Objectively measurable stimuli are used in psychophysics experiments, such as lights varying in brightness, or sounds varying in loudness. A threshold, or limin, is the point at which a subject can detect a stimulus, or a change in the stimulus.
Cancun: Annual Weather Averages. June is the hottest month in Cancun with an average temperature of 28Â°C (82Â°F) and the coldest is January at 23Â°C (73Â°F) with the most daily sunshine hours at 11 in August. The wettest month is September with an average of 270mm of rain.
Key weather averages for Cancun in February. 1  28. 28Â°C max day temperature. 2  7. 7 hours of sunshine per day. 3  5. 5 days with some rainfall. 4  18. 18Â°C min night temperature. 5  11. 11 hours of daylight per day. 6  M. Moderate heat & humidity. 7  55. 55 mm of monthly rainfall. 8  9. 9 (Very High) UV index. 9  26. 26Â°C sea temperature.