Translation:Season of short rains
I was a PC Volunteer in Kenya. There are two rainy seasons and they don't always come at predictable times. They don't correspond to seasons as we know them in the Northern hemisphere (so it is inaccurate to translate them as autumn or summer, etc.). The short rains are heavy bursts of rain. They come every day during that season but don't last all day. The long rains are drizzles that can last day after day.
Hmm, I would assume this means that it's a season (of no specified length) characterised by short rains, and then when the rainy season comes, that brings more substantial, longer periods of rain. That's just going from their phrasing.
If you're right, what would distinguish the short season of rains from the immediately following rainy season?