Last updated: February 24, 2025
April in Portland, USA, brings a refreshing mix of spring weather, featuring a maximum temperature of 18°C (65°F) while averaging a cool 6°C (43°F). The month can be chilly, with minimum temperatures dropping to -3°C (27°F). Rain is a significant aspect of Portland’s April, accumulating 149 mm (5.9 in) over approximately 13 rainy days, contributing to the lush greenery that the city is known for. With humidity peaking at 80%, layers and waterproof gear are advisable for those venturing outdoors.
In April, Portland begins to shake off the winter chill, with temperatures showing a noticeable uptick as the month progresses. The minimum temperature hovers around a crisp -3°C (27°F), while the average climbs to 6°C (43°F), culminating in pleasant highs of 18°C (65°F). This shift marks a stark contrast to the depths of winter, where January's lows dipped to -19°C (-2°F), reflecting a broader trend towards milder weather. With flowers starting to bloom and longer days ahead, April serves as a welcoming prelude to the vibrant spring and summer months, signalling that the cold is behind us. The gradual rise in temperatures not only reawakens nature but also encourages outdoor activities and festivities, making it a delightful time to be in the city.
April marks a significant increase in precipitation for Portland, United States, with 149 mm (5.9 in) of rain falling over 13 days. This rise from March’s 91 mm (3.6 in) highlights a transition into the wetter spring season. Notably, April surpasses all previous months in this early part of the year, setting the stage for vibrant blooms and lush landscapes. As the rain nourishes the earth, Portlanders can expect a lush, green city—often referred to as the "City of Roses." This trend continues into May, which, while drier, still holds considerable moisture, suggesting that the Pacific Northwest’s signature rainfall remains a defining characteristic of the region in the spring months.
As spring unfolds in Portland, April ushers in a noticeable shift in humidity levels, settling at 80%—a decline from the chilly, damp months of winter where January's humidity peaks at 86%. This gradual decrease reflects a broader trend, as the city transitions towards drier conditions leading into summer. By May, humidity drops further to 72%, foreshadowing the pleasant, less oppressive air of the upcoming warmer months. Interestingly, while Portland is often associated with wet conditions, April's temperate humidity signifies a refreshing change, making it a delightful time for outdoor activities as the city shakes off the winter blues.
As April rolls into Portland, the UV Index sharply rises to 7, marking a transition into the high exposure category, with a burn time of just 25 minutes. This notable increase signifies the arrival of sunnier days, following the moderate levels seen in earlier months, where January through March boasted indices of 2 to 5 and longer burn times. This trend highlights the importance of sun protection as the weather warms; by May, the UV Index escalates even further to 9. For updated information and tips on how to stay safe under the sun, visit Portland UV Index.
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April in Portland brings a delightful transition as the city emerges from winter's gloom, basking in 244 hours of sunshine. This month showcases a notable dip from March's robust 256 hours, yet it remains a significant improvement over the chillier earlier months. As spring unfolds, the sunshine hours set the stage for the approaching summer, where May kicks off an exhilarating climb to 294 hours. This upward trend continues through the summer months, highlighting Portland's beautiful days ahead. With each passing month, residents savor the increasing warmth and light, making April a pivotal moment in the city's annual solar journey.
April in Portland brings a modest chance of sunny weather, with about 36% likelihood of sunshine gracing the city. This marks a slight dip from March's 61%, which is often considered one of the more favorable months for sun seekers. Interestingly, as spring unfolds, the chances of clear skies remain relatively stable, with May and June hovering around 37% and 40% respectively. Despite sporadic sunny days, Portlanders know to temper their expectations, as the region is notorious for its unpredictable weather. Looking ahead, it’s clear that while April may not be the sunniest month, it certainly sets the stage for the warmer days to come.
As spring unfolds in Portland, the days grow noticeably longer, with April bringing an inviting 13 hours of daylight. This increase marks a significant shift from the dimmer winter months, where January offered just 9 hours of light. Following the welcoming light of March's 11 hours, April serves as a clear bridge into the brighter months ahead. The trend continues upward as May approaches, promising even more sunshine, reaching 14 hours as the days stretch toward summer. This gradual extension of daylight not only enhances outdoor activities but also lifts spirits, embodying the vibrant essence of spring in the Pacific Northwest.
As April graces Portland, it ushers in a slight dip in average wind speed to 4.6 m/s (10 mph), making the blustery conditions of earlier months feel a touch calmer. Following a peak in March at 5.3 m/s (12 mph), the wind settles as spring blossoms, hinting at a seasonal transition where mildness begins to reign. This gentle breeze serves as a precursor to the increasingly tranquil summer months, with May dropping to 4.0 m/s (9 mph), suggesting that Portland is gearing up for the softer gusts typical of the warmer season. Overall, the wind pattern reflects a gradual easing, providing a refreshing yet manageable atmosphere perfect for enjoying the city's vibrant outdoor life.
The weather in Portland changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of April's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Portland and find detailed weather information for every month.
When comparing the weather between January and April, we find notable differences in temperature and precipitation. January is much colder, with temperatures ranging from a minimum of -19°C (-2°F) to a maximum of 12°C (54°F), while April sees milder temperatures that range from -3°C (27°F) to a maximum of 18°C (65°F). Additionally, April experiences significantly more precipitation, with 149 mm (5.9 in) over 13 days, compared to January's 97 mm (3.8 in) over just 9 days. Humidity levels are also slightly higher in January at 86%, compared to April's 80%. For more details on January weather in Portland, you can check Portland weather in January.
April weather is noticeably milder compared to February, with minimum temperatures rising from February’s chilly -17°C (2°F) to a more comfortable -3°C (27°F). Average temperatures in April are also much warmer, reaching 6°C (43°F) compared to February's average of -2°C (29°F). Additionally, while April experiences a higher amount of precipitation at 149 mm (5.9 in) across 13 days, February sees less rainfall, totaling 103 mm (4.1 in) over 10 days. Humidity levels remain relatively high in both months, with April at 80% and February at 84%. For more details on February weather trends, you can check out Portland weather in February.
The weather in April shows a notable improvement over March, with average temperatures rising from 1°C (34°F) in March to 6°C (43°F) in April. The maximum temperature also increases significantly, reaching 18°C (65°F) in April compared to just 13°C (56°F) in March. However, April experiences more precipitation overall, with 149 mm (5.9 in) falling over 13 days, while March sees 91 mm (3.6 in) over 9 days. Humidity remains relatively high in both months, with April at 80% and March slightly higher at 82%. For more detailed insights on the climate, you can visit Portland weather in March.
In comparing the weather of April and May, April tends to be cooler with temperatures ranging from a minimum of -3°C (27°F) to a maximum of 18°C (65°F), while May sees a notable rise with temperatures between 2°C (36°F) and 24°C (76°F). Additionally, April experiences higher precipitation, with 149 mm (5.9 in) over 13 days, compared to May's 94 mm (3.7 in) over just 10 days. Humidity levels also decrease slightly from April's 80% to May's 72%, providing a more comfortable atmosphere. For more detailed insights, you can check Portland weather in May.
April and June present a marked contrast in weather patterns. April's temperatures range from a chilly minimum of -3°C (27°F) to a mild maximum of 18°C (65°F), with an average of 6°C (43°F). The month is relatively wet, with 149 mm (5.9 in) of precipitation spread over 13 days, contributing to a high humidity level of 80%. In contrast, June enjoys warmer temperatures, with a minimum of 8°C (47°F), an average of 17°C (62°F), and a peak of 28°C (83°F). The precipitation is significantly lighter at 80 mm (3.2 in) across 9 days, along with a decreased humidity of 72%. For a detailed look at what to expect, you can check out Portland weather in June.
April and July present contrasting weather conditions, reflecting the transition from early spring to mid-summer. In April, temperatures range from a minimum of -3°C (27°F) to a maximum of 18°C (65°F), with an average of 6°C (43°F). The month is characterized by significant rainfall, totaling 149 mm (5.9 inches) over approximately 13 days, along with high humidity at 80%. In contrast, July offers much warmer temperatures, with a minimum of 13°C (56°F), an average of 20°C (68°F), and a maximum of 28°C (83°F). Precipitation decreases slightly to 123 mm (4.9 inches) across about 12 days, accompanied by lower humidity at 67%. For more detailed information, you can visit Portland weather in July.
April weather is characterized by significant variability, with temperatures ranging from a chilly -3°C (27°F) at night to a mild 18°C (65°F) during the day. This month sees considerable precipitation, averaging 149 mm (5.9 in) over about 13 days, coupled with high humidity levels around 80%. In contrast, August offers a much warmer experience, with nighttime lows of 14°C (57°F) and daytime highs averaging 28°C (82°F). Precipitation is notably lighter, totaling just 75 mm (3.0 in) over 9 days, and humidity levels drop to a more comfortable 66%. For a closer look at August weather specifics, visit Portland weather in August.
April and September present contrasting weather patterns. In April, temperatures range from a chilly minimum of -3°C (27°F) to a mild maximum of 18°C (65°F), with an average of 6°C (43°F). This month sees significant precipitation, totaling 149 mm (5.9 in) over about 13 days, coupled with high humidity levels at 80%. In contrast, September offers a more temperate experience, with minimum temperatures of 8°C (46°F) and maximums reaching 26°C (79°F), resulting in an average of 17°C (63°F). Precipitation is also reduced, at 77 mm (3.0 in) over 8 days, and humidity drops to 71%. For more detailed insights, check out Portland weather in September.
April and October present distinct weather characteristics that reflect the transition between winter and the onset of winter. In April, temperatures range from a chilly minimum of -3°C (27°F) to a more comfortable maximum of 18°C (65°F), with an average temperature of 6°C (43°F). The month is relatively damp with an average precipitation of 149 mm (5.9 in) over 13 days, accompanied by a high humidity level of 80%.
In contrast, October offers a milder climate with minimum temperatures around 1°C (34°F) and maximums reaching up to 21°C (71°F), providing a pleasant average of 12°C (54°F). While it is slightly wetter, with precipitation totaling 163 mm (6.4 in) over the same number of days, the humidity is slightly lower at 78%. For more specific insights and comparisons, you can check Portland weather in October.
April and November exhibit notable differences in weather patterns. April tends to be slightly milder, with average temperatures ranging from a minimum of -3°C (27°F) to a maximum of 18°C (65°F), while November sees lower minimum temperatures, dipping to -12°C (11°F) but reaching similar maximums. Precipitation levels are somewhat comparable; April experiences 149 mm (5.9 in) across 13 days, whereas November has slightly less with 130 mm (5.1 in) over 12 days. Despite these similarities, humidity remains relatively high in both months, with April at 80% and November at 84%. For more information on November-specific conditions, you can visit Portland weather in November.
April and December in Portland offer quite contrasting weather experiences. In April, temperatures range from a chilly -3°C (27°F) at night to a mild 18°C (65°F) during the day, with an average of 6°C (43°F). The month sees about 149 mm (5.9 in) of precipitation over 13 days, contributing to an overall humidity of 80%. In contrast, December brings colder conditions, with temperatures ranging from -18°C (-1°F) to a maximum of 13°C (57°F) and an average of 0°C (33°F). Precipitation is slightly lower at 144 mm (5.7 in) but occurs over fewer days (10 days), with humidity remaining close at 81%. For more detailed information, you can check Portland weather in December.
As April unfolds in Portland, the weather showcases a distinct shift compared to the harsher winter months. Temperatures begin to rise, providing a gentle reprieve from the cold, with crisp mornings transitioning into mild afternoons. However, rainfall remains a prominent feature, as April averages 13 rainy days, contributing to the overall humid atmosphere typical of this transitional month. This mix of cool and wet conditions sets the stage for the vibrant bloom of spring, making it an exceptional time to experience the natural beauty of Portland. For a deeper dive into the year-round climate patterns, visit Portland Climate.