Mallorca in September and Late August: What It’s Really Like

The first question I get about the Mallorca retreat isn’t about the yoga. It’s about the weather.

Fair. So here are the real numbers, what the sea is doing, what the storms look like, and what’s happening in the villages that week — pulled from Spain’s weather agency data, the Calvià town hall, the boat operators, and last September’s local news rather than a “best time to visit” listicle. Sol & Soul runs August 27 to September 3, which straddles the two months, so I looked at both.

How hot is Mallorca in late August?

Late August highs average around 30°C, about 86°F, with nights in the low 70s. Inland and away from the coast, afternoons often reach 33–34°C. The air carries more humidity than a dry western summer, so a coastal 86 feels a touch warmer than it reads.

That’s a summer day. You practice at eight, you swim after lunch, you come back out when the light goes gold — which is how the island runs in summer anyway. Restaurants don’t fill until nine. Villages close for lunch. Match the rhythm and the heat is part of the point.

What is Mallorca like in September?

September is the month locals wait for. The average high drops to about 28°C, 82°F, evenings cool enough for a light layer, and the water stays warm while the island gets a little quieter. The sea holds its summer heat, around 24°C in early September, and the month often feels like an extension of summer.

The shift is gradual. The first days of September feel like August with a softer edge; by mid-month the mornings tell you the season has turned. Our week sits right on that hinge: the warmest sea of the year on the front end, and the first cool mornings on the back.

How warm is the sea in Mallorca in late August and September?

Warm — this is the single best argument for the timing. The sea around Palma peaks at about 26.8°C, over 80°F, in mid-August, and July through September holds water between 24°C and 26°C, ideal for swimming. Water temperature lags the air: the sea stays comparatively cool until early summer before reaching its maximum in August, so a June retreat gets warm air and cooler water, and a late-August one gets warm air and warm water.

For the boat day and the floating meditation, this is exactly what you want. No gasping. Just in.

Does it rain in Mallorca in September?

Sometimes, and when it does it’s an event. August averages about two rainy days and 8 mm; September averages around six rainy days and 29 mm. The storms that break summer are the gota fría, the cold drop: the Mediterranean is at its warmest, cooler air arrives from the northwest at altitude, and when the two meet over the sea, powerful storm cells form that can drop weeks of rain in a few hours.

A local writer describes it well: in September, summer “breaks” with a spectacular thunderstorm or two, and as quickly as they arrive they disappear and everyone is back on the beach, with the temperature dropping for a day or two before returning to normal. Last year’s arrived on September 21: forecast in advance, summer ended on a Sunday night with a major storm, and winds of 52 km/h were recorded in Calvià.

For our week the odds are low, since the pattern usually shows up mid-to-late September, but not zero. If one comes, we practice in the shala, watch it from the terrace, and it’s over by morning. Nobody who’s watched a Mallorcan thunderstorm from a stone farmhouse calls it a bad day.

Are there jellyfish in Mallorca in late summer?

Some, and mostly harmless ones by then. Jellyfish numbers peak in July and August and decline through September and October as the water cools, though some remain. The one you’ll most likely meet in our window is the fried egg jellyfish — a flat disc with a yellow-orange bump like a yolk, virtually harmless to humans, and common in shallow water in August and September. Snorkelers like it.

The boat operators’ rule: several days of easterly wind, the levante, push jellyfish toward the coast, so if the forecast says levante, make it an inland day. Our captain will know before we do.

What’s happening in Mallorca in late August and early September?

More than you’d expect, and most of it isn’t for tourists. Three things fall in or near our week:

Festes del Rei en Jaume, Santa Ponça. This is Calvià’s own fiesta — our municipality, twenty-odd minutes down the hill from the finca — and it lands on our dates every year. It commemorates King Jaume I landing on this coast in 1229 with a fleet of more than 150 ships to take the island from its Moorish rulers, and it has been celebrated since 1929. The 2026 edition ran August 26 to September 6, with the Moorish parade on the Friday and the reenactment of the landing and final battle on Santa Ponça beach on the Saturday. Around 1,400 costumed residents in eleven Moorish and eleven Christian companies take part. There’s a Night of Fire with the Dimonis de Calvià, a medieval market on the beach promenade, and a gathering of gegants, the giant figures, that parade through town. Fireworks close it on the final Sunday.

The 2027 program comes out in August, but the shape is the same every year: the battle falls on the first Saturday of September, which in 2027 is the day after our retreat ends. The run-up — giants, fire, market — falls inside our week. If the dates line up, we’ll arrange a van into Santa Ponça for one of the fiesta nights as an optional add-on. And if you want the battle itself, here’s how to stay one more day for it →.

Festa des Vermar, Binissalem. The grape harvest festival in the island’s original wine town, celebrated since 1965. In 2026 it ran September 4 to 27, with grape treading in the plaza, a grape battle where tonnes of overripe fruit fly, and the fideus de vermar dinner where thousands eat noodle stew at long tables in the street. The big weekends are after we leave, but the harvest itself is underway while we’re there and the bodegas are open.

Nit de l’Art, Palma. The third week of September, when Palma’s museums and galleries open their doors for a night of art and performance. Worth knowing if you’re extending your trip.

And every town has its own patron saint fiesta somewhere in this stretch. Ask a bar owner.

Sol & Soul · Son Boronat, Calvià · August 27–September 3, 2027
Fourteen women, two practices a day, the warmest sea of the year, and a fiesta down the road. From $3,497, airport transfers included. See dates, pricing, and what’s included →
Not ready? [Join the list] and I’ll send dates before they go public.

What’s in season in Mallorca in late August and September?

Figs. Fig trees have grown on the island for over 2,000 years and fruit from August into September; you’ll get them at breakfast, with goat cheese, and possibly off a tree. Melon and watermelon run from June through the end of September. Grapes are coming in. The olive harvest is later — late October into early November in the south — but the trees are heavy with fruit while we’re walking under them.

This is the eating season. Our chef cooks from whatever the market has that week, which in late August means tomatoes, figs, and very little I’d have to talk you into.

Is Mallorca crowded in September?

Less than August, but not empty, and I’d rather be straight with you than sell a ghost town. Mallorca had around 13.5 million visitors in 2025, and September has stopped being the quiet month it used to be: according to ABTA, 24 percent of British travellers planned a September holiday this year, up from 17 percent a few years ago, in what’s being called a “super shoulder season”. Palma–Calvià hotels ran at 85 percent occupancy in September 2025.

What actually changes: resort beaches thin out once European schools go back, roads ease, restaurants take walk-ins again. Up at a finca in the hills, twenty minutes from the coast, none of it reaches you anyway. That’s most of why I chose a farmhouse over a beach hotel.

For Americans: United added nonstop service from the US to Mallorca in 2022 and has since added flights and extended the season, so check for a direct before assuming a connection.

So is late August a good time for a yoga retreat in Mallorca?

Yes. Warm afternoons that belong to the pool, the warmest sea of the year for the boat day, a fiesta in our own municipality, figs on the table, and the first cool mornings of September on the back end. The trade-off is a small chance of a thunderstorm. I’ll take that over a June with a 20°C sea.

If you want the whole week laid out — schedule, food, rooms — it’s in what a yoga retreat week in Mallorca actually looks like →. And here’s what to pack, heat and hikes included.

[One line in your voice on why you chose these dates.]

One brave decision. Sol & Soul, Mallorca, August 27–September 3, 2027. Reserve your spot →
Love, Autumn

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