Nearly half of hotel nights in Spain are concentrated in summer

Spain's INE 2025 confirms what every Spanish hotelier already knows: almost half of all hotel nights happen in just four months, from June to September. Hosteltur reports it using the Hotel Occupancy Survey. Not a surprise, but a good reminder that the problem is still there.
My take: if summer fills up, the rest of the year is a battle. That's why hoteliers keep trying different levers: tapping long-haul demand, betting on events and conferences, chasing senior travellers in off-season or opening routes to Nordic markets. There's no single recipe, but mixing markets and off-season products helps smooth the curve.
I see an opportunity here, not a threat. Seasonality is a known problem, so it can be tackled. Whoever manages to spread hotel nights across the year turns a weak spot into a competitive edge.
Quick questions
What share of hotel nights happen during summer in Spain?
Which months have the highest hotel concentration in Spain?
What measures are hotels taking to fight seasonality?
Does seasonality only affect beach hotels?
What opportunity does seasonality create for a hotel?
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