Why CH3OH is more acidic than …

The methyl group slightly takes away electron density from the oxygen atom, unlike the hydrogen in water, which actually contributes more electron distribution.When considering the acidity of an compound, consider these four elements:

1.  Attached electronegative atom
2.  Resonance structures
3.  Size of molecule
4.  Induction (proximity to other electron-withdrawing groups)
4th is the reason why methanol is more acidic than water, but as you probably know, it doesn't contribute much

Due to the +I group of CH3 group, the bond in CH3OH becomes weaker and breaks into CH3O- where as bond energy in H2O is more.Hence H2O is more basic than methanol.Methanol is acidic than water because its conjugate base methoxide is weaker than waters conjugate base hydroxide.

Due to +Ieffect of methyl group