August weather forecast
Hateruma, Japan

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Weather in August

The last month of the summer, August, is another warm month in Hateruma, Japan, with an average temperature varying between 29.3°C (84.7°F) and 28.3°C (82.9°F).

Temperature

In Hateruma, the months of July and August are known for the peak temperatures, reaching an average high of 29.3°C (84.7°F).

Heat index

The heat index for August is calculated to be a very hot 36°C (96.8°F). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
One should consider that heat index numbers are for shaded settings and light wind. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. If heat absorption isn't effectively countered by the body's cooling methods, body temperature surges, hinting at potential problems.

Humidity

In August, the average relative humidity is 81%.

Rainfall

August is the month with the most rainfall in Hateruma. Rain falls for 20.3 days and accumulates 207mm (8.15") of precipitation.

Daylight

The average length of the day in August is 12h and 58min.
On the first day of the month, sunrise is at 06:14 and sunset at 19:28. On the last day of August, in Hateruma, sunrise is at 06:26 and sunset at 19:04 JST.

Sunshine

In Hateruma, Japan, the average sunshine in August is 8.2h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: An average UV index of 7 in August transforms into this advice:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
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Frequently asked questions

What is the hottest time of year in Hateruma?

During July and August, Hateruma experiences its warmest period, with an average high-temperature of 29.3°C (84.7°F).

How hot is August in Hateruma?

In August, in Hateruma, the average high-temperature is 29.3°C (84.7°F), and the average low-temperature is 28.3°C (82.9°F). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 36°C (96.8°F).

What is the average humidity in August in Hateruma?

In August, the average relative humidity in Hateruma, Japan, is 81%.

What is the rainiest month in Hateruma?

The month with the most rainfall in Hateruma is August, when the rain falls for 20.3 days and typically aggregates up to 207mm (8.15") of precipitation.

How many days does it rain in August in Hateruma?

In Hateruma, in August, it is raining for 20.3 days, with typically 207mm (8.15") of accumulated precipitation.

How many hours of daylight does Hateruma have in August?

In August, the average day length in Hateruma is 12h and 58min.

When is the sunrise / sunset in August in Hateruma?

In August, on the first day of the month, sunrise is at 06:14 and sunset at 19:28. On the last day of the month, sunrise is at 06:26 and sunset at 19:04 JST.

How many hours of sunshine does Hateruma have in August?

In August, the average sunshine duration is 8.2h.

What is the month with the highest UV index in Hateruma?

The months with the highest UV index are May through September, with an average maximum UV index of 7.

What is the UV index reading in August in Hateruma?

In August, the average daily maximum UV index in Hateruma is 7. A UV Index of 6 to 7 symbolizes a high health threat from unsafe exposure to Sun's UV rays.

Average temperature in August
Hateruma, Japan

Average temperature in August - Hateruma, Japan
  • Average high temperature in August: 29.3°C

The warmest months (with the highest average high temperature) are July and August (29.3°C).
The month with the lowest average high temperature is January (20.5°C).

  • Average low temperature in August: 28.3°C

The month with the highest average low temperature is July (28.4°C).
The coldest month (with the lowest average low temperature) is January (18.6°C).

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Average pressure in August
Hateruma, Japan

Average pressure in August - Hateruma, Japan
  • Average pressure in August: 1005.6mbar

The month with the highest atmospheric pressure is January (1020.4mbar).
The month with the lowest atmospheric pressure is August (1005.6mbar).

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Average wind speed in August
Hateruma, Japan

Average wind speed in August - Hateruma, Japan
  • Average wind speed in August: 23km/h

The windiest month (with the highest average wind speed) is December (32.7km/h).
The calmest month (with the lowest average wind speed) is May (20.2km/h).

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Average humidity in August
Hateruma, Japan

Average humidity in August - Hateruma, Japan
  • Average humidity in August: 81%

The month with the highest relative humidity is June (85%).
The months with the lowest relative humidity are January and December (77%).

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Average rainfall in August
Hateruma, Japan

Average rainfall in August - Hateruma, Japan
  • Average rainfall in August: 207mm

The wettest month (with the highest rainfall) is August (207mm).
The driest month (with the least rainfall) is February (70mm).

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Average rainfall days in August
Hateruma, Japan

Average rainfall days in August - Hateruma, Japan
  • Average rainfall days in August: 20.3 days

The month with the highest number of rainy days is January (25.3 days).
The month with the least rainy days is July (16.8 days).

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

Average daylight in August / Average sunshine in August - Hateruma, Japan
  • Average daylight in August: 13h and 0min

The month with the longest days is June (Average daylight: 13h and 36min).
The month with the shortest days is December (Average daylight: 10h and 42min).

  • Average sunshine in August: 8h and 1min

The month with the most sunshine is June (Average sunshine: 9h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 12min).

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Average sunshine days in August
Hateruma, Japan

Average sunshine days in August - Hateruma, Japan
  • Average sunshine days in August: 8.9 days

The month with the most sunshine days is July (12.3 days).
The months with the least sunshine days are January and December (3.5 days).

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Average UV index in August
Hateruma, Japan

Average UV index in August - Hateruma, Japan
  • Average UV index in August: 7

The months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is December (UV index 4).

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Average cloud cover in August
Hateruma, Japan

Average cloud cover in August - Hateruma, Japan
  • Average cloud cover in August: 39

The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is July (Cloud cover 35).

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Average visibility in August
Hateruma, Japan

Average visibility in August - Hateruma, Japan
  • Average visibility in August: 10km

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

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Hateruma, Japan

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