Choose a cove and the forecast above loads the next seven days. You get the highest wave of each day, its period, the strongest wind and its direction, the average sea temperature, the daytime maximum air temperature and the UV peak. Each day also gets a one-line verdict that turns those numbers into something you can act on, from “Calm swim day” to “Rough sea, stay near the shore”. The curve above the columns shows how the waves build and fade across the week.
This Ibiza beach weather view exists because a general island forecast says very little about a particular cove. Ibiza’s west coast faces open water, and a north or west wind that barely matters on the east side can put a metre of swell into Cala Comte while Port des Torrent stays flat.
How to read the 7-day forecast
Wave height is the significant height of the highest waves of the day, in metres. Under 0.3 m the sea is a pond. From 0.3 to 0.7 m you get light chop, still fine in sheltered coves. Around 1 m and above, the open beaches have real waves.
Period is the time between waves. Short periods (4 to 5 seconds) mean local wind chop; longer periods (7 seconds and more) mean swell that has travelled from a distant storm. Swell wraps into coves more than wind chop does.
Wind is the strongest sustained wind of the day, in km/h, with an arrow showing which way it blows. On this coast, wind from the north and west hits the beaches head-on; wind from the east and south blows off the land and flattens the water close to shore.
Sea temperature is the daily average at the surface. UV is the midday peak; in midsummer it is very high, so take shade between noon and four.
Ibiza beach weather by season
In July and August the typical pattern is calm mornings and a sea breeze building in the afternoon. The sea is at its warmest, about 25 to 26 °C. September keeps the warm water but brings back the rain: on AEMET’s long-term averages it is as wet as October and November after a nearly dry July. From November to March the sea drops towards 15 °C and the coves are left to walkers.
The when to visit guide has AEMET’s long-term averages for every month, with sunshine hours and rain days.
Limits of a model forecast
The values come from Open-Meteo’s weather and marine models, refreshed hourly. Models describe a grid cell of sea, not the water at your feet. A deep, closed inlet like Port des Torrent is usually calmer than the model suggests, and an exposed point like Cala Comte can be rougher. On the beach, the lifeguard’s flag outranks any forecast: yellow means take extra care, red means no swimming. The rules page explains the flags.
Questions people ask
How warm is the sea in Ibiza?
On average it is about 25 °C in July, 26 °C in August and 25 °C in September, falling to about 15 °C in late winter. The forecast above shows the modelled sea temperature at each cove for the coming week.
What does wave height mean for swimming?
Below about 0.3 metres the sea is flat and ideal for children and snorkelling. Between 0.3 and 0.7 metres there is some chop, but sheltered coves stay swimmable. Above about 1 metre the open beaches get proper waves and currents; stay near the shore or choose a closed inlet like Port des Torrent.
Where does this Ibiza beach weather forecast come from?
It uses the Open-Meteo weather and marine models, queried live for each cove's coordinates. They are model values on a grid, not buoy readings, so treat small differences between neighbouring coves with caution.
Which west-coast beach is calmest when it is windy?
Port des Torrent, a deep and closed inlet, is usually the most sheltered. Cala Bassa is well protected from the typical summer winds. Check the forecast for each one, because a change in wind direction changes the answer.
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