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