August weather forecast
Fukuoka, Japan

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Weather in August

The depiction of August in Fukuoka is often that of a hot summer month. A unique facet of the month is the slightly tapering rainfall after July's deluge. Festivities continue unabated in the height of summer, despite the temperature peaking at 31.6°C (88.9°F). The air is thick with humidity, particularly in the afternoons, when the heat is most oppressive. September's approach heralds a reduction in temperature and humidity levels.

Temperature

The warmest month is August, with an average high-temperature of 31.6°C (88.9°F) and an average low-temperature of 24.5°C (76.1°F).

Heat index

The heat index in August is calculated to be an extremely hot 41°C (105.8°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
It is important to note that the heat index values are for shaded areas and light wind scenarios. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are essentially critical for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

In Fukuoka, the average relative humidity in August is 74%.

Rainfall

In August, the rain falls for 10.4 days. Throughout August, 188mm (7.4") of precipitation is accumulated. Throughout the year, in Fukuoka, there are 128.6 rainfall days, and 1632mm (64.25") of precipitation is accumulated.

Snowfall

April through December are months without snowfall in Fukuoka.

Sea temperature

The month with the warmest seawater in Fukuoka is August, with an average sea temperature of 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 Fukuoka, the average length of the day in August is 13h and 23min.
On the first day of the month, sunrise is at 05:30 and sunset at 19:18. On the last day of August, in Fukuoka, Japan, sunrise is at 05:51 and sunset at 18:45 JST.

Sunshine

August has the most sunshine of the year, with an average of 6.4h of sunshine.

UV index

The average daily maximum UV index in August is 10. A UV Index of 8 to 10 symbolizes a very high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: An average maximum UV index of 10 in August leads to these recommendations:
Taking safety measures is non-negotiable; skin and eyes can be swiftly affected if neglected. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. After every outdoor workout or swim, liberally apply and frequently reapply a broad-spectrum SPF 30+ sunscreen. Notice! Sand and water reflections contribute to a stronger UV exposure.
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Frequently asked questions

What is the hottest time of year in Fukuoka?

During the warmest month in Fukuoka, August, temperatures average a high of 31.6°C (88.9°F) and a low of 24.5°C (76.1°F).

How hot is August in Fukuoka?

The average high-temperature, in August, in Fukuoka, is 31.6°C (88.9°F), while the average low-temperature is 24.5°C (76.1°F). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines relative humidity and air temperature, in August is calculated to be 41°C (105.8°F).

What is the average humidity in August in Fukuoka?

In August, the average relative humidity is 74%.

How many days does it rain in August in Fukuoka?

In August, the rain falls for 10.4 days. Throughout August, 188mm (7.4") of precipitation is accumulated.

When it does not snow in Fukuoka?

In Fukuoka, Japan, snow does not fall in April through December.

When is the sea warmest in Fukuoka?

August is the month with the warmest seawater in Fukuoka, with an average sea temperature of 27.7°C (81.9°F).

What is the water temperature in August in Fukuoka?

In August, the average sea temperature in Fukuoka, Japan, is 27.7°C (81.9°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

How many hours of daylight does Fukuoka have in August?

The average day length in August is 13h and 23min.

When are sunrise and sunset in August in Fukuoka?

On the first day of August in Fukuoka, sunrise is at 05:30 and sunset at 19:18. On the last day of the month, sunrise is at 05:51 and sunset at 18:45 JST.

What month has the most sunshine in Fukuoka?

With an average of 6.4h of sunshine, August has the most sunshine of the year.

How many hours of sunshine does Fukuoka have in August?

The average sunshine duration in August in Fukuoka is 6.4h.

What is the UV index intensity in August in Fukuoka?

The average daily maximum UV index in August in Fukuoka is 10. A UV Index reading of 8 to 10 represents a very high health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average UV index

Average temperature in August
Fukuoka, Japan

Average temperature in August - Fukuoka, Japan
  • Average high temperature in August: 31.6°C

The warmest month (with the highest average high temperature) is August (31.6°C).
The month with the lowest average high temperature is January (9.8°C).

  • Average low temperature in August: 24.5°C

The month with the highest average low temperature is August (24.5°C).
The coldest month (with the lowest average low temperature) is January (3.2°C).

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Average humidity in August
Fukuoka, Japan

Average humidity in August - Fukuoka, Japan
  • Average humidity in August: 74%

The month with the highest relative humidity is June (76%).
The months with the lowest relative humidity are January and February (64%).

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Average rainfall in August
Fukuoka, Japan

Average rainfall in August - Fukuoka, Japan
  • Average rainfall in August: 187.6mm

The wettest month (with the highest rainfall) is June (272.1mm).
The driest month (with the least rainfall) is December (53.8mm).

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Average rainfall days in August
Fukuoka, Japan

Average rainfall days in August - Fukuoka, Japan
  • Average rainfall days in August: 10.4 days

The month with the highest number of rainy days is March (12.9 days).
The month with the least rainy days is October (7.3 days).

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Average snowfall in August
Fukuoka, Japan

Average snowfall in August - Fukuoka, Japan
  • Average snowfall in August: 0mm

The months with the highest snowfall are January and February (20mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).

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Average snowfall days in August
Fukuoka, Japan

Average snowfall days in August - Fukuoka, Japan
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average sea temperature in August
Fukuoka, Japan

Average sea temperature in August - Fukuoka, Japan
  • Average sea temperature in August: 27.7°C

The best month for swimming (with the highest average sea temperature) is August (27.7°C).
The coldest month (with the lowest average sea temperature) is March (14.2°C).

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Average daylight in August /
Average sunshine in August
Fukuoka, Japan

Average daylight in August / Average sunshine in August - Fukuoka, Japan
  • Average daylight in August: 13h and 2min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in August: 6h and 2min

The month with the most sunshine is August (Average sunshine: 6h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).

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Average UV index in August
Fukuoka, Japan

Average UV index in August - Fukuoka, Japan
  • Average UV index in August: 10

The month with the highest UV index is July (UV index 11).
The months with the lowest UV index are January and December (UV index 3).

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Fukuoka, Japan

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