Surf Forecasts:
The Box surf forecast from 17 Aug 2026:
- Most powerful swell: Monday 17 Aug, 2PM (local time) - 1.5ft (0.5m), 5s period, ESE swell with 16 kJ wave energy.
Best Forecast Surf Conditions for The Box this week:
The most powerful waves expected at The Box in the next 16 days are 0.5m 5s and forecast to arrive on Monday (Aug 17) at 2PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 6s period and expected on Thursday (Aug 20) at 8PM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Mon 17th Aug) | 1.5ft (0.5m) 5s |
Table - best surf conditions forecast for The Box over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s be straight with you: it’s a tough stretch ahead. The Box is an advanced spot known for being inconsistent, and this 16-day window is pretty much a write-off for any proper surfing. We’ve got a long gap from now until the tail-end of the month where the ocean just isn’t giving us anything rideable.
Right from the start, Monday the 17th into Tuesday the 18th is a no-go. We’re looking at flat to tiny bumps with onshore or cross-shore winds making a mess of things. That pattern holds for most of the following week. There might be a few glassy mornings, like Sunday the 23rd with light NW air and that flat calm feel, but there’s literally no swell to work with. The energy readings are practically zero for days on end.
We finally see a little pulse try to show up around Wednesday the 26th. The Box gets a bump of 0.9m (about 3 ft) ESE swell, with a short, weak period of 6 seconds. The combined energy ticks up to a moderate 119, so there’s a little bit of push, but the wind is a moderate cross-shore from the NNW, putting a chop on the surface. It’s not good enough to call surfable for this demanding break, but it’s the most energy we see.
The end of the run, into the first couple of days of September, shows a bit more activity. On Monday the 31st of August and Tuesday the 1st of September, we see swell heights hovering around 3 ft to 3 ft, coming from the NNE. The periods are still short and weak, around 4 to 8 seconds. On the 1st, a cross-offshore breeze from the west might keep things a little cleaner, but the poor surf quality rating tells the real story. The combined energy on the 1st is 94, still low. For a spot like The Box that needs a proper push and direction, it’s just not going to line up.
The water temp? We don’t have the numbers, but in a blank spell like this, you’re just waiting for the next proper groundswell. It tends not to stay this poor forever.
Hang in there.
Rusty
Short Range ForecastMostly dry. Warm (max 31°C on Wed afternoon, min 26°C on Mon morning). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Fri morning. Warm (max 35°C on Wed night, min 25°C on Fri morning). Mainly strong winds. | ||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | ||||||||||||||
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) | ESE 5 | ESE 5 | ESE 5 | ESE 5 | ESE 5 | SE 5 | NE 8 | NE 7 | NE 6 | SSW 5 | SSW 5 | SSW 6 | SSW 6 | SSW 6 | SSW 7 | SSW 5 | SSW 4 | NE 5 | NE 4 |
Wave Graph  | |||||||||||||||||||
 kJ | 0 | 0 | 16 | 14 | 0 | 0 | 3 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | on | off | cross-on | cross | cross-off | cross-off | cross-off | cross-off | off | cross-on | cross-off | cross-off | on | off | cross-off | cross | cross-off |
High Tide | 00:55AM0.10m | 2:46PM0.06m | 00:57AM0.08m | 3:55PM0.08m | 11:47PM0.07m | 4:53PM0.09m | 5:49PM0.10m | 6:40PM0.11m | 7:37PM0.11m | ||||||||||
Low Tide | 8:34AM0.04m | 6:39PM0.06m | 8:16AM0.04m | 9:57PM0.07m | 8:06AM0.03m | 8:04AM0.03m | 8:16AM0.02m | 8:45AM0.02m | |||||||||||
 |  | |  | | | | | |  | | | |  | | | | | | |
 | — | 7:13 | — | — | 7:15 | — | — | 7:15 | — | — | 7:16 | — | — | 7:16 | — | — | 7:18 | — | — |
 | 8:52 | — | 8:51 | — | — | 8:50 | — | — | 8:49 | — | — | 8:46 | — | — | 8:45 | — | — | 8:45 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — |
Temp °C | 28 | 28 | 30 | 29 | 29 | 30 | 29 | 30 | 31 | 35 | 31 | 32 | 29 | 27 | 27 | 27 | 26 | 27 | 27 |
Feels °C | 31 | 31 | 32 | 31 | 31 | 31 | 28 | 30 | 31 | 35 | 32 | 26 | 30 | 25 | 26 | 27 | 29 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | ESE 5 | ESE 5 | ESE 5 | ESE 5 | ESE 5 | SE 5 | SE 5 | ESE 5 | SE 5 | SSW 5 | — | — | NW 4 | SSW 6 | — | — | — | NE 5 | NE 4 |
| kJ | 8 | 9 | 16 | 14 | 17 | 12 | 12 | 9 | 5 | 46 | — | — | 1 | 90 | — | — | — | 1 | 1 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | NE 8 | NE 7 | NE 6 | SE 4 | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 3 | 2 | 1 | 1 | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | SSW 3 | S 4 | S 3 | SSW 5 | SSW 5 | SSW 6 | SSW 6 | — | SSW 7 | SSW 5 | SSW 4 | S 3 | SSW 3 |
| kJ | — | — | — | — | — | — | 2 | 1 | 5 | 83 | 35 | 59 | 77 | — | 58 | 26 | 14 | 8 | 7 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 396 | 396 | 492 | 538 | 107 | 672 | 671 | 689 | 793 | 68 | 68 | 571 | 396 | 275 | 370 | 418 | 396 | 418 | 396 |
Best forecast wave conditions in Valencia | |||||||||||||||||||
Best forecast wave conditions in Spain (Europe) | |||||||||||||||||||
Header Global | |||||||||||||||||||
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FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our The Box surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the The Box Surf forecast
The above surf forecast table for The Box provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at The Box can be found by selecting the local surf guide option on the grey menu. Our The Box 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 (The Box) 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 The Box 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.
The Box is 4 km (2 miles) from Javea. If you plan a holiday in Valencia, look for hotels and other accommodation in Javea. Javea has rooms for a wide range of budgets as well as car hire and transport links.
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