The weather is usually sunny and relatively dry, but hurricanes are frequent during summer.

Famines in India were very frequent during the period 1940s to 1970s.

Human rights violations are most frequent during periods of political unrest.

Attacks usually become more frequent during the first few years of the disease and then come less often after that.

And such store closings have become frequent during the recession.

Serb-Croat confrontations became ever more frequent during late 1990 and early 1991.

Border clashes, some serious, were frequent during 1990 and early 1991.

A recent large case series from Europe found that takotsubo was slightly more frequent during the winter season.

Services are more frequent (up to every half an hour) during peak hours when demand is highest.

While crime occurs throughout the year, it is more frequent during Carnival and the weeks prior.