Processionary Season 2026 Begins Across the Costa Ballena Area
Each year, it begins almost unnoticed. A passing comment from a neighbour, a photo shared in a local group, a first sighting along a familiar path. And then, within days, they seem to be everywhere.
Across Cádiz province — including the pine areas around Costa Ballena, Rota and Chipiona — processionary caterpillars have started their seasonal descent. After a winter shaped by rain and a return of warmer temperatures, the timing this year follows a familiar pattern, with activity building through February and March.
What matters is not just that they are present, but what stage they’ve reached. This is the period when the caterpillars leave the safety of the pines and move across the ground in their slow, unmistakable lines, searching for sandy soil where they can burrow.
For dog owners, this is when routines need to shift. The caterpillars are covered in fine toxic hairs that can cause strong reactions on contact or when inhaled. Dogs, curious and close to the ground, are particularly exposed. Even a brief encounter can lead to swelling or breathing difficulties.
If you suspect contact or notice symptoms, it’s best to act quickly. Local veterinary clinics familiar with these cases include Veterinary Clinic Entre Mascotas in Chipiona and Veterinary Clinic Iris in Rota, both used to dealing with processionary-related incidents during the season.
The most reliable approach is also the simplest: avoid pine-heavy areas for a few weeks, or keep dogs close and under control when walking nearby.
Local authorities have already carried out preventive treatments earlier in the season, including drone-based applications in selected forest zones across Andalusia. But once the caterpillars reach the ground, awareness becomes the most effective form of protection.
For those living in or visiting Costa Ballena, it’s less about concern and more about understanding the moment. The landscape hasn’t changed — but for a short period, how you move through it should.
For a more detailed look at where and when they appear, and how locals typically handle the season, see our guide to processionary caterpillars in Costa Ballena, Rota and Chipiona.