Last updated: February 24, 2025
May in Oakland, United States, ushers in a delightful transition to warmer weather, with maximum temperatures soaring to 32°C (90°F) and an average of 15°C (60°F). Residents and visitors alike can enjoy the mild climate, punctuated by a minimal 18 mm (0.7 in) of rainfall over just 2 days. Despite the brief showers, the humidity level rests at a comfortable 71%, creating a pleasant atmosphere ideal for outdoor activities and leisurely strolls. Whether basking in the sun or enjoying the refreshing breeze, May in Oakland is a month of vibrancy and life.
In May, Oakland experiences a delightful transition into warmer weather, with temperatures ranging from a minimum of 6°C (44°F) to a peak of 32°C (90°F). The average temperature rises to a comfortable 15°C (60°F), marking a significant warming trend compared to the cooler months preceding it. This month stands out as a time when the city shakes off the chill of early spring, paving the way for the summer heat that follows in June. As nature flourishes with vibrant blooms and longer days, May invites both locals and visitors to enjoy outdoor activities in pleasant conditions, setting the stage for the sun-soaked days ahead.
In May, Oakland experiences a significant dip in precipitation, with only 18 mm (0.7 in) of rain falling over just 2 days. This trend marks a noticeable transition as the city shifts from the wetter months earlier in the year, such as January and February, both averaging around 94 mm (3.7 in), to the dry summer ahead. By comparison, April's rainfall already shows a steep decline with 29 mm (1.2 in), indicating that the dry season is fast approaching. As the lush greenery of spring gives way to the warmer summer months, May serves as a gentle reminder of the impending dry spell, with rainfall dwindling towards June, which sees only 2 mm (0.1 in).
As May arrives in Oakland, the humidity begins to decrease, settling at 71%—a notable drop from the previous months. This decline follows a gradual trend from the wetter, colder months of winter, where humidity levels lingered above 80%. April’s 78% humidity already hinted at the transitional phase, and by May, residents can start enjoying a more comfortable atmosphere as the warm spring days advance. The continuation of this trend into June, with humidity dropping further to 64%, indicates a shift towards drier and more enjoyable summer conditions, marking a refreshing change in the Bay Area's climate.
As May rolls into Oakland, the UV Index soars to an impressive 10, marking it as a month of very high exposure risk. This sharp increase from April's 9 signifies that sun protection becomes paramount, with a brief burn time of just 15 minutes under those rays. Notably, this trend of escalating UV levels continues into June, which reaches 11, categorized as extreme. Comparatively, earlier months like January and February maintained a moderate UV Index of 3 and 5 respectively, allowing for 30-minute burn times without much concern. As the sun's intensity amplifies, it's essential for residents and visitors alike to stay informed and prepared when enjoying the outdoors. For more details, check out the comprehensive guide at Oakland UV Index.
UV Risk Categories
May shines brightly in Oakland, boasting 341 hours of glorious sunshine, making it one of the sunniest months of the year. As spring unfolds, the sun's presence noticeably rises from January’s modest 151 hours, steadily increasing through the months, culminating in an impressive peak in June at 355 hours. This upward trend in sunshine hours reflects the vibrant energy of the season, inviting residents and visitors alike to bask in the beautiful weather. Even as summer approaches, the sun remains a cherished companion, with July and August offering slightly fewer hours, yet still providing ample opportunity for outdoor adventures. As the year progresses into autumn, the daylight gradually diminishes, reminding us to savor those warm sunny moments while they last.
As spring unfolds, May emerges as a beacon of sunshine in Oakland, boasting a 70% chance of clear skies. This significant increase from the earlier months highlights a blossoming trend toward sunnier days, with the likelihood of sunshine rising from 39% in January to 61% by March. April continues this positive trajectory at 57%, setting the stage for May's warm embrace. Following months see a slight dip, but May distinctly stands out as a time when residents can expect bright and cheerful weather, making it an ideal month for outdoor gatherings and activities.
In Oakland, the daylight duration experiences a remarkable transformation throughout the year, culminating in the month of May with an inviting 14 hours of sunlight. Starting from the shortest days in January, which offer only 9 hours of light, the gradual increase is marked by a consistent rise each month. By February, daylight stretches to 10 hours, and as spring unfolds, April brings an impressive 13 hours. May's peak is a glorious prelude to summer, where daylight remains abundant, enhancing outdoor activities and gatherings. This trend of extended daylight continues into June, July, and, slightly diminishing, in August before tapering off in the fall months. The cycle concludes with shorter days in late autumn and winter, yet the vibrant progression to May showcases the joy of daylight as a highlight of Oakland’s seasonal rhythm.
In May, Oakland experiences a notable increase in wind speed, averaging 3.9 m/s (9 mph), marking it as one of the breeziest months of the year. This uptick follows a steady rise from 2.4 m/s (5 mph) in January, steadily gaining momentum through the spring months. As temperatures warm and the days grow longer, the winds become more pronounced, contributing to the vibrant outdoor atmosphere. In sharp contrast, the wind speed begins to gently taper off into the summer months of June and July, showcasing a pattern where spring's gusty charm gives way to the calmer breezes of summer. This seasonal transition not only enhances the city's captivating landscape but also invites residents and visitors alike to embrace the fresh air as they explore the beautiful surroundings.
The weather in Oakland changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of May's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Oakland and find detailed weather information for every month.
May and January present contrasting weather conditions. In May, temperatures range from a minimum of 6°C (44°F) to a maximum of 32°C (90°F), with an average of 15°C (60°F) and relatively low precipitation of just 18 mm (0.7 in) over 2 days. The humidity stands at 71%, contributing to a warm and pleasant atmosphere. In contrast, January experiences cooler temperatures, with a minimum of 0°C (32°F) and a maximum of 25°C (78°F), averaging 10°C (51°F). This month sees significantly higher precipitation at 94 mm (3.7 in) over 8 days and increased humidity levels at 82%. For a closer look at the January climate, check out Oakland weather in January.
When comparing the weather in May and February, a noticeable contrast emerges. May enjoys warmer temperatures, with average highs reaching 32°C (90°F) and only minimal precipitation of 18 mm (0.7 in) over just 2 days. In contrast, February is significantly cooler, featuring an average high of 26°C (78°F) and much larger precipitation totals of 91 mm (3.6 in) spread over 8 days, leading to higher humidity levels at 84%. For more detailed information, you can check Oakland weather in February.
When comparing the weather in May and March, it's clear that May tends to be warmer and drier. In May, temperatures range from a minimum of 6°C (44°F) to a maximum of 32°C (90°F), with an average of 15°C (60°F). There is only 18 mm (0.7 in) of precipitation over about 2 days, and humidity averages around 71%. In contrast, March experiences cooler temperatures, ranging from 3°C (37°F) to 27°C (81°F), with an average of 12°C (54°F). This month is also wetter, with 73 mm (2.9 in) of rain occurring over 10 days and higher humidity at 82%. For more details, you can check Oakland weather in March.
In comparing the weather between April and May, we see a noticeable shift in temperatures and precipitation patterns. May experiences slightly warmer temperatures, with an average of 15°C (60°F), while April has a lower average of 14°C (58°F). The maximum temperature in May reaches 32°C (90°F), just above April's high of 31°C (88°F). However, April has more variability in precipitation, receiving 29 mm (1.2 in) over 5 days compared to May's 18 mm (0.7 in) over just 2 days. Additionally, humidity levels are higher in April at 78%, compared to 71% in May. For a more detailed look at the weather specifics, you can refer to Oakland weather in April.
May and June exhibit contrasting weather patterns, reflecting a shift toward warmer conditions. In May, temperatures range from a minimum of 6°C (44°F) to a maximum of 32°C (90°F), with an average of 15°C (60°F) and 18 mm (0.7 in) of precipitation over 2 days, accompanied by a humidity level of 71%. In comparison, June features milder minimum temperatures starting at 9°C (49°F), a higher average of 18°C (64°F), and a spike in maximum temperatures reaching up to 37°C (99°F). Notably, June records significantly lower precipitation at just 2 mm (0.1 in) and no rainy days, along with reduced humidity at 64%. This transition marks June as a drier and warmer month, perfect for outdoor activities. For more specific details about weather patterns, check out Oakland weather in June.
May and July exhibit distinct weather patterns that reflect the transition from spring to summer. In May, temperatures range from a cool minimum of 6°C (44°F) to a warm maximum of 32°C (90°F), with an average of 15°C (60°F). The month sees relatively mild conditions, with 18 mm (0.7 in) of precipitation across two days and a higher humidity level of 71%. In contrast, July features a slightly warmer temperature profile, with minimums of 11°C (53°F) and an average of 18°C (64°F), but it maintains the same maximum of 32°C (90°F). Remarkably, July experiences no rainfall, leading to a completely dry month, and the humidity drops to a more comfortable 58%. For more detailed information, check out Oakland weather in July.
May and August present distinct weather patterns, showcasing the transition from spring to summer. In May, temperatures range from a cool minimum of 6°C (44°F) to a warm maximum of 32°C (90°F), with an average temperature of 15°C (60°F). This month features some precipitation, with 18 mm (0.7 in) expected over two days and a higher humidity level of 71%. In contrast, August warms up substantially, with temperatures ranging from a minimum of 11°C (52°F) to a scorching maximum of 37°C (99°F) and an average of 18°C (65°F). Notably, August experiences no precipitation, resulting in a drier atmosphere and lower humidity of 54%. For more details on the August weather specifics, you can refer to Oakland weather in August.
May and September showcase a stark contrast in weather patterns. In May, temperatures range from a cool 6°C (44°F) at night to a warm 32°C (90°F) during the day, with an average of 15°C (60°F). The month experiences light rainfall, averaging 18 mm (0.7 in) over two days and boasts a higher humidity level of 71%. In contrast, September offers slightly cooler temperatures with a minimum of 8°C (48°F) and a maximum of 40°C (104°F), averaging 19°C (66°F). Notably, September is exceptionally dry, with just 1 mm (0.0 in) of rainfall across the month and no rainy days, accompanied by a lower humidity of 55%. For more detailed insights, you can check Oakland weather in September.
May and October present a transition in weather patterns, with both months offering mild temperatures and occasional warmth. In May, the temperatures range from a minimum of 6°C (44°F) to a maximum of 32°C (90°F), with an average of 15°C (60°F) and a humidity level of 71%. The month sees about 18 mm (0.7 in) of precipitation over roughly 2 days. Conversely, October experiences slightly cooler conditions, with temperatures ranging from a low of 5°C (41°F) to a high of 34°C (93°F), averaging 17°C (63°F). It has a lower humidity of 62% and slightly more precipitation at 24 mm (1.0 in) over just 1 day. For a deeper insight into October weather, you can check out Oakland weather in October.
May and November present notably different weather patterns. In May, temperatures range from a minimum of 6°C (44°F) to a maximum of 32°C (90°F), with an average temperature of 15°C (60°F). The month sees relatively low precipitation, totaling 18 mm (0.7 in) over just 2 days, and humidity levels are moderate at 71%. In contrast, November is cooler, with temperatures ranging from a minimum of 3°C (37°F) to a maximum of 27°C (81°F) and an average of 13°C (56°F). This month experiences higher precipitation at 42 mm (1.7 in) spread over 5 days, along with increased humidity at 78%. For more detailed insights, check the Oakland weather in November.
May and December present contrasting weather patterns. In May, temperatures range from a pleasant minimum of 6°C (44°F) to a warm maximum of 32°C (90°F), with an average temperature of 15°C (60°F). The month sees relatively low precipitation of 18 mm (0.7 in) over just two days, and humidity levels hover around 71%. In contrast, December experiences cooler temperatures, with a minimum of 2°C (35°F), an average of 10°C (51°F), and a maximum of 23°C (74°F). Precipitation significantly increases to 80 mm (3.2 in) over eight days, and humidity rises to 80%. This shift highlights a transition from the warmth and relative dryness of May to the chillier, wetter conditions typical of December. For more information, you can check Oakland weather in December.
As spring transitions into summer, May in Oakland showcases a delightful warmth that distinguishes it from the cooler months. With an average temperature hovering around a pleasant 15°C (60°F), the days can heat up to a maximum of 32°C (90°F), providing plenty of opportunities for outdoor activities. Unlike the wetter winter months, May enjoys significantly lower precipitation, with only 2 days of light rain totaling 18 mm (0.7 in), making it an ideal time for residents and visitors to explore the beautiful surroundings. The humidity levels remain moderate at 71%, contributing to a comfortable atmosphere. For more insights into what to expect throughout the year, visit Oakland Climate.