Cayasta owns a temperate climate. Its temperature rises during the day, and decreases at night because of the great humidity. One stands out by the good nonexistence of four delimited seasons, with little annual thermal variation with warm summers and to invier to us smooth, precipitations that throughout arrive at 1,100 mm distributed in more or less even form the year and abundant humidity. The warmest station goes from November to March.

Average temperature in winter 10ºC

Average temperature in summer 22ºC

Cayasta is under the direct influence of the river San Javier that constitutes its South limit and the stream Passage of the Tiger that in sector is the North limit. San Javier is affluent of the Parana that not only is the main santafesino river but it forms a subriver basin of 1.510.000 of km2s and this between most extensive of the world with his 3,740 kilometers in length, including the section of the Paranaiba.