The opening hours of the gardens and the castle of Villandry are as follows:

Gardens:
From January 1 to February 6: 9:00 a.m. to 5:00 p.m.
From February 7 to February 28: 9:00 a.m. to 5:30 p.m.
From March 1 to March 31: 9:00 a.m. to 6:00 p.m.
From April 1 to September 30: 9:00 a.m. to 7:00 p.m.
From October 1 to October 25: 9:00 a.m. to 6:30 p.m.
From October 26 to November 11: 9:00 a.m. to 5:30 p.m.
From November 12 to November 27: 9:30 a.m. to 5:00 p.m.
From November 28 to December 31: 9:30 a.m. to 5:30 p.m.

The gardens are open every day of the year, including holidays, except on December 25.

Castle:
From January 1 to January 5: 9:30 a.m. to 5:30 p.m.
From January 6 to February 7: closed
From February 8 to February 28: 9:00 a.m. to 5:00 p.m.
From March 1 to March 31: 9:00 a.m. to 5:30 p.m.
From April 1 to June 30: 9:00 a.m. to 6:00 p.m.
From July 1 to July 31: 9:00 a.m. to 6:30 p.m.
From September 1 to October 25: 9:00 a.m. to 6:00 p.m.
From October 26 to November 11: 9:00 a.m. to 5:00 p.m.
From November 12 to November 28: closed
From December 1 to December 31: 9:30 a.m. to 5:30 p.m.

The castle is closed on December 25.
The last entry to the castle is allowed 30 minutes before closing.