Arriving Guangzhou Oct 4 for 5 nites, then to Hong Kong on Oct 9. Weather at these dates?

It is a little early to know the latest weather forecast. Based on the past weather records, it shall be still hot in the two places at that time and the hightest temp shall reach over 90F. Showers or light rain shall happen then, so prepare light rainy gear or umbrella in case. Usually, the rain won't last for a whole day, so your travel won't be influenced a lot.