Hanoi Weather in December

December weather

Hanoi feels cool in December, with daytime highs around 21°C and nights near 12°C. The air is humid, and cloudy skies are common, so it can feel grey and a little damp rather than crisp. Rain is limited, which makes walking around the Old Quarter and Hoan Kiem Lake a good fit. You can also spend time at the Temple of Literature or the Vietnam National Museum of Fine Arts without planning your day around showers.

Evenings can feel chilly by the lake, especially if you're sitting outside for dinner. Don't expect much sun, and save long outdoor plans for the warmer part of the day.

Christmas and New Year

Christmas brings lights and crowds around St Joseph's Cathedral. Locals and visitors gather there, and nearby streets can feel busy. New Year's Eve draws people towards Hoan Kiem Lake, where the central location makes it easy to join the celebrations.

Travelling with kids? The cathedral's decorations are fun to see, but the crowd may be tiring. Go earlier in the day for a calmer look.

Crowds and local tips

December is part of Hanoi's popular cool-season stretch, so you'll find more visitors than in the hot, rainy months. Hotels can cost more around Christmas and New Year, though the city doesn't feel equally busy everywhere. If you hate crowds, explore the Old Quarter's smaller lanes in the morning, then visit the lake later.

For a handy local route, walk from St Joseph's Cathedral to Hoan Kiem Lake through the Old Quarter. If the cathedral area is packed, take a break with a bowl of pho in a nearby side street, then return after the rush.