October weather forecast
Tainan, Taiwan

October brings with it a significant change in Tainan's weather. The city begins to dry out and there is a noted drop in rainfall compared to the preceding months. With merely 28mm (1.1") of precipitation and marginally shorter days, October is quite a contrast to the wet and humid preceding months. Temperatures begin to cool, albeit subtly, while the UV index continues its downward trend. This spells the onset of cooler, drier months and the departure from the monsoon season.

Temperature

The transition into October notes an average high-temperature of a still tropical 30.7°C (87.3°F), revealing a mild distinction from the 32°C (89.6°F) in September. In Tainan, in October, the average low-temperature is a moderately hot 23°C (73.4°F).

Heat index

For October, the heat index is computed to be a sweltering 39°C (102.2°F). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.
Given the heat index, its values are aligned with shaded sites and gentle winds. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'feels like' or 'apparent temperature', melds the effects of warmth and moisture to generate a feeling of heat. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
One of the main methods the human body employs to cool down is by perspiring, as this process allows sweat to evaporate and remove excess heat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In Tainan, the average relative humidity in October is 75.8%.

Rainfall

In October, in Tainan, the rain falls for 2.5 days. Throughout October, 28mm (1.1") of precipitation is accumulated. Throughout the year, there are 87.4 rainfall days, and 1698mm (66.85") of precipitation is accumulated.

Sea temperature

In Tainan, in October, the average water temperature is 27.7°C (81.9°F).
Note: For engaging in water activities including swimming and diving, temperatures from 25°C (77°F) to 29°C (84.2°F) are perceived as perfect, providing pleasure for extended durations.

Daylight

In Tainan, the average length of the day in October is 11h and 37min.
On the first day of October in Tainan, sunrise is at 05:50 and sunset at 17:46. On the last day of the month, sunrise is at 06:03 and sunset at 17:21 CST.

Sunshine

The average sunshine in October is 6.3h.

UV index

In Tainan, the average daily maximum UV index in October is 9. A UV Index of 8 to 10 symbolizes a very high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: In October, the maximum UV index of 9 translates into these guidelines:
Ensure you act responsibly. Without precautions, skin and eyes can suffer. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Regardless of the cloudiness of the day, a sunscreen with SPF 30 or more should be applied and reapplied generously, specifically after swimming or outdoor exercise. Stay alert! Reflective properties of sand and water amplify the Sun's UV radiation.