Antarctica's Seasons: Polar Day & Night, Not 6-Month Summer/Winter

Antarctica does not have conventional six-month seasons. Instead, it experiences extreme photoperiods due to Earth's axial tilt (23.5°) and orbit:

• Polar Night (Winter): ~March–September. Sun stays below horizon; weeks to months of continuous darkness. Temperatures plummet (–60°C inland).
• Polar Day (Summer): ~September–March. Sun stays above horizon; 24-hour daylight. Coastal temps near freezing; interior –20°C to –30°C.

Duration varies by latitude: at the South Pole, each lasts ~6 months; on the Antarctic Circle (66.5°S), one day of total darkness/light at solstices; coastal stations have shorter extremes.

This cycle drives unique ecosystems (phytoplankton blooms in summer, emperor penguin winter breeding) and governs research station operations.