Source: ILO Impact Insurance Full publication In the Sudano-sahelian region, which includes Northern Cameroon, the inter-annual variability of the rainy season is high and irrigation is scarce. As a consequence, bad rainy seasons have a massive impact on crop yield and regularly entail food crises. Traditional insurances based on crop damage assessment are not available because of asymmetric information and high transaction costs compared to the value of production. Moreover the important spatial variability of the weather creates a room for pooling the impact of bad weather using index-based