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Live forecasts update automatically; written guidance last reviewed 20 June 2026 by the Culture Observer weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Cancún stays warm year-round, with average highs of 28–34°C. The best months are December to April, when humidity drops and rain is scarce. The live forecast above gives the current conditions for your trip planning.
When is the best time to visit Cancún?
December to April offers the most reliable weather, with low rainfall and comfortable humidity. This coincides with UK school winter holidays, so book early for best value. May to October brings higher humidity and afternoon showers, though prices drop outside peak season. Hurricane season runs officially from June to November, with September and October the most active months. For a broader picture, check the UK weather hub for comparison with home conditions.
What should you pack for Cancún?
Lightweight clothing, swimwear, sun protection and a reusable water bottle are essential year-round. From December to February, pack a light jacket for cooler evenings. A rain jacket or umbrella is useful from May to October. If you are comparing destinations, Barcelona weather offers a very different Mediterranean pattern if you are undecided.
Is Cancún warm enough for swimming in December?
Yes, sea temperatures average 27°C in December, ideal for swimming and water sports. The cancun weather december is typically dry and sunny, making it one of the best months for a beach holiday.
Does Cancún have a distinct rainy season?
Yes, from May to October, with peak rainfall in September and October. Showers are often brief and followed by sunshine. Checking a cancun weather 14 day forecast or cancun weather forecast 15 day before booking helps you plan around wetter spells.
How reliable are longer-range forecasts for Cancún?
A cancun weather forecast 21 day or cancun weather forecast 30 day gives a useful general trend for temperature and rainfall patterns, but day-to-day accuracy drops beyond two weeks. For the most reliable outlook, check a cancun weather 14 day forecast closer to travel.