'While the average water temperatures of Lake Victoria fluctuate little throughout the year, they have been increasing steadily over the last few decades. The average surface temperature on the Ugandan side of the lake increased by an average of 0.5 degrees Celsius during the period from the 1960s to the late 1990s.

This may not appear dramatic at first sight, but it puts a highly complex regional climate system under pressure to change. Models show that a 1.5 degree rise in temperature can result in some areas in the lake’s surroundings receiving up to 100 per cent more average annual rainfall, others therefore correspondingly less'.