April weather forecast
Portland, OR

A colorful autumn view of the outline of Portland City, Oregon, USA
A colorful autumn view of the outline of Portland City, Oregon, USA

Weather in April

April in Portland, Oregon, is a moderate spring month, with an average temperature ranging between max 58.6°F (14.8°C) and min 39.7°F (4.3°C).

Temperature

In April, the average high-temperature marginally rises from a fresh 52.5°F (11.4°C) in March to a mild 58.6°F (14.8°C). The average low-temperature, in April, is 39.7°F (4.3°C).

Humidity

The average relative humidity in April is 77%.

Rainfall

In April, in Portland, the rain falls for 18.8 days. Throughout April, 3.11" (79mm) of precipitation is accumulated. In Portland, during the entire year, the rain falls for 173.1 days and collects up to 31.18" (792mm) of precipitation.

Snowfall

April through October are months without snowfall in Portland.

Daylight

In Portland, the average length of the day in April is 13h and 34min.
On the first day of the month, sunrise is at 6:50 am and sunset at 7:38 pm. On the last day of April, in Portland, sunrise is at 5:59 am and sunset at 8:16 pm PDT.

Sunshine

The average sunshine in April is 7.7h.

UV index

In April, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 3 in April interpret into the following advice:
Take precautions - Protection against skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in April in Portland?

The average relative humidity in April in Portland, Oregon, is 77%.

How much does it rain in Portland in April?

In Portland, Oregon, during April, the rain falls for 18.8 days and regularly aggregates up to 3.11" (79mm) of precipitation.

When it does not snow in Portland?

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

Does it snow in Portland in April?

In April, in Portland, it doesn't snow. March is the latest month when it typically snows.

How many hours of daylight does Portland have in April?

The average day length in April in Portland is 13h and 34min.

What time are sunrise and sunset in April in Portland?

In April, on the first day of the month, sunrise is at 6:50 am and sunset at 7:38 pm. On the last day of the month, in Portland, Oregon, sunrise is at 5:59 am and sunset at 8:16 pm PDT.

How long on average sun shines in April in Portland?

The average sunshine duration in April in Portland, Oregon, is 7.7h.

What is the UV index reading in April in Portland?

In April, the average daily maximum UV index in Portland, Oregon, is 3. A UV Index reading 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 sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Portland, OR

Average temperature in April - Portland, OR
  • Average high temperature in April: 58.6°F

The warmest month (with the highest average high temperature) is August (81.5°F).
The month with the lowest average high temperature is December (44.1°F).

  • Average low temperature in April: 39.7°F

The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is December (34.7°F).

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Average pressure in April
Portland, OR

Average pressure in April - Portland, OR
  • Average pressure in April: 30.06"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).

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Average wind speed in April
Portland, OR

Average wind speed in April - Portland, OR
  • Average wind speed in April: 4.8mph

The windiest month (with the highest average wind speed) is January (5.8mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).

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Average humidity in April
Portland, OR

Average humidity in April - Portland, OR
  • Average humidity in April: 77%

The months with the highest relative humidity are January, February and December (83%).
The month with the lowest relative humidity is August (63%).

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Average rainfall in April
Portland, OR

Average rainfall in April - Portland, OR
  • Average rainfall in April: 3.11"

The wettest month (with the highest rainfall) is December (4.53").
The driest month (with the least rainfall) is July (0.31").

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Average rainfall days in April
Portland, OR

Average rainfall days in April - Portland, OR
  • Average rainfall days in April: 18.8 days

The month with the highest number of rainy days is March (20.4 days).
The month with the least rainy days is July (4.9 days).

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Average snowfall in April
Portland, OR

Average snowfall in April - Portland, OR
  • Average snowfall in April: 0"

The month with the highest snowfall is March (1.5").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in April
Portland, OR

Average snowfall days in April - Portland, OR
  • Average snowfall days in April: 0.1 days

The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in April /
Average sunshine in April
Portland, OR

Average daylight in April / Average sunshine in April - Portland, OR
  • Average daylight in April: 13h and 34min

The month with the longest days is June (Average daylight: 15h and 38min).
The month with the shortest days is December (Average daylight: 8h and 46min).

  • Average sunshine in April: 7h and 42min

The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in April
Portland, OR

Average sunshine days in April - Portland, OR
  • Average sunshine days in April: 8.8 days

The months with the most sunshine days are July and August (23.8 days).
The month with the least sunshine days is March (8.3 days).

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Average UV index in April
Portland, OR

Average UV index in April - Portland, OR
  • Average UV index in April: 3

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 April
Portland, OR

Average cloud cover in April - Portland, OR
  • Average cloud cover in April: 53

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 April
Portland, OR

Average visibility in April - Portland, OR
  • Average visibility in April: 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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