October weather forecast
Tainan, Taiwan

October, like September, is another hot autumn month in Tainan, Taiwan, with an average temperature fluctuating between 23°C (73.4°F) and 30.7°C (87.3°F).
An excellent water temperature of 27.7°C (81.9°F) and only 2.5 rainfall days, with 27.8mm (1.09") of accumulated rainfall, makes October a prime for swimming and other water activities.

Temperature

In Tainan, the average high-temperature in October is almost the same as in September - a still tropical 30.7°C (87.3°F). In Tainan, in October, the average low-temperature is 23°C (73.4°F).

Heat index

The average heat index in October is estimated at a torrid 38.5°C (101.3°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. 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 'apparent temperature', 'real feel', 'felt air temperature', or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like pregnancy, metabolic differences, clothing, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The average relative humidity in October is 75.8%.

Rainfall

In Tainan, during October, the rain falls for 2.5 days and regularly aggregates up to 27.8mm (1.09") of precipitation. In Tainan, during the entire year, the rain falls for 87.4 days and collects up to 1698.2mm (66.86") of precipitation.

Sea temperature

In Tainan, the average seawater temperature in October is 27.7°C (81.9°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

In October, the average length of the day is 11h and 37min.
On the first day of October, sunrise is at 05:50 and sunset at 17:47. On the last day of the month, sunrise is at 06:03 and sunset at 17:22 CST.

Sunshine

The average sunshine in October in Tainan is 6.3h.

UV index

In October, the average daily maximum UV index is 9. A UV Index estimate of 8 to 10 represents a very high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 9 in October transform into the following instructions:
Take special precautions, as unprotected skin can be damaged and can burn quickly. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.