Weather
Some weather statistics
Average days of rainfall and average rainfall in Taipei 1971-2000:
Jan 15 86.5
Feb 15 165.7
Mar 16 180.0
April 15 183.1
May 16 258.9
June 15 319.4
July 12 247.9
Aug 14 305.3
Sep 13 274.6
Oct 12 138.8
Nov 14 86.2
Dec 13 78.8
Total 170 2325.2
This not a lot for Taiwan. There are five locations that get more than 200 days of rainfall per year, and Lanyu has 224 days per year! Several locations get more rain than Taipei does, and the worst is Anbu with an annual average of 4892mm.
The moral of the story is that in Taiwan, ignore the weather. If you need sunshine to go biking, sell your bike. From now on, that's our motto.