Answer:
1. Es invierno.
2. Es verano.
3. Es primavera.
4. Es otoño.
Explanation:
In the first example, we have Ricardo, from Argentina who doesn't like summer months and he has to wear the coat, pants and the boots, because it's cold, so the correct answer would be winter.
In the second example, we have Patricia, from Colombia; she is going to play football because it's too hot, so she will wear her tennis shoes and a cap, because it's summer.
In the third example, we can notice they describe spring months - March and April, so the correct answer would be spring.
In the last example we can find the description of the autumn, because this person says it's a bit cold, but he/she doesn't need a coat and will enjoy the beautiful colors of the autumn.