September weather forecast
Tokushima, Japan

September is a transition period for Tokushima, as it navigates from summer heat towards a crisper climate. Displaying the most abundant rainfall of the year, 308mm (12.13"), September welcomes the beginnings of autumn with surprisingly wet conditions. The change of seasons becomes evident in the slight dip in air and sea temperatures. Despite less daylight, Tokushima exhibits a charm of its own. As October edges closer, the city prepares to turn a leaf towards autumn in full swing.

Temperature

September ushers in a minor alteration in Tokushima's climate, with the average high-temperature moving from August's tropical 31.1°C (88°F) to a warm 27.4°C (81.3°F). Tokushima reports an average nighttime low-temperature of 20.6°C (69.1°F) in September.

Heat index

The heat index value during September is computed to be a tropical 30°C (86°F). Constant activity during exposure could result in a state of weariness and possibly heat cramps.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.

Humidity

The average relative humidity in September in Tokushima is 74%.

Rainfall

September is the month with the most rainfall, with 308mm (12.13") of accumulated precipitation.

Snowfall

In Tokushima, snow does not fall in March through December.

Sea temperature

In Tokushima, in September, the average water temperature is 26.8°C (80.2°F).
Note: Surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as excellent and extremely agreeable for enduring enjoyment in water activities.

Daylight

The average length of the day in September is 12h and 23min.
On the first day of the month, sunrise is at 05:35 and sunset at 18:28. On the last day of September, in Tokushima, sunrise is at 05:55 and sunset at 17:47 JST.

Sunshine

In September, the average sunshine in Tokushima is 5h.