Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
August
Weather in August
Temperature
August is the month when Iwanai's temperatures reach their peak, with averages of 23.3°C (73.9°F) and lows of 16.1°C (61°F).Humidity
In Iwanai, the average relative humidity in August is 87%.Rainfall
August is the month with the most rainfall. Rain falls for 19.1 days and accumulates 105mm (4.13") of precipitation.Snowfall
In Iwanai, snow does not fall in June through September.Daylight
In Iwanai, the average length of the day in August is 13h and 55min.On the first day of the month, sunrise is at 04:29 and sunset at 18:59. On the last day of August, sunrise is at 05:01 and sunset at 18:14 JST.
Sunshine
May and August, with an average of 8.4h of sunshine, are months with the most sunshine.UV index
The months with the highest UV index are July and August, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: A maximum daily UV index of 5 during August morphs into the following directions:
Take precautions - Protection against skin and eye damage is obliged. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the hottest time of year?
What is the average August temperature?
What is the average humidity in August?
What is the rainiest month?
How many days does it rain in August?
When it does not snow?
How many hours of daylight does Iwanai have in August?
What time are sunrise and sunset in August?
What are the months with the most sunshine?
How many hours of sunshine does Iwanai have in August?
When is the highest UV index?
What is the UV index intensity in August?
Average temperature in August
Iwanai, Japan
- Average high temperature in August: 23.3°C
The warmest month (with the highest average high temperature) is August (23.3°C).
The month with the lowest average high temperature is January (-3.8°C).
- Average low temperature in August: 16.1°C
The month with the highest average low temperature is August (16.1°C).
The coldest month (with the lowest average low temperature) is February (-8.9°C).
Average pressure in August
Iwanai, Japan
- Average pressure in August: 1009.5mbar
The month with the highest atmospheric pressure is November (1016.4mbar).
The month with the lowest atmospheric pressure is July (1008.4mbar).
Average wind speed in August
Iwanai, Japan
- Average wind speed in August: 8km/h
The windiest month (with the highest average wind speed) is December (14.5km/h).
The calmest month (with the lowest average wind speed) is August (8km/h).
Average humidity in August
Iwanai, Japan
- Average humidity in August: 87%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is April (79%).
Average rainfall in August
Iwanai, Japan
- Average rainfall in August: 105mm
The wettest month (with the highest rainfall) is August (105mm).
The driest month (with the least rainfall) is April (52mm).
Average rainfall days in August
Iwanai, Japan
- Average rainfall days in August: 19.1 days
The month with the highest number of rainy days is August (19.1 days).
The month with the least rainy days is January (3.4 days).
Average snowfall in August
Iwanai, Japan
- Average snowfall in August: 0mm
The month with the highest snowfall is December (598mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in August
Iwanai, Japan
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (28.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Iwanai, Japan
- Average daylight in August: 13h and 5min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in August: 8h and 2min
The months with the most sunshine are May and August (Average sunshine: 8h and 24min).
The month with the least sunshine is January (Average sunshine: 1h and 24min).
Average sunshine days in August
Iwanai, Japan
- Average sunshine days in August: 9.4 days
The month with the most sunshine days is May (13.3 days).
The month with the least sunshine days is January (2.7 days).
Average UV index in August
Iwanai, Japan
- Average UV index in August: 5
The months with the highest UV index are July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in August
Iwanai, Japan
- Average cloud cover in August: 52
The month with the most cloud cover is January (Cloud cover 86).
The month with the least cloud cover is September (Cloud cover 43).
Average visibility in August
Iwanai, Japan
- Average visibility in August: 7km
The months with the highest visibility are April, May and October (9km).
The months with the lowest visibility are January, February, July, August and December (7km).
