Opposite Seasons: When It's Winter in Green Bay, It's Summer in Santiago

Hemispheric Season Reversal

When Green Bay, Wisconsin experiences winter, Santiago, Chile enjoys summer.

The Mechanism

Earth's 23.5° axial tilt causes seasons. When the Northern Hemisphere tilts away from the sun (December solstice), the Southern Hemisphere tilts toward it.

• Green Bay (44.5°N): Winter = Dec-Feb (short days, snow, -10°C to -20°C)
• Santiago (33.5°S): Summer = Dec-Feb (long days, warm, 25°C-30°C)

Key Dates

• December Solstice (~Dec 21): Green Bay = shortest day; Santiago = longest day
• June Solstice (~Jun 21): Green Bay = summer; Santiago = winter
• Equinoxes (Mar/Sept): Both ~12 hrs day/night; transitional seasons

Practical Implication

Travelers can chase endless summer (Green Bay summer → Santiago summer 6 months later) or endless winter. Skiers: Green Bay winter → Chilean Andes (Portillo, Valle Nevado) summer skiing.

Note: The original question mentioned "Greenland Wisconsin"—Greenland, WI is a tiny unincorporated community; Green Bay is the major city. Both are at similar latitudes, so the principle holds.