May weather forecast
Sai Wan, Hong Kong

May introduces higher temperatures and abundant sunshine in Sai Wan, Hong Kong. Despite the rise in humidity and substantial rainfall, the city retains its allure. The city becomes a vibrant relay of changing weather patterns and ever-increasing temperatures. Native fauna starts to stir and wake, with late afternoons characterized by diverse bird songs. Albeit, this month stands out for its massive leap in rainfall to a staggering 171mm (6.73"), which doesn't dampen the city's beauty.

Temperature

Sai Wan observes a slight ascent in average high-temperatures during May, adjusting from a warm 24.5°C (76.1°F) in April to a still moderately hot 27.7°C (81.9°F). In May, Sai Wan temperatures settle at a low of 24.9°C (76.8°F) during the nights, reflecting a minor change from daytime highs.

Heat index

In May, the heat index is appraised at a hot 32°C (89.6°F). If exposure and ongoing activity persist, they might induce a state of tiredness and heat cramps.
The metrics for the heat index are tailored for both shady environments and light winds. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', quantifies the warmth felt when relative humidity is considered. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.

Humidity

The most humid month is May, with an average relative humidity of 84%.

Rainfall

In Sai Wan, during May, the rain falls for 22.9 days and regularly aggregates up to 171mm (6.73") of precipitation. Throughout the year, there are 224.5 rainfall days, and 1264mm (49.76") of precipitation is accumulated.

Daylight

In Sai Wan, the average length of the day in May is 13h and 13min.
On the first day of the month, sunrise is at 05:51 and sunset at 18:49. On the last day of May, sunrise is at 05:39 and sunset at 19:03 HKT.

Sunshine

The average sunshine in May in Sai Wan is 8.4h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum daily UV index of 7 during May morphs into the following directions:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.