May Weather in Niagara Falls, United States

Last updated: February 24, 2025

May in Niagara Falls, United States, offers an invigorating blend of temperatures, ranging from a refreshing minimum of 0°C (32°F) to a balmy maximum of 29°C (84°F), making it an ideal time for outdoor exploration. The average temperature hovers around 13°C (56°F), perfect for enjoying the sights and sounds of nature. However, travelers should be prepared for occasional showers, with precipitation measuring 101 mm (4.0 in) over 13 days, contributing to the lush greenery of the region. With humidity levels at 82%, the air feels fresh and vibrant, enhancing the beauty of the iconic falls and nearby landscapes.

May Temperature in Niagara Falls

As May unfolds in Niagara Falls, a delightful warming trend emerges, transforming the region from the lingering chills of winter into the vibrant embrace of spring. The month starts with nighttime temperatures hovering at a mild 0°C (32°F), but by day, the sun casts its spell, elevating averages to a comfortable 13°C (56°F). This marks a significant leap from April's cooler readings, culminating in splendid highs that can reach a balmy 29°C (84°F). As nature awakens, visitors can expect pleasant days ideal for exploring the majestic falls, enjoying the lush greenery, and engaging in outdoor activities. May truly signals the arrival of warmer days, making it a perfect time to experience the beauty of Niagara Falls.

May Weather in Niagara Falls: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Niagara Falls, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec282935445666737265554134
Data source: Temperature data for Niagara Falls 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 Niagara Falls

In May, Niagara Falls experiences a notable precipitation level of 101 mm (4.0 in), contributing to the lush landscapes that spring brings. This month sees an average of 13 rainy days, striking a balance between pleasant weather and necessary showers. Compared to the earlier months, May's precipitation is slightly lower than April's peak of 116 mm, yet it remains a key player in maintaining the region's vibrant flora. As the spring season progresses towards summer, one can observe a consistency in precipitation patterns, with a dip in rainfall forecasted for June, hinting at a shift towards drier conditions. Overall, May stands out as a transitional month, blending the lingering moisture of spring with the anticipation of the sunny days that await in summer.

May Precipitation Trends in Niagara Falls

The chart displays monthly precipitation patterns in Niagara Falls, 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.
JanFebMarAprMayJunJulAugSepOctNovDec7782721161018112583751288791
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Niagara Falls

As spring unfolds in Niagara Falls, May brings a noticeable shift in humidity levels, settling at 82%—a drop from the 88% observed in the previous months. This trend marks a gradual retreat from the winter's high humidity, creating a more comfortable atmosphere for outdoor enthusiasts. As the region transitions into summer, humidity continues to decrease, reaching its lowest levels in July at 77%. The lower humidity levels of May offer a pleasant reprieve, ideal for exploring the natural beauty of the falls and enjoying outdoor activities. Overall, the trend highlights a movement towards drier air as the warm season approaches, enhancing the allure of Niagara Falls in springtime.

May Average Humidity in Niagara Falls

This chart illustrates the average monthly humidity levels in Niagara Falls, 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.
JanFebMarAprMayJunJulAugSepOctNovDec91%91%88%88%82%80%77%72%76%83%88%87%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Niagara Falls

As spring transitions into summer in Niagara Falls, the UV Index sees a remarkable rise, especially in May, where it reaches a notable 9, categorized as very high. This marks a continuation of an upward trend, following April’s significant jump to 8. With such high UV levels, sun safety becomes crucial, as the burn time reduces sharply to just 15 minutes. This pattern persists into June and July, highlighting the importance of protecting your skin as outdoor activities increase in the warmer months. For those planning to enjoy the stunning sights of Niagara Falls, being aware of the Niagara Falls UV Index is essential to ensure a safe and enjoyable experience under the sun.

Maximum UV Index Levels in Niagara Falls for May

The chart shows the monthly maximum UV Index (UVI) for Niagara Falls 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.
JanFebMarAprMayJunJulAugSepOctNovDec2458910997532
Data source: Niagara Falls 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 Niagara Falls

As May arrives in Niagara Falls, the sunshine truly starts to shine, with 292 hours of glorious daylight, marking a vibrant leap from the 240 hours recorded in April. This increase signals the transition into the warmer months, as days lengthen and the scenery bursts into life, drawing visitors eager to experience the breathtaking beauty of the falls. Following May, June takes the lead with 341 hours of sunshine, further encouraging outdoor adventures and exploration. A noticeable trend emerges as summer approaches, showcasing a steady rise in sunlight that peaks in the height of summer. As the seasons progress, this balance of brightness creates a scenic backdrop, making Niagara Falls a captivating destination for those eager to embrace the wonders of nature.

Monthly Sunshine Duration in Niagara Falls: May Highlighted

The May sunshine duration represents the total number of hours Niagara Falls 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.
JanFebMarAprMayJunJulAugSepOctNovDec108h151h232h240h292h341h348h345h304h206h157h115h
Data source: Niagara Falls May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Niagara Falls During May

In Niagara Falls, the likelihood of sunny weather begins to rise notably as spring unfolds, with May offering a promising 45% chance of sun. This mirrors the optimism of March, while showing a slight improvement over April, which sits at 40%. As the region transitions into summer, sunny days remain relatively consistent, with the chance fluctuating around 40% to 46% from June through August. Overall, as you look forward to outdoor adventures in May, you'll find that the odds are decidedly in favor of enjoying the bright skies, making it an inviting time to explore the stunning scenery of this iconic destination.

Percentage of Sunny Days in May in Niagara Falls

The chart illustrates the percentage of sunny days in Niagara Falls 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 Niagara Falls experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec14%24%45%40%45%44%40%47%43%29%37%23%
Data source: Niagara Falls May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Niagara Falls in May

As spring unfolds in Niagara Falls, the month of May is a highlight, showcasing a delightful increase in daylight duration that peaks at 14 hours. This trend reflects the steady climb from 9 hours in January through 10 hours in February, reaching 11 hours in March and 13 hours by April. May not only brings longer days but also heralds the approach of summer, as the daylight hours further increase to 15 hours in June, setting the stage for vibrant outdoor activities. Following the summer solstice, daylight begins to taper off, with July and August offering 14 and 13 hours respectively, before gradually descending to 12 hours in September. This cyclical pattern underscores the beautiful transition of seasons in Niagara Falls, providing a rhythm of light that enhances the experience of nature’s splendor.

Average Daylight Hours in Niagara Falls for May

The chart illustrates the variation in daylight duration in Niagara Falls throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 25m10h 32m11h 57m13h 25m14h 39m15h 16m14h 56m13h 50m12h 26m10h 59m9h 42m9h 3m
Data source: Niagara Falls daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Niagara Falls

As spring gently takes hold in Niagara Falls, May presents a notable shift in wind patterns. With an average wind speed of 3.5 m/s (8 mph), the breezes soften compared to the preceding months, reflecting a trend often seen as winter departs. This month, while typically characterized by pleasant weather, experiences slightly lower winds than both April and June, hinting at a brief pause before summer's warming winds set in. Overall, May showcases a distinct transitional phase, balancing the last whispers of spring with the anticipation of summer's arrival, making it a particularly charming time to visit the majestic falls.

Average May Wind Speed in Niagara Falls

The chart displays monthly wind speed patterns in Niagara Falls, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.04.64.83.93.5 m/s4.33.33.14.03.94.65.1
Data source: Niagara Falls May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Niagara Falls Compares to Other Months

The weather in Niagara Falls 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 Niagara Falls and find detailed weather information for every month.

When comparing the weather in May and January, notable contrasts emerge. May typically experiences milder temperatures, ranging from a chilly 0°C (32°F) at night to a pleasant high of 29°C (84°F) during the day, with an average temperature of 13°C (56°F). In contrast, January is significantly colder, with temperatures plummeting to a minimum of -19°C (-1°F) and an average of -2°C (28°F), peaking at just 14°C (58°F). Additionally, May sees higher humidity at 82% compared to January's 91%, contributing to a more comfortable atmosphere in late spring. Despite May receiving more precipitation (101 mm) over more days (13) than January (77 mm over 12 days), the overall climate in May is far more inviting. For more details on the winter conditions, you can check Niagara Falls weather in January.

May and February present stark contrasts in weather, reflecting the transition from winter to late spring. In May, temperatures range from a chilly 0°C (32°F) at night to a warm 29°C (84°F) during the day, with an average of 13°C (56°F). The month sees about 101 mm (4.0 in) of precipitation over 13 days, accompanied by a relatively high humidity of 82%. In contrast, February experiences much colder conditions, with temperatures dipping as low as -19°C (-3°F) and peaking at 16°C (61°F), resulting in an average temperature of -2°C (29°F). This winter month records about 82 mm (3.2 in) of precipitation over 14 days and features even higher humidity at 91%. For more details about February weather, check out Niagara Falls weather in February.

Comparing the weather in May and March highlights a significant seasonal transition. In May, temperatures range from a brisk minimum of 0°C (32°F) to a comfortable maximum of 29°C (84°F), with an average of 13°C (56°F). The month sees about 101 mm (4.0 in) of precipitation over 13 days, and humidity averages around 82%. In contrast, March experiences colder conditions, with temperatures dipping as low as -15°C (5°F) and peaking at 18°C (65°F), averaging just 2°C (35°F). Precipitation is lower in March at 72 mm (2.8 in) over 12 days, and humidity is slightly higher at 88%. This comparison underscores the milder and more humid conditions of May compared to the chillier and somewhat drier March. For more detailed insights on March weather, visit Niagara Falls weather in March.

Comparing the weather in April and May reveals notable differences. May experiences a broader temperature range with a minimum of 0°C (32°F) and a maximum of 29°C (84°F), while April’s temperatures range from a chilly -4°C (26°F) to a pleasant 24°C (75°F). Although May has slightly less precipitation at 101 mm (4.0 in) over 13 days, compared to April’s 116 mm (4.6 in) over 14 days, humidity levels are slightly lower in May at 82%, compared to April’s 88%. Thus, May tends to be warmer and slightly drier, making it a more favorable month for outdoor activities. For more insights, check out Niagara Falls weather in April.

In May, temperatures range from a chilly 0°C (32°F) at night to a pleasant 29°C (84°F) during the day, with an average of 13°C (56°F). The month experiences about 101 mm (4.0 in) of precipitation over 13 days, resulting in a high humidity level of 82%. In contrast, June sees a noticeable warming trend, with temperatures starting at a minimum of 8°C (47°F) and peaking at 30°C (87°F), while maintaining an average of 19°C (67°F). Precipitation decreases to 81 mm (3.2 in) over 10 days, contributing to a slightly lower humidity level of 79%. This transition marks a shift toward warmer and drier conditions as summer approaches. For more specific details about weather conditions in June, visit Niagara Falls weather in June.

May and July present contrasting weather patterns, highlighting the transition from spring to summer. In May, temperatures range from a chilly 0°C (32°F) at night to a pleasant average of 13°C (56°F) during the day, with a maximum of 29°C (84°F). The month sees about 101 mm (4.0 in) of precipitation over 13 days, coupled with a high humidity level of 82%. In contrast, July experiences milder nights with a minimum temperature of 15°C (58°F), and a much warmer average of 23°C (73°F), peaking at 32°C (90°F). Although July has slightly higher rainfall at 125 mm (4.9 in) over the same number of days, it maintains a lower humidity level of 77%. For a detailed look at July weather, check out Niagara Falls weather in July.

The weather in May is quite variable, with temperatures ranging from a chilly 0°C (32°F) to a warm 29°C (84°F) and an average of 13°C (56°F). It experiences higher humidity at 82% and significant precipitation of 101 mm (4.0 in) over 13 days. In contrast, August offers a more stable and warmer climate, with minimum temperatures starting at 13°C (56°F) and a maximum of 30°C (86°F), along with an average temperature of 22°C (72°F). Precipitation is lower in August, at 83 mm (3.3 in) over the same number of days, and humidity decreases to 72%. For more information, you can check Niagara Falls weather in August.

May and September present distinct weather characteristics. In May, temperatures can range from a chilly 0°C (32°F) to a warm 29°C (84°F), with an average of 13°C (56°F), while September typically sees milder temperatures with a minimum of 7°C (44°F), an average of 19°C (66°F), and a high of 30°C (86°F). Precipitation is more frequent in May, with about 101 mm (4.0 in) falling over 13 days, compared to September's 75 mm (3.0 in) over just 9 days. Interestingly, May has a higher humidity level of 82% compared to 76% in September. For more specific details on autumn weather patterns, check out Niagara Falls weather in September.

May and October showcase relatively mild temperatures, with average highs around 13°C (56°F). However, May offers a broader temperature range, with maximums reaching up to 29°C (84°F), while October sees highs of 26°C (80°F). Precipitation is slightly heavier in October, totaling 128 mm (5.0 in) over 16 days compared to May's 101 mm (4.0 in) across 13 days. Humidity levels remain similar, hovering around 82% in May and 83% in October, creating a consistently moist atmosphere. For more specific insights on October conditions, check out Niagara Falls weather in October.

May and November present contrasting weather patterns. May enjoys a more moderate temperature range, with a minimum of 0°C (32°F) and an average of 13°C (56°F), peaking at a pleasant 29°C (84°F). In contrast, November showcases significantly lower temperatures, dipping to -9°C (16°F) and averaging only 5°C (42°F), though it can reach a maximum of 21°C (70°F). Precipitation levels in May are slightly higher at 101 mm (4.0 in) over 13 days, while November receives 87 mm (3.4 in) also over 13 days. Humidity is notably high in both months, with May at 82% and November increasing to 88%. For more specific insights on November conditions, check Niagara Falls weather in November.

In May, temperatures range from a chilly 0°C (32°F) at night to a warm maximum of 29°C (84°F) during the day, with an average of 13°C (56°F). The month sees approximately 101 mm (4.0 in) of precipitation over 13 days, accompanied by a humidity level of 82%. In contrast, December experiences much colder temperatures, with lows plummeting to -18°C (0°F) and highs reaching only 17°C (62°F), averaging around 1°C (34°F). This month has relatively similar precipitation at 91 mm (3.6 in) over 15 days, but the humidity is slightly higher at 87%. For a detailed look at what to expect during this season, visit Niagara Falls weather in December.

Compare Niagara Falls's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Niagara Falls

As May unfolds in Niagara Falls, the weather begins to transition from the cool grasp of winter to the warm embrace of summer. With higher temperatures reaching up to 29°C, visitors can enjoy more outdoor activities, though early mornings and late evenings can still feel brisk with averages around 13°C. This month also sees a notable increase in humidity at 82%, creating a lush and vibrant atmosphere, albeit accompanied by about 13 days of rain that bring essential moisture to the region. Compared to previous months, May is marked by a beautiful blend of warmth and refreshing spring showers, setting the stage for the stunning scenery of Niagara Falls. For a deeper dive into the weather trends year-round, check out the comprehensive information at Niagara Falls Climate.