May Weather in Greenville, United States

Last updated: February 24, 2025

May weather in Greenville, United States showcases a delightful tapestry of warmth and occasional rain. With maximum temperatures reaching an inviting 34°C (94°F) and an average of 21°C (70°F), residents and visitors alike can enjoy the transition into summer. However, nighttime can bring a refreshing coolness with minimum temperatures dipping to 5°C (41°F). This month also brings about 137 mm (5.4 in) of precipitation spread over 11 days, resulting in a lush environment cradled by 85% humidity. Whether you’re basking in the sun or enjoying a cozy rain shower, Greenville's May offers a vibrant mix of climates to experience.

May Temperature in Greenville

In May, Greenville begins to unfurl its warm embrace as temperatures rise significantly, showcasing a delightful transition from the cooler months. The average temperature reaches a pleasant 21°C (70°F), with minimums settling at a comfortable 5°C (41°F) and maximums soaring to an inviting 34°C (94°F). This upward trend in warmth is a stark contrast to earlier months, where January’s chilly -12°C (10°F) minimum seems a world away. As spring flourishes, residents and visitors alike can enjoy the increasing daylight and blooming landscapes, making it an ideal time for outdoor activities and soaking up the sunshine before the heat of summer fully sets in.

May Weather in Greenville: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Greenville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec444954617076807874655147
Data source: Temperature data for Greenville 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.

May Precipitation in Greenville

In May, Greenville experiences a moderate precipitation level, with 137 mm (or 5.4 inches) of rain distributed across 11 days. This amount reflects a slight increase compared to April's 125 mm, indicating a ramp-up as the region transitions deeper into spring. The trend shows that May precipitation generally positions itself above the earlier months of the year, such as January and March, yet remains lower than the wetter February. As summer approaches, the rainfall in May helps to nourish the blossoming flora, creating a vibrant landscape while also hinting at the drier conditions expected in June.

May Precipitation Trends in Greenville

The chart displays monthly precipitation patterns in Greenville, with values for each month alongside May's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec99144109125138889312113213095130
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Greenville

In Greenville, United States, the month of May sees humidity levels settle at a comfortable 85%, a slight dip from the preceding months of April's 82% and the earlier winter months hanging around a high 86%. This stability hints at the transitional climate, as the region gradually shifts into summer. Following May, the humidity remains consistent at 85% in June, slightly tapering off in July and August. Interestingly, the year starts and ends on a humid note, with January and February maintaining the highest averages at 86%, while November and December also show significant humidity at 88%. Overall, the data illustrates a trend of relatively high humidity throughout the year, with subtle fluctuations reflecting the seasonal changes and setting the stage for a warm, inviting summertime atmosphere.

May Average Humidity in Greenville

This chart illustrates the average monthly humidity levels in Greenville, with May's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how May's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec86%86%86%82%85%85%83%76%76%80%88%88%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Greenville

As the sun strengthens in May, Greenville experiences an extreme UV Index of 11, with a quick burn time of just 10 minutes. This marks a significant rise from earlier months, where the Index escalated from a moderate 4 in January to a high 6 in February, and reaching a very high 10 by April. With this increasing trend, it’s crucial for residents and visitors alike to take protective measures against skin damage. As summer approaches, the UV Index remains high, continuing this pattern into June and July. For a comprehensive understanding of UV exposure and safety tips, explore more at Greenville UV Index.

Maximum UV Index Levels in Greenville for May

The chart shows the monthly maximum UV Index (UVI) for Greenville in May, 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.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109864
Data source: Greenville May 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.

May Sunshine in Greenville

As May arrives in Greenville, the sun truly begins to shine, contributing a remarkable 303 hours of sunlight – a delightful increase from the preceding months. This upward trend highlights a significant leap from April’s 275 hours, reflecting the onset of warmer weather and longer days. Following a steady climb from January's 168 hours, the sunshine in May sets the stage for a vibrant summer ahead. This peak in sunlight foreshadows even brighter days in June, when the hours escalate to 320, suggesting that Greenville is gearing up for a splendid summer filled with outdoor activities and sun-soaked adventures. The progression of hours showcases Greenville's transformation from winter's retreat to the exuberant promise of summer.

Monthly Sunshine Duration in Greenville: May Highlighted

The May sunshine duration represents the total number of hours Greenville experiences direct sunlight during the month of May, excluding cloudy or obstructed periods. This chart compares the sunshine duration of May with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec168h177h240h275h303h320h345h313h290h265h236h199h
Data source: Greenville May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Greenville During May

In Greenville, the likelihood of sunny weather shows some intriguing trends throughout the year, especially as we approach May. After a promising April with a 57% chance of sunshine, May dips to 36%, marking it as one of the cloudier months. This decline from April's brightness contrasts sharply with the sunnier months that follow, as June and July linger around the 31% to 38% range. Notably, the months leading into fall, like September and October, display a significant rebound in sunny potential, highlighting a seasonal shift that brings back clearer skies. Thus, while May may not be the sunniest month, it's a transitional period that signals the slow descent into the more overcast days of early summer.

Percentage of Sunny Days in May in Greenville

The chart illustrates the percentage of sunny days in Greenville throughout the year, with May 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 Greenville experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec46%40%38%57%36%31%38%41%50%47%61%39%
Data source: Greenville May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Greenville in May

As spring transitions into summer in Greenville, the daylight duration begins to expand, creating longer days that invite outdoor activities and exploration. In March, the day length increases to 11 hours, signaling the return of longer afternoons. This trend continues into April and May, where daylight remains steady at 13 hours, providing ample opportunity to enjoy the blossoming scenery. The peak arrives in June and July, with each day boasting 14 hours of sunlight, perfect for summer adventures. As the season wanes, daylight gradually recedes in August and September, before dropping to 10 hours by November. This rhythmic cycle highlights the distinct seasonal shifts in Greenville, shaping both daily routines and seasonal experiences.

Average Daylight Hours in Greenville for May

The chart illustrates the variation in daylight duration in Greenville throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 6m10h 55m11h 59m13h 4m13h 59m14h 26m14h 11m13h 23m12h 20m11h 15m10h 19m9h 50m
Data source: Greenville daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Greenville

In Greenville, United States, May brings a gentle breeze with an average wind speed of 2.5 m/s (6 mph). This mild wind is consistent with the preceding months, remaining stable since April and echoing the slightly higher speeds of March. As spring transitions into summer, it's clear that the winds begin to ease, paving the way for warmer days ahead. Notably, this period marks a peak in the year's wind speeds, reflecting a pattern where the winter months experience slightly brisker winds, but as temperatures rise, the winds tend to calm. Thus, May embodies a serene moment in the seasonal shift, balancing the year's climatic rhythms.

Average May Wind Speed in Greenville

The chart displays monthly wind speed patterns in Greenville, with values for each month shown alongside May's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how May's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.52.62.72.62.5 m/s2.11.91.71.92.12.32.5
Data source: Greenville May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Greenville Compares to Other Months

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

In May, temperatures in Greenville generally range from a pleasant 5°C (41°F) at night to a warm 34°C (94°F) during the day, making it a vibrant month for outdoor activities. The average temperature of 21°C (70°F) is complemented by relatively high humidity at 85% and 11 days of rain, contributing to a lush environment. In contrast, January brings much colder weather, with temperatures dipping as low as -12°C (10°F) at night and averaging only 7°C (44°F) during the day. Although the maximum temperature can reach a mild 25°C (78°F), January's 99 mm (3.9 in) of precipitation over 8 days and slightly lower humidity at 86% create a stark difference in atmosphere. For a more detailed look at January conditions, visit Greenville weather in January.

May and February present notably different weather patterns. In May, temperatures range from a minimum of 5°C (41°F) to a warm average of 21°C (70°F), peaking at 34°C (94°F). The month experiences approximately 137 mm (5.4 in) of precipitation over 11 days and has an average humidity of 85%. In contrast, February sees colder temperatures, with a minimum of -5°C (24°F) and an average of 10°C (50°F), reaching a maximum of 26°C (79°F). Precipitation is slightly higher at 144 mm (5.7 in) over 13 days, with the humidity remaining slightly elevated at 86%. For more detailed insights, you can check Greenville weather in February.

In comparing the weather between March and May, it is evident that May experiences significantly warmer temperatures, with an average of 21°C (70°F) compared to March's 12°C (54°F). While March can still reach a high of 31°C (87°F), it can start off quite chilly, with a minimum of -5°C (24°F). Precipitation levels are relatively close, with May receiving 137 mm (5.4 in) over 11 days and March recording 109 mm (4.3 in) across 12 days. Humidity remains fairly consistent, with May at 85% and March slightly higher at 86%. For more detailed insights into March weather, you can check out Greenville weather in March.

In comparing the weather of May and April, May is generally warmer and more humid. The minimum temperature in May is a mild 5°C (41°F), with an average of 21°C (70°F) and a maximum that can reach up to 34°C (94°F). In contrast, April starts off cooler with a minimum of -2°C (29°F) and an average temperature of 16°C (62°F), though it too can get warm with a maximum of 30°C (86°F). Precipitation is slightly higher in May at 137 mm (5.4 in) over 11 days, compared to April's 125 mm (4.9 in) over 9 days. The humidity also increases in May, averaging 85% compared to April's 82%. For more detailed information on April weather, check out Greenville weather in April.

In comparing the weather of May and June, we can observe some notable differences and similarities. May typically experiences temperatures ranging from a cool 5°C (41°F) to a warm 34°C (94°F), with an average of 21°C (70°F). This month sees a significant amount of rainfall, totaling 137 mm (5.4 in) over 11 days, while the humidity remains high at 85%. In contrast, June offers a milder climate with minimum temperatures rising to 12°C (55°F) and a slightly higher average of 24°C (76°F), peaking at 33°C (92°F). Rainfall decreases to 87 mm (3.4 in) but is spread over more days, totaling 15, yet humidity stays constant at 85%. For more detailed insights on June weather specifically, you can check Greenville weather in June.

May and July present different weather characteristics, with May experiencing a wider range of temperatures from a minimum of 5°C (41°F) to a maximum of 34°C (94°F). In contrast, July maintains a milder temperature range, with a minimum of 16°C (61°F) and a maximum of 35°C (95°F), resulting in an average temperature of 26°C (80°F). Precipitation in May is higher, totaling 137 mm (5.4 in) over 11 days, while July sees less rainfall at 93 mm (3.7 in) distributed across 16 days. Additionally, humidity levels are slightly lower in July at 83%, compared to 85% in May. For a detailed look at July's weather patterns, you can check Greenville weather in July.

May and August present distinct weather patterns, with May featuring a wider temperature range, from a chilly 5°C (41°F) to a warm 34°C (94°F), and an average of 21°C (70°F). The month experiences significant precipitation, totaling 137 mm (5.4 in) over 11 days, coupled with high humidity at 85%. In contrast, August tends to be warmer overall, with minimum temperatures starting at 15°C (60°F) and averaging 26°C (79°F), peaking at 35°C (96°F). This month sees slightly less rainfall at 121 mm (4.8 in) over 14 days and lower humidity levels at 76%. For more detailed weather insights, check out Greenville weather in August.

In May, temperatures range from a cool 5°C (41°F) at their minimum to a warm 34°C (94°F) at their peak, with an average of 21°C (70°F). The month typically experiences 137 mm (5.4 in) of precipitation over 11 days, accompanied by high humidity levels at 85%. In contrast, September sees slightly milder temperatures, with a minimum of 9°C (48°F) and a maximum of 35°C (95°F), averaging 23°C (74°F). Precipitation is also comparable, totaling 132 mm (5.2 in) over just 9 days, but with lower humidity at 76%. For more detailed insights on September weather, visit Greenville weather in September.

May and October present distinct weather patterns. In May, temperatures range from a cool 5°C (41°F) at night to a warm 34°C (94°F) during the day, with an average temperature of 21°C (70°F). The month sees significant precipitation, averaging 137 mm (5.4 in) over 11 days, accompanied by high humidity at 85%. In contrast, October features cooler nights with a minimum of 0°C (32°F) and a slightly lower average temperature of 18°C (65°F). Daytime highs can reach 36°C (97°F), but overall precipitation is slightly less, totaling 129 mm (5.1 in) over 10 days, with humidity at a lower 80%. A detailed look at the weather can be found here: Greenville weather in October.

May and November present contrasting weather experiences. In May, temperatures range from a minimum of 5°C (41°F) to a warm average of 21°C (70°F), peaking at a maximum of 34°C (94°F). This month also sees significant precipitation, with 137 mm (5.4 in) falling across 11 days, and humidity levels at a high 85%. In stark contrast, November features cooler temperatures, ranging from a chilly minimum of -5°C (24°F) to a more moderate average of 11°C (51°F), with highs reaching 26°C (79°F). The precipitation is less pronounced, totaling 95 mm (3.7 in) over 8 days, while humidity remains high at 88%. For more detailed information, check out Greenville weather in November.

May and December present striking contrasts in weather. In May, temperatures range from a mild 5°C (41°F) to a warm 34°C (94°F), with an average of 21°C (70°F), accompanied by high humidity levels of 85%. Rainfall in May totals 137 mm (5.4 in), occurring over 11 days, making it a relatively wet month. In contrast, December experiences a chilly range with minimum temperatures dropping to -7°C (19°F) and a more temperate maximum of 24°C (75°F), averaging around 8°C (47°F). Despite slightly lower precipitation at 130 mm (5.1 in) over 10 days, December's humidity is just a touch higher at 88%. For a more detailed insight into December's weather, you can check Greenville weather in December.

Compare Greenville's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Greenville

As May unfolds in Greenville, residents and visitors alike experience a significant shift in weather patterns compared to the earlier months of the year. The days grow warmer, with temperatures rising, presenting an inviting atmosphere perfect for outdoor activities. However, May’s moderate humidity levels can make the warmth feel more intense, while the increased rainfall—spanning nearly half of the month—ensures the region remains lush and vibrant. This blend of warm days and showers marks the transition into summer, making May a uniquely dynamic month in Greenville’s climate landscape. For a detailed overview of what to expect, check out Greenville Climate.