When Does Summer Start In Southern Hemisphere Brazil Summer Start Date ⚡

For , summer 2025–2026 begins on: December 21, 2025 (most years, though occasionally December 22 depending on the year and time zone).

In the Southern Hemisphere, summer officially starts on the (between December 20–23). For , summer 2025–2026 begins on: December 21,

If you meant (end of year), the same December solstice applies. summer 2025–2026 begins on: December 21