June weather forecast
Seattle, WA

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

Weather in June

June ushers in summer in Seattle, with temperatures climbing to the year's warm levels. Sea temperatures begin to rise, tempting beachgoers to the city's inviting shores for some fun in the sun. It is an eventful time, with locals outdoors enjoying the extended daylight and appreciable amount of sunshine. The city’s stunning green spaces come alive, creating a lively atmosphere that attracts tourists and locals alike. June in Seattle is a refreshing and vibrant time, drawing everyone to the outdoors to enjoy the summer offerings.

Temperature

The onset of June in Seattle notes an average high-temperature of an agreeable 69.1°F (20.6°C), subtly shifted from May's 64.8°F (18.2°C). The month of June records an average low-temperature of 48.4°F (9.1°C) in Seattle.

Humidity

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

Rainfall

In Seattle, in June, during 5.4 rainfall days, 0.24" (6mm) of precipitation is typically accumulated. Throughout the year, in Seattle, there are 84.2 rainfall days, and 5.2" (132mm) of precipitation is accumulated.

Snowfall

April through October and December are months without snowfall in Seattle.

Ocean temperature

In Seattle, the average seawater temperature in June is 47.7°F (8.7°C).
Note: One needs to be cautious in 47.7°F (8.7°C) waters. 55.4°F (13°C) is already forbidding, but sub14°F (-10°C) can seriously disrupt your breathing and lead to a frigid shock, considering one's well-being.

Daylight

With an average of 15h and 54min of daylight, June has the longest days of the year in Seattle.
On the first day of June, sunrise is at 5:14 am and sunset at 8:59 pm. On the last day of the month, sunrise is at 5:15 am and sunset at 9:10 pm PDT.

Sunshine

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

UV index

In Seattle, the average daily maximum UV index in June is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 5 during June leads to these instructions:
Ensure safety - Sun damage prevention is strongly urged. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Seattle in June?

In June, the average high-temperature and low-temperature in Seattle, Washington, are 69.1°F (20.6°C) and 48.4°F (9.1°C) respectively.

What is the average humidity in June in Seattle?

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

How many days does it rain in June in Seattle?

In Seattle, Washington, in June, during 5.4 rainfall days, 0.24" (6mm) of precipitation is typically accumulated.

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 June, the average ocean temperature in Seattle, Washington, is 47.7°F (8.7°C). 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.

When are the longest days in Seattle?

The month with the longest days in Seattle, Washington, is June, with an average of 15h and 54min of daylight.

How many hours of daylight does Seattle have in June?

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 5:14 am and sunset at 8:59 pm. On the last day of the month, in Seattle, sunrise is at 5:15 am and sunset at 9:10 pm PDT.

How many hours of sunshine does Seattle have in June?

The average sunshine duration in June in Seattle, Washington, is 9.4h.

How high is the UV index in June in Seattle?

In June, the average daily maximum UV index in Seattle, Washington, is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to the Sun's UV radiation.
Average wind speed gusts
Average humidity
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 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).

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).

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).

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%).

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").

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).

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").

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).

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).

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 5min

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in June: 9h and 2min

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).

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).

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).

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).

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).

Seattle, Washington, USA

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