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". Despite this, its limited number of rainy days suggests showers are intermittent rather than continuous.

Temperature

May's arrival coincides with a marginal rise in the average high-temperature, moving from April's 58.1°F to a still refreshing 66.6°F. A noteworthy thermal contrast characterizes Vancouver's May nights, with temperatures averaging at a frosty 43.7°F.

Humidity

In May, the average relative humidity is 73%.

Rainfall

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

Snowfall

In Vancouver, snow does not fall in April through October.

Daylight

In May, the average length of the day in Vancouver is 14h and 56min.
On the first day of May, sunrise is at 5:58 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 5:25 am and sunset at 8:51 pm PDT.

Sunshine

In Vancouver, the average sunshine in May is 8.8h.

UV index

In Vancouver, Washington, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The daily high UV index of 4 during May translates into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Around midday, solar radiation is most harmful; hence, exposure should be limited. Boost your sun resistance with garments that are densely woven yet spacious.
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FAQ

What are May temperatures in Vancouver?

In May, the average high-temperature and low-temperature are 66.6°F and 43.7°F respectively.

What is the average humidity in May in Vancouver?

The average relative humidity in May is 73%.

How many days does it rain in May in Vancouver?

In Vancouver, Washington, during May, the rain falls for 13.8 days and regularly aggregates up to 1.85" of precipitation.

When it does not snow in Vancouver?

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

How many hours of daylight does Vancouver have in May?

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

When are sunrise and sunset in May in Vancouver?

On the first day of May in Vancouver, Washington, sunrise is at 5:58 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 5:25 am and sunset at 8:51 pm PDT.

How many hours of sunshine does Vancouver have in May?

In Vancouver, Washington, the average sunshine duration in May is 8.8h.

What is the UV index intensity in May in Vancouver?

The average daily maximum UV index in May in Vancouver, Washington, is 4. A UV Index of 3 to 5 symbolizes a medium health risk from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average pressure
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 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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