April weather forecast
Portland, OR

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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 is synonymous with the full bloom of Spring. There is a noticeable increase in sunshine hours, making days longer and warmer. A reduced rainfall amount of about 3.11" (79mm) marks the transition from the wet spring toward the dryer summer. The rise in temperature and dwindling rainfall make this time of year perfect for outdoor exploration. The city basks in the gentleness of springtide, providing a captivating view of verdant landscapes.

Temperature

With the onset of April, Portland observes a minor temperature ascent, with the average high-temperature adjusting from March's cool 52.5°F (11.4°C) to a mild 58.6°F (14.8°C). In April, the temperature drops to an average of 39.7°F (4.3°C) at night.

Humidity

The average relative humidity in April is 77%.

Rainfall

In Portland, in April, it is raining for 18.8 days, with typically 3.11" (79mm) of accumulated precipitation. Throughout the year, in Portland, there are 173.1 rainfall days, and 31.18" (792mm) of precipitation is accumulated.

Snowfall

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

Daylight

In April, the average length of the day in Portland is 13h and 34min.
On the first day of April in Portland, sunrise is at 6:49 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 5:58 am and sunset at 8:16 pm PDT.

Sunshine

The average sunshine in April is 7.7h.

UV index

In Portland, the average daily maximum UV index in April is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index, 3 during April, leads to the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
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Frequently asked questions

What are April temperatures in Portland?

Portland in April has an average high-temperature of 58.6°F (14.8°C) and an average low-temperature of 39.7°F (4.3°C).

What is the average humidity in April in Portland?

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

How many days does it rain in April in Portland?

In April, the rain falls for 18.8 days. Throughout April, 3.11" (79mm) of precipitation is accumulated.

When it does not snow in Portland?

April through October are months without snowfall.

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?

In Portland, Oregon, the average day length in April is 13h and 34min.

When is the sunrise / sunset in April in Portland?

In April, on the first day of the month, sunrise is at 6:49 am and sunset at 7:39 pm. On the last day of the month, in Portland, Oregon, sunrise is at 5:58 am and sunset at 8:16 pm PDT.

How many hours of sunshine does Portland have in April?

In Portland, Oregon, the average sunshine duration in April 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 medium hazard to health from unsafe exposure to Sun's UV rays.
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 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 4min

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 April: 7h and 4min

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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Portland, Oregon, USA

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