Short answer: you can only visit Antarctica by ship from about November to March, when the sea ice breaks up enough for boats to pass. There is no single best month. January is best for penguin chicks, February for whales, and November for snow and giant icebergs.
The big picture
- Season: roughly November to March, during the southern summer.
- Weather: around freezing. On the Peninsula, daytime temperatures often sit near 0°C (about 32 to 34°F), with wind and damp making it feel colder.
- Daylight: very long in December and January, up to about 20 hours or more of light a day.
Month by month
November: snow, ice and courtship
- Fresh, untouched snow and the biggest icebergs of the season
- Penguins arrive, court and build nests
- Cold and a bit wilder, with more ice that can block some routes
- Fewer visitors than in the middle of summer
December: warmer and brighter
- Days get long and the weather gets milder
- Penguins are nesting. On the Peninsula, eggs start to hatch in the second half of the month
- Early whales begin to arrive
January: peak summer and penguin chicks
- The warmest weather and longest days
- Fluffy penguin chicks everywhere, and seal pups on the ice
- The busiest month, so book early
- A popular month for the polar plunge and for kayaking
February: whale month
- One of the best chances to see humpback, minke and orca
- Penguin chicks are larger, noisy and starting to enter the water
- Less sea ice, so more places can be reached
- Sunsets and colour come back as nights return
March: quieter and often cheaper
- Fewer ships and often lower prices
- Whales are still around
- Many penguins have already gone to sea, so there is less activity on shore
- Shorter days and colder weather
How to choose
- Want baby penguins? January.
- Want whales? February or early March.
- Want snow and big icebergs? November.
- Want the warmest weather and longest days? December and January.
- Want a lower price and fewer people? November or March.
When should you book?
Popular dates in December and January often sell out early. Some travel companies suggest booking one year or more ahead to get the cabin and date you want.
What about the Arctic?
The Arctic travel season is roughly June to September, when the sea ice pulls back and the sun barely sets. Trips there are about polar bears, walrus, seabirds and wide northern landscapes. See Arctic vs Antarctica for the main differences.
Weather can change fast in any month, so ask the operator what to expect on your dates. Next: what to pack, the wildlife guide and the Antarctica expedition guide. Also see how much an Antarctica cruise costs. Back to the travel section