May Weather in Nanaimo, Canada

Last updated: April 22, 2025

In Nanaimo, Canada, May heralds the arrival of warmer days with a maximum temperature reaching up to 22°C (71°F), while the average temperature settles around 12°C (55°F). Nights can be quite chilly, with minimum temperatures dipping to 4°C (40°F). This month typically sees 70 mm (2.7 in) of precipitation across about 11 days, contributing to a generally humid atmosphere with an 81% humidity level. As spring unfolds, residents and visitors alike can expect a blend of rain and sun, creating a vibrant environment for outdoor activities.

May Temperature in Nanaimo

As May arrives in Nanaimo, the city begins to shake off the chill of winter, welcoming warmer days with a noticeable rise in temperatures. With a minimum of 4°C (40°F) and an average reach of 12°C (55°F), the month showcases the beauty of spring in full bloom. The maximum temperature can soar to 22°C (71°F), offering perfect conditions for outdoor activities and blooming gardens. These temperatures mark a clear upward trend from the cooler months preceding May, making it a delightful time to explore the natural splendor of Vancouver Island. As the days get increasingly warm and vibrant, residents and visitors alike can bask in the lush surroundings that define this lovely coastal city.

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

The chart illustrates May temperature patterns in Nanaimo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec403842475459646659504540
Data source: Temperature data for Nanaimo 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 Nanaimo

In May, Nanaimo experiences a welcome shift in its weather as precipitation levels drop significantly to 70 mm (2.7 in) over just 11 days of rain, marking one of the driest months of the year. This is a notable reduction from the 249 mm (9.8 in) recorded in January and follows a pattern of decreasing precipitation as spring unfolds. As the city transitions towards summer, the lighter rainfall in May invites more outdoor activities, while still retaining a lush, vibrant landscape typical of the region. In comparison, June mirrors May with a similar precipitation level, hinting at a balanced climate leading into the sunnier months ahead. This seasonal trend not only reflects Nanaimo's temperate maritime climate but also underscores the gradual shift from the heavier, more persistent rains of winter and early spring to the comparatively mild summer conditions.

May Precipitation Trends in Nanaimo

The chart displays monthly precipitation patterns in Nanaimo, 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.
JanFebMarAprMayJunJulAugSepOctNovDec24914713612670703340158194304252
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Nanaimo

In Nanaimo, Canada, May marks a notable shift in humidity levels as the spring season rolls into summer. With an average humidity of 81%, it presents a slight dip from the consistently high rates seen in the earlier months, where January through April all hovered around 86%. This decrease in moisture provides a refreshing change, allowing residents and visitors to enjoy the blossoming landscapes with a bit more comfort. As the summer approaches, humidity begins to rise again, reaching 83% in June and 84% in July, indicating that while May offers a brief respite, the coastal city's humidity levels are set to remain a defining aspect of its climate.

May Average Humidity in Nanaimo

This chart illustrates the average monthly humidity levels in Nanaimo, 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%85%86%86%81%83%84%77%76%88%87%87%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Nanaimo

As spring transitions into summer, Nanaimo experiences a significant rise in the UV Index, reaching 8 in May, categorized as very high. This increase highlights the importance of sun safety, as the burn time drops to just 15 minutes. Following a gradual ascent from a low of 2 in January to 6 in April, May marks a pivotal point where sun exposure becomes more critical. By June, the UV Index peaks at a notable 9, emphasizing a seasonal trend of heightened sun intensity that persists through the summer months. For more detailed insights on UV levels throughout the year, visit Nanaimo UV Index.

Maximum UV Index Levels in Nanaimo for May

The chart shows the monthly maximum UV Index (UVI) for Nanaimo 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.
JanFebMarAprMayJunJulAugSepOctNovDec234689986421
Data source: Nanaimo 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 Nanaimo

In Nanaimo, Canada, May shines as a radiant highlight in the annual sunshine saga, boasting a remarkable 320 hours of sunlight—an increase that reflects the transitional beauty of spring. This month marks a significant leap from 228 hours in April, setting the stage for the sun-drenched days ahead. The trend continues into June, which enjoys slightly more sunshine at 329 hours, reaching the peak in the summer months. As the year progresses, sunshine hours generally surge from the winter lows of 72 hours in January, culminating in the vibrant summer, before tapering off into the softer light of autumn. May truly encapsulates the essence of this seasonal transformation, inviting locals and visitors alike to bask in its golden glow before the sun retreats into the cooler months.

Monthly Sunshine Duration in Nanaimo: May Highlighted

The May sunshine duration represents the total number of hours Nanaimo 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.
JanFebMarAprMayJunJulAugSepOctNovDec72h133h197h228h320h329h378h339h241h173h110h88h
Data source: Nanaimo May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Nanaimo During May

As May arrives in Nanaimo, Canada, residents and visitors can expect a 40% chance of sunny weather, a notable increase compared to the earlier months. This uptick follows a significant leap in April, where the sun made a welcomed appearance 56% of the time. While May doesn't enjoy the full embrace of summer just yet, it marks a turning point from the dreary winter months, which hovered around a mere 19% to 29% chance of sunshine. Looking ahead, June and July promise even more sun, with chances soaring to 53% and 72%, respectively. Thus, May serves as a delightful bridge, tantalizingly hinting at the warm, sunny days that are just around the corner.

Percentage of Sunny Days in May in Nanaimo

The chart illustrates the percentage of sunny days in Nanaimo 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 Nanaimo experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec19%26%29%56%40%53%72%56%31%24%18%21%
Data source: Nanaimo May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Nanaimo in May

As spring unfolds in Nanaimo, Canada, daylight hours steadily increase, reaching a delightful 15 hours in May. This month marks a vibrant transition, as residents bask in the warm glow of longer days, a notable rise from 13 hours in April. The trend continues, peaking in June with an impressive 16 hours, before gradually settling back to 15 hours in July. As summer wanes into autumn, daylight diminishes, with September offering 12 hours and November bringing a return to the shorter days of winter, where 9 hours reign. This rhythmic cycle of light and dark not only enhances outdoor activities during the sunny months but also cultivates a deeper appreciation for the seasonal changes that define Nanaimo's picturesque landscape.

Average Daylight Hours in Nanaimo for May

The chart illustrates the variation in daylight duration in Nanaimo throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 43m10h 10m11h 56m13h 46m15h 20m16h 8m15h 41m14h 16m12h 31m10h 42m9h 6m8h 15m
Data source: Nanaimo daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Nanaimo

In Nanaimo, May marks a gentle transition in wind patterns, with an average wind speed of only 2.8 m/s (6 mph). This dip continues the trend observed since April, where the winds softened significantly from the brisker speeds of earlier months. Following the spring months of March and April, which had averages of 4.0 m/s (9 mph) and 3.1 m/s (7 mph) respectively, May's calmer breezes signal the onset of summer's milder conditions. The pattern reflects a gradual decrease in wind activity as the year progresses, peaking again in the fall with an uptick in November, which sees speeds ramping back up to 4.5 m/s (10 mph). This rhythm of wind in Nanaimo creates a serene atmosphere, perfect for enjoying the beauty of the transitioning seasons.

Average May Wind Speed in Nanaimo

The chart displays monthly wind speed patterns in Nanaimo, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.34.04.03.12.8 m/s2.92.52.73.24.24.53.9
Data source: Nanaimo May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Nanaimo Compares to Other Months

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

In comparison, May experiences milder temperatures ranging from a minimum of 4°C (40°F) to a maximum of 22°C (71°F), with an average of 12°C (55°F). The month sees about 70 mm (2.7 in) of precipitation over 11 days, and humidity levels are relatively high at 81%. In contrast, January is much colder, with temperatures dropping to a minimum of -5°C (23°F) and reaching a maximum of 9°C (49°F), averaging only 4°C (40°F). This month is considerably wetter, receiving 249 mm (9.8 in) of precipitation over 17 days, and exhibiting slightly higher humidity at 86%. For more detailed information, you can check Nanaimo weather in January.

The weather in May is significantly milder compared to February, with temperatures ranging from a minimum of 4°C (40°F) to a maximum of 22°C (71°F), averaging around 12°C (55°F). In contrast, February experiences colder conditions, with temperatures ranging from -5°C (23°F) to a maximum of only 9°C (49°F), and an average of 3°C (38°F). While May sees 70 mm (2.7 in) of precipitation over approximately 11 days, February is much wetter, receiving 147 mm (5.8 in) across about 16 days. Additionally, humidity remains relatively high in both months, with February at 85% and May at 81%. For more detailed information on February weather, you can check Nanaimo weather in February.

When comparing the weather in May to that of March, it becomes evident that May enjoys warmer temperatures, with an average of 12°C (55°F) and highs reaching 22°C (71°F), while March has a cooler average of 6°C (42°F) and a maximum temperature of 15°C (59°F). Precipitation is significantly lower in May, totaling 70 mm (2.7 in) over 11 days, compared to March's 136 mm (5.3 in) spread across 15 days. Additionally, humidity remains relatively high in both months, with March slightly higher at 86% compared to 81% in May. For more details, you can view the Nanaimo weather in March.

In comparing the weather of May and April, we see a shift toward warmer conditions and slightly less precipitation. May enjoys a minimum temperature of 4°C (40°F) and an average of 12°C (55°F), peaking at 22°C (71°F). In contrast, April offers cooler temperatures, with a minimum of 2°C (36°F), an average of 8°C (47°F), and a maximum of 18°C (65°F). Additionally, April experiences significantly higher precipitation at 126 mm (5.0 in) over 15 days, compared to May's 70 mm (2.7 in) across 11 days. Humidity levels also differ slightly, with April being more humid at 86% compared to May's 81%. For a detailed overview of April's weather, you can refer to Nanaimo weather in April.

In comparing the weather of May and June, we see a noticeable increase in temperature as the seasons change. May features a minimum temperature of 4°C (40°F) and an average of 12°C (55°F), reaching a maximum of 22°C (71°F). In contrast, June starts with a higher minimum of 8°C (47°F) and an average temperature of 15°C (60°F), culminating in a maximum of 30°C (86°F). Precipitation levels are similar, with both months receiving about 70 mm (2.7 in in May and 2.8 in June), although June tends to have slightly more rainy days, totaling 12 compared to May's 11. Humidity levels also remain relatively high, peaking at 81% in May and rising to 83% in June. For more information, you can check Nanaimo weather in June.

In May, temperatures in Nanaimo range from a cool minimum of 4°C (40°F) to an average of 12°C (55°F), with a maximum reaching 22°C (71°F). The month sees about 70 mm (2.7 in) of precipitation over approximately 11 days, contributing to a relatively high humidity level of 81%. In contrast, July experiences milder weather, with temperatures ranging from a minimum of 11°C (53°F) to an average of 18°C (65°F), peaking at a warm 27°C (81°F). Rainfall decreases significantly to 33 mm (1.3 in) over just 6 days, and the humidity rises slightly to 84%. For more detailed insights on July conditions, you can refer to Nanaimo weather in July.

In May, temperatures in Nanaimo typically range from a minimum of 4°C (40°F) to a maximum of 22°C (71°F), with an average temperature around 12°C (55°F). The month experiences about 70 mm (2.7 in) of rainfall over 11 days, contributing to a high humidity level of 81%. In contrast, August sees significantly warmer temperatures, ranging from a minimum of 12°C (54°F) to a maximum of 27°C (81°F), with an average temperature of 19°C (66°F). Precipitation drops to 40 mm (1.6 in) over just 5 days, and humidity levels are slightly lower at 77%. For more insights, you can check Nanaimo weather in August.

May and September each bring their unique weather characteristics. In May, temperatures range from a cool minimum of 4°C (40°F) to a pleasant maximum of 22°C (71°F), with an average of 12°C (55°F). The month experiences around 70 mm (2.7 inches) of precipitation over 11 days and maintains a relatively high humidity of 81%. By September, temperatures have warmed slightly, with a minimum of 9°C (49°F) and a maximum of 25°C (78°F), averaging 15°C (60°F). However, this month sees increased rainfall, totaling 158 mm (6.2 inches) across 13 days, while humidity dips to 76%. For a more detailed look at September weather, check this link: Nanaimo weather in September.

May and October present distinct weather characteristics, with May generally being warmer and drier. In May, temperatures range from a minimum of 4°C (40°F) to a maximum of 22°C (71°F), leading to a pleasant average of 12°C (55°F) with 70 mm (2.7 in) of precipitation over 11 days. In contrast, October sees slightly cooler temperatures, with a minimum of 3°C (37°F) and a maximum of 19°C (67°F), averaging 10°C (50°F). The month also brings significantly more rainfall, accumulating 194 mm (7.6 in) over 16 days, coupled with increased humidity at 88%. For a more detailed look at October weather, check out Nanaimo weather in October.

May and November present contrasting weather patterns, defining the transition from spring to winter. In May, temperatures range from a minimum of 4°C (40°F) to a pleasant maximum of 22°C (71°F), with an average of 12°C (55°F) and relatively lower precipitation of 70 mm (2.7 in) over 11 days at a humidity level of 81%. In stark contrast, November experiences much cooler temperatures, with a minimum of 1°C (33°F) and a maximum of just 12°C (55°F), averaging 7°C (45°F). Precipitation increases significantly to 304 mm (12.0 in) spread over 18 days, accompanied by a higher humidity level of 87%. For further insights into the weather conditions during this month, check out Nanaimo weather in November.

May and December present contrasting weather patterns. In May, temperatures range from a minimum of 4°C (40°F) to a pleasant average of 12°C (55°F), peaking at 22°C (71°F). With 70 mm (2.7 in) of precipitation over about 11 days and a humidity level of 81%, May offers a refreshing, mild climate. In sharp contrast, December experiences much colder temperatures, with a minimum of -7°C (20°F) and an average of only 4°C (40°F), reaching a maximum of 10°C (50°F). The month is significantly wetter, accumulating 252 mm (9.9 in) of precipitation over 20 days, and it has a higher humidity of 87%. For more details, you can check out the Nanaimo weather in December.

Compare Nanaimo's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Nanaimo

As spring gives way to summer in Nanaimo, May brings a delightful shift in weather that sets it apart from the preceding months. With warmer temperatures averaging a comfortable 12°C (55°F) and occasional peaks reaching 22°C (71°F), the city begins to shed the chill of earlier spring days. While the likelihood of rain remains, accounting for about 70 mm (2.7 in) over roughly half the month, the overall atmosphere becomes more vibrant and alive. Humidity levels rise to 81%, creating a lush environment ideal for blooming gardens, though it still offers much more pleasant days than the cooler, wetter months that precede it. This transitional period makes May a unique time to experience the natural beauty of Nanaimo. For more detailed insights into the weather patterns year-round, explore Nanaimo Climate.