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 July. 1  32. 32Â°C max day temperature. 2  7. 7 hours of sunshine per day. 3  11. 11 days with some rainfall. 4  23. 23Â°C min night temperature. 5  13. 13 hours of daylight per day. 6  VH. 7  127. 127 mm of monthly rainfall. 8  11. 11+ (Extreme) UV index. 9  28. 28Â°C sea temperature.