Surf Forecasts:
Diria surf forecast from 8 Jul 2026:
- Best quality surf: Wednesday 8 Jul, 12PM (local time) - 4ft (1.2m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Wednesday 8 Jul, 3AM (local time) - 4.5ft (1.4m), 16s period, SW swell with 976 kJ wave energy.
- Next surfable swell (1★+): Wednesday 8 Jul, 12PM (local time) - 4ft (1.2m), 16s period with SW swell.
Best Forecast Surf Conditions for Diria this week:
The surf forecast for Diria over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Jul 08) at 12PM. The primary swell is predicted to be 1.2m and 16s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Diria in the next 16 days are 1.4m 16s and forecast to arrive on Wednesday (Jul 08) at 3AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 7s period and expected on Saturday (Jul 11) at 9AM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Wed 8th Jul) | 4ft (1.2m) 16s |
| Best Surf | 12PM (Wed 8th Jul) | 4ft (1.2m) 16s |
| Most Powerful | 3AM (Wed 8th Jul) | 4.5ft (1.4m) 16s |
Table - best surf conditions forecast for Diria over the next 16 days.
Alright folks, Rusty here. We’ve got one main break to look at for the next couple of weeks, Diria, a reef setup. The water temp is 86°, which is a touch warmer than normal for this time of year, so you might not even need a spring suit.
The opening act kicks off on Tuesday, July 7th, with a solid pulse of long-period groundswell. We’re looking at a 5ft swell from the SSW with an 18-second period. That’s proper groundswell, stacking up a heap of energy (1263). Strong, powerful waves. The wind is a light cross-off from the NE, keeping things clean. This is the standout of the whole forecast. The swell direction is SW, which is a good match for the break’s optimum WNW. The sets will have plenty of punch, and with that period, the paddling out should be manageable between the lulls. This one is for experienced surfers only, as it'll be pushing the limits for most.
Wednesday the 8th drops a touch in size and period, but the highlight is Wednesday afternoon when the wind goes glassy. The swell is 4ft from the SW at 16 seconds, energy at 761. That is going to be silky smooth. A great session for anyone who can handle a reef.
Thursday the 9th still has rideable 4ft SW swell in the morning, but the moderate breeze makes it a bit tricky. The afternoons get a risk of t-storms and a lighter breeze. The swell keeps fading through the week, and from Friday the 10th onward, we’re looking at smaller 3ft to 3ft surf. The quality stays okay with clean conditions for the most part, but it’s not going to blow your mind.
There is a little bump in energy for the morning of Tuesday the 14th and Wednesday the 15th of July, with clean offshore winds and a bit more combo swell energy (473 and 450), but the wave heights are only 2ft to 3ft. A fun little run for small-wave boards.
The second week brings some more 2ft to 3ft days. The morning of Tuesday the 21st of July pops up with a bit more energy (556) and an offshore wind, making for some very clean conditions. But it’s still just a small swell from the SSW at 14 seconds.
Overall, don’t hold out for any more big days after that first Tuesday the 7th. There are no other true standouts. A few of the afternoons turn into onshore slop, especially the 20th and the 22nd of July. For the small and clean days, a longboard or a fish will be your best friend. If you’re after a paddle session, lock in the Tuesday afternoon the 7th, or the glassy Wednesday afternoon the 8th.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Wed afternoon. Warm (max 32°C on Tue afternoon, min 26°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 36mm), heaviest during Sat afternoon. Warm (max 30°C on Fri afternoon, min 24°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Tue 7 | Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SW 18 | SW 17 | SSW 16 | SW 16 | SSW 16 | SW 15 | SSW 16 | SW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SW 14 | SW 14 | SW 13 | SW 14 | SSW 14 | SW 13 | SW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1263 | 1048 | 864 | 748 | 657 | 544 | 419 | 314 | 382 | 279 | 403 | 372 | 362 | 323 | 297 | 264 | 130 | 200 | 127 | 88 | 140 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | glassy | off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | glassy | off | off | cross-on | cross-off | cross-off | cross-off | cross-off | off |
High Tide | 7:43PM1.97m | 8:14AM2.25m | 8:38PM1.92m | 9:08AM2.27m | 9:40PM1.90m | 10:09AM2.30m | 10:48PM1.92m | 11:14AM2.35m | 11:56PM2.00m | 12:19PM2.43m | 1:00AM2.13m | 1:20PM2.52m | 2:00AM2.27m | ||||||||
Low Tide | 1:48AM0.53m | 2:39PM0.58m | 2:40AM0.56m | 3:39PM0.54m | 3:41AM0.56m | 4:44PM0.48m | 4:47AM0.53m | 5:49PM0.38m | 5:55AM0.46m | 6:51PM0.26m | 7:01AM0.37m | 7:48PM0.13m | 8:02AM0.27m | ||||||||
 |  | |  | |  | |  | | | | | |  |  | |  | | | | | |
 | — | — | 5:26 | — | — | 5:26 | — | — | 5:26 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 | — | — | 5:28 |
 | 6:08 | — | — | 6:08 | — | — | 6:08 | — | — | 6:08 | — | — | 6:08 | — | — | 6:08 | — | — | 6:08 | — | 6:08 |
mm | — | — | — | 1 | — | — | 2 | 1 | — | 5 | 4 | 6 | 13 | 5 | — | 3 | — | — | — | — | — |
Temp °C | 32 | 28 | 31 | 31 | 28 | 31 | 31 | 27 | 30 | 30 | 27 | 28 | 28 | 26 | 26 | 26 | 25 | 30 | 31 | 26 | 30 |
Feels °C | 35 | 28 | 33 | 36 | 32 | 32 | 34 | 29 | 33 | 34 | 30 | 33 | 33 | 30 | 30 | 30 | 27 | 30 | 33 | 27 | 31 |
Swell 1 Height (m) Direction Period (s) | SW 18 | SW 17 | SSW 16 | SW 16 | SSW 16 | SW 15 | SSW 16 | SW 15 | SSW 15 | S 8 | SSW 15 | S 7 | SSW 14 | SSW 14 | SW 14 | SW 14 | SSW 7 | SW 14 | S 7 | S 15 | S 14 |
| kJ | 1263 | 1048 | 864 | 748 | 657 | 544 | 419 | 314 | 382 | 82 | 403 | 102 | 362 | 323 | 297 | 264 | 37 | 200 | 34 | 159 | 153 |
Swell 2 Height (m) Direction Period (s) | S 8 | S 12 | S 12 | S 11 | S 11 | S 10 | S 9 | S 9 | S 9 | SSW 15 | S 8 | SSW 15 | S 7 | S 7 | S 6 | S 6 | SW 13 | S 7 | SSW 14 | SW 13 | SW 13 |
| kJ | 51 | 136 | 132 | 110 | 110 | 87 | 85 | 83 | 99 | 279 | 95 | 372 | 79 | 57 | 40 | 41 | 130 | 38 | 127 | 88 | 140 |
Swell 3 Height (m) Direction Period (s) | S 12 | S 8 | — | — | W 15 | — | SSW 15 | SSW 15 | SSW 20 | SSW 18 | SSW 18 | S 16 | SSW 16 | SSW 15 | SSW 14 | SSW 15 | SSW 14 | S 16 | S 16 | S 7 | SW 7 |
| kJ | 73 | 31 | — | — | 4 | — | 47 | 47 | 37 | 108 | 62 | 134 | 86 | 71 | 120 | 42 | 63 | 134 | 131 | 22 | 24 |
Wind waves Height (m) Direction Period (s) | — | NNE 4 | N 5 | N 5 | NNE 5 | NNE 3 | — | NNE 4 | NNE 3 | — | N 4 | — | — | — | — | — | NNE 3 | NNE 4 | NNE 5 | N 6 | NNE 5 |
| kJ | — | 11 | 19 | 13 | 17 | 3 | — | 7 | 1 | — | 9 | — | — | — | — | — | 4 | 16 | 7 | 40 | 17 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 28 | 14 | 0 | 0 | 11 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 11 | 1 | 0 | 14 | 0 |
Best forecast wave conditions in Guanacaste | |||||||||||||||||||||
Best forecast wave conditions in Costa Rica | |||||||||||||||||||||
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Information about the Diria Surf forecast
The above surf forecast table for Diria provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Diria can be found by selecting the local surf guide option on the grey menu. Our Diria 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 (Diria) 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 Diria 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.
Diria 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.
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