
Surf Forecasts:
El Estero surf forecast from 7 Sep 2026:
- Best quality surf: Monday 7 Sep, 6AM (local time) - 3.5ft (1.1m), 14s 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★+): Monday 7 Sep, 6AM (local time) - 3.5ft (1.1m), 14s 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 Monday (Sep 07) at 6AM. The primary swell is predicted to be 1.1m and 14s period. 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 0.8m 8s period and expected on Monday (Sep 14) at 6AM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Mon 7th Sep) | 3.5ft (1.1m) 14s |
| Best Surf | 6AM (Mon 7th Sep) | 3.5ft (1.1m) 14s |
| 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 look at what El Estero is shaping up to deliver over the next couple of weeks.
Right off the bat, we’ve got a decent run of surf lined up. The pattern is a consistent pulse of south-west groundswell, and it’s that longer period stuff – anything from 13 seconds right up to 19 seconds – so you’re looking at proper, lined-up waves with good energy. The combined swell energy is moderate to strong, peaking well into the three-figure range, so there’s plenty of push.
Monday, September 7th kicks things off. The morning is the call with some cloud cover and a light cross-off breeze out of the NE at 3 mph. That’s giving us clean conditions on 4 ft of SW swell with a 14-second period. The wave energy is moderate (550). It’s a solid start, nothing too crazy, but clean and surfable. The afternoons are a write-off for the first several days with onshore breezes and storm risks, so make it a dawn patrol.
Tuesday, September 8th morning is a standout. We’ve got gentle offshore wind from the east at 9 mph, which is going to groom the 2 ft SW swell (18-second period) into clean lines. The energy is up there at 625. That’s a quality window for a river break like this – the long period will run nicely.
Wednesday, September 9th morning looks excellent again. Clear skies, moderate offshore breeze from the ENE at 12 mph, cleaning up 3 ft of SW swell (16 seconds). The energy is solid at 532. This is definitely one of the best morning sessions of the run – clean, offshore, and fun-sized.
Thursday, September 10th is another highlight. The morning sees 4 ft of SW swell (17 seconds) with a light cross-off breeze from the ENE, and the combined energy jumps to a strong 1124. That’s proper power. The afternoon holds clean, too, with a light cross-off from the south. Thursday is a top contender for the best days of the whole forecast.
We roll into the second week, and the pattern holds well. The mornings from Friday, September 12th through to Sunday, September 14th stay clean with lighter winds and waist-high swell from the south-west. Be aware of the afternoons – they get chopped up by cross-shore breezes. The crowds are listed as “often” at El Estero, so expect a few locals in the water for these quality morning windows.
Into the deeper forecast, Monday, September 15th morning is a special one. That’s a glassy session with next to no wind, just a slight air, and 2 ft of long-period SW swell at 19 seconds. It’ll be clean as a whistle, but small and very long period, so it might be a bit tricky at the river mouth unless it hits a good bank. Still, total energy is a solid 247 for the size.
The end of the run from Saturday, September 20th through to Monday, September 22nd brings another pulse of 3 ft to 3 ft SW swell (18 to 16 seconds) with clean, offshore or glassy mornings. Tuesday, September 22nd morning has zero wind and glassy conditions with 3 ft of swell – that is about as perfect as a small-wave river mouth can look.
So, the best on offer? Thursday, September 10th morning takes the cake – strong energy (1124), 4 ft swell, 17-second period, and clean cross-off wind. Right behind it, Wednesday, September 9th morning with the offshore breeze and solid energy is a cracker. Get on those early windows, and you’ll be smiling.
Rusty.
Short Range ForecastModerate rain (total 17mm), heaviest on Sun night. Warm (max 32°C on Wed morning, min 25°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Thu afternoon. Warm (max 32°C on Thu morning, min 25°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | ||||||||||||||
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 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 | |||||||||||||||||||
658 | 507 | 410 | 342 | 312 | 224 | 302 | 299 | 437 | 871 | 1074 | 823 | 897 | 701 | 623 | 459 | 398 | 341 | 215 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | on | glassy | off | cross-on | glassy | off | cross | off | cross-off | cross-off | off | cross-off | cross | off | cross-off | cross-on | off |
High Tide | 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 | 4:26AM0.63m | 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 | — | — | |
— | — | 5:49 | — | — | 5:47 | — | — | 5:46 | — | — | 5:46 | — | — | 5:45 | — | — | 5:45 | — | |
mm | 8 | — | 2 | — | — | 3 | — | — | 4 | — | — | 1 | — | — | 1 | — | — | — | — |
Temp °C | 26 | 30 | 29 | 27 | 31 | 29 | 28 | 32 | 31 | 27 | 32 | 30 | 27 | 31 | 29 | 27 | 30 | 29 | 28 |
Feels °C | 30 | 32 | 32 | 31 | 35 | 31 | 33 | 35 | 35 | 28 | 34 | 33 | 28 | 34 | 32 | 30 | 31 | 31 | 32 |
Swell 1 Height (m) Direction Period (s) | 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 |
658 | 507 | 410 | 342 | 245 | 199 | 302 | 299 | 437 | 871 | 1074 | 823 | 897 | 701 | 623 | 459 | 398 | 341 | 215 | |
Swell 2 Height (m) Direction Period (s) | SSW 7 | SW 7 | WSW 6 | WNW 11 | SW 18 | SW 17 | SW 12 | SSW 12 | SW 12 | WNW 10 | SSE 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 9 | S 9 |
84 | 43 | 26 | 70 | 312 | 224 | 154 | 161 | 120 | 34 | 43 | 49 | 70 | 71 | 69 | 65 | 66 | 60 | 55 | |
Swell 3 Height (m) Direction Period (s) | WNW 10 | S 7 | S 6 | SW 18 | WNW 11 | WNW 11 | W 11 | WNW 10 | W 10 | S 11 | SSE 10 | WNW 10 | NW 10 | NW 10 | N 4 | WNW 10 | N 5 | N 4 | NNE 4 |
19 | 31 | 30 | 155 | 68 | 66 | 57 | 72 | 54 | 37 | 62 | 20 | 50 | 34 | 6 | 18 | 13 | 6 | 6 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | SW 6 | — | — | S 7 | NNE 4 | NW 10 | — | — | NNW 10 | — | NNE 4 | — | — | — |
— | — | — | — | — | 9 | — | — | 16 | 6 | 50 | — | — | 38 | — | 6 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 10 | 0 | 0 | 58 | 0 | 0 | 10 | 0 | 10 | 0 | 0 | 0 | 55 | 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.










