April Weather in Sonoma, United States

Last updated: February 24, 2025

April in Sonoma, United States, presents a delightful blend of warm days and crisp evenings, with maximum temperatures reaching 30°C (86°F) and an average of 14°C (58°F). The weather is generally mild, though temperatures can dip to a refreshing minimum of 3°C (38°F) during the nights. Expect 36 mm (1.4 in) of precipitation spread over five days, enhancing the lush landscapes of this beautiful region. With humidity levels around 80%, the air carries a refreshing moisture that complements the vibrant spring scenery, making it a perfect time to explore the outdoor beauty and cultivate a sense of tranquility.

April Temperature in Sonoma

In April, Sonoma begins to shake off the chill of winter, revealing a fresh vibrancy as temperatures rise noticeably. With a minimum of 3°C (38°F) and a maximum reaching 30°C (86°F), this month marks a transition towards warmer weather, with an average temperature of 14°C (58°F). The trend is clear—each month of spring brings increasing warmth, with April typically boasting the most comfortable days yet, perfect for outdoor activities. As nature bursts into bloom, the inviting temperatures make it an ideal time to explore the charming vineyards and scenic landscapes that define Sonoma.

April Weather in Sonoma: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Sonoma, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec505253586267686867635449
Data source: Temperature data for Sonoma generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

April Precipitation in Sonoma

April in Sonoma marks a significant dip in precipitation, with just 36 mm (1.4 in) of rain accumulating over 5 days. This decline is part of a broader trend, as the region transitions from the wetter months of winter into a drier spring. Following the substantial rainfall of January and February, which saw over 125 mm (4.9 in) each, April’s totals represent a stark reduction. Notably, this shift sets the stage for the dry summer months ahead, as both May and June see even less precipitation, a mere 21 mm (0.8 in) in May and only 1 mm (0.1 in) by June. As Sonoma enjoys the sunnier days of spring, the pattern of diminishing rainfall is clear, heralding the dry season that residents have come to expect.

April Precipitation Trends in Sonoma

The chart displays monthly precipitation patterns in Sonoma, with values for each month alongside April's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec1251278436211101335194
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Sonoma

As April unfolds in Sonoma, the humidity dips to 80%, continuing a slow decline from the wetter months of January (86%) through March (83%). This trend marks a subtle transition into spring, with humidity stabilizing at the same level through May. Following this period, a noticeable decrease is observed as summer approaches, culminating in the driest month of August at 66%. The gradual drop in humidity during these spring months not only enhances the region's vibrant blooms but also sets the stage for the warm, dry conditions that characterize Sonoma's summer landscape.

April Average Humidity in Sonoma

This chart illustrates the average monthly humidity levels in Sonoma, with April's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how April's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%83%80%80%76%70%66%68%72%84%84%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Sonoma

As April rolls into Sonoma, the UV Index spikes to 9, marking a shift into the very high exposure category. This surge from a moderate 3 in January to a significant 7 in March highlights a clear trend of increasing sun intensity as spring progresses. With a burn time of just 15 minutes, it's essential for residents and visitors alike to be proactive about sun protection. This pattern of rising UV levels continues into May, which sees a peak Index of 10, underscoring the importance of being vigilant against UV exposure during these months. As the sun grows stronger, stay informed and make the most of your outdoor activities by checking the Sonoma UV Index.

Maximum UV Index Levels in Sonoma for April

The chart shows the monthly maximum UV Index (UVI) for Sonoma in April, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111109643
Data source: Sonoma April UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

April Sunshine in Sonoma

As spring unfolds in Sonoma, April brings a delightful surge in sunshine, with 296 hours of radiant light, setting a vibrant tone for the season. This marks a significant increase from the 257 hours of March, suggesting a promising transition towards warmer and sunnier days. The steady climb in sunshine hours from January’s modest 141 hours to February's 210 and onward showcases Sonoma’s awakening charm, perfectly complementing its renowned wineries and picturesque landscapes. Looking ahead, May reaches new heights with 357 hours, hinting at the region's allure in the coming months. This trend not only brightens the days but also enhances the outdoor experiences, inviting residents and visitors alike to bask in the warm embrace of Sonoma's April sunshine.

Monthly Sunshine Duration in Sonoma: April Highlighted

The April sunshine duration represents the total number of hours Sonoma experiences direct sunlight during the month of April, excluding cloudy or obstructed periods. This chart compares the sunshine duration of April with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec141h210h257h296h357h384h394h356h314h280h220h185h
Data source: Sonoma April Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Sonoma During April

April heralds a delightful transition in Sonoma's weather, boasting a 70% chance of sunny days. This increase from March's 63% signifies the region's steady shift towards warmer, sunnier conditions as spring unfolds. As temperatures rise and landscapes burst into bloom, the likelihood of sunshine continues to strengthen into May, where it peaks at an impressive 82%. This upward trend not only highlights April as a desirable month for outdoor activities but also sets the stage for a vibrant, sun-soaked season ahead, inviting visitors and locals alike to revel in the beauty of Sonoma's springtime charm.

Percentage of Sunny Days in April in Sonoma

The chart illustrates the percentage of sunny days in Sonoma throughout the year, with April highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Sonoma experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec39%58%63%70%82%78%71%75%73%52%45%32%
Data source: Sonoma April chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Sonoma in April

As spring settles in Sonoma, the length of daylight begins to noticeably extend, with April basking in 13 hours of sunlight—a delightful increase from 11 hours in March. This trend marks a significant shift toward longer days, foreshadowing the 14 hours of daylight that May and June will delightfully bring. As winter fades away, these longer daylight hours fuel outdoor activities and foster a vibrant atmosphere for residents and visitors alike. The gentle increase in light not only brightens the days but also energizes the community, signaling the approach of summer and all its joyful possibilities.

Average Daylight Hours in Sonoma for April

The chart illustrates the variation in daylight duration in Sonoma throughout the year, with April highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 49m10h 46m11h 59m13h 13m14h 16m14h 46m14h 29m13h 34m12h 22m11h 8m10h 4m9h 31m
Data source: Sonoma daylight hours, calculated by summing the hours between sunrise and sunset for each day.

April Winds in Sonoma

In April, Sonoma experiences a gentle breeze with an average wind speed of 2.6 m/s (6 mph), maintaining the same moderate pace as the previous month. This slight stability signals a transition towards the warmer months, as May typically brings an increase in wind speed, reaching 3.2 m/s (7 mph). Notably, April stands out as a calm interlude following the subtle uptick in February and March, which also recorded 2.5 m/s (6 mph) and 2.6 m/s (6 mph), respectively. The overall trend indicates that the spring months tend to enjoy more breezy conditions, suggesting a perfect opportunity for outdoor activities amidst the picturesque landscapes of Sonoma. As summer approaches, winds will vary, but April's consistent gusts lay the groundwork for a season filled with vibrant experiences.

Average April Wind Speed in Sonoma

The chart displays monthly wind speed patterns in Sonoma, with values for each month shown alongside April's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how April's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.12.52.62.6 m/s3.23.02.42.22.12.31.62.2
Data source: Sonoma April wind data, generated using information from the Copernicus Climate Change Service.

How April Weather in Sonoma Compares to Other Months

The weather in Sonoma 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 Sonoma and find detailed weather information for every month.

April and January present contrasting weather patterns. April exhibits a milder temperature range, with a minimum of 3°C (38°F) and an average of 14°C (58°F), peaking at 30°C (86°F). The precipitation is relatively low at 36 mm (1.4 in) over about 5 days, with humidity averaging around 80%. In contrast, January experiences chillier conditions, featuring a minimum temperature of -1°C (31°F) and an average of 10°C (50°F), with a maximum of 24°C (76°F). This month also sees significantly higher rainfall, totaling 125 mm (4.9 in) over roughly 9 days, and slightly higher humidity at 86%. For more insights on January weather, check out Sonoma weather in January.

April weather in Sonoma brings warmer temperatures, with minimums around 3°C (38°F) and average highs peaking at 30°C (86°F). In contrast, February tends to be cooler, starting at -1°C (30°F) and reaching an average maximum of 26°C (79°F). While April experiences less precipitation with 36 mm (1.4 in) over 5 days, February is much wetter, with 127 mm (5.0 in) falling across 8 days. Humidity levels are similar in both months, hovering around 80% in April and 84% in February, creating a somewhat damp atmosphere during winter. For a detailed look at February weather, check Sonoma weather in February.

In comparing the weather of March and April, we can see some notable differences. April has a slightly warmer temperature range, with minimums of 3°C (38°F) and maximums reaching up to 30°C (86°F), while March's temperatures range from a minimum of 1°C (34°F) to a maximum of 27°C (80°F). Despite April being warmer, it experiences less precipitation, recording only 36 mm (1.4 in) over 5 days, compared to March's 84 mm (3.3 in) across 10 days. The humidity in both months is similar, with April at 80% and March slightly higher at 83%. For a more detailed look at March weather, you can visit Sonoma weather in March.

April and May display notable differences in weather patterns. In April, temperatures range from a minimum of 3°C (38°F) to a maximum of 30°C (86°F), with an average temperature of 14°C (58°F). This month experiences 36 mm (1.4 in) of precipitation over about five days, maintaining a humidity level of 80%. In comparison, May begins with slightly warmer conditions, featuring minimum temperatures of 5°C (41°F) and maximums soaring to 34°C (93°F), with an average of 17°C (62°F). Precipitation decreases to 21 mm (0.8 in) over just three days, while humidity remains consistent at 80%. These changes illustrate a shift toward warmer and drier weather as spring progresses. For more detailed insights, check out Sonoma weather in May.

April and June present distinct weather patterns. In April, temperatures can range from a cool 3°C (38°F) to a warm 30°C (86°F), with an average of 14°C (58°F). This month sees about 36 mm (1.4 in) of precipitation over five days, accompanied by a relatively high humidity of 80%. In contrast, June offers a milder climate, with minimum temperatures starting at 10°C (50°F) and maximums reaching up to 37°C (99°F), leading to a comfortable average of 20°C (68°F). Remarkably, June experiences minimal precipitation, only 1 mm (0.1 in), and no rainy days, with slightly lower humidity at 76%. For a closer look at the climate specifics, check out Sonoma weather in June.

April and July present contrasting weather patterns. In April, temperatures range from a cool minimum of 3°C (38°F) to a pleasant maximum of 30°C (86°F), with an average of 14°C (58°F). The month sees about 36 mm (1.4 in) of precipitation over five days, resulting in a relatively humid atmosphere with humidity levels around 80%. In stark contrast, July enjoys warmer temperatures, with a minimum of 11°C (53°F), an average of 20°C (68°F), and a high reaching up to 36°C (96°F). Notably, July experiences no precipitation at all, with zero rainy days and a lower humidity level of 70%. For those interested in detailed information, you can check Sonoma weather in July.

In April, the weather is quite varied, with temperatures ranging from a chilly 3°C (38°F) up to a warm 30°C (86°F), averaging around 14°C (58°F). This month brings a fair amount of precipitation, totaling 36 mm (1.4 in) over approximately five days, contributing to a higher humidity level of 80%. In contrast, August offers consistently warmer conditions with minimum temperatures of 11°C (52°F) and maximums reaching up to 36°C (98°F). The average temperature in August settles around a comfortable 20°C (68°F), and notably, there's no recorded precipitation, leading to a lower humidity of 66%. For more details on the climate during August, check out Sonoma weather in August.

April and September present quite contrasting weather conditions. In April, temperatures range from a chilly 3°C (38°F) at night to a warm 30°C (86°F) in the day, with an average of 14°C (58°F). This month experiences moderate rainfall, averaging 36 mm (1.4 in) over approximately five days, accompanied by a higher humidity level of 80%. In contrast, September features milder nights with minimum temperatures around 9°C (48°F) and significantly warmer days, peaking at 39°C (102°F) with an average of 20°C (68°F). Remarkably, September sees very little precipitation with only 1 mm (0.0 in) recorded and no rainy days, accompanied by a lower humidity of 68%. For more specific details, you may refer to Sonoma weather in September.

April and October present contrasting yet delightful weather patterns. In April, temperatures tend to range from a cool 3°C (38°F) to a warm 30°C (86°F), with an average of 14°C (58°F) and higher humidity levels at 80%. This month also sees around 36 mm (1.4 in) of precipitation over five days, giving it a more variable climate. In comparison, October offers slightly warmer averages, with minimum temperatures of 4°C (40°F) and maximums reaching 34°C (94°F), leading to an average of 17°C (63°F). Notably, October experiences less precipitation, totaling just 33 mm (1.3 in) over only two days and lower humidity at 72%. For more about the specifics of October weather, check out Sonoma weather in October.

April and November in Sonoma exhibit distinct weather characteristics. April sees a wider temperature range, with minimums around 3°C (38°F) and maximums peaking at 30°C (86°F), offering an average temperature of 14°C (58°F). In contrast, November experiences cooler temperatures, with a minimum of 1°C (33°F) and a maximum of 27°C (81°F), resulting in an average of 12°C (55°F). While both months receive a similar amount of rainfall—5 days of precipitation—November has slightly higher precipitation levels at 50 mm (2.0 in), compared to April's 36 mm (1.4 in). Additionally, humidity is slightly higher in November at 84% versus April's 80%. For more specific details about November temperatures, you can check out Sonoma weather in November.

In April, temperatures can vary widely, ranging from a cool 3°C (38°F) at night to a warm 30°C (86°F) during the day, with an average of 14°C (58°F). The month sees about 36 mm (1.4 in) of precipitation over approximately 5 days, and humidity levels hover around 80%. In contrast, December experiences cooler temperatures, with a minimum of 0°C (33°F) and a maximum of 23°C (73°F), averaging at 10°C (50°F). Precipitation increases to 94 mm (3.7 in) over 9 days, along with slightly higher humidity at 84%. For a detailed look at Sonoma's weather during this time, you can visit Sonoma weather in December.

Compare Sonoma's Climate with Cities Worldwide

Conclusion: What to Expect From April Weather in Sonoma

April in Sonoma often brings a delightful shift in weather, showcasing mild temperatures that contrast with the cooler months preceding it. With highs reaching up to 30°C (86°F), the warmth invites outdoor activities, while the average temperature of 14°C (58°F) provides a comfortable backdrop for exploring the area's natural beauty. Although the month does see occasional rain, typically over just five days, the 80% humidity ensures that the landscape remains lush and vibrant. Overall, April serves as a beautiful transition into spring, making it an ideal time for visitors to experience the unique charm of Sonoma. For more detailed insights, check out the Sonoma Climate.