Summer Session Calendar
All deadlines are 11:59 pm Pacific Standard Time (PST) unless otherwise noted.
Contact summer@ucsd.edu with any questions.
The Schedule of Classes will be available TBD.
April TBD
Enrollment for Current UC San Diego Students Begins and Applications Open for Incoming/Visiting Students
Current students can find their Summer Session enrollment time on WebReg.
UC San Diego Summer Session is open for anyone to attend.
Incoming and visiting students need to complete the steps listed on the Application & Enrollment page in order to register .
April TBD
Enrollment for Incoming/Visiting Students
Enrollment opens on April TBD for registered visiting and incoming students.
Session 1
June 30 - August 2, 2025 (5 weeks)
Deadlines: TBD
- Add via WebReg -
- Billing statements available via Tritonlink -
- Cancellation for Non-Payment*-
- Change Grade Option-
- Drop with a Full Refund -
- No Refunds after TBD for Summer Session I
- Drop without a “W” Deadline -
- Drop with a “W” Deadline -
- Financial Aid Disbursements -
- Late Add with Instructor Approval-
- No classes are held in observance of Independence Day, July 4, 2025
- Registration Fee Payment Deadline -
- Waitlist Ends-
*Cancel for non-payment: If you are not planning to attend, please drop your course. Do not depend on the automated system.
If you have already paid for your courses, and decide to add an additional course to the same session, the tuition and fees for your new course are due by the refund deadline date of that session.
**If you register after the payment deadline, you will not be canceled for non-payment
***Drop policies for lab courses may differ. Refer to the Schedule of Classes for exceptions.
Please review the Enrollment Section for more information.
Session 2
August 4 - September 6, 2025 (5 weeks)
Deadlines: TBD
- Add Via WebReg -
- Billing statements available via Tritonlink -
- Cancellation for Non-Payment* -
- Change Grade Option -
- Drop with a Full Refund -
- No Refunds after TBD for Summer Session II
- Drop without a “W”-
- Drop with a “W” -
- Financial Aid Disbursements -
- Late Add with Instructor Approval -
- No classes are held in observance of Labor Day, September 1, 2025
- Registration Fee Payment Deadline -
- Waitlist Ends -
*Cancel for non-payment: If you are not planning to attend, please drop your course. Do not depend on the automated system.
If you have already paid for your courses, and decide to add an additional course to the same session, the tuition and fees for your new course are due by the refund deadline date of that session.
**If you register after the payment deadline, you will not be canceled for non-payment
***Drop policies for lab courses may differ. Refer to the Schedule of Classes for exceptions.
Please review the Enrollment Section for more information.
Session 3 - Special Session
Dates vary (non-five week courses)
- Registration Fee Payment Deadline -
- Cancellation for Non-Payment -
- Everything Else Varies by Class
*Cancel for non-payment: If you are not planning to attend, please drop your course. Do not depend on the automated system.
If you have already paid for your courses, and decide to add an additional course to the same session, the tuition and fees for your new course are due by the refund deadline date of that session.
**If you register after the payment deadline, you will not be canceled for non-payment
***Drop policies for lab courses may differ. Refer to the Schedule of Classes for exceptions.
Please review the Enrollment Section for more information.
Planning ahead? → See future Summer Session dates.
Looking back? → See prior year calendars: Summer 2024 and Special Summer 2024, Summer 2023 and Special Summer 2023, Summer 2022, Summer 2021, Summer 2020, Summer 2019, Summer 2018.
