Surf Forecasts:
Jaco Beach surf forecast from 10 Aug 2026:
- Best quality surf: Friday 14 Aug, 6PM (local time) - 3ft (0.9m), 18s period, SW swell with glassy winds.
- Most powerful swell: Saturday 15 Aug, 12AM (local time) - 4.5ft (1.3m), 17s period, SW swell with 951 kJ wave energy.
- Next surfable swell (1★+): Monday 10 Aug, 6AM (local time) - 2.5ft (0.7m), 13s period with SW swell.
Best Forecast Surf Conditions for Jaco Beach this week:
The surf forecast for Jaco Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 10) at 6AM. The primary swell is predicted to be 0.7m and 13s period with a secondary swell of 0.4m and 10s. Another secondary swell of 0.2m and 5s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Jaco Beach in the next 16 days are 1.3m 17s and forecast to arrive on Saturday (Aug 15) at 12AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Mon 10th Aug) | 2.5ft (0.7m) 13s |
| Best Surf | 6PM (Fri 14th Aug) | 3ft (0.9m) 18s |
| Most Powerful | 12AM (Sat 15th Aug) | 4.5ft (1.3m) 17s |
Table - best surf conditions forecast for Jaco Beach over the next 16 days.
The Lowdown
Yo, it’s Rusty. Let’s break down Jaco Beach for the next 16 days. It’s a slow cooker, with small to moderate SW groundswells, but the clean windows are worth the wait. Water temp is running a touch warmer than normal at 86°, so it feels like bathwater.
The first real surf is Tuesday, August 11th, with a glassy morning. Swell is 2ft from the SW at 14 seconds. Energy is moderate at 346. It’s mellow, clean, and good for a log. Wednesday morning, August 12th is similar: 2ft at 16 seconds, dead calm.
The first big standout hits Saturday, August 15th. Morning shows 4ft of SW swell, 16-second period, and glassy conditions. Energy is strong at 1086. This is for the experienced crew; the size starts to push. Monday, August 17th morning also cleans up with 3ft at 14 seconds.
But the true highlight is Friday, August 14th morning. A 3ft SW groundswell with an 18-second period and glassy wind. Energy is 709. That long period will bring beautiful, powerful lines. On a beach break, it might run a bit straight, but with no wind, it’ll be your best chance at something special.
Second week shapes up with more clean mornings. Tuesday, August 18th has 5ft to 5ft of SSW windswell with a short 8-second period, but the morning is clean with cross-off wind. Then the real kicker: Saturday, August 23rd morning, a 3ft SW groundswell with a very long 21-second period and glass. Energy is 671. These long-period, small swells are tricky at a beach, but a glassy morning makes it a gamble worth taking.
Watch out for those afternoons – almost every day sees a cross or onshore breeze from the SSW, plus storms. The mornings are your only window. Crowds are possible on the good mornings. Best swell direction is SSW, which lines up for the end of the forecast. Circle August 14th and 15th on the calendar.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Wed afternoon. Warm (max 30°C on Mon afternoon, min 26°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 28mm), heaviest during Wed night. Warm (max 29°C on Wed night, min 26°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | ||||||||||||||
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 13 | SW 13 | SSW 15 | SW 14 | SW 18 | SW 13 | SW 16 | SW 16 | SW 16 | SW 15 | SW 18 | SW 19 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 |
Wave Graph  | |||||||||||||||||||
 kJ | 175 | 136 | 212 | 150 | 203 | 319 | 144 | 211 | 206 | 155 | 137 | 111 | 369 | 623 | 595 | 951 | 909 | 803 | 773 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | glassy | cross-on | cross-on | glassy | glassy | cross | glassy | glassy | cross-on | glassy | cross-on | cross | cross | cross | cross | glassy |
High Tide | 12:16PM2.56m | 1:02AM2.39m | 1:20PM2.67m | 2:00AM2.59m | 2:17PM2.77m | 2:52AM2.77m | 3:08PM2.84m | 3:40AM2.89m | 3:56PM2.86m | 4:24AM2.95m | 4:41PM2.81m | ||||||||
Low Tide | 5:56AM0.61m | 6:46PM0.36m | 7:05AM0.49m | 7:44PM0.21m | 8:05AM0.35m | 8:36PM0.09m | 8:59AM0.22m | 9:23PM0.01m | 9:48AM0.15m | 10:08PM0.00m | 10:35AM0.13m | 10:51PM0.06m | |||||||
 |  |  |  | |  | | | | | | | | | | | | | | |
 | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — |
 | — | — | 5:58 | — | — | 5:57 | — | — | 5:57 | — | — | 5:55 | — | — | 5:55 | — | — | 5:55 | — |
mm | 1 | — | — | — | — | 1 | — | — | 4 | 12 | — | 2 | 3 | — | 2 | 2 | — | 7 | 21 |
Temp °C | 28 | 29 | 30 | 28 | 29 | 30 | 28 | 29 | 29 | 29 | 29 | 29 | 28 | 29 | 29 | 28 | 29 | 29 | 26 |
Feels °C | 33 | 31 | 32 | 32 | 32 | 33 | 32 | 34 | 32 | 33 | 32 | 32 | 33 | 32 | 33 | 32 | 32 | 32 | 30 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 13 | SW 13 | SSW 12 | SW 14 | SW 14 | SW 13 | S 9 | S 8 | S 8 | S 7 | S 8 | S 8 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 |
| kJ | 175 | 136 | 212 | 101 | 203 | 241 | 144 | 56 | 69 | 76 | 70 | 78 | 74 | 623 | 595 | 951 | 909 | 803 | 773 |
Swell 2 Height (m) Direction Period (s) | S 10 | S 10 | S 9 | SSW 15 | S 9 | SW 18 | S 9 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 19 | S 7 | S 12 | S 12 | S 12 | S 12 | S 12 |
| kJ | 30 | 29 | 41 | 150 | 55 | 319 | 56 | 211 | 206 | 155 | 137 | 102 | 369 | 48 | 216 | 180 | 177 | 177 | 213 |
Swell 3 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 20 | S 9 | SW 19 | S 9 | SW 18 | SW 13 | SW 13 | S 15 | S 14 | SW 18 | SW 16 | S 11 | SW 14 | — | — | — | SSW 12 |
| kJ | 93 | 66 | 62 | 39 | 88 | 53 | 109 | 106 | 82 | 110 | 96 | 111 | 159 | 37 | 206 | — | — | — | 27 |
Wind waves Height (m) Direction Period (s) | W 5 | W 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 1 | 1 | 36 | 0 | 1 | 176 | 0 | 0 | 151 | 0 | 0 | 151 | 0 | 1 | 34 | 1 | 1 | 36 | 0 |
Best forecast wave conditions in Golfo de Nicoya | |||||||||||||||||||
Best forecast wave conditions in Costa Rica | |||||||||||||||||||
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Information about the Jaco Beach Surf forecast
The above surf forecast table for Jaco Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Jaco Beach can be found by selecting the local surf guide option on the grey menu. Our Jaco Beach 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 (Jaco Beach) 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 Jaco Beach 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.
Are you planning a holiday in Golfo de Nicoya? If you are looking for accommodation near Jaco Beach, camping, hotels and holiday cottages in Golfo de Nicoya, consider staying in Esparza which is 43 km (27 miles) away. Other places in and around Golfo de Nicoya where you can find information about places to rent, and car hire include San Rafael Abajo which is 45 km (28 miles) away, Tejar, Chacarita and Puntarenas.
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