
Surf Forecasts:
El Estero surf forecast from 10 Sep 2026:
- Best quality surf: Thursday 10 Sep, 12PM (local time) - 4.5ft (1.3m), 17s period, SW swell with glassy 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★+): Wednesday 9 Sep, 9PM (local time) - 4ft (1.2m), 17s period with SW swell.
Best Forecast Surf Conditions for El Estero this week:
The surf forecast for El Estero over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 09) at 9PM. The primary swell is predicted to be 1.2m and 17s period with a secondary swell of 0.4m and 10s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at El Estero in the next 16 days are 1.3m 17s and forecast to arrive on Thursday (Sep 10) at 9AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 8s period and expected on Monday (Sep 14) at 9PM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Wed 9th Sep) | 4ft (1.2m) 17s |
| Best Surf | 12PM (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 El Estero over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a long look at what’s on the cards for El Estero this forecast period.
Right off the bat, we’ve got some decent action lined up. The water’s sitting at a warm 86°, which is a touch warmer than normal for this time of year – you’ll be comfortable in a spring suit or less.
Wednesday afternoon kicks things off with a clean 3ft SW groundswell. The period is a long 16 seconds, so there’s real deep water energy in the water. The wind is light and offshore from the E, which is exactly what this river mouth needs to hold good shape. With a combined energy of 564 (moderate), the sets will have some push without being too much. This is a standout session for the first week.
Thursday morning sees the swell bump up to 4ft from the SW with a 17-second period. The combined energy jumps to a strong 1163, so there’s plenty of water moving around. Wind is ENE, a light cross-off, keeping it clean. This is a top pick for a morning paddle.
Friday stays solid – morning has 4ft SW with a 16-second period and cross-off NE wind. The afternoon holds similar size with a light cross-off SSE breeze. Both windows are clean and excellent.
Saturday morning drops back a little to 3ft SW, 14 seconds, still clean and offshore. The energy is lower at 355 (moderate), but it’s still a fun, manageable wave.
From Sunday morning through Tuesday morning, the size dips into the 2ft to 3ft range. The good news is that most mornings stay clean with light cross-off ENE winds. Not big, but rideable for a log or a fish. The Thursday morning the 18th is a standout for the second week – tiny 3ft swell, but the wind is dead calm. Glassy conditions at a river mouth is rare magic. The period is 13 seconds, so there’s some shape in the water.
Then comes a solid pulse around Sunday the 20th and Monday the 21st. Sunday morning hits 3ft SW with a 19-second period and a combined energy of 946 (strong). Wind is a light cross-off from the SSE – clean, lined-up waves. Monday morning has 3ft SW, 18-second period, energy at 833 (strong), and a slight air. That’s another top session if you can wait it out.
Crowds here are often a factor at El Estero, so don’t expect solitude. But with a consistent, long-period SW groundswell and mostly favorable wind mornings, the quality is worth sharing the water for. The river mouth setup handles these long-period swells well, giving you better shaped waves and longer gaps between sets that make paddling back out easier.
The rest of the mornings are a mix of smaller, cleaner waves or choppy afternoons. Avoid the afternoons unless you like wind-affected surf.
All in all, the best windows are Wednesday afternoon, Thursday morning, Friday, Thursday morning the 18th (glassy), and the Sunday and Monday mornings of the 20th and 21st.
Rusty.
Short Range ForecastSome drizzle, heaviest during Thu afternoon. Warm (max 33°C on Wed afternoon, min 26°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 19mm), heaviest on Sun afternoon. Warm (max 30°C on Sun morning, min 25°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Wed 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | ||||||||||||||
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 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 19 | SW 19 | SW 18 | SW 18 | SW 15 | SW 17 | SW 16 |
Wave Graph | ||||||||||||||||||||
437 | 871 | 1074 | 823 | 897 | 701 | 623 | 459 | 346 | 341 | 215 | 171 | 138 | 299 | 171 | 246 | 460 | 266 | 587 | 508 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | cross-on | off | cross-off | cross-off | off | cross-off | cross-on | off | cross-off | cross-on | cross-off | cross-off | on | off | cross-off | cross-on | off |
High Tide | 1:35AM2.37m | 1:55PM2.40m | 2:23AM2.51m | 2:43PM2.46m | 3:07AM2.61m | 3:27PM2.48m | 3:48AM2.64m | 4:09PM2.44m | 4:27AM2.60m | 4:49PM2.37m | 5:06AM2.52m | 5:29PM2.26m | ||||||||
Low Tide | 7:19PM0.27m | 7:46AM0.30m | 8:08PM0.18m | 8:36AM0.19m | 8:53PM0.12m | 9:21AM0.12m | 9:34PM0.11m | 10:03AM0.10m | 10:14PM0.15m | 10:44AM0.14m | 10:53PM0.23m | 11:23AM0.22m | 11:31PM0.34m | |||||||
— | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | |
5:46 | — | — | 5:46 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:44 | — | — | 5:44 | — | |
mm | — | — | — | 1 | — | — | — | — | — | 3 | 3 | 1 | 5 | — | — | 3 | 4 | — | 4 | 5 |
Temp °C | 33 | 28 | 32 | 29 | 28 | 33 | 31 | 29 | 32 | 29 | 28 | 30 | 29 | 26 | 30 | 29 | 27 | 30 | 29 | 26 |
Feels °C | 34 | 28 | 36 | 30 | 30 | 34 | 34 | 32 | 34 | 32 | 32 | 33 | 31 | 28 | 33 | 32 | 30 | 33 | 32 | 30 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | S 9 | S 9 | S 8 | S 8 | S 8 | S 8 | S 8 | SW 17 | SW 16 |
437 | 871 | 1074 | 823 | 897 | 701 | 623 | 459 | 346 | 341 | 215 | 99 | 99 | 91 | 88 | 86 | 108 | 103 | 587 | 508 | |
Swell 2 Height (m) Direction Period (s) | SW 12 | S 11 | SSE 10 | S 10 | S 7 | S 7 | S 7 | S 7 | S 8 | S 8 | S 9 | SW 13 | SW 13 | SW 13 | SW 19 | SW 18 | SW 18 | SW 15 | S 8 | S 8 |
120 | 37 | 63 | 49 | 52 | 46 | 61 | 51 | 58 | 66 | 76 | 171 | 138 | 134 | 171 | 246 | 460 | 266 | 84 | 86 | |
Swell 3 Height (m) Direction Period (s) | NNE 5 | WNW 10 | WNW 10 | N 5 | NW 10 | WNW 10 | N 4 | WNW 10 | WNW 10 | SW 18 | N 4 | SW 18 | SW 16 | SW 19 | SW 12 | SW 12 | SW 12 | SW 18 | SW 13 | SW 12 |
7 | 34 | 20 | 7 | 35 | 19 | 6 | 19 | 9 | 80 | 3 | 51 | 68 | 299 | 73 | 72 | 69 | 252 | 109 | 95 | |
Wind waves Height (m) Direction Period (s) | SSE 7 | NNE 3 | NNW 10 | — | — | N 5 | — | NNE 4 | NNE 4 | — | — | NNE 4 | — | — | NNE 4 | — | N 5 | — | — | — |
17 | 4 | 69 | — | — | 13 | — | 6 | 4 | — | — | 3 | — | — | 4 | — | 11 | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 10 | 10 | 0 | 0 | 0 | 0 | 0 | 10 | 0 | 0 | 10 | 0 | 0 | 10 | 0 | 0 | 10 | 0 |
Best forecast wave conditions in Guanacaste | ||||||||||||||||||||
Best forecast wave conditions in Costa Rica | ||||||||||||||||||||
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Information about the El Estero Surf forecast
The above surf forecast table for El Estero provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at El Estero can be found by selecting the local surf guide option on the grey menu. Our El Estero 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 (El Estero) 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 El Estero 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.
El Estero is 47 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.










