August weather forecast
Rumoi, Japan

August

Weather in August

August, the last month of the summer in Rumoi, is also an agreeable month, with an average temperature ranging between min 17.8°C (64°F) and max 22.9°C (73.2°F).

Temperature

August temperatures tend to peak at an average high of 22.9°C (73.2°F) and dip to a low of 17.8°C (64°F).

Humidity

The average relative humidity in August in Rumoi, Japan, is 85%.

Rainfall

August is the month with the most rainfall in Rumoi. Rain falls for 18 days and accumulates 136mm (5.35") of precipitation.

Snowfall

In Rumoi, snow does not fall in June through September.

Daylight

The average length of the day in August is 13h and 59min.
On the first day of August, sunrise is at 04:22 and sunset at 18:57. On the last day of the month, sunrise is at 04:55 and sunset at 18:11 JST.

Sunshine

May and August, with an average of 8.8h of sunshine, are months with the most sunshine in Rumoi, Japan.

UV index

In August, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum daily UV index, 5 in August, converts into the following recommendations:
Undertake precautions - It is suggested to shield oneself from sunburn. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.

Frequently asked questions

What month is the hottest in Rumoi?
Rumoi's August weather, with an average high temperature of 22.9°C (73.2°F) and an average low temperature of 17.8°C (64°F), tends to be the warmest of the year.
What is the temperature in August in Rumoi?
In Rumoi, in August, the average high-temperature is 22.9°C (73.2°F), and the average low-temperature is 17.8°C (64°F).
What is the average humidity in August in Rumoi?
The average relative humidity in August is 85%.
What is the rainiest month in Rumoi?
The month with the most rainfall is August, when the rain falls for 18 days and typically aggregates up to 136mm (5.35") of precipitation.
How many days does it rain in August in Rumoi?
In Rumoi, Japan, in August, it is raining for 18 days, with typically 136mm (5.35") of accumulated precipitation.
When it does not snow in Rumoi?
June through September are months without snowfall in Rumoi, Japan.
What is the average length of the day in August in Rumoi?
The average day length in August in Rumoi, Japan, is 13h and 59min.
When is the sunrise / sunset in August in Rumoi?
In August, on the first day of the month, sunrise is at 04:22 and sunset at 18:57. On the last day of the month, in Rumoi, sunrise is at 04:55 and sunset at 18:11 JST.
What is the month with the most sunshine in Rumoi?
The months with the most sunshine are May and August, with an average of 8.8h of sunshine.
How many hours of sunshine does Rumoi have in August?
In August, the average sunshine duration in Rumoi, Japan, is 8.8h.
What is the UV index reading in August in Rumoi?
In Rumoi, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from exposure to the Sun's UV radiation.
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
Rumoi, Japan
  • Average high temperature in August: 22.9°C

The warmest month (with the highest average high temperature) is August (22.9°C).
The month with the lowest average high temperature is January (-2.3°C).

  • Average low temperature in August: 17.8°C

The month with the highest average low temperature is August (17.8°C).
The coldest month (with the lowest average low temperature) is February (-6.5°C).

Average pressure in August
Rumoi, Japan
  • Average pressure in August: 1009.5mbar

The month with the highest atmospheric pressure is November (1015.4mbar).
The month with the lowest atmospheric pressure is July (1008.4mbar).

Average wind speed in August
Rumoi, Japan
  • Average wind speed in August: 11.6km/h

The windiest month (with the highest average wind speed) is December (22.6km/h).
The calmest month (with the lowest average wind speed) is July (10.3km/h).

Average humidity in August
Rumoi, Japan
  • Average humidity in August: 85%

The month with the highest relative humidity is July (87%).
The month with the lowest relative humidity is October (74%).

Average rainfall in August
Rumoi, Japan
  • Average rainfall in August: 136mm

The wettest month (with the highest rainfall) is August (136mm).
The driest month (with the least rainfall) is February (35mm).

Average rainfall days in August
Rumoi, Japan
  • Average rainfall days in August: 18 days

The month with the highest number of rainy days is August (18 days).
The month with the least rainy days is January (2.3 days).

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

The month with the highest snowfall is December (260mm).
The months with the least snowfall are June, July, August and September (0mm).

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

The month with the highest number of snowfall days is January (21.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Rumoi, Japan
  • Average daylight in August: 14h and 0min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in August: 8h and 5min

The months with the most sunshine are May and August (Average sunshine: 8h and 48min).
The months with the least sunshine are January and December (Average sunshine: 1h and 24min).

Average sunshine days in August
Rumoi, Japan
  • Average sunshine days in August: 11.2 days

The month with the most sunshine days is May (15.9 days).
The month with the least sunshine days is December (5.1 days).

Average UV index in August
Rumoi, Japan
  • Average UV index in August: 5

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).

Average cloud cover in August
Rumoi, Japan
  • Average cloud cover in August: 45

The month with the most cloud cover is January (Cloud cover 88).
The month with the least cloud cover is September (Cloud cover 37).

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

The months with the highest visibility are September and October (10km).
The months with the lowest visibility are January, February and December (8km).

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