How to avoid the rains..
My girlfriend and I travelled on a DR650 from CT to Swaziland, back to CT and then up through Nam, Bot, Zam, Mal, Moz, Tan, Ken, Eth, Uga, and Rwanda.
We started at the beginning of March 09 and spent 7 months on the road.
I don't think we could have picked a better time to travel through Africa.
Namibia's very lush towards the end of the rainy season, it's a cooler time of year to drive and you'll avoid the strong cross winds that pick up later in the year.
In all the time that we were on the road it rained 4 times.. and we were dry five minutes later.
Africa throws everything at you, enjoy it..
p.s. You'll find the best drivers in Mozambique and the worst in Uganda, the friendliest people in Malawi and Zambia and the worst in Ethiopia..