May Weather in Annapolis, United States

Last updated: February 24, 2025

In Annapolis, May ushers in a delightful transition into warmer weather, with maximum temperatures reaching up to 31°C (88°F) and an average of 18°C (65°F), providing an inviting climate for outdoor activities. However, the month also brings variability, featuring a minimum temperature of 4°C (39°F). A total precipitation of 138 mm (5.4 in) falls over 13 days, contributing to the region’s lush greenery but also reminding residents and visitors of the occasional rain showers. With an average humidity level of 78%, May in Annapolis can create a warm and humid atmosphere, perfect for enjoying the scenic beauty of this charming coastal city.

May Temperature in Annapolis

In May, Annapolis enjoys a delightful shift toward warmer weather, with temperatures ranging from a minimum of 4°C (39°F) to a maximum of 31°C (88°F). This month marks a significant rise in warmth compared to the preceding months, reflecting a transition into the heart of spring. The average temperature settles at a comfortable 18°C (65°F), ideal for outdoor activities and enjoying the scenic waterfront. As the chilly winter days recede, May brings an invigorating ambiance, encouraging residents and visitors alike to bask in the sun and appreciate nature's blooming beauty. This trend of rising warmth is a precursor to the summer months, promising even more inviting temperatures ahead.

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

The chart illustrates May temperature patterns in Annapolis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec374046556575807873634942
Data source: Temperature data for Annapolis 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 Annapolis

May in Annapolis marks a notable transition into the warmer months, characterized by the highest precipitation of the year at 138 mm (5.4 in) over 13 rainy days. This increase signals a shift from the lighter showers of early spring to more substantial downpours, as the region prepares for summer. In comparison to the preceding months, May's rainfall is significantly more than April’s 110 mm (4.3 in), underscoring a trend of escalating moisture as the year progresses. As one of the rainiest months, May's weather plays a crucial role in nourishing the lush landscapes, setting the stage for the vibrant bloom of early summer.

May Precipitation Trends in Annapolis

The chart displays monthly precipitation patterns in Annapolis, 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.
JanFebMarAprMayJunJulAugSepOctNovDec701169511013810217515911312786109
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Annapolis

In Annapolis, May ushers in a noticeable shift in humidity levels, dipping to 78%, marking a gentle decline from the slightly higher figures in the earlier months of the year. This gradual decrease continues into June, when humidity edges up to 79%, suggesting a subtle rise as summer approaches. Overall, May reflects a trend of decreasing humidity starting from January's high of 84%, providing a refreshing contrast as the city transitions into the warmer months. The trend throughout the year illustrates a pattern where humidity is at its peak in the winter and sees a decline towards the summer, creating a comfortable environment as spring fully arrives.

May Average Humidity in Annapolis

This chart illustrates the average monthly humidity levels in Annapolis, 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.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%83%81%78%79%74%72%75%81%85%84%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Annapolis

As spring turns to summer in Annapolis, the UV Index escalates sharply, with May reaching an impressive 10, marking it as very high and demanding caution from residents and visitors alike. This upward trend signifies a dramatic shift from the milder indexes of the earlier months; January and February had moderate levels of 3 and 5, respectively, allowing for longer burn times of 30 minutes without protection. However, by April, the situation intensifies, jumping to 9 and reducing burn time to just 15 minutes. As we step into May, it becomes crucial to utilize sun protection measures promptly, as the risk of skin damage increases significantly. This pattern continues into June and July, where the UV Index remains at 10, highlighting the importance of awareness during these sun-soaked months. For more detailed information, check out the Annapolis UV Index.

Maximum UV Index Levels in Annapolis for May

The chart shows the monthly maximum UV Index (UVI) for Annapolis 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.
JanFebMarAprMayJunJulAugSepOctNovDec357910101098753
Data source: Annapolis 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 Annapolis

In Annapolis, May marks a delightful transition into the sunniest part of the year, recording an impressive 297 hours of sunshine. This month stands out as a bright peak following the gradual increase from January's 151 hours to the lush April's 268 hours. As spring unfolds, the day's length expands, paving the way for more joyful outdoor activities. Following May, sunshine continues to flourish in June and July, peaking at 339 hours. However, as summer wanes into late summer and early autumn, the hours gradually decline, with September's 281 hours still offering a generous amount of daylight. This trend highlights May as not just a month of warmth but also one of the brightest, setting the stage for a vibrant season ahead.

Monthly Sunshine Duration in Annapolis: May Highlighted

The May sunshine duration represents the total number of hours Annapolis 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.
JanFebMarAprMayJunJulAugSepOctNovDec151h182h261h268h297h339h359h329h281h250h226h190h
Data source: Annapolis May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Annapolis During May

As spring transitions into summer, May in Annapolis boasts a 41% chance of sunny weather, reflecting a moderate likelihood compared to the months before and after. Although April and May show a slight dip, with April at 48% and June at 39%, it’s important to note that March kicks off the season with a 53% chance, showcasing the gradual warming trend. The data illustrates a fluctuating pattern, where the sunny chances spike notably in September (55%) and November (56%), suggesting a captivating interplay of seasonal changes in this charming coastal city. So while May may not offer the sunniest days, it still beckons with the promise of delightful springtime weather.

Percentage of Sunny Days in May in Annapolis

The chart illustrates the percentage of sunny days in Annapolis 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 Annapolis experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec46%28%53%48%41%39%51%35%55%42%56%38%
Data source: Annapolis May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Annapolis in May

As May approaches in Annapolis, daylight begins to flourish, with the sun gracing the skies for an impressive 14 hours. This marks a delightful progression from the 9 hours of light enjoyed in January, reflecting the gradual lengthening of days as spring transitions into summer. Following a steady climb from February's 10 hours to April's 13 hours, May stands as a pinnacle of brightness that continues into June, where daylight remains at 14 hours. As summer settles in, the daylight starts a gentle retreat into the fall months, with a gradual decrease to 11 hours by October. The journey through daylight hours not only highlights the beauty of the changing seasons but also invites residents to embrace the longer, sunlit days of spring and early summer.

Average Daylight Hours in Annapolis for May

The chart illustrates the variation in daylight duration in Annapolis throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 46m10h 44m11h 58m13h 15m14h 19m14h 51m14h 33m13h 36m12h 23m11h 7m10h 1m9h 27m
Data source: Annapolis daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Annapolis

In May, Annapolis experiences a gentle average wind speed of 3.7 m/s (8 mph), marking a subtle decline from the breezy conditions of earlier months. While January through April showcase winds ranging from 3.9 to 4.3 m/s, there's a noticeable shift as spring transitions towards summer. The calming breezes of May not only usher in warmer temperatures but also signal the beginning of a trend towards lighter winds, as seen in June, where speeds dip to 3.4 m/s (8 mph). This gradual decrease suggests a seasonal rhythm, providing a serene backdrop for the vibrant outdoor activities that flourish in Annapolis during this time of year.

Average May Wind Speed in Annapolis

The chart displays monthly wind speed patterns in Annapolis, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.94.34.24.13.7 m/s3.43.22.73.63.84.13.6
Data source: Annapolis May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Annapolis Compares to Other Months

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

May and January present stark contrasts in weather patterns. In May, temperatures range from a chilly 4°C (39°F) at their lowest to a warm 31°C (88°F) at their peak, with an average of 18°C (65°F). The month experiences higher precipitation levels, averaging 138 mm (5.4 in) over about 13 days, accompanied by a humidity level of 78%. In stark contrast, January sees much colder conditions, with temperatures dipping as low as -13°C (10°F) and averaging only 3°C (37°F), peaking at a milder 17°C (63°F). The prevalence of snow and ice contributes to January's lower precipitation of 70 mm (2.7 in) over just 8 days, despite a slightly higher humidity level of 84%. For more insights on January's weather, visit Annapolis weather in January.

May and February present contrasting weather patterns. In May, temperatures range from a minimum of 4°C (39°F) to a maximum of 31°C (88°F), with an average of 18°C (65°F), while February experiences much colder conditions, with temperatures dipping to -13°C (10°F) and peaking at 21°C (69°F), averaging just 5°C (40°F). Precipitation levels are somewhat similar, with May receiving 138 mm (5.4 in) over 13 days, and February slightly lower at 116 mm (4.6 in) across 12 days. Humidity remains high in both months, with February at 83% and May at 78%, although the air feels markedly different due to the seasonal temperatures. For more detailed insights on February weather, check out Annapolis weather in February.

When comparing the weather between March and May, notable differences emerge in temperature and precipitation patterns. March experiences cooler temperatures, with a minimum of -5°C (23°F) and an average of 8°C (46°F), while May sees much warmer conditions, ranging from a minimum of 4°C (39°F) to an average of 18°C (65°F) and even reaching a maximum of 31°C (88°F). Additionally, May has higher precipitation levels at 138 mm (5.4 in) over 13 days in contrast to March's 95 mm (3.7 in) over 10 days. Humidity levels are slightly lower in May at 78% compared to March's 83%. For more detailed insights into March weather specifically, check out Annapolis weather in March.

The weather in May shows a noticeable warming trend compared to April, with average temperatures rising from 13°C (56°F) in April to 18°C (65°F) in May. While both months experience substantial humidity, May tends to have slightly lower humidity at 78% compared to April's 81%. Precipitation is also higher in May, totaling 138 mm (5.4 in) over 13 days, compared to April's 110 mm (4.3 in) over 11 days. For more detailed information about April's weather, you can refer to Annapolis weather in April.

May and June both feature mild to warm temperatures, but June generally feels more pleasant due to higher average temperatures. In May, temperatures range from a chilly minimum of 4°C (39°F) to a warm maximum of 31°C (88°F), with an average of 18°C (65°F). June sees a significant increase in the minimum temperature at 12°C (53°F) and an average of 24°C (75°F), peaking at 32°C (91°F). Additionally, June experiences slightly less rainfall with 102 mm (4.0 in) compared to May's 138 mm (5.4 in), despite both months having precipitation on 13 days. Humidity levels remain comparable, with May at 78% and June at 79%. For more detailed weather insights, check out Annapolis weather in June.

May and July exhibit distinct weather patterns, reflecting the transition from spring to summer. In May, temperatures range from a cool 4°C (39°F) at night to a warmer 31°C (88°F) during the day, with an average of 18°C (65°F). The month sees considerable precipitation, totaling 138 mm (5.4 in) over 13 days, coupled with a high humidity of 78%. In contrast, July experiences significantly warmer temperatures, with nighttime lows of 19°C (66°F) and daytime highs reaching up to 35°C (95°F), averaging around 27°C (81°F). Although July has more rainfall, totaling 174 mm (6.9 in) over 14 days, its humidity is slightly lower at 74%. For a deeper look into what to expect, you can check Annapolis weather in July.

In May, temperatures range from a cool minimum of 4°C (39°F) to a warm maximum of 31°C (88°F), with an average of 18°C (65°F). The month experiences significant precipitation, totaling 138 mm (5.4 in) over 13 days, accompanied by a high humidity level of 78%. In contrast, August brings warmer temperatures, with a minimum of 17°C (63°F) and a maximum reaching 33°C (92°F), and an average of 26°C (78°F). Though August sees slightly more precipitation at 159 mm (6.3 in) over 15 days, the humidity is lower at 72%. For more details on August weather, check out Annapolis weather in August.

May and September present distinct weather characteristics that reflect the transition of spring to autumn. In May, temperatures range from a cool 4°C (39°F) at night to a warm 31°C (88°F) during the day, with an average of 18°C (65°F). The month sees significant rainfall, totaling 138 mm (5.4 in) over approximately 13 days, contributing to a higher humidity of 78%. In contrast, September boasts milder evenings with a minimum temperature of 11°C (52°F) and warmer daytime highs reaching 32°C (90°F), averaging around 23°C (73°F). With less precipitation at 113 mm (4.5 in) spread over 10 days, September enjoys slightly lower humidity levels at 75%. For a more detailed view of September weather, visit Annapolis weather in September.

In May, temperatures typically range from a mild 4°C (39°F) at night to a warm 31°C (88°F) during the day, with an average of 18°C (65°F). The month experiences a fair amount of rainfall, totaling 138 mm (5.4 in) over about 13 days, and humidity levels are around 78%. Conversely, October's weather is slightly cooler, with temperatures starting at 5°C (41°F) in the early morning and peaking at 32°C (90°F) during the day, averaging 17°C (64°F). Rainfall is slightly less at 127 mm (5.0 in) over approximately 10 days, and humidity increases to 81%. For more detailed information, you can check Annapolis weather in October.

May and November present distinctly different weather experiences. In May, temperatures range from a chilly 4°C (39°F) at night to a warm 31°C (88°F) during the day, with an average temperature of 18°C (65°F). The month sees considerable rainfall, with 138 mm (5.4 in) spread over 13 days, accompanied by a humidity level of 78%. In contrast, November is much cooler, with minimum temperatures dipping to -3°C (27°F) and an average of 9°C (49°F). The maximum temperature reaches a milder 24°C (75°F), and precipitation is lower at 86 mm (3.4 in) over just 8 days, with humidity slightly higher at 85%. For a more detailed look, you can check the Annapolis weather in November.

May and December present contrasting weather patterns. In May, temperatures range from a minimum of 4°C (39°F) to a maximum of 31°C (88°F), with an average of 18°C (65°F), creating a warm and pleasant atmosphere. However, it experiences higher precipitation at 138 mm (5.4 in) over 13 days, and humidity levels sit at 78%. In contrast, December brings much colder temperatures, with a minimum of -8°C (17°F) and a maximum of 18°C (65°F), resulting in a cooler average of 5°C (42°F). The month sees less precipitation at 109 mm (4.3 in) over 10 days, but humidity rises slightly to 84%. For more detailed information, check out Annapolis weather in December.

Compare Annapolis's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Annapolis

As May arrives in Annapolis, the weather begins to shift, bringing warmer temperatures and a lively atmosphere compared to the cooler months preceding it. With daytime highs reaching 31°C (88°F), the average temperature rises to a comfortable 18°C (65°F), heralding the onset of outdoor activities and events. However, this month isn't solely characterized by sunshine; it sees 138 mm (5.4 in) of rainfall spread over 13 days, adding a refreshing touch to the budding landscape. The humidity at 78% contributes to a tropical feel, transforming Annapolis into a vibrant spring haven. For more insights on the year-round weather patterns, explore Annapolis Climate.