May weather forecast
Vancouver, WA

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The intricate design of the road acting as a bridge over a calm, blue river in Vancouver, Washington
The intricate design of the road acting as a bridge over a calm, blue river in Vancouver, Washington

Weather in May

In May, the weather of Vancouver, Washington transforms almost overnight into that of summer, even though the calendar might suggest otherwise. With the warm climate settling in, there is often an air of cordiality and anticipation that permeates the city's streets. The generally favourable weather allows for outdoor events to be enjoyed without the threat of sudden weather changes. However, caution continues to be exercised given the presence of light showers, as the city records an average rainfall of 1.85" (47mm). Despite this, its limited number of rainy days suggests showers are intermittent rather than continuous.

Temperature

The arrival of May witnesses a small shift in the average high-temperature, moving from a mild 58.1°F (14.5°C) in April to an enjoyable 66.6°F (19.2°C). The anticipated average low-temperature for May in Vancouver, a chilly 43.7°F (6.5°C), shows a substantial deviation from the daytime maximums.

Humidity

In May, the average relative humidity in Vancouver is 73%.

Rainfall

In Vancouver, Washington, in May, it is raining for 13.8 days, with typically 1.85" (47mm) of accumulated precipitation. Throughout the year, in Vancouver, there are 177.1 rainfall days, and 34.29" (871mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall in Vancouver, Washington.

Daylight

In Vancouver, the average length of the day in May is 14h and 56min.
On the first day of May, sunrise is at 5:56 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 5:24 am and sunset at 8:52 pm PDT.

Sunshine

The average sunshine in May in Vancouver, Washington, is 8.8h.

UV index

The average daily maximum UV index in May in Vancouver is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: A typical high UV index of 4 in May suggests the following recommendations:
Ensure safety - Sun damage prevention is strongly urged. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
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Frequently asked questions

What are the temperatures in Vancouver in May?

In Vancouver, 66.6°F (19.2°C) is the average high-temperature and 43.7°F (6.5°C) is the average low-temperature during May.

What is the average humidity in May in Vancouver?

The average relative humidity in May in Vancouver, Washington, is 73%.

How much does it rain in Vancouver in May?

In Vancouver, Washington, in May, during 13.8 rainfall days, 1.85" (47mm) of precipitation is typically accumulated.

When it does not snow in Vancouver?

April through October are months without snowfall in Vancouver, Washington.

What is the average length of the day in May in Vancouver?

In Vancouver, Washington, the average day length in May is 14h and 56min.

When are sunrise and sunset in May in Vancouver?

In May, on the first day of the month, sunrise is at 5:56 am and sunset at 8:18 pm. On the last day of the month, in Vancouver, sunrise is at 5:24 am and sunset at 8:52 pm PDT.

How long on average sun shines in May in Vancouver?

In May, the average sunshine duration is 8.8h.

What is the UV index intensity in May in Vancouver?

The average daily maximum UV index in May in Vancouver is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
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 May
Vancouver, WA

Average temperature in May - Vancouver, WA
  • Average high temperature in May: 66.6°F

The warmest month (with the highest average high temperature) is August (80.6°F).
The month with the lowest average high temperature is December (43.7°F).

  • Average low temperature in May: 43.7°F

The month with the highest average low temperature is August (54°F).
The coldest month (with the lowest average low temperature) is December (34°F).

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Average pressure in May
Vancouver, WA

Average pressure in May - Vancouver, WA
  • Average pressure in May: 30.03"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).

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Average wind speed in May
Vancouver, WA

Average wind speed in May - Vancouver, WA
  • Average wind speed in May: 4.1mph

The windiest month (with the highest average wind speed) is January (5.5mph).
The calmest month (with the lowest average wind speed) is August (3.8mph).

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Average humidity in May
Vancouver, WA

Average humidity in May - Vancouver, WA
  • Average humidity in May: 73%

The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is August (65%).

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Average rainfall in May
Vancouver, WA

Average rainfall in May - Vancouver, WA
  • Average rainfall in May: 1.85"

The wettest month (with the highest rainfall) is December (5.08").
The driest month (with the least rainfall) is July (0.35").

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Average rainfall days in May
Vancouver, WA

Average rainfall days in May - Vancouver, WA
  • Average rainfall days in May: 13.8 days

The month with the highest number of rainy days is March (20.6 days).
The month with the least rainy days is August (4.9 days).

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Average snowfall in May
Vancouver, WA

Average snowfall in May - Vancouver, WA
  • Average snowfall in May: 0"

The month with the highest snowfall is February (1.42").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in May
Vancouver, WA

Average snowfall days in May - Vancouver, WA
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (2.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in May /
Average sunshine in May
Vancouver, WA

Average daylight in May / Average sunshine in May - Vancouver, WA
  • Average daylight in May: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in May: 8h and 5min

The month with the most sunshine is August (Average sunshine: 11h and 0min).
The months with the least sunshine are January and February (Average sunshine: 4h and 6min).

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Average sunshine days in May
Vancouver, WA

Average sunshine days in May - Vancouver, WA
  • Average sunshine days in May: 15.6 days

The month with the most sunshine days is July (24.1 days).
The month with the least sunshine days is February (7.9 days).

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Average UV index in May
Vancouver, WA

Average UV index in May - Vancouver, WA
  • Average UV index in May: 4

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 May
Vancouver, WA

Average cloud cover in May - Vancouver, WA
  • Average cloud cover in May: 46

The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 23).

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Average visibility in May
Vancouver, WA

Average visibility in May - Vancouver, WA
  • Average visibility in May: 5mi

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

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Vancouver, Washington, USA

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