Why Tunisia is particularly exposed

Not all countries are equal in the face of climate disruption. Tunisia combines several vulnerabilities that make it particularly exposed.

1. A Mediterranean “hot spot”

The Mediterranean basin is warming faster than the planetary average. Scientists describe it as a climate hot-spot: summers there grow longer and drier, and heatwaves more frequent. Tunisia is on the front line.

2. Water that is already scarce

The country lives below the water-scarcity threshold: the amount of fresh water available per inhabitant is structurally low. There is therefore little room to absorb shocks: one more dry year quickly translates into restrictions.

3. An agriculture hanging on the rain

A large part of the crops — starting with cereals — is grown rain-fed, without irrigation. Yields therefore depend directly on the year’s rainfall. When the rains fail at the wrong moment, the harvest drops and imports climb.

4. A coastline under pressure

Most of the population, the cities and economic activity are concentrated along the coastal strip. Yet this strip is exposed to sea-level rise, to erosion, and to the salinisation of the aquifers near the shore.

A vulnerability that compounds

None of these factors stands alone: heat worsens the water shortage, which weakens agriculture, which weighs on the economy. It is this compounding effect that makes adaptation a central challenge for the country.

Going further

Let us look in detail at the most structuring factor: Water stress, explained