April weather forecast
Oak Harbor, WA

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Weather in April

April in Oak Harbor, Washington, is a fresh spring month, with an average temperature ranging between min 43.7°F (6.5°C) and max 52.3°F (11.3°C).

Temperature

On the advent of April, Oak Harbor's average high-temperature exhibits a minor adjustment to a cool 52.3°F (11.3°C) from March's 48.6°F (9.2°C). Oak Harbor experiences an average nighttime temperature of 43.7°F (6.5°C) in April, reflecting a minor difference from the day's peak.

Humidity

The average relative humidity in April in Oak Harbor is 79%.

Rainfall

In April, the rain falls for 17.8 days. Throughout April, 2.01" (51mm) of precipitation is accumulated. Throughout the year, there are 183.8 rainfall days, and 24.45" (621mm) of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall. April is the last month it regularly snows. During 0.2 snowfall days, in April, Oak Harbor aggregates 0.04" (1mm) of snow. Throughout the year, there are 9.6 snowfall days, and 5.63" (143mm) of snow is accumulated.

Ocean temperature

January, February and April, with an average ocean temperature of 45.1°F (7.3°C), are months with the coldest seawater in Oak Harbor.
Note: To swim in 45.1°F (7.3°C) at less than 50°F (10°C), ensure you're well-protected. Without it, be prepared for a sudden jolt of cold and breathing issues. Remember, even 55.4°F (13°C) is not welcoming.

Daylight

In April, the average length of the day in Oak Harbor, Washington, is 13h and 43min.
On the first day of April in Oak Harbor, sunrise is at 6:46 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 5:51 am and sunset at 8:23 pm PDT.

Sunshine

In Oak Harbor, the average sunshine in April is 8.5h.

UV index

The average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum UV index of 3 during April translates into these guidelines:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
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Frequently asked questions

What are April temperatures in Oak Harbor?

The average high-temperature, in April, in Oak Harbor, is 52.3°F (11.3°C), while the average low-temperature is 43.7°F (6.5°C).

What is the average humidity in April in Oak Harbor?

In Oak Harbor, the average relative humidity in April is 79%.

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

In April, in Oak Harbor, Washington, the rain falls for 17.8 days. Throughout April, 2.01" (51mm) of precipitation is accumulated.

What is the last month it snows in Oak Harbor?

April is the last month it regularly snows in Oak Harbor. During 0.2 snowfall days, in April, Oak Harbor aggregates 0.04" (1mm) of snow.

What months are the ocean coldest in Oak Harbor?

January, February and April, with an average ocean temperature of 45.1°F (7.3°C), are months with the coldest seawater in Oak Harbor.

How cold is the water in April in Oak Harbor?

In April, the average ocean temperature is 45.1°F (7.3°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 April in Oak Harbor?

The average day length in April in Oak Harbor, Washington, is 13h and 43min.

When are sunrise and sunset in April in Oak Harbor?

In April, on the first day of the month, sunrise is at 6:46 am and sunset at 7:41 pm. On the last day of the month, in Oak Harbor, Washington, sunrise is at 5:51 am and sunset at 8:23 pm PDT.

How many hours of sunshine does Oak Harbor have in April?

The average sunshine duration in April in Oak Harbor is 8.5h.

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

The average daily maximum UV index in April in Oak Harbor, Washington, is 3. A UV Index estimate of 3 to 5 represents a medium hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Oak Harbor, WA

Average temperature in April - Oak Harbor, WA
  • Average high temperature in April: 52.3°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 April: 43.7°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 April
Oak Harbor, WA

Average pressure in April - Oak Harbor, WA
  • Average pressure in April: 30.04"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 April
Oak Harbor, WA

Average wind speed in April - Oak Harbor, WA
  • Average wind speed in April: 6.5mph

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 April
Oak Harbor, WA

Average humidity in April - Oak Harbor, WA
  • Average humidity in April: 79%

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 April
Oak Harbor, WA

Average rainfall in April - Oak Harbor, WA
  • Average rainfall in April: 2.01"

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 April
Oak Harbor, WA

Average rainfall days in April - Oak Harbor, WA
  • Average rainfall days in April: 17.8 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 April
Oak Harbor, WA

Average snowfall in April - Oak Harbor, WA
  • Average snowfall in April: 0.04"

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 April
Oak Harbor, WA

Average snowfall days in April - Oak Harbor, WA
  • Average snowfall days in April: 0.2 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 April
Oak Harbor, WA

Average sea temperature in April - Oak Harbor, WA
  • Average sea temperature in April: 45.1°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 April /
Average sunshine in April
Oak Harbor, WA

Average daylight in April / Average sunshine in April - Oak Harbor, WA
  • Average daylight in April: 13h and 4min

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 April: 8h and 3min

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 April
Oak Harbor, WA

Average sunshine days in April - Oak Harbor, WA
  • Average sunshine days in April: 9.7 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 April
Oak Harbor, WA

Average UV index in April - Oak Harbor, WA
  • Average UV index in April: 3

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 April
Oak Harbor, WA

Average cloud cover in April - Oak Harbor, WA
  • Average cloud cover in April: 46

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 April
Oak Harbor, WA

Average visibility in April - Oak Harbor, WA
  • Average visibility in April: 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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