The Theorem that this Virus is likely Seasonal Effected has been a topic that has been actively shot at by a wide cross-section of Science and National News Media personalities. In watching all of this from a few steppes removed, it seems that there is a growing number of individuals that seem to want this Virus to succeed.
Whether this Virus is or is not effected by the warming weather of Summer, it will be effected by the increased hours of Sunlight in the Northern Hemisphere! In addition, the Sun's rays are more direct during this period of time. That means that the cleansing effect of the Ultra Violet spectrum kills a greater amount of surface Virus, which are exposed to the Sun's Light.
The reality is that Sunlight exposed surfaces outside and to a lesser degree inside will have a much reduced level of Virus cells as the Ultra Violet spectrum activity kills them.
FYI #1: Normal blue spectrum lighting will not have the same effect!
FYI #2: Yes, a true Ultra Violet producing rod can be used inside, but great care needs to be used to limit exposure to living creatures. Okay, with the exception of reptiles.