August weather forecast
Otaru, Japan

Weather in August

The last month of the summer, August, is a warm month in Otaru, Japan, with an average temperature ranging between max 23°C (73.4°F) and min 16.8°C (62.2°F).

Temperature

With an average high-temperature of 23°C (73.4°F) and an average low-temperature of 16.8°C (62.2°F), August is the warmest month.

Humidity

The average relative humidity in August in Otaru is 87%.

Rainfall

August is the month with the most rainfall. Rain falls for 19.1 days and accumulates 119mm (4.69") of precipitation.

Snowfall

June through September are months without snowfall in Otaru.

Sea temperature

The month with the warmest seawater is August, with an average sea temperature of 21.6°C (70.9°F).
Note: For swimming, a surface water temperature of 21.6°C (70.9°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

Daylight

In August, the average length of the day is 13h and 55min.
On the first day of the month, sunrise is at 04:26 and sunset at 18:58. On the last day of August, sunrise is at 04:58 and sunset at 18:14 JST.

Sunshine

The months with the most sunshine are May and August, with an average of 8.4h of sunshine.

UV index

June through August, with an average maximum UV index of 5, are months with the highest UV index in Otaru. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The daily maximum UV index of 5 in August interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
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FAQ

What is the warmest month in Otaru?

With an average high-temperature of 23°C (73.4°F) and an average low-temperature of 16.8°C (62.2°F), August is the warmest month.

What is the average humidity in August in Otaru?

The average relative humidity in August in Otaru, Japan, is 87%.

What is the rainiest month in Otaru?

August is the month with the most rainfall in Otaru, Japan. Rain falls for 19.1 days and accumulates 119mm (4.69") of precipitation.

How much does it rain in Otaru in August?

In August, in Otaru, Japan, the rain falls for 19.1 days. Throughout August, 119mm (4.69") of precipitation is accumulated.

When it does not snow in Otaru?

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

When is the sea warmest in Otaru?

With an average sea temperature of 21.6°C (70.9°F), August is the month with the warmest seawater in Otaru, Japan.

What is the sea water temperature in August in Otaru?

In Otaru, in August, the average water temperature is 21.6°C (70.9°F). For swimming, a surface water temperature of 21.6°C (70.9°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

What is the average length of the day in August in Otaru?

In Otaru, Japan, the average day length in August is 13h and 55min.

What time are sunrise and sunset in August in Otaru?

On the first day of August, sunrise is at 04:26 and sunset at 18:58. On the last day of the month, sunrise is at 04:58 and sunset at 18:14 JST.

What are the months with the most sunshine in Otaru?

The months with the most sunshine are May and August, with an average of 8.4h of sunshine.

How long on average sun shines in August in Otaru?

In Otaru, Japan, the average sunshine duration in August is 8.4h.

What are the months with the highest UV index in Otaru?

June through August, with an average maximum UV index of 5, are months with the highest UV index in Otaru, Japan.

What is the UV index reading in August in Otaru?

In Otaru, the average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.
Average humidity
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
Otaru, Japan

Average temperature in August - Otaru, Japan
  • Average high temperature in August: 23°C

The warmest month (with the highest average high temperature) is August (23°C).
The month with the lowest average high temperature is January (-3.3°C).

  • Average low temperature in August: 16.8°C

The month with the highest average low temperature is August (16.8°C).
The coldest month (with the lowest average low temperature) is February (-8.2°C).

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Average pressure in August
Otaru, Japan

Average pressure in August - Otaru, Japan
  • Average pressure in August: 1009.5mbar

The month with the highest atmospheric pressure is November (1016.1mbar).
The month with the lowest atmospheric pressure is July (1008.5mbar).

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Average wind speed in August
Otaru, Japan

Average wind speed in August - Otaru, Japan
  • Average wind speed in August: 9.7km/h

The windiest month (with the highest average wind speed) is December (19km/h).
The calmest month (with the lowest average wind speed) is July (9.2km/h).

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Average humidity in August
Otaru, Japan

Average humidity in August - Otaru, Japan
  • Average humidity in August: 87%

The month with the highest relative humidity is July (88%).
The months with the lowest relative humidity are April and October (79%).

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Average rainfall in August
Otaru, Japan

Average rainfall in August - Otaru, Japan
  • Average rainfall in August: 119mm

The wettest month (with the highest rainfall) is August (119mm).
The driest month (with the least rainfall) is April (43mm).

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Average rainfall days in August
Otaru, Japan

Average rainfall days in August - Otaru, Japan
  • Average rainfall days in August: 19.1 days

The month with the highest number of rainy days is July (20.2 days).
The month with the least rainy days is February (2.5 days).

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Average snowfall in August
Otaru, Japan

Average snowfall in August - Otaru, Japan
  • Average snowfall in August: 0mm

The month with the highest snowfall is January (369mm).
The months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in August
Otaru, Japan

Average snowfall days in August - Otaru, Japan
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (26 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in August
Otaru, Japan

Average sea temperature in August - Otaru, Japan
  • Average sea temperature in August: 21.6°C

The best month for swimming (with the highest average sea temperature) is August (21.6°C).
The coldest months (with the lowest average sea temperature) are February and March (5.3°C).

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

Average daylight in August / Average sunshine in August - Otaru, Japan
  • Average daylight in August: 13h and 55min

The month with the longest days is June (Average daylight: 15h and 20min).
The month with the shortest days is December (Average daylight: 9h and 3min).

  • Average sunshine in August: 8h and 24min

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 12min).

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Average sunshine days in August
Otaru, Japan

Average sunshine days in August - Otaru, Japan
  • Average sunshine days in August: 9.9 days

The month with the most sunshine days is May (14.8 days).
The month with the least sunshine days is January (3.1 days).

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Average UV index in August
Otaru, Japan

Average UV index in August - Otaru, Japan
  • Average UV index in August: 5

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).

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Average cloud cover in August
Otaru, Japan

Average cloud cover in August - Otaru, Japan
  • Average cloud cover in August: 49

The month with the most cloud cover is January (Cloud cover 89).
The month with the least cloud cover is September (Cloud cover 42).

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Average visibility in August
Otaru, Japan

Average visibility in August - Otaru, Japan
  • Average visibility in August: 9km

The month with the highest visibility is October (10km).
The month with the lowest visibility is January (7km).

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