June weather forecast
Seattle, WA

Beautiful dusk skyline over the giant skyscrapers of Seattle, Washington
Beautiful dusk skyline over the giant skyscrapers of Seattle, Washington

Weather in June

The first month of the summer, June, is an agreeable month in Seattle, Washington, with temperature in the range of an average low of 48.4°F (9.1°C) and an average high of 69.1°F (20.6°C).

Temperature

In June, the average high-temperature is relatively the same as in May - a pleasant 69.1°F (20.6°C). The average low-temperature, in Seattle, is 48.4°F (9.1°C).

Humidity

In June, the average relative humidity in Seattle is 73%.

Rainfall

In Seattle, Washington, during June, the rain falls for 5.4 days and regularly aggregates up to 0.24" (6mm) of precipitation. Throughout the year, there are 84.2 rainfall days, and 5.2" (132mm) of precipitation is accumulated.

Snowfall

In Seattle, snow does not fall in April through October and December.

Ocean temperature

In Seattle, the average seawater temperature in June is 47.7°F (8.7°C).
Note: Swimming in 47.7°F (8.7°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

June has the longest days of the year in Seattle, with an average of 15h and 55min of daylight.
On the first day of the month, sunrise is at 5:15 am and sunset at 8:59 pm. On the last day of June, in Seattle, sunrise is at 5:15 am and sunset at 9:10 pm PDT.

Sunshine

The average sunshine in June in Seattle is 9.4h.

UV index

In June, the average daily maximum UV index in Seattle is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: In June, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in June in Seattle?

The average high-temperature, in June, in Seattle, is 69.1°F (20.6°C), while the average low-temperature is 48.4°F (9.1°C).

What is the average humidity in June in Seattle?

In Seattle, Washington, the average relative humidity in June is 73%.

How much does it rain in Seattle in June?

In Seattle, during June, the rain falls for 5.4 days and regularly aggregates up to 0.24" (6mm) of precipitation.

When it does not snow in Seattle?

In Seattle, Washington, snow does not fall in April through October and December.

What is the ocean temperature in June in Seattle?

In Seattle, Washington, in June, the average water temperature is 47.7°F (8.7°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

When are the longest days in Seattle?

June has the longest days of the year in Seattle, with an average of 15h and 55min of daylight.

What is the average length of the day in June in Seattle?

The average day length in June in Seattle is 15h and 55min.

When is the sunrise / sunset in June in Seattle?

In June, on the first day of the month, sunrise is at 5:15 am and sunset at 8:59 pm. On the last day of the month, in Seattle, Washington, sunrise is at 5:15 am and sunset at 9:10 pm PDT.

How long on average sun shines in June in Seattle?

In Seattle, the average sunshine duration in June is 9.4h.

What is the UV index intensity in June in Seattle?

The average daily maximum UV index in June in Seattle, Washington, is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from unsafe exposure to Sun's UV rays.
Average wind speed gusts
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in June
Seattle, WA

Average temperature in June - Seattle, WA
  • Average high temperature in June: 69.1°F

The warmest month (with the highest average high temperature) is August (76.3°F).
The month with the lowest average high temperature is December (43.7°F).

  • Average low temperature in June: 48.4°F

The month with the highest average low temperature is August (54°F).
The coldest month (with the lowest average low temperature) is December (35.1°F).

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Average pressure in June
Seattle, WA

Average pressure in June - Seattle, WA
  • Average pressure in June: 30.02"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).

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Average wind speed in June
Seattle, WA

Average wind speed in June - Seattle, WA
  • Average wind speed in June: 3.9mph

The windiest month (with the highest average wind speed) is March (5.3mph).
The calmest months (with the lowest average wind speed) are July and August (3.5mph).

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Average humidity in June
Seattle, WA

Average humidity in June - Seattle, WA
  • Average humidity in June: 73%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is July (69%).

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Average rainfall in June
Seattle, WA

Average rainfall in June - Seattle, WA
  • Average rainfall in June: 0.24"

The wettest month (with the highest rainfall) is December (0.87").
The driest months (with the least rainfall) are July and August (0.12").

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Average rainfall days in June
Seattle, WA

Average rainfall days in June - Seattle, WA
  • Average rainfall days in June: 5.4 days

The month with the highest number of rainy days is November (9.1 days).
The month with the least rainy days is August (2.8 days).

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Average snowfall in June
Seattle, WA

Average snowfall in June - Seattle, WA
  • Average snowfall in June: 0"

The month with the highest snowfall is February (0.71").
The months with the least snowfall are April, May, June, July, August, September, October and December (0").

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Average snowfall days in June
Seattle, WA

Average snowfall days in June - Seattle, WA
  • Average snowfall days in June: 0 days

The month with the highest number of snowfall days is February (1.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average sea temperature in June
Seattle, WA

Average sea temperature in June - Seattle, WA
  • Average sea temperature in June: 47.6°F

The best month for swimming (with the highest average sea temperature) is August (53.5°F).
The coldest month (with the lowest average sea temperature) is February (45.3°F).

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Average daylight in June /
Average sunshine in June
Seattle, WA

Average daylight in June / Average sunshine in June - Seattle, WA
  • Average daylight in June: 15h and 55min

The month with the longest days is June (Average daylight: 15h and 55min).
The month with the shortest days is December (Average daylight: 8h and 31min).

  • Average sunshine in June: 9h and 24min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).

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Average sunshine days in June
Seattle, WA

Average sunshine days in June - Seattle, WA
  • Average sunshine days in June: 21.8 days

The month with the most sunshine days is August (25.9 days).
The month with the least sunshine days is November (16.8 days).

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Average UV index in June
Seattle, WA

Average UV index in June - Seattle, WA
  • Average UV index in June: 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 2).

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Average cloud cover in June
Seattle, WA

Average cloud cover in June - Seattle, WA
  • Average cloud cover in June: 42

The month with the most cloud cover is December (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 25).

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Average visibility in June
Seattle, WA

Average visibility in June - Seattle, WA
  • Average visibility in June: 6mi

The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, November and December (5mi).

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