May weather forecast
Oak Harbor, WA

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Weather in May

The last month of the spring, May, is a mild month in Oak Harbor, Washington, with an average temperature ranging between min 48°F (8.9°C) and max 59°F (15°C).

Temperature

Entering May, Oak Harbor notices a subtle temperature elevation, with the average high-temperature advancing from April's cool 52.3°F (11.3°C) to a mild 59°F (15°C). Throughout May, Oak Harbor registers a consistent average low-temperature of 48°F (8.9°C).

Humidity

The average relative humidity in May in Oak Harbor is 78%.

Rainfall

In May, the rain falls for 13.6 days. Throughout May, 1.69" (43mm) of precipitation is accumulated. In Oak Harbor, during the entire year, the rain falls for 183.8 days and collects up to 24.45" (621mm) of precipitation.

Snowfall

May through October are months without snowfall in Oak Harbor.

Ocean temperature

In Oak Harbor, in May, the average water temperature is 46.4°F (8°C).
Note: Dipping in 46.4°F (8°C) at temperatures less than 50°F (10°C) without proper gear can lead to pronounced cold shock and breathing difficulties.

Daylight

The average length of the day in May is 15h and 14min.
On the first day of May, sunrise is at 5:49 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 5:13 am and sunset at 9:02 pm PDT.

Sunshine

In May, the average sunshine is 9.8h.

UV index

The average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: In May, an average UV index of 4 transforms into the following instructions:
Ensure safety - Sun damage prevention is strongly urged. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
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Frequently asked questions

What are the temperatures in Oak Harbor in May?

In Oak Harbor, in May, the average high-temperature is 59°F (15°C), and the average low-temperature is 48°F (8.9°C).

What is the average humidity in May in Oak Harbor?

In Oak Harbor, Washington, the average relative humidity in May is 78%.

How much does it rain in Oak Harbor in May?

In Oak Harbor, during May, the rain falls for 13.6 days and regularly aggregates up to 1.69" (43mm) of precipitation.

When it does not snow in Oak Harbor?

May through October are months without snowfall in Oak Harbor.

Does it snow in Oak Harbor in May?

In May, in Oak Harbor, it doesn't snow. April is the latest month when it typically snows.

What is the water temperature in May in Oak Harbor?

In Oak Harbor, Washington, in May, the average water temperature is 46.4°F (8°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.

What is the average length of the day in May in Oak Harbor?

In May, the average day length in Oak Harbor, Washington, is 15h and 14min.

When is the sunrise / sunset in May in Oak Harbor?

On the first day of May, sunrise is at 5:49 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 5:13 am and sunset at 9:02 pm PDT.

How long on average sun shines in May in Oak Harbor?

In May, the average sunshine duration in Oak Harbor is 9.8h.

What is the UV index reading in May in Oak Harbor?

The average daily maximum UV index in May in Oak Harbor, Washington, is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to UV radiation.
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
Oak Harbor, WA

Average temperature in May - Oak Harbor, WA
  • Average high temperature in May: 59°F

The warmest month (with the highest average high temperature) is July (66.2°F).
The month with the lowest average high temperature is December (43.7°F).

  • Average low temperature in May: 48°F

The month with the highest average low temperature is August (55.9°F).
The coldest month (with the lowest average low temperature) is February (37.9°F).

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Average pressure in May
Oak Harbor, WA

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

The month with the highest atmospheric pressure is January (30.08"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).

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Average wind speed in May
Oak Harbor, WA

Average wind speed in May - Oak Harbor, WA
  • Average wind speed in May: 5mph

The windiest month (with the highest average wind speed) is November (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

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Average humidity in May
Oak Harbor, WA

Average humidity in May - Oak Harbor, WA
  • Average humidity in May: 78%

The months with the highest relative humidity are January, February and March (81%).
The month with the lowest relative humidity is July (76%).

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Average rainfall in May
Oak Harbor, WA

Average rainfall in May - Oak Harbor, WA
  • Average rainfall in May: 1.69"

The wettest month (with the highest rainfall) is November (3.46").
The driest month (with the least rainfall) is July (0.47").

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Average rainfall days in May
Oak Harbor, WA

Average rainfall days in May - Oak Harbor, WA
  • Average rainfall days in May: 13.6 days

The month with the highest number of rainy days is March (21.1 days).
The month with the least rainy days is August (7.5 days).

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Average snowfall in May
Oak Harbor, WA

Average snowfall in May - Oak Harbor, WA
  • Average snowfall in May: 0"

The month with the highest snowfall is February (3.27").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in May
Oak Harbor, WA

Average snowfall days in May - Oak Harbor, WA
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (3.3 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 May
Oak Harbor, WA

Average sea temperature in May - Oak Harbor, WA
  • Average sea temperature in May: 46.3°F

The best month for swimming (with the highest average sea temperature) is August (53°F).
The coldest month (with the lowest average sea temperature) is February (45°F).

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Average daylight in May /
Average sunshine in May
Oak Harbor, WA

Average daylight in May / Average sunshine in May - Oak Harbor, WA
  • Average daylight in May: 15h and 1min

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in May: 9h and 5min

The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).

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Average sunshine days in May
Oak Harbor, WA

Average sunshine days in May - Oak Harbor, WA
  • Average sunshine days in May: 15.6 days

The month with the most sunshine days is August (21.7 days).
The month with the least sunshine days is March (7.5 days).

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Average UV index in May
Oak Harbor, WA

Average UV index in May - Oak Harbor, WA
  • Average UV index in May: 4

The month with the highest UV index is July (UV index 5).
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
Oak Harbor, WA

Average cloud cover in May - Oak Harbor, WA
  • Average cloud cover in May: 37

The month with the most cloud cover is December (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 22).

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Average visibility in May
Oak Harbor, WA

Average visibility in May - Oak Harbor, WA
  • Average visibility in May: 6mi

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

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Oak Harbor, Washington, USA

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