Humidity can affect the uptake of a clutch in a manual transmission. Usually, this shows up as being a little more "grabby" (not as smooth) on humid mornings. However, in my experience, this is only a characteristic of a cold clutch, and the "grabbiness" goes away quickly as the clutch warms up.
Mk3 |╠╬╝|SGM|203a|Moonroof|17" Paint/Mach Whls|K&N 57S-4000 -snorkel|FFE RMM|Steeda STB, RSB|JBR bushings
Mk1|╠╬╝|Pitch Blk|Prem pkg|Moonroof|SVT Snorkel|SVT Susp|Steeda STS|Z-Eng RMM|Magnaflow exh