Chiang Rai in northern Thailand has claimed the top spot as the most affordable winter sun destination. With temperatures hitting 31°C in the coming months, it's perfect for anyone wanting to escape the British winter. South Africa proved equally impressive, with five cities featuring in the top 15. With temperatures reaching 27°C, South Africa offers brilliant weather alongside budget-friendly costs. This comes as a beautiful lake with turquoise water and a fairytale atmosphere has been named a must-visit for winter 2025.