday the 15th morning is glassy with a 3ft, 18-second period swell. That’s a nice, long-period groundswell that should run well on the sandbars.
Wednesday the 16th morning is clean and cross-offshore with 4ft swell, and the afternoon turns glassy. A nice two-session day.
The final weekend, Saturday the 19th and Sunday the 20th, offers glassy mornings with small but long-period swell (2ft, with periods of 20 and 19 seconds). Clean surface makes them fun for a log.
The standout is Thursday the 10th – that 4ft, 17-second, offshore-energized swell is the pick of the bunch. Stick to mornings for the cleanest conditions. Afternoons get windy and choppy with a risk of thunderstorms.
Rusty.
Short Range ForecastHeavy rain (total 21mm), heaviest during Mon afternoon. Warm (max 32°C on Tue morning, min 25°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Wed afternoon. Warm (max 33°C on Wed morning, min 25°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | |||||||||||||||
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 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 18 | SW 13 | SW 16 | SW 16 | SW 16 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 833 | 833 | 658 | 507 | 410 | 342 | 312 | 224 | 302 | 299 | 437 | 871 | 1074 | 823 | 897 | 701 | 550 | 459 | 346 | 341 | 215 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | glassy | cross-off | on | glassy | cross-off | cross | off | off | off | off | off | cross-on | off | cross-off | cross | off | cross-off | cross | off |
High Tide | 9:31AM2.16m | 10:19PM1.93m | 10:48AM2.16m | 11:35PM2.03m | 12:00PM2.22m | 00:40AM2.19m | 1:02PM2.31m | 1:35AM2.37m | 1:55PM2.40m | 2:23AM2.51m | 2:43PM2.46m | 3:07AM2.61m | 3:27PM2.48m | ||||||||
Low Tide | 4:06PM0.53m | 4:26AM0.63m | 5:19PM0.48m | 5:43AM0.56m | 6:24PM0.38m | 6:49AM0.44m | 7:19PM0.27m | 7:46AM0.30m | 8:08PM0.18m | 8:36AM0.19m | 8:53PM0.12m | 9:21AM0.12m | 9:34PM0.11m | ||||||||
 | |  | | | |  | |  | | |  | | | | | | | | | | |
 | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — |
 | — | 5:49 | — | — | 5:49 | — | — | 5:47 | — | — | 5:46 | — | — | 5:46 | — | — | 5:45 | — | — | 5:45 | — |
mm | 1 | 5 | 4 | 1 | 6 | 1 | — | 3 | — | — | 2 | — | — | — | — | — | — | — | — | 1 | — |
Temp °C | 29 | 29 | 27 | 29 | 29 | 26 | 32 | 31 | 28 | 33 | 32 | 27 | 32 | 29 | 27 | 32 | 29 | 27 | 30 | 28 | 27 |
Feels °C | 33 | 32 | 31 | 31 | 33 | 30 | 34 | 34 | 32 | 33 | 35 | 26 | 35 | 31 | 29 | 35 | 33 | 29 | 32 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 16 | SW 16 | SW 16 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 |
| kJ | 833 | 833 | 658 | 507 | 410 | 342 | 245 | 199 | 302 | 299 | 437 | 871 | 1074 | 823 | 897 | 701 | 550 | 459 | 346 | 341 | 215 |
Swell 2 Height (m) Direction Period (s) | S 7 | SSW 7 | SSW 7 | SW 7 | SSW 6 | W 11 | SW 18 | SW 17 | SW 12 | SW 12 | SW 12 | WNW 10 | SE 10 | S 10 | S 10 | S 10 | S 10 | SSW 6 | S 10 | S 9 | S 9 |
| kJ | 33 | 67 | 102 | 35 | 51 | 63 | 312 | 224 | 154 | 144 | 120 | 34 | 54 | 49 | 69 | 69 | 71 | 12 | 66 | 61 | 55 |
Swell 3 Height (m) Direction Period (s) | WNW 11 | WNW 10 | WNW 10 | S 6 | SW 19 | SW 18 | WNW 11 | WNW 11 | W 11 | SW 19 | W 10 | S 11 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | SSE 10 | WNW 10 | N 4 | N 5 |
| kJ | 22 | 20 | 19 | 30 | 130 | 155 | 68 | 66 | 57 | 231 | 54 | 37 | 20 | 20 | 20 | 19 | 19 | 31 | 9 | 6 | 11 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | N 4 | SW 6 | — | NNE 5 | — | NNE 5 | NW 10 | — | NNE 5 | NNE 3 | N 4 | NNE 4 | N 4 | — | — |
| kJ | — | — | — | — | — | — | 3 | 12 | — | 5 | — | 13 | 50 | — | 7 | 5 | 18 | 7 | 9 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 8 | 0 | 0 | 8 | 0 | 0 | 18 | 0 | 0 | 0 | 0 | 0 | 57 | 0 | 0 | 8 | 0 | 0 | 8 | 0 |
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.
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