"A monkeys wedding" is a common South African expression for a 'sunshower' - the 'phenomenon' in which rain falls while the sun is shining.
I recommend reading the wikipedia article about them, because not only will you be graced with a photograph of "a sunshower over a parking lot" (location unknown...) but you'll also find out all kinds of facts and tidbits about different folkloric names for sunshowers. Often they involve animals marrying.
Example: In Bulgaria it is the bears getting married, and in Korea it is a male tiger marrying a fox.
After a walk in the 'bracing' wind, we settled down beside a fire, with cups of tea, a burger, venison bangers 'n' mash and a lamb shank. Lucky little brats.