Puglia Geography & Climate

Puglia is long, low and made of limestone, and those three facts explain nearly everything about how it looks and how it is farmed.

Shape and structure

The region runs about 400 km from the Gargano promontory in the north to Santa Maria di Leuca at the tip of the heel, and it is nowhere very wide. Over half of it is plain — the highest proportion of any Italian region — and its highest point, on the Gargano, is only 1,152 m.

Four zones sit in sequence. The Gargano is a limestone massif that was an island before sediment joined it to the mainland, which is why its flora and fauna differ from the surrounding plain. The Tavoliere below it is the second-largest plain in Italy, hot and given over to wheat. The Murgia is a low karst plateau of thin soil, drystone walls and sinkholes. The Salento at the far end is a flat limestone shelf between two seas.

Karst and water

Limestone is porous, so rain sinks rather than running off. Puglia has almost no surface rivers, and historically depended on cisterns and on the Apulian Aqueduct, begun in 1906, which still pipes water from springs in Basilicata — one of the largest aqueduct systems in Europe, built because the region could not supply itself.

The same geology produces caves. The Grotte di Castellana extend some 3 km underground, and the coast at Polignano is undercut with sea caves.

Coast

The Adriatic side is mostly rock and low cliff; the Ionian side has the long sand beaches. The Tremiti islands lie about 20 km offshore from the Gargano. Salt pans at Margherita di Savoia are among the largest in Europe and are a major stopover for migrating flamingos.

Consequences

Thin soil and reliable sun suit olives and vines far better than anything needing water, which is how the region came to hold roughly 60 million olive trees. It also makes Puglia vulnerable: drought is a recurring constraint, and the spread of Xylella fastidiosa through the Salento groves since 2013 has changed that landscape permanently.

Puglia has a Mediterranean climate with strong continental influence inland, and the flatness means there is little shelter from either sun or wind.

The pattern

Summers are hot and reliably dry. Coastal highs sit around 30-32 °C in July and August, while the Tavoliere and the inland Salento regularly reach 35-38 °C with almost no shade. Winters are mild on the coast, generally 10-15 °C by day, and this is when nearly all the rain falls. Inland and on the Gargano it is genuinely cold, and snow falls on the Murgia most winters.

Wind

Wind is a constant and shapes the region more than visitors expect. The tramontana from the north makes winter feel colder than the thermometer says; the scirocco from Africa brings heat and sometimes dust. The Salento, with sea on both sides, is windy almost permanently — which is what makes its summers bearable.

Water

Annual rainfall is among the lowest in Italy, roughly 450-650 mm, concentrated in winter. The karst geology means little is retained at the surface. Drought years bring agricultural restrictions and occasional domestic ones.

Practical notes

• July and August inland are genuinely punishing in the middle of the day; the coast is several degrees cooler and windier.
• The sea is warm enough to swim from roughly June to October.
• Spring arrives early — April is already pleasant when much of Italy is not.
• Winter on the Gargano requires proper clothing; it is not the same climate as the coast below it.