One can eat any / all sorts of nuts, dry fruit, chocolates, etc. (If it suits, like, some people have allergies) in any type of season; Garmi, Sardi, etc. But Yes, moderation is a must! And excess of everything is always Bad!
In normal quantities, they are good enough throughout the year use, however, if taken in excess quantities, they may be harmful! Ye aapko Ander sey farig b Kar saktay Hain! (If one knows what I mean!) 
