Cancún or Tulum in January?
On climate data, Cancún comes out ahead overall in January. See the per-criterion details below.
CancúnPhoto: Luka Peternel · CC BY-SA 4.0
TulumPhoto: ironypoisoning · CC BY-SA 2.0Key figures in January
| Criterion | Cancún | Tulum |
|---|---|---|
| Day | 26 °C | 27 °C ★ |
| Night | 22 °C ★ | 21 °C |
| Sea | 27 °C | 27 °C ★ |
| Rainy days | 6 rainy days | 6 rainy days |
| Sun | 5 h/day | 5 h/day ★ |
Winner by travel type
Cancún or Tulum in January: the short answer
In January, Cancún comes out ahead on the overall climate score (Cancún 88/100 vs Tulum 86/100). That is a snapshot of one month, though — which one truly fits depends on what you want from the trip, so the breakdown below goes criterion by criterion.
Across the whole year Cancún averages a climate score of 79/100, Tulum 78/100. Both profiles below are historical monthly averages, not a forecast.
Weather in January, side by side
By day, Cancún sits near 26 °C and Tulum near 27 °C — warmer in Tulum. At night it is roughly 22 °C versus 21 °C.
On rain, Cancún sees about 6 rainy days in January and Tulum about 6. Tulum gets more sunshine (5 vs 5 hours a day).
Sea temperature and swimming
In January the water is about 27 °C at Cancún and 27 °C at Tulum — warmer for swimming at Tulum. Over the year, Cancún is comfortable for swimming (from ~21 °C) in January, February, March, April, May, June, July, August, September, October, November and December, Tulum in January, February, March, April, May, June, July, August, September, October, November and December. Peak sea warmth is August for Cancún and August for Tulum.
Rain and sun across the year
Over a full year Cancún records roughly 90 rainy days and Tulum about 92 — the drier of the two overall is Cancún. At their sunniest, Cancún reaches about 8 hours of sun a day (April) and Tulum about 8 (April). If dependable dry, sunny weather is your top priority, weigh these annual totals alongside the single month above.
Best time to visit each
Climatically, Cancún is at its best in January, February, March and April, while Tulum peaks in January, February, March and April. If your dates are fixed, pick the destination whose strong season overlaps them; if you are flexible, plan around these windows.
Which suits which kind of trip
Based on the January scores for each travel style:
Beach & swimming: Tulum scores higher in January.
City breaks: Cancún scores higher in January.
Active & hiking: Cancún scores higher in January.
Family: Cancún scores higher in January.
Verdict: which should you pick?
There is no single winner — it depends on your month and your priority. For January specifically, use the head-to-head above; over the year, Cancún carries the slightly higher overall climate score. Choose Cancún if its strong months and profile match your plan, Tulum if its do. The month-by-month pages for each destination give you the full picture before you book.