User blog comment:Silver-Haired Seireitou/Fanon Canon Part 2/@comment-2089817-20141121145054/@comment-2089817-20141122012738

Kubo has established that it gets very cold in Soul Society, as shown in earlier chapters were individuals were wearing scarves and other winter-related garments. And we already know rain is possible in the Soul Society. So snow is absolutely within the realm of possibility. There is no reason to state with any certainty that Soul Society is landlocked. The absence of evidence is not the evidence of absence. And well, we all know Kubo's track record when it comes to detailing certain aspects such as this.