Last updated: February 24, 2025
April in Pasadena presents a delightful tapestry of spring weather, where temperatures reach a maximum of 34°C (94°F), complemented by a refreshing average of 17°C (62°F). The nights can be cool, dipping to a minimum of 6°C (43°F), perfect for enjoying the crisp evening air. During this month, expect minimal rainfall, with only 22 mm (0.9 in) of precipitation across just 2 days, allowing for plenty of sunshine in between. The humidity levels hover around 68%, adding a touch of warmth to the atmosphere while maintaining the city’s vibrant outdoor charm.
In April, Pasadena experiences a delightful warming trend, with temperatures marking a noticeable shift from the cooler months. The minimum temperature rises to 6°C (43°F), while the average reaches a comfortable 17°C (62°F). This month also witnesses a significant spike in the maximum temperature, soaring to an impressive 34°C (94°F). Compared to the preceding months, April introduces a prominent increase in warmth, making it an ideal time for outdoor activities and enjoying the city's vibrant springtime atmosphere. As the days grow longer and sunnier, it's clear that April sets the stage for the warmer months ahead.
In Pasadena, April marks a notable shift in precipitation patterns, with average rainfall dropping to just 22 mm (0.9 in) over a mere 2 days. This is a stark contrast to the preceding months, which typically see heavier rainfall; for instance, March recorded 85 mm (3.4 in) across 10 days. As spring unfolds, the decrease in precipitation heralds sunnier days ahead, paving the way for the warmer dry months of late spring and summer. This trend underscores Pasadena's transition into a drier season, as precipitation becomes progressively scarce, with May following closely with only 16 mm (0.6 in) expected. The rhythm of rainfall reflects the region's Mediterranean climate, characterized by its distinctive wet and dry periods.
In Pasadena, April marks a noticeable shift in humidity, dropping to 68% from the previous month's 75%. This decline is part of a broader trend seen as spring transitions into summer, where humidity steadily decreases to an even drier 57% in May and 52% in June. As the year progresses, the atmosphere becomes increasingly arid, with July experiencing its lowest average of 46%. This gradual reduction in moisture levels not only contributes to Pasadena's warm, sunny climate but also highlights a seasonal pattern that residents come to expect, making April a delightful month as the air begins to dry out.
As April arrives in Pasadena, residents and visitors are greeted by a very high UV Index of 10, signaling an increase in sun intensity that requires caution during outdoor activities. This marks a notable trend from the preceding months, as the UV Index has steadily climbed from a moderate 4 in January to an extreme 11 by May. With a burn time of just 15 minutes, it's essential to protect your skin even on relatively mild spring days. The escalating UV levels highlight the importance of vigilance as summer approaches; knowing when to seek shade or apply sunscreen can make all the difference. For more detailed information on UV exposure trends throughout the year, visit Pasadena UV Index.
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April in Pasadena shines bright with 317 hours of glorious sunshine, marking a delightful transition into spring. As the year progresses, there's a noticeable upward trend in sunshine hours, from 185 hours in January to a vibrant 356 hours in May. This significant increase reflects the region's shift from winter's chill to the warmth of spring, inviting residents and visitors alike to bask in the blooming beauty of the city. With each passing month, the sun's embrace grows stronger, peaking in the summer months, while April serves as a charming prelude to the sun-soaked days ahead. As the days lengthen, Pasadena increasingly becomes a canvas painted with light, setting the stage for the sun-drenched adventures that await.
In April, Pasadena sees a 59% chance of sunny weather, marking a slight dip from the previous months, where sunshine dominates with probabilities exceeding 63% from January to March. This trend hints at a transition as spring unfolds, yet still offers ample opportunities for enjoying the outdoors. While April’s percentage is lower compared to the robust chances of sunshine in May (72%) and the peak summer months, it remains a delightful time to soak up the mild, pleasant weather. As temperatures begin to rise, residents can look forward to the approaching sunny days that define the region.
As April arrives in Pasadena, daylight begins to stretch luxuriously to 13 hours, signaling the heart of spring. Following a gradual increase from 11 hours in March, this notable boost marks the transition towards the longer days of summer. The trend of increasing daylight continues into May, maintaining the 13-hour mark before peaking in June with 14 hours. This steady escalation in sunlight not only encourages outdoor activities but also enhances the city's vibrant atmosphere. With the days growing longer, residents and visitors alike can bask in the beauty of Pasadena's blooming landscapes and the delightful warmth of spring and early summer.
In April, Pasadena experiences a gentle breeze with an average wind speed of 2.1 m/s (5 mph), mirroring the calm conditions of the previous months. As winter transitions to spring, the wind remains relatively consistent, suggesting a serene atmosphere that complements the blooming flowers and vibrant landscapes of the season. Interestingly, the wind speeds begin to taper off heading into late spring and summer, dropping to 1.9 m/s (4 mph) by May and further stabilizing at 1.8 m/s (4 mph) throughout the summer months. This trend indicates a shift from the lively breezes of early spring toward a more tranquil summer, enhancing the warm, sun-soaked days that define Pasadena’s climate. Overall, the April winds encapsulate the beauty of a city in bloom, setting the stage for the relaxed pace of summer ahead.
The weather in Pasadena 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 Pasadena and find detailed weather information for every month.
April weather in Pasadena is generally warmer and drier compared to January. While January experiences minimum temperatures around freezing (0°C), April starts at a milder 6°C and can reach a maximum of 34°C, making it much more conducive for outdoor activities. Precipitation is also significantly lower in April, with only 22 mm falling over about two days, compared to January’s 75 mm over five days. Additionally, humidity levels are slightly lower in April at 68%, while January sees a higher level of 78%. For more details on January weather conditions, you can refer to Pasadena weather in January.
When comparing the weather in April to that of February, a distinct shift in temperature and precipitation patterns emerges. In April, temperatures range from a minimum of 6°C (43°F) to a maximum of 34°C (94°F), with an average temperature of 17°C (62°F). In contrast, February features cooler temperatures, with a minimum of 0°C (31°F), an average of 12°C (54°F), and a maximum of 28°C (83°F). Additionally, April experiences significantly less precipitation, with only 22 mm (0.9 in) over 2 days, while February sees much wetter conditions with 65 mm (2.6 in) over 6 days. The humidity in April is also lower at 68%, compared to February's 82%, contributing to a more comfortable feel as spring approaches. For further details, you can check Pasadena weather in February.
April’s weather in Pasadena offers a noticeable warming trend compared to March, with minimum temperatures rising from 1°C (34°F) to 6°C (43°F) and average temperatures increasing from 13°C (56°F) to 17°C (62°F). The maximum temperature in April can reach up to 34°C (94°F), which is significantly higher than March's peak of 30°C (86°F). Additionally, April sees much less precipitation, with only 22 mm (0.9 in) over just 2 days, while March experiences heavier rainfall of 85 mm (3.4 in) on 10 days. Humidity also drops slightly from 75% in March to 68% in April, further highlighting the transition towards warmer and drier conditions. For more details, you can check Pasadena weather in March.
In April, temperatures start at a minimum of 6°C (43°F) and peak at an average of 17°C (62°F) before reaching a high of 34°C (94°F), with relatively high humidity at 68%. The month experiences around 22 mm (0.9 in) of precipitation over just 2 days. In contrast, May sees a slight increase in average temperature to 18°C (64°F), while maintaining the same maximum of 34°C (94°F). Precipitation decreases to 16 mm (0.6 in) over 3 days, and humidity drops significantly to 57%. For more detailed information, check out Pasadena weather in May.
April typically experiences a wider temperature range, with minimums around 6°C (43°F) and maximums reaching up to 34°C (94°F), making it a month of transition. With an average temperature of 17°C (62°F) and 22 mm (0.9 in) of precipitation over just 2 days, April tends to be more humid at 68%. In contrast, June showcases warmer and more stable weather, featuring a minimum temperature of 11°C (51°F) and a maximum of 40°C (105°F), with a pleasant average of 22°C (71°F). This month is significantly drier, with only 1 mm (0.1 in) of rainfall and 0 days of precipitation, leading to lower humidity levels at 52%. For more details, check out Pasadena weather in June.
In April, the weather begins to warm up, with temperatures ranging from a cool minimum of 6°C (43°F) to a pleasant average of 17°C (62°F) and reaching a maximum of 34°C (94°F) on warmer days. The month sees about 22 mm (0.9 in) of precipitation over two days, accompanied by a higher humidity level of 68%. In contrast, July is typically hotter, with a minimum temperature of 13°C (57°F) and an average of 25°C (77°F). The peak temperatures can soar up to a scorching 43°C (109°F), but it remains largely dry with only 2 mm (0.1 in) of precipitation and no recorded rainy days, resulting in a lower humidity of 46%. The shift from April to July highlights a transition from mild spring conditions to the intense heat of summer. For more details, check Pasadena weather in July.
April and August showcase contrasting weather patterns. In April, temperatures range from a cool minimum of 6°C (43°F) to an average of 17°C (62°F), occasionally peaking at 34°C (94°F). This month experiences light precipitation, with about 22 mm (0.9 in) falling over two days, while humidity levels hover around 68%. In stark contrast, August brings warmer temperatures with a minimum of 15°C (59°F), an average of 25°C (78°F), and highs reaching a scorching 40°C (105°F). Rain is virtually absent in August, with only 2 mm (0.1 in) recorded and no days of precipitation, and humidity drops to a comfortable 39%. For more details on August conditions, check out Pasadena weather in August.
April and September showcase significantly different weather patterns. In April, temperatures range from a cool minimum of 6°C (43°F) to a warm maximum of 34°C (94°F), with an average of 17°C (62°F). The month experiences around 22 mm (0.9 in) of precipitation over about 2 days, coupled with a higher humidity of 68%. Conversely, September introduces a warmer climate with a minimum temperature of 10°C (51°F) and an impressive maximum reaching up to 44°C (112°F), averaging at 23°C (74°F). This month remains drier, with only 4 mm (0.1 in) of rainfall and no rainy days, along with a lower humidity of 48%. For more detailed weather insights, check out Pasadena weather in September.
April and October present contrasting yet mild weather experiences. In April, temperatures range from a minimum of 6°C (43°F) to a maximum of 34°C (94°F), with an average of 17°C (62°F). This month sees a moderate level of precipitation at 22 mm (0.9 in) over two days and relatively higher humidity at 68%. On the other hand, October boasts slightly cooler temperatures, with a minimum of 6°C (44°F), an average of 20°C (68°F), and a warmer maximum of 38°C (101°F). Precipitation is significantly lower at just 9 mm (0.4 in) occurring over a single day, and the humidity drops to 59%. For those interested in Pasadena's October conditions, you can find more details Pasadena weather in October.
April and November share similar precipitation levels, averaging around 22-24 mm and experiencing rain on approximately 2 days. However, April tends to be warmer, with an average temperature of 17°C (62°F) and maximum highs reaching up to 34°C (94°F), while November's average drops slightly to 16°C (61°F) with a maximum of 31°C (89°F). The humidity levels are also comparable, with April at 68% and November slightly higher at 72%. For a detailed look at November's weather, you can check this link: Pasadena weather in November.
April and December exhibit distinct differences in weather patterns. April typically sees a minimum temperature of 6°C (43°F) and an average of 17°C (62°F), peaking at 34°C (94°F), making it a warmer month overall. It has relatively low precipitation, averaging just 22 mm (0.9 in) over about 2 rainy days, and a humidity level of 68%. In contrast, December is cooler, with temperatures ranging from a minimum of 1°C (33°F) to an average of 12°C (53°F), reaching a maximum of 27°C (81°F). This month experiences significantly higher precipitation, totaling 77 mm (3.1 in) across approximately 5 rainy days and a higher humidity level of 76%. For more detailed insights into December weather, visit Pasadena weather in December.
April in Pasadena is a delightful transition into spring, characterized by mild temperatures and low precipitation. With average highs around 17°C (62°F) and a rarely exceeding maximum of 34°C (94°F), the month enjoys pleasant warmth, making it a favorite for outdoor activities. Unlike the chill of winter months, April offers a refreshing increase in humidity at 68%, yet the occasional rain, totaling just 22 mm over two days, ensures the landscape stays vibrant without interrupting your plans. For those looking to compare, April's climate is a stark contrast to the warmer summer months and the cooler driest winter, allowing residents and visitors alike to relish in the comfort of spring. For more insights, explore the complete weather trends at Pasadena Climate.