August weather forecast
Iwanuma, Japan

August

Weather in August

The last month of the summer, August, is another warm month in Iwanuma, Japan, with an average temperature varying between 27.6°C (81.7°F) and 21.5°C (70.7°F).

Temperature

August temperatures tend to peak at an average high of 27.6°C (81.7°F) and dip to a low of 21.5°C (70.7°F).

Heat index

During August, the heat index is calculated to be a tropical 31°C (87.8°F). Long-standing exposure coupled with ongoing activity could result in exhaustion, possibly causing heat cramps.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.

Humidity

In Iwanuma, the average relative humidity in August is 82%.

Rainfall

In August, in Iwanuma, the rain falls for 16.8 days. Throughout August, 76mm (2.99") of precipitation is accumulated. In Iwanuma, during the entire year, the rain falls for 141.6 days and collects up to 753mm (29.65") of precipitation.

Snowfall

In Iwanuma, snow does not fall in May through November.

Daylight

In Iwanuma, the average length of the day in August is 13h and 37min.
On the first day of August in Iwanuma, sunrise is at 04:39 and sunset at 18:46. On the last day of the month, sunrise is at 05:05 and sunset at 18:08 JST.

Sunshine

In Iwanuma, the average sunshine in August is 9.1h.

UV index

July and August, with an average maximum UV index of 6, are months with the highest UV index in Iwanuma. A UV Index estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In August, a regular UV index of 6 translates into these guidelines:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.

Frequently asked questions

What is the hottest time of year in Iwanuma?
In Iwanuma, August records the average highest temperatures, peaking at 27.6°C (81.7°F) and reaching a low of 21.5°C (70.7°F).
What is the temperature in August in Iwanuma?
The average high-temperature, in August, in Iwanuma, is 27.6°C (81.7°F), while the average low-temperature is 21.5°C (70.7°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 31°C (87.8°F).
What is the average humidity in August in Iwanuma?
The average relative humidity in August in Iwanuma, Japan, is 82%.
How much does it rain in Iwanuma in August?
In Iwanuma, in August, it is raining for 16.8 days, with typically 76mm (2.99") of accumulated precipitation.
When it does not snow in Iwanuma?
May through November are months without snowfall.
What is the average length of the day in August in Iwanuma?
In Iwanuma, Japan, the average day length in August is 13h and 37min.
What time are sunrise and sunset in August in Iwanuma?
On the first day of August, sunrise is at 04:39 and sunset at 18:46. On the last day of the month, sunrise is at 05:05 and sunset at 18:08 JST.
How many hours of sunshine does Iwanuma have in August?
In August, the average sunshine duration in Iwanuma is 9.1h.
When is the highest UV index in Iwanuma?
The months with the highest UV index in Iwanuma, Japan, are July and August, with an average maximum UV index of 6.
What is the UV index reading in August in Iwanuma?
In August, the average daily maximum UV index in Iwanuma is 6. A UV Index reading of 6 to 7 represents a high health risk 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 daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in August
Iwanuma, Japan
  • Average high temperature in August: 27.6°C

The warmest month (with the highest average high temperature) is August (27.6°C).
The month with the lowest average high temperature is January (3.6°C).

  • Average low temperature in August: 21.5°C

The month with the highest average low temperature is August (21.5°C).
The coldest month (with the lowest average low temperature) is February (-1.2°C).

Average pressure in August
Iwanuma, Japan
  • Average pressure in August: 1010.2mbar

The month with the highest atmospheric pressure is November (1018.7mbar).
The month with the lowest atmospheric pressure is June (1009.3mbar).

Average wind speed in August
Iwanuma, Japan
  • Average wind speed in August: 9.1km/h

The windiest month (with the highest average wind speed) is January (15.4km/h).
The calmest month (with the lowest average wind speed) is July (8.4km/h).

Average humidity in August
Iwanuma, Japan
  • Average humidity in August: 82%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is April (72%).

Average rainfall in August
Iwanuma, Japan
  • Average rainfall in August: 76mm

The wettest month (with the highest rainfall) is July (118mm).
The driest month (with the least rainfall) is February (22mm).

Average rainfall days in August
Iwanuma, Japan
  • Average rainfall days in August: 16.8 days

The month with the highest number of rainy days is July (19.6 days).
The month with the least rainy days is February (6.1 days).

Average snowfall in August
Iwanuma, Japan
  • Average snowfall in August: 0mm

The month with the highest snowfall is January (67mm).
The months with the least snowfall are May, June, July, August, September, October and November (0mm).

Average snowfall days in August
Iwanuma, Japan
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (7 days).
The months with the least snowfall days are May, June, July, August, September, October and November (0 days).

Average daylight in August /
Average sunshine in August
Iwanuma, Japan
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in August: 9h and 1min

The month with the most sunshine is May (Average sunshine: 9h and 36min).
The months with the least sunshine are January and February (Average sunshine: 5h and 6min).

Average sunshine days in August
Iwanuma, Japan
  • Average sunshine days in August: 12.3 days

The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is July (8.6 days).

Average UV index in August
Iwanuma, Japan
  • Average UV index in August: 6

The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March and December (UV index 2).

Average cloud cover in August
Iwanuma, Japan
  • Average cloud cover in August: 43

The month with the most cloud cover is July (Cloud cover 48).
The month with the least cloud cover is May (Cloud cover 35).

Average visibility in August
Iwanuma, Japan
  • Average visibility in August: 9km

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

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