August weather forecastKoga, Japan

August

Weather in August

August, the last month of the summer in Koga, is a tropical month, with an average temperature fluctuating between 31.8°C (89.2°F) and 23.8°C (74.8°F).

Temperature

In Koga, the average temperatures in August are the highest, with a peak at 31.8°C (89.2°F) and a low of 23.8°C (74.8°F).

Heat index

The heat index value for August is calculated to be an extremely hot 41°C (105.8°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
The metrics for the heat index are tailored for both shady environments and light winds. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', takes into account both air temperature and humidity to illustrate what people actually feel. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

In August, the average relative humidity is 73%.

Rainfall

In August, the rain falls for 18.3 days. Throughout August, 79mm (3.11") of precipitation is accumulated. In Koga, Japan, during the entire year, the rain falls for 165.6 days and collects up to 838mm (32.99") of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

In Koga, the average length of the day in August is 13h and 31min.
On the first day of August, sunrise is at 04:48 and sunset at 18:46. On the last day of the month, sunrise is at 05:12 and sunset at 18:10 JST.

Sunshine

With an average of 10h of sunshine, August has the most sunshine of the year in Koga.

UV index

In Koga, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: A daily maximum UV index of 6 in August translates into the following instructions:
Resist extreme sun exposure. Guarding against solar damage is essential. 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. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.

Frequently asked questions

August stands out as Koga's warmest month, with an average high-temperature of 31.8°C (89.2°F) and a low-temperature of 23.8°C (74.8°F).

The average high-temperature, in August, in Koga, is 31.8°C (89.2°F), while the average low-temperature is 23.8°C (74.8°F). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 41°C (105.8°F).

The average relative humidity in August is 73%.

In Koga, in August, it is raining for 18.3 days, with typically 79mm (3.11") of accumulated precipitation.

In Koga, snow does not fall in April through October.

In August, the average day length is 13h and 31min.

In August, on the first day of the month, sunrise is at 04:48 and sunset at 18:46. On the last day of the month, sunrise is at 05:12 and sunset at 18:10 JST.

August has the most sunshine of the year, with an average of 10h of sunshine.

The average sunshine duration in August is 10h.

The average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Koga, Japan

  • Average high temperature in August: 31.8°C

The warmest month (with the highest average high temperature) is August (31.8°C).
The month with the lowest average high temperature is January (7.6°C).

  • Average low temperature in August: 23.8°C

The month with the highest average low temperature is August (23.8°C).
The coldest month (with the lowest average low temperature) is January (0.8°C).

Average pressure in August
Koga, Japan

  • Average pressure in August: 1010.4mbar

The month with the highest atmospheric pressure is November (1018.4mbar).
The month with the lowest atmospheric pressure is June (1009.3mbar).

Average wind speed in August
Koga, Japan

  • Average wind speed in August: 8.1km/h

The windiest month (with the highest average wind speed) is April (10.2km/h).
The calmest month (with the lowest average wind speed) is November (7.6km/h).

Average humidity in August
Koga, Japan

  • Average humidity in August: 73%

The month with the highest relative humidity is July (76%).
The month with the lowest relative humidity is January (60%).

Average rainfall in August
Koga, Japan

  • Average rainfall in August: 79mm

The wettest month (with the highest rainfall) is October (120mm).
The driest month (with the least rainfall) is December (27mm).

Average rainfall days in August
Koga, Japan

  • Average rainfall days in August: 18.3 days

The month with the highest number of rainy days is July (22.1 days).
The month with the least rainy days is January (5.6 days).

Average snowfall in August
Koga, Japan

  • Average snowfall in August: 0mm

The month with the highest snowfall is February (38mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in August
Koga, Japan

  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

  • Average daylight in August: 13h and 30min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in August: 10h and 0min

The month with the most sunshine is August (Average sunshine: 10h and 0min).
The months with the least sunshine are February and November (Average sunshine: 6h and 12min).

Average sunshine days in August
Koga, Japan

  • Average sunshine days in August: 9.6 days

The month with the most sunshine days is January (23.8 days).
The month with the least sunshine days is July (5.8 days).

Average UV index in August
Koga, Japan

  • Average UV index in August: 6

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).

Average cloud cover in August
Koga, Japan

  • Average cloud cover in August: 38

The month with the most cloud cover is June (Cloud cover 46).
The month with the least cloud cover is January (Cloud cover 25).

Average visibility in August
Koga, Japan

  • Average visibility in August: 9km

The months with the highest visibility are January, February, March, November and December (10km).
The months with the lowest visibility are April, May, June, July, August, September and October (9km).