Predicting the Weather

My Exchange student is from Havana, Cuba, as seen above ^ its shows the weather averages over there. Its maximum temperature seems to be in august reaching 31 degrees Celsius, which is pretty hot, just like over here in Australia. In January, obviously winter time, it seems that the temperature can get down to around 14.5 degrees, which is pretty cold. I expect when it is my turn to travel to his home country( which is in May) i look to bring normal weather clothes, with maybe some jumpers and a few pairs of board shorts. As in May in Cuba it seems hot but still just after winter has finished.  

As seen above ^ is the Australian (Sydney) graph of yearly temperature. It shows that in July to August, Australia, can get considerably low in temperature. But near Christmas time (when My Cuban Exchange is visiting Australia) in January, the real Aussie Sun will show, reaching a average of about 26.5 degrees Celsius. I am to tell my companion from Havana to bring some beach clothes (boardies, t-shirts etc) for the hot Australian Sun, but also to bring some tracksuits or long sleeved tops to rug up when it gets cold at night. I also am to tell him to bring some snow clothes for our trip to thredbo BELOW VVV

In my Cubans time spent over here in Australia, I intend to take a visit to Thredbo with him to show him that Australia does have some snow and cold climate. The graph above explains itself, reaching below -10 in records and -5 on average. Thredbo village does have snow fall and I intend to tell my exchange to bring some snow gear for the cold temperatures.