May weather forecast and climate
Oak Harbor, WA

Weather in May

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

Temperature

In Oak Harbor, the average high-temperature marginally rises, from a fresh 52.3°F (11.3°C) in April, to a moderate 59°F (15°C). In May, the average low-temperature is 48°F (8.9°C).

Humidity

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

Rainfall

In Oak Harbor, it is raining for 13.6 days, with typically 1.69" (43mm) of accumulated precipitation. Throughout the year, in Oak Harbor, Washington, there are 183.8 rainfall days, and 24.45" (621mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Oak Harbor.

Ocean temperature

In May, the average ocean temperature in Oak Harbor is 46.4°F (8°C).
Note: Swimming in 46.4°F (8°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

In May, the average length of the day in Oak Harbor is 15.3h.

Sunshine

In May, the average sunshine is 9.8h.

UV index

The average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 4 transform into the following instructions:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the average humidity in May in Oak Harbor?

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

How many days does it rain in May in Oak Harbor?

In Oak Harbor, Washington, in May, during 13.6 rainfall days, 1.69" (43mm) of precipitation is typically accumulated.

When it does not snow in Oak Harbor?

May through October are months without snowfall in Oak Harbor, Washington.

Does it snow in Oak Harbor in May?

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

What is the ocean temperature in May in Oak Harbor?

In May, the average ocean temperature in Oak Harbor, Washington, is 46.4°F (8°C). Swimming in 46.4°F (8°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

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

The average length of the day in May in Oak Harbor, Washington, is 15.3h.

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

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

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

The average daily maximum UV index in May in Oak Harbor is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health from unprotected exposure to the UV radiation.

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"

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

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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%

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").
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).
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: 15.3h

The month with the longest days is June (Average daylight: 16h).
The month with the shortest days is December (Average daylight: 8.4h).

  • Average sunshine in May: 9.8h

The month with the most sunshine is August (Average sunshine: 11h).
The month with the least sunshine is December (Average sunshine: 4.6h).

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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).
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

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

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