Thank you all. Jonesy, you are right -- this skirt is going to work all year round here. The warm tones say fall or winter, the pinks and whites and floral elements say spring/ summer. And the fabric is cross seasonal.
Sharan, the skirt is warmer toned, IRL, too, but it does include some cooler elements (the navy and white). And one of the pink tones is neutral rather than warm or cool. It's distant from my face, so it works. It would be more difficult for me to deal with if it were a dress. This way, I can wear tops in colours that work for me. Despite the red in the skirt being rusty, and the pinks being on the warmer side, they somehow work with a cool pink, magenta, cooler and true reds, and other tones that I would not have expected. But truthfully, I'll mostly wear it with white or navy tops.
It's surprisingly chameleon, though. You can see me trying it with various colours (all cool or clear, i.e. the reds) here.
To get really analytical about it -- my own sense of why it works is a combination of its inclusion of two colours that are my key neutrals (navy and white), the fact that one of those, the white, harmonizes with my hair, and finally, the fact that even though it is a floral print it is graphic -- there are strong lines in it, and some angles. It's not too "soft" or "flowy." Also, the pleats give the skirt some "sharpness" which also works to my advantage.