Surf Forecasts:
Langosta surf forecast from 17 Aug 2026:
- Best quality surf: Monday 17 Aug, 6PM (local time) - 3.5ft (1.1m), 14s period, SW swell with glassy winds.
- Most powerful swell: Tuesday 18 Aug, 9PM (local time) - 3.5ft (1.1m), 16s period, SW swell with 539 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 12PM (local time) - 3.5ft (1.1m), 14s period with SW swell.
Best Forecast Surf Conditions for Langosta this week:
The surf forecast for Langosta over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 17) at 12PM. The primary swell is predicted to be 1.1m and 14s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Langosta in the next 16 days are 1.1m 16s and forecast to arrive on Tuesday (Aug 18) at 9PM. 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 11s period and expected on Friday (Aug 21) at 6AM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Mon 17th Aug) | 3.5ft (1.1m) 14s |
| Best Surf | 6PM (Mon 17th Aug) | 3.5ft (1.1m) 14s |
| Most Powerful | 9PM (Tue 18th Aug) | 3.5ft (1.1m) 16s |
Table - best surf conditions forecast for Langosta over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it.
We’ve got a bit of a slow start this week, but there’s some good stuff brewing for the patient ones. The overall pattern is a steady, long-period swell out of the southwest that’s gonna keep things ticking over, but you gotta pick your moments with the wind.
Langosta is the only game in town, and it’s a consistent spot – a mix of beach, reef, and rivermouth that’s good for beginners. The water temp is about average for this time of year, nothing weird going on.
The first real call is Monday morning, August 17th. We’ve got a clean 3.6 ft swell from the southwest with a solid 14-second period. The energy is moderate (428), and with a light cross-offshore breeze, it’s going to be clean. That afternoon looks even better, turning glassy with a bit more energy (500). That’s a sweet window.
Tuesday the 18th is a write-off – messy wind and marginal conditions. Wednesday the 19th morning cleans up with a 3.0 ft swell and a proper offshore wind. The period bumps to 15 seconds, which is a long-period groundswell. That’s great for shape and energy, but at a beach/rivermouth setup, it might break a bit straight. Still, it’s clean.
There’s a gap of poor conditions from Thursday the 20th through to Saturday the 22nd, with dropping swell and onshore crud. Sunday the 23rd afternoon shows a glimmer with a 2.0 ft, 18-second swell and offshore wind, but it’s small.
Now, for the true standouts, you gotta look ahead. Saturday, August 29th is a ripper. The morning brings a solid 4.3 ft southwest swell, 17-second period, and the energy is strong (1017). That’s a *lot* of power. The wind is light offshore, so it’ll be clean. That’s for experienced surfers – over 5 ft, it’s getting punchy for the beginners.
Sunday, August 30th morning is almost identical: 4.6 ft, 16 seconds, strong energy (1065), and a clean cross-offshore breeze. Another cracker for those who know what they’re doing.
Then Monday, August 31st morning keeps the run going with a very clean 3.9 ft, 14-second swell and glassy offshore wind. Energy is still solid (629). A great option for the advanced crew.
The tail end, Tuesday, September 1st morning, is a glassy 3.3 ft swell with a 13-second period. Clean and fun. The best of the bunch is the Saturday the 29th and Sunday the 30th mornings – a proper long-period groundswell with strong energy and clean wind. Expect crowds here, as it’s a consistent spot that’s often busy.
Short Range ForecastModerate rain (total 11mm), heaviest on Tue afternoon. Warm (max 31°C on Mon morning, min 25°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Sat afternoon. Warm (max 32°C on Sat morning, min 26°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
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 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 20 | SW 19 | SW 18 | SW 18 |
Wave Graph | |||||||||||||||||||||
428 | 500 | 410 | 428 | 395 | 539 | 355 | 350 | 238 | 183 | 140 | 83 | 76 | 54 | 102 | 95 | 158 | 97 | 184 | 260 | 327 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | off | cross-off | cross-off | off | cross-off | cross | off | off | on | off | cross-off | on | off | off | cross-on | cross-off | cross-off | cross-off | off |
High Tide | 6:00PM2.29m | 6:22AM2.44m | 6:44PM2.14m | 7:05AM2.29m | 7:29PM1.98m | 7:50AM2.14m | 8:19PM1.83m | 8:42AM2.01m | 9:18PM1.72m | 9:42AM1.92m | 10:27PM1.68m | 10:48AM1.90m | 11:37PM1.71m | ||||||||
Low Tide | 11:57AM0.25m | 00:06AM0.29m | 12:41PM0.36m | 00:48AM0.44m | 1:26PM0.49m | 1:32AM0.59m | 2:16PM0.61m | 2:20AM0.72m | 3:14PM0.71m | 3:18AM0.82m | 4:20PM0.75m | 4:26AM0.86m | 5:27PM0.73m | ||||||||
5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | 5:33 | — | — | |
— | 6:00 | — | — | 6:00 | — | — | 5:59 | — | — | 5:59 | — | — | 5:58 | — | — | 5:58 | — | — | 5:57 | — | |
mm | — | 1 | 3 | 1 | 4 | — | — | 2 | — | — | — | — | — | 1 | — | — | 4 | — | — | 3 | — |
Temp °C | 31 | 31 | 27 | 31 | 30 | 26 | 29 | 29 | 27 | 30 | 28 | 28 | 30 | 29 | 28 | 32 | 29 | 27 | 33 | 31 | 27 |
Feels °C | 34 | 33 | 30 | 31 | 30 | 27 | 32 | 32 | 30 | 34 | 30 | 32 | 32 | 32 | 32 | 35 | 32 | 30 | 35 | 35 | 29 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 16 | SW 15 | SW 14 | S 8 | S 8 | S 8 | S 11 | S 11 | S 11 | S 11 | S 11 | S 10 | S 10 | S 9 | S 9 | S 9 |
428 | 500 | 410 | 428 | 395 | 539 | 355 | 350 | 111 | 111 | 144 | 281 | 345 | 351 | 291 | 223 | 198 | 154 | 109 | 106 | 109 | |
Swell 2 Height (m) Direction Period (s) | S 7 | S 8 | S 7 | S 8 | S 8 | S 8 | S 8 | S 8 | SW 14 | SW 13 | SW 13 | SW 13 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | SSW 13 | SW 18 | SW 18 |
106 | 111 | 88 | 95 | 100 | 95 | 103 | 88 | 238 | 183 | 140 | 83 | 76 | 54 | 102 | 95 | 158 | 84 | 116 | 260 | 327 | |
Swell 3 Height (m) Direction Period (s) | S 11 | S 11 | NNW 4 | N 4 | S 13 | S 12 | N 5 | N 5 | NW 8 | N 5 | S 12 | SSW 19 | SW 12 | SW 12 | SW 17 | SW 21 | SW 20 | SW 20 | SW 19 | SW 13 | SW 12 |
20 | 20 | 5 | 3 | 3 | 3 | 11 | 7 | 3 | 4 | 28 | 36 | 36 | 36 | 74 | 68 | 98 | 97 | 184 | 84 | 75 | |
Wind waves Height (m) Direction Period (s) | — | NNW 7 | — | — | N 4 | N 5 | — | — | NNE 5 | — | — | N 5 | — | — | — | NNE 4 | NNW 4 | N 4 | NNE 4 | N 4 | NNE 4 |
— | 5 | — | — | 3 | 11 | — | — | 4 | — | — | 2 | — | — | — | 3 | 1 | 9 | 11 | 10 | 11 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 4 | 0 | 19 | 5 | 0 | 0 | 5 | 0 | 0 | 4 | 0 | 0 | 4 | 0 | 0 | 4 | 0 | 14 | 0 | 0 |
Best forecast wave conditions in Guanacaste | |||||||||||||||||||||
Best forecast wave conditions in Costa Rica | |||||||||||||||||||||
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Information about the Langosta Surf forecast
The above surf forecast table for Langosta provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Langosta can be found by selecting the local surf guide option on the grey menu. Our Langosta 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 (Langosta) 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 Langosta 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.
Langosta 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.











