I have to be honest: I'm not 100% sure whether this is a bug or an intended feature but if it is an intended feature, I just don't get it at all. Tartosa is a world inspired by the Mediterranean, which is where I have lived for many years and I can say that bad weather in spring and especially summer is an absolute rarity. Yet in Tartosa, spring and summer almost always comes with cloudy weather and rain. It's also extremely annoying since it's meant to be a "wedding world", so good weather would be much, much more fitting than the weather we currently get. Right now, almost any world (including Windenburg, Brindleton Bay and Henford-on-Bagley) get better weather in spring and summer than Tartosa does, and I again just cannot imagine that this is an intended feature for a Mediterranean-inspired world meant for (outdoor) weddings to boot.
Edit: I don't know how this ended up in Technical Issues rather than Bug Reports which is where I'm pretty sure I clicked "new topic" lol but this is meant as a bug report, not a technical issue!