The academic year at Chulalongkorn University is divided into two distinct semesters, the First Semester and the Second Semester, each spanning approximately 15 weeks. The semesters are separated by winter and summer breaks, and enrollment in classes is required for both semesters. The summer session is an optional time for students to further their education.
Semester
First Semester
Second Semester
Summer Session (Optional)
Duration
August – December
January – May
June – July
Classes Begin
2nd week of August
2nd week of January
2nd week of June
Classes End
3rd week of December
3rd week of May
3rd week of July
Academic Calendar
Start and End Dates of Semesters – Academic Year 2025
First Semester
First Day of Classes
Midterm Examinations (If any)
End of First Semester Activities
Last Day of Classes
Final Examinations
End of First Semester
Monday, August 4, 2025
Monday, September 22 – Friday, September 26, 2025
Sunday, October 26, 2025
Friday, November 21, 2025
Monday, November 24 – Tuesday, December 8, 2025
Tuesday, December 9, 2025
Second Semester
First Day of Classes
Midterm Examinations (If any)
End of First Semester Activities
Last Day of Classes
Final Examinations
End of First Semester
Monday, January 5, 2026
Monday, February 23 – Friday, February 27, 2026
Sunday, March 29, 2026
Friday, April 24, 2026
Monday, April 27 – Tuesday, May 12, 2026
Wednesday, May 13, 2026
Summer Semester
First Day of Classes
Last Day of Classes and Examinations
End of Summer Session
Last Day of Academic Year
Tuesday, June 2, 2026
Friday, July 17, 2026
Saturday, July 18, 2026
Friday, July 31, 2026