5 places around the world where it is summer in December

While most of the Northern Hemisphere slips into winter by December, the Southern Hemisphere begins its brightest, warmest, and most energetic season. Summer arrives with long daylight hours, outdoor festivals, lush landscapes, and beaches buzzing with life. For travellers seeking to swap cold winds for sunny skies, these destinations offer everything from world-famous coastlines and coral reefs to vineyards, deserts, and mountain trails at their seasonal best. Here are five incredible countries where December means full summer, and an unforgettable holiday.

December marks the beginning of peak summer across Australia, a season defined by warm days, clear blue skies, and a vibrant outdoor culture. The country’s sheer size means travellers experience multiple summer personalities in one trip, from tropical reefs to temperate cities and sun-soaked deserts. Sydney is a classic summer destination, where the days are warm and sunny, perfect for swimming at Bondi, coastal walks to Coogee, harbour cruises, and open-air festivals. Melbourne is known for its diverse weather, even ranging from pleasant to hot, making it ideal for exploring laneways, art galleries, café culture, and the spectacular Great Ocean Road. Queensland (Gold Coast & Cairns) will be hot and humid, but this is also the season when the Great Barrier Reef is at its most lively, with clear waters for snorkelling and diving. Perth (Western Australia) is very warm and dry, giving visitors a classic Mediterranean fee

In New Zealand, December ushers in early summer, a season that turns the country into one of the world’s most picturesque playgrounds. With mild to warm temperatures and plenty of sunshine, travellers can combine beaches, fjords, vineyards, and mountain trails in one itinerary. Auckland is mild and sunny, perfect for harbour cruises. When in Auckland, explore nearby islands like Waiheke, and enjoy relaxed coastal walks. Queenstown is the adventure capital that offers ideal weather for bungee jumping, skydiving, paragliding, lake cruises, and the region’s legendary hiking trails. Christchurch is warm and pleasant. It’s an excellent base for scenic trips to the Southern Alps or the Banks Peninsula.

December is peak summer in South Africa, offering a thrilling mix of outdoor adventures, sunshine, and scenic diversity. From the cool Atlantic beaches of Cape Town to the warm Indian Ocean waters of Durban, the country experiences some of its finest weather of the year. Cape Town is dry, sunny, and breezy, making it perfect for climbing Table Mountain, visiting Cape Point, exploring vineyards, or relaxing at Clifton and Camps Bay beaches. Durban, however, is usually hot and humid this time of year, with some of the warmest ocean temperatures in the country. This also means great for surfing, swimming, and beachside nightlife. Johannesburg has warm days with occasional afternoon thunderstorms; the city is an excellent cultural and historical hub.

December marks the start of summer across Argentina, bringing warmth to the cities and mild, accessible weather to the southern wilderness. It’s one of the best months to experience the country’s dramatic natural diversity. Buenos Aires is hot, vibrant, and full of energy. December is perfect for exploring historic neighbourhoods, outdoor cafés, weekend markets, and the city’s famous tango performances. If you are planning adventures, Patagonia is best for trekking this season. Trails in El Chaltén, Torres del Paine (nearby Chile), and the southern glaciers open up under clear skies, with long days for hiking and photography. Mendoza has ideal wine-country weather, with warm, dry days and stunning views of the Andes, perfect for vineyard tours, gourmet experiences, and outdoor activities.

Chile transitions into warm, dry summer in December, making its extraordinarily varied geography, from deserts to ice fields, more accessible and enjoyable. Santiago has dry and warm weather that is perfect for exploring the capital’s markets, museums, viewpoints, and nearby vineyards, or taking a day trip to colourful Valparaíso. Atacama Desert – expect hot days but also some of the clearest skies on Earth for stargazing. In Patagonia, December is one of the most favourable months for trekking, especially in Torres del Paine and other southern parks where weather is mild and trails are open.