The number of days until summer in 2025 depends on the exact date summer begins. For 2025, the summer solstice, which marks the start of summer in the Northern Hemisphere, is on Friday, June 20, 2025
. Given today's date is Saturday, May 10, 2025, the countdown to the first day of summer is:
- 42 days until June 21, 2025 (some sources mark summer starting June 21)
- 41 days until June 20, 2025 (the actual solstice date for 2025)
Most sources agree on about 41-42 days remaining until the start of summer from May 10, 2025. Therefore, there are approximately 41 to 42 days until summer begins on June 20-21, 2025.