Last updated: February 24, 2025
In April, San Jose experiences a delightful mix of springtime weather, characterized by a maximum temperature reaching up to 31°C (88°F), offering warm days bathed in sunshine. The average temperature settles around a comfortable 13°C (56°F), while the nights can dip to a crisp 3°C (38°F). This month sees 37 mm (1.4 in) of precipitation over the course of just four days, contributing to the lush greenery of the region. With an average humidity level of 78%, the air carries a refreshing quality, making April an inviting time for outdoor activities and exploration in the heart of California.
In April, San Jose experiences a noticeable shift towards warmer temperatures, with minimums rising to 3°C (38°F) and averages reaching 13°C (56°F), signaling the onset of spring. The maximum temperature can soar to a delightful 31°C (88°F), offering residents ample opportunity to enjoy the blooming outdoors. As the month progresses, the warmth intensifies, providing a stark contrast to the cooler winter months. This trend of increasing temperatures continues into May, solidifying April as a transitional period that entices locals to embrace the sunshine while bidding farewell to winter’s chill. It's a time of vibrant growth and outdoor activities, making it a delightful month in the heart of California.
In April, San Jose experiences a significant drop in precipitation, receiving only 37 mm (1.4 in) of rain across just four days. This marked decrease follows a wetter spell in the earlier months of the year, where January and February saw over 130 mm of rain each. As spring unfolds, the city transitions toward drier conditions, which continue into May with a mere 24 mm (0.9 in) of rainfall expected. The contrast is stark when compared to the heavier downpours of winter, showcasing a clear trend of diminishing precipitation as the region moves into the dry summer months ahead. This seasonal shift not only affects the weather patterns but also influences the local ecosystem and water supply in the area.
As spring unfolds in San Jose, April reveals a notable decline in humidity, dipping to 78%. This marks a shift from the wetter months of January and February, which hovered in the low 80s, and aligns with the gradually decreasing trend as the region transitions toward the dry summer. In contrast to the lingering dampness of early spring, May showcases a further decrease to 71%, foreshadowing the drier conditions characteristic of the coming months. This seasonal journey illustrates how San Jose steadily shifts from its more humid beginnings of the year into a warmer, more arid late spring and summer period.
In April, San Jose sees a significant rise in the UV Index, hitting a notable 9, which indicates a very high risk of harm from unprotected sun exposure. With a burn time of just 15 minutes, it's crucial for residents and visitors to take precautions, as this trend signals an escalation in sun intensity compared to earlier months. Following the sharp increase from March's index of 8, the sun's strength in April sets the stage for an even more intense May. As we move from the moderate levels of winter to the more extreme conditions of late spring and summer, understanding these changes becomes vital for safe outdoor activities. Stay informed and protect your skin by visiting San Jose UV Index.
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April brings a delightful surge of sunshine to San Jose, with the city basking in 303 hours of radiant light. This marks a noticeable increase from the 269 hours recorded in March, highlighting the onset of spring as nature awakens and weather warms. The month continues the upward trend of increasing sunlight hours, building towards the summer peak, when residents enjoy an impressive 360 hours in May. As the year progresses, sunlight hours generally rise, peaking in the summer months before gradually tapering off in the fall and winter. This pattern not only encourages outdoor activities but also showcases the vibrant charm of San Jose during this radiant season.
In April, San Jose boasts a 56% chance of sunny weather, mirroring the slightly lower levels seen in March. As spring unfolds, the likelihood of sunshine begins to stabilize, setting the stage for brighter days ahead. This steady probability suggests that while April may still have its share of cloud cover, residents and visitors can expect a delightful mix of sun and mild warmth. As the region transitions into May, the odds increase significantly to 75%, making it clear that brighter days are just around the corner. This upward trend not only heralds the arrival of summer but also invites outdoor activities and the enjoyment of the vibrant Californian landscape.
As April unfolds in San Jose, the city enjoys a delightful increase in daylight, basking in 13 hours of sunshine—a notable jump from 11 hours in March. This upward trend in day length signifies a transition into spring, inviting residents to embrace longer, sunnier days. Following April, daylight continues to extend into May, peaking at an impressive 14 hours, before gradually tapering off through the summer and into fall. This seasonal rhythm not only brightens the days but also enhances the vibrant outdoor culture that San Jose is known for, setting the stage for a rejuvenating springtime experience.
In April, the winds in San Jose experience a slight dip, with an average speed of 1.9 m/s (4 mph), marking it as one of the calmer months of the year. This minor decline follows a consistent trend where the wind speeds generally fluctuate between 1.5 to 2.2 m/s throughout the year. As spring progresses, the breeze transitions from the more invigorating gusts of early winter to gentle whispers, making outdoor activities particularly pleasant. Interestingly, April's winds are milder compared to the more robust breezes often seen in January and February, hinting at the warming trends ahead as the city moves toward the summer months. Overall, while April may offer lighter winds, it lays the groundwork for the vibrant energy that comes with the rise in temperatures later in the season.
The weather in San Jose 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 San Jose and find detailed weather information for every month.
When comparing the weather in April to that of January, it becomes clear that April tends to offer milder temperatures and less rainfall. In April, the minimum temperature is a chilly 3°C (38°F) and the average temperature rises to a pleasant 13°C (56°F), reaching a maximum of 31°C (88°F). In contrast, January starts off colder with a minimum temperature of 0°C (32°F) and an average of 10°C (51°F), peaking at a more moderate 24°C (75°F). Additionally, January experiences significantly more precipitation, with 145 mm (5.7 in) falling over 8 days compared to April's 37 mm (1.4 in) over 4 days. Both months have similar humidity levels, with April at 78% and January slightly higher at 82%. For a closer look at the specifics, you can visit San Jose weather in January.
When comparing the weather in April and February, a noticeable difference emerges in temperature and precipitation. April boasts a wider temperature range, with minimums of 3°C (38°F) and maximums reaching up to 31°C (88°F), while February's temperatures dip lower, with minimums dropping to -1°C (30°F) and maximums peaking at 25°C (77°F). In terms of precipitation, April is relatively drier, experiencing only 37 mm (1.4 in) over 4 days, compared to February's higher total of 133 mm (5.2 in) across 8 days of rain. Additionally, February has a slightly higher humidity level at 84%, compared to April's 78%. For a detailed look at February's weather, you can visit San Jose weather in February.
In comparing the weather of April and March, we see a notable increase in temperature and a decrease in precipitation. April experiences a minimum temperature of 3°C (38°F) and an average of 13°C (56°F), peaking at 31°C (88°F). In contrast, March has a slightly lower minimum temperature of 1°C (34°F) and an average of 11°C (53°F), with a maximum of 26°C (79°F). Additionally, April receives only 37 mm (1.4 in) of precipitation over 4 days, while March sees a higher total of 114 mm (4.5 in) over 12 days. Humidity levels remain relatively close, with April at 78% and March at 82%. For more details, you can check San Jose weather in March.
April and May present a notable shift in weather patterns. In April, temperatures vary from a minimum of 3°C (38°F) to a maximum of 31°C (88°F), with an average temperature of 13°C (56°F). The month experiences a relatively high humidity of 78% and sees precipitation on about 4 days, totaling 37 mm (1.4 in). In contrast, May brings slightly warmer temperatures, with the minimum at 5°C (40°F), an average of 15°C (59°F), and a maximum of 32°C (90°F). Rainfall decreases to 24 mm (0.9 in) over just 2 days, and humidity levels drop to 71%. This transition marks May as a more stable and warmer month, perfect for outdoor activities. For more details, you can check San Jose weather in May.
April and June showcase distinct weather patterns, with April experiencing a broader temperature range, with lows around 3°C (38°F) and highs peaking at 31°C (88°F). The average temperature hovers at 13°C (56°F), accompanied by significant humidity at 78% and a total precipitation of 37 mm (1.4 in) over four days. In contrast, June enjoys milder weather with minimum temperatures rising to 8°C (47°F) and maximums soaring to 37°C (99°F), leading to an average of 18°C (64°F). This month boasts remarkably low precipitation, with just 1 mm recorded and no rainy days, alongside reduced humidity at 64%. For more details, check San Jose weather in June.
April and July exhibit distinct differences in weather patterns. In April, temperatures range from a chilly minimum of 3°C (38°F) to a comfortable maximum of 31°C (88°F), with an average of 13°C (56°F). This month also experiences some rainfall, averaging 37 mm (1.4 in) over about 4 days, and the humidity is relatively high at 78%. In contrast, July boasts much warmer temperatures, with a minimum of 10°C (50°F), an average of 19°C (66°F), and a peak of 34°C (93°F). Notably, July is characterized by dry conditions, with no recorded precipitation and a lower humidity level at 58%. For more detailed insights on weather conditions during this month, check out San Jose weather in July.
April weather presents a cool and variable climate, with temperatures ranging from a minimum of 3°C (38°F) to a maximum of 31°C (88°F) and an average of 13°C (56°F). The month also sees moderate precipitation, with about 37 mm (1.4 in) of rain over four days and a relatively high humidity of 78%. In contrast, August offers much warmer temperatures, with a minimum of 11°C (52°F), an average of 19°C (67°F), and soaring highs reaching up to 39°C (102°F). Notably, August experiences no rainfall, making it a dry month with a lower humidity level of 54%. For more details about August weather in San Jose, you can visit San Jose weather in August.
April and September display markedly different weather patterns, each offering unique characteristics. In April, temperatures fluctuate from a chilly 3°C (38°F) at night to a warm 31°C (88°F) during the day, with an average of 13°C (56°F). This month also sees 37 mm (1.4 in) of precipitation over about four days, along with a humidity level of 78%, contributing to a damp, spring-like atmosphere.
In contrast, September boasts milder temperatures, with a minimum of 7°C (45°F) and a much higher average of 19°C (67°F), peaking at a scorching 41°C (106°F). Remarkably, it experiences negligible precipitation—only 3 mm (0.1 in) and none of it over rainy days—along with a much lower humidity of 55%. This creates a dry, warm climate that is quite different from April's conditions. For more details, check out San Jose weather in September.
April and October present distinct weather patterns, with April experiencing a wider temperature range, from a minimum of 3°C (38°F) to a maximum of 31°C (88°F), while October's temperatures are generally milder, ranging from 5°C (42°F) to 34°C (94°F). Precipitation is more frequent in April, with about 37 mm (1.4 in) over four days, compared to a drier October with only 25 mm (1.0 in) across just one day. Additionally, April has a higher humidity level at 78%, compared to October's more comfortable 62%. For those interested in visiting during October, you can find more detailed information at San Jose weather in October.
April and November share a similar average temperature of 13°C (56°F), but they differ in their extremes and precipitation levels. In April, temperatures can reach a maximum of 31°C (88°F), while November peaks at a lower 28°C (83°F). The spring month tends to be slightly wetter, with rainfall totaling 37 mm (1.4 in) over 4 days, compared to November’s 56 mm (2.2 in) over 5 days. Both months also maintain a consistent humidity level of 78%, creating a comfortable atmosphere. For more detailed information, you can check this link: San Jose weather in November.
In comparing the weather between April and December, we observe notable differences in temperature and precipitation levels. April typically enjoys a wider temperature range, with minimums around 3°C (38°F) and maximums reaching up to 31°C (88°F). In contrast, December tends to be cooler, with minimum temperatures averaging 1°C (34°F) and maximums peaking at 24°C (76°F). Precipitation is also more significant in December, accumulating 116 mm (4.6 in) over approximately 9 days, while April sees only 37 mm (1.4 in) across just 4 rainy days. Humidity levels are somewhat consistent, averaging 78% in April and slightly higher at 80% in December. For a detailed look at December weather, you can visit San Jose weather in December.
April in San Jose brings a vibrant shift from the cooler months, showcasing a mix of mild temperatures and occasional rain. As the city transitions into spring, residents enjoy warm days with temperatures reaching up to a pleasant 31°C, while nights remain refreshingly cool at around 13°C. Though not overly wet, the month does see a few rainy days, totalling about 37 mm, contributing to the lush greenery that blooms throughout the city. With humidity levels at 78%, April sets the stage for a delightful outdoor experience, making it distinct from the drier summer months. For a deeper dive into the weather patterns, check out San Jose Climate.