I explained to my kids today that because Singapore is located on the Equator, there are no seasons.
E: You mean, like there's ONLY summer? Me: Yes, we don't have winter, autumn or spring. H: So, if the weather heats up, does the heat go down? (They sometimes speak in riddles!) Me: Well, it is about 30 degrees during the day and 25 at night. E: So do the people in Singapore wear special clothes? Me: What do you mean by special clothes? E: Like grass skirts or something. Me: No, we wear normal clothes like you do here, but they are made of thinner materials. J: Do you have trees in Singapore? Me: Yes, we have trees in Singapore.
I will have to bring in some photos of Singapore to show them, because I have no idea what they are imagining in their minds!