Mexico
Cancún weather by month
Cancún is warmest in August, with average highs of 31°C, and coolest in January at 26°C. The sea ranges from about 27°C to 29°C, warmest in September.
- WarmestAugust31°C average high
- CoolestJanuary26°C average high
- Warmest seaSeptember29°C on average
- From Dublin≈ 9h 45mdirect, estimated
Cancún through the year
Beach weather (highs of 25°C or more and fewer than seven rainy days) is most likely February to April. September is the wettest month, with rain on about 18 days.
Month by month
| Month | High | Low | Sea | Rainy days | Rain | Sky | Days 25°C+ |
|---|---|---|---|---|---|---|---|
| January | 26° | 22° | 27° | 9 | 74 mm | Often cloudy | 74% |
| February | 27° | 23° | 27° | 6 | 45 mm | Some cloud | 88% |
| March | 28° | 23° | 27° | 4 | 35 mm | Some cloud | 94% |
| April | 29° | 24° | 27° | 4 | 37 mm | Some cloud | 100% |
| May | 30° | 25° | 27° | 9 | 85 mm | Some cloud | 100% |
| June | 30° | 26° | 28° | 16 | 200 mm | Often cloudy | 100% |
| July | 31° | 26° | 29° | 13 | 101 mm | Often cloudy | 100% |
| August | 31° | 26° | 29° | 16 | 139 mm | Often cloudy | 100% |
| September | 30° | 26° | 29° | 18 | 193 mm | Often cloudy | 100% |
| October | 29° | 25° | 29° | 17 | 190 mm | Often cloudy | 100% |
| November | 28° | 23° | 29° | 10 | 101 mm | Often cloudy | 95% |
| December | 27° | 23° | 28° | 9 | 72 mm | Often cloudy | 88% |
Shaded rows: beach weather (February to April). Rainy day = 2 mm or more. Sky = average cloud cover. How we measure
Flying time
Estimated from the distance for a direct flight. Real schedules vary, and many long-haul trips need a connection.
- From Dublin≈ 9h 45m
- From Cork≈ 9h 30m
- From Belfast≈ 9h 45m
- From London≈ 10h 15m
- From Manchester≈ 10h
- From Glasgow≈ 9h 45m
Air: ERA5 reanalysis via Open-Meteo, 2011–2025, for the grid point at 21.16, -86.85 (12 m). Sea: Copernicus Marine analysis via Open-Meteo, 2023–2025. Averages describe past weather, not a forecast.