May weather forecast
Tainan, Taiwan

Onto May, the weather in Tainan takes a decisive turn towards the typical tropical climate. The days get longer and the UV index continues to rise, showcasing the increased presence of sunlight. The standout characteristic of May resides in its heavy rainfall. The city experiences a marked hike in precipitation, receiving an average rainfall of 174mm (6.85"). This increase in rainfall signifies the advent of the Summer Monsoon, setting the tone for the coming months of wet weather.

Temperature

May registers an average high-temperature of a hot 31.3°C (88.3°F), slightly varied from April's 29.1°C (84.4°F). Tainan experiences an average nighttime temperature of 24.1°C (75.4°F) in the month of May.

Heat index

For most parts of May, the heat index is computed to be an extremely hot 41°C (105.8°F). Undertake additional precautions, heat cramps and heat exhaustion could happen. Heatstroke could occur from sustained activity.
Heat index details are generally centered around shaded locations and a mild breeze. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is achieved by amalgamating air temperature with the relative humidity readings. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

In May, the average relative humidity is 78.9%.

Rainfall

In May, the rain falls for 9.2 days. Throughout May, 174mm (6.85") of precipitation is accumulated. Throughout the year, there are 87.4 rainfall days, and 1698mm (66.85") of precipitation is accumulated.

Sea temperature

In May, the average sea temperature in Tainan is 27.4°C (81.3°F).
Note: Swimming, diving, and other water activities in the temperature range of 25°C (77°F) to 29°C (84.2°F) are perceived as very enjoyable and comfortable for prolonged durations.

Daylight

In Tainan, the average length of the day in May is 13h and 15min.
On the first day of May, sunrise is at 05:25 and sunset at 18:26. On the last day of the month, sunrise is at 05:13 and sunset at 18:40 CST.

Sunshine

The average sunshine in May in Tainan is 6h.

UV index

April through August, with an average maximum UV index of 12, are months with the highest UV index. A UV Index value of 11, and more, symbolizes an extreme health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: In May, the maximum UV index of 12 suggests these recommendations:
Practice every precaution of necessity, unprotected skin and eyes might burn in 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. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Regardless of cloud cover, it's recommended to apply generously and reapply often a sunscreen with an SPF of at least 30, especially after swimming or any outdoor activity. Notice! The reflection of water and sand increases the UV radiation significantly.