May weather forecast
Macau, China

May marks the onset of the pre-summer period in Macau, China. It sees a steady rise in temperatures, signaling the approaching summer days. Simultaneously, the rainfall shoots up to record one of its highest figures of the year. With this, the weather transforms from a mild spring-like climate to a warmer, moist condition that presages the forthcoming summer months.

Temperature

Macau's May weather indicates a minor increase in high-temperatures, edging from April's 24.7°C (76.5°F) to a still warm 28.4°C (83.1°F). Macau's nocturnal average in May closely mirrors its daytime temperatures, settling at a still moderately hot 23.6°C (74.5°F).

Heat index

For May, the heat index is computed to be a hot 34°C (93.2°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'real feel' or 'apparent temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.

Humidity

In May, the average relative humidity in Macau is 84.4%.

Rainfall

In Macau, in May, it is raining for 13.9 days, with typically 311mm (12.24") of accumulated precipitation. In Macau, during the entire year, the rain falls for 130.2 days and collects up to 2058mm (81.02") of precipitation.

Sea temperature

In Macau, China, in May, the average water temperature is 26.8°C (80.2°F).
Note: Water temperature ranging from 25°C (77°F) to 29°C (84.2°F) is seen as very warm and delightful by everyone. During these temperatures, water activities become enjoyable, without causing discomfort for extended periods.

Daylight

In Macau, China, the average length of the day in May is 13h and 12min.
On the first day of May, sunrise is at 05:53 and sunset at 18:52. On the last day of the month, sunrise is at 05:41 and sunset at 19:05 CST.

Sunshine

In May, the average sunshine in Macau is 4.4h.

UV index

The months with the highest UV index in Macau are April through August, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an extreme threat to health from exposure to the Sun's UV radiation for average individuals.
Note: A maximum high UV index of 12 in May translates into the following recommendations:
Adopt all essential precautions. Preventing sun harm is crucial. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Sunscreen with a sun protection factor of no less than 30 should be used liberally and reapplied frequently on overcast days, including after every swim or outdoor activity. Be on guard! The reflective nature of sand and water boosts UV exposure.