May Weather in Wakkanai, Japan

Last updated: August 21, 2025

Experience the vibrant May weather in Wakkanai, Japan, where temperatures range from a pleasant maximum of 21°C (70°F) to a cool minimum of 1°C (35°F), with an average settling around 10°C (50°F). This month witnesses approximately 75 mm (3.0 in) of precipitation over 10 days, contributing to the region’s lush landscapes and vibrant flora. With a high humidity level of 88%, the air is filled with a refreshing dampness, making Wakkanai a unique destination for those who appreciate the beauty of spring in northern Japan.

May Temperature in Wakkanai

In May, Wakkanai, Japan, truly begins to shed its winter coat as temperatures rise considerably, making it a delightful time to visit. With a minimum of 1°C (35°F) and an average of 10°C (50°F), residents and travelers alike can finally enjoy the outdoors. The month boasts a maximum temperature reaching 21°C (70°F), paving the way for blossoming blooms and vibrant landscapes. Compared to the preceding months, May marks a significant turning point as the frigid chill of winter gives way to the mild warmth of spring, showcasing the region's remarkable climate transition. The gradual climb in temperatures not only invites people outside but also sets the stage for the upcoming warmth of summer, making May a perfect time to explore Wakkanai's natural beauty and cultural offerings.

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

The chart illustrates May temperature patterns in Wakkanai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Wakkanai, May typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec242433425055646764534129
Data source: Temperature data for Wakkanai 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 Wakkanai

In May, Wakkanai experiences a notable uptick in precipitation, with 75 mm (3.0 in) of rainfall spread across 10 days. This increase marks a transition from the drier months of April, which recorded only 52 mm (2.0 in) over 9 days. The steady rise in moisture sets the stage for the lush greenery that follows in June, which boasts an even higher 79 mm (3.1 in). The precipitation pattern in Wakkanai reveals a gradual progression towards the wetter summer months, highlighting May as a pivotal point in this seasonal shift. With May's rains nurturing the landscape, the region prepares for the vibrant growth and the more robust rainfall characteristic of the approaching summer.

May Precipitation Trends in Wakkanai

The chart displays monthly precipitation patterns in Wakkanai, 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. In Wakkanai, May typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec7169705275799014484110118107
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Wakkanai

In Wakkanai, Japan, the month of May brings a notable shift in humidity, reaching a peak of 88%. This figure is slightly higher than the preceding months, maintaining the city's signature dampness that starts to become more pronounced as spring transitions to summer. Following a steady pattern from January through April, where humidity hovered around 83-87%, May’s increase sets the stage for the upcoming summer months, which are characterized by even higher humidity levels peaking at 93% in July and 94% in August. This gradual rise highlights Wakkanai's significant climatic trend of increasing humidity, showcasing the region's unique weather patterns as it moves into a more humid season.

May Average Humidity in Wakkanai

This chart illustrates the average monthly humidity levels in Wakkanai, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Wakkanai is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%84%83%84%88%88%93%94%86%79%77%83%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Wakkanai

As May arrives in Wakkanai, Japan, residents and visitors alike should be prepared for a significant jump in sun exposure, as the UV Index escalates to 8, classifying it in the very high category. This sharp increase from April's moderate conditions, where the index peaked at 6, signals a dramatic shift in solar intensity. With a burn time of just 15 minutes, it's crucial to prioritize sun safety during this month. The trend observed in the days leading into summer shows a consistent rise in UV levels, peaking in June and July, and hinting at the growing importance of sun protection as we move toward the warmer months. For further insights and precautions, you can explore the Wakkanai UV Index.

Maximum UV Index Levels in Wakkanai for May

The chart shows the monthly maximum UV Index (UVI) for Wakkanai 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. In May, the maximum UV index in Wakkanai typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689987431
Data source: Wakkanai 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 Wakkanai

As spring transitions into summer, May emerges as a standout month in Wakkanai, Japan, basking in 301 hours of sunshine. This vibrant increase in daylight follows a progressive climb from January's modest 112 hours to April's 288 hours, showcasing a significant shift toward warmer and brighter days. The sun-soaked month not only marks the peak of delightful spring weather but also sets the stage for the sunniest days ahead in July, boasting an impressive 322 hours. This upward trend emphasizes Wakkanai's embrace of sunshine, inviting residents and visitors alike to revel in the natural beauty that flourishes during this enchanting season.

Monthly Sunshine Duration in Wakkanai: May Highlighted

The May sunshine duration represents the total number of hours Wakkanai 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.
JanFebMarAprMayJunJulAugSepOctNovDec112h180h243h288h301h283h322h275h283h245h181h164h
Data source: Wakkanai May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Wakkanai During May

In Wakkanai, Japan, the likelihood of sunny weather in May sits at around 27%, which marks a slight decrease compared to the preceding months of April, where the sun graces the city 39% of the time, and a modest dip from the summer months ahead. As spring unfolds, May reflects a transitional phase, hinting at the more favorable conditions that emerge in June with a significant 42% chance of sunshine. Interestingly, while May is not the sunniest month, it does serve as a reminder of the brighter days just around the corner, as the city inches towards the peak of sunny summer weather. Thus, for those seeking a balance of blooming flowers and occasional sunshine, May in Wakkanai offers a glimpse of the sun-kissed days ahead.

Percentage of Sunny Days in May in Wakkanai

The chart illustrates the percentage of sunny days in Wakkanai 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 Wakkanai experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec17%14%35%39%27%42%37%40%45%40%30%25%
Data source: Wakkanai May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Wakkanai in May

As spring unfolds in Wakkanai, Japan, May marks a delightful increase in sunlight, boasting an impressive 14 hours of daylight. This rising trend continues from the earlier months, starting with 11 hours in March and blossoming to 13 hours in April, creating a beautiful backdrop for outdoor activities and seasonal festivities. Following May, the daylight peaks in June at 15 hours, before gradually tapering off through the summer months. This gradual transition highlights the region's long, bright days, offering residents and visitors ample opportunity to embrace the vibrant environment and partake in the beauty of nature. As summer wanes, daylight starts to decline in September, reminding us of the cyclical rhythm of the seasons, eventually returning to shorter days by November and December.

Average Daylight Hours in Wakkanai for May

The chart illustrates the variation in daylight duration in Wakkanai throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 8m10h 22m11h 55m13h 31m14h 53m15h 35m15h 14m14h 1m12h 30m10h 54m9h 30m8h 46m
Data source: Wakkanai daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Wakkanai

In Wakkanai, Japan, the winds of May gently taper off, presenting an average speed of 5.2 m/s (12 mph), which marks a slight decrease from the breezy April days. This trend of diminishing wind continues into the summer months, with July experiencing the calmest winds at 4.0 m/s (9 mph), inviting a more tranquil atmosphere. As the seasons shift, the wind picks up again in the fall, with November and December returning to more vigorous speeds of 6.2 m/s and 6.3 m/s, respectively. Overall, May showcases a transitional phase, balancing the last whispers of spring’s briskness before summer settles in, revealing the dynamic nature of Wakkanai's climatic rhythms.

Average May Wind Speed in Wakkanai

The chart displays monthly wind speed patterns in Wakkanai, 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.
JanFebMarAprMayJunJulAugSepOctNovDec6.46.35.86.15.2 m/s5.44.05.13.85.36.26.3
Data source: Wakkanai May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Wakkanai Compares to Other Months

Weather in Wakkanai varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Wakkanai, focusing on differences in temperature, rainfall, humidity, and UV levels.

In comparing the weather of May and January, there is a stark contrast in temperatures. May experiences a much milder climate, with average temperatures ranging from 1°C (35°F) at its lowest to a pleasant 21°C (70°F) at its peak, while January sees much colder conditions, with average temperatures between -13°C (9°F) and 5°C (41°F). Precipitation is relatively similar, with May receiving about 75 mm (3.0 in) over 10 rainy days, compared to January's 71 mm (2.8 in) spread over a more frequent 18 days. Humidity remains high in both months, at 88% in May and 87% in January, contributing to a damp atmosphere. For more details on January weather, you can visit Wakkanai weather in January.

Comparing the weather in May and February reveals stark contrasts in temperatures and overall conditions. In May, temperatures range from a chilly 1°C (35°F) at night to a pleasant 21°C (70°F) during the day, with an average temperature of 10°C (50°F). The month experiences about 75 mm (3.0 in) of precipitation over 10 days, accompanied by relatively high humidity at 88%. In contrast, February is much colder, with temperatures dipping as low as -15°C (5°F) and peaking at only 5°C (41°F), averaging -4°C (25°F). With 69 mm (2.7 in) of precipitation spread over 19 days and 84% humidity, February feels more frigid and damp. For a more detailed look at February weather in this region, you can visit Wakkanai weather in February.

In March, Wakkanai experiences significantly colder temperatures, with a minimum of -9°C (17°F) and an average of 0°C (33°F), while in May, temperatures rise notably to a minimum of 1°C (35°F) and an average of 10°C (50°F). The maximum temperature in March reaches 11°C (51°F), compared to a warmer max of 21°C (70°F) in May. Although both months have similar precipitation levels, with March receiving 70 mm (2.8 in) over 14 days and May receiving slightly more at 75 mm (3.0 in) over 10 days, the humidity remains relatively high in both months, with March at 83% and May at 88%. For more detailed insights into March weather, visit Wakkanai weather in March.

In comparing the weather of April and May, we see a noticeable warming trend as spring progresses. April's temperatures range from a chilly minimum of -6°C (22°F) to a maximum of 17°C (63°F), while May offers a much milder range with minimums of 1°C (35°F) and maximums reaching 21°C (70°F). Precipitation is slightly higher in May at 75 mm (3.0 in) over 10 days, compared to April's 52 mm (2.0 in) over 9 days. Additionally, humidity remains relatively high in both months, with May at 88% and April at 84%. For more detailed insights, you can refer to Wakkanai weather in April.

In comparing the weather in May and June, we can observe a gradual warming trend. May experiences a minimum temperature of 1°C (35°F) and an average of 10°C (50°F), while June sees a slight increase with a minimum temperature of 4°C (40°F) and an average of 13°C (55°F). The maximum temperatures remain quite similar, with May peaking at 21°C (70°F) and June at 22°C (71°F). Precipitation shows a slight uptick in June, with 79 mm (3.1 in) over 11 days compared to May's 75 mm (3.0 in) over 10 days, indicating slightly wetter conditions. Humidity remains consistent at 88% for both months. For a closer look at what June has to offer, you can visit Wakkanai weather in June.

May and July present distinctly contrasting weather patterns. In May, temperatures range from a chilly minimum of 1°C (35°F) to a pleasant maximum of 21°C (70°F), with an average of 10°C (50°F) and a high humidity level of 88%. Precipitation is moderate, with about 75 mm (3.0 in) falling over 10 days. In contrast, July sees a significant increase in warmth, with temperatures varying from a minimum of 9°C (49°F) to a high of 30°C (86°F), resulting in an average temperature of 18°C (65°F). Although July is slightly wetter with 90 mm (3.5 in) of rain across just 8 days, the humidity rises to 93%, making the air feel quite heavy. For more details, check out the Wakkanai weather in July.

May and August present markedly different weather conditions. In May, temperatures range from a chilly minimum of 1°C (35°F) to a comfortable maximum of 21°C (70°F), with an average of 10°C (50°F). The month experiences a substantial amount of precipitation, totaling 75 mm (3.0 in) over approximately 10 days, and humidity levels hover around 88%.

Conversely, August is significantly warmer, with minimum temperatures starting at 14°C (57°F) and soaring up to 28°C (84°F), while the average temperature is 19°C (67°F). Rainfall increases to 144 mm (5.7 in) across about 13 days, and humidity rises slightly to 94%. The contrast in temperature and precipitation highlights the transition from the cooler, wetter spring month of May to the warmer, more humid summer month of August. For a detailed overview of August weather in Wakkanai, you can check Wakkanai weather in August.

In May, temperatures range from a cool 1°C (35°F) to a pleasant maximum of 21°C (70°F), with an average of 10°C (50°F). The month experiences about 75 mm (3.0 in) of precipitation over approximately 10 days, coupled with a high humidity level of 88%. In contrast, September offers warmer temperatures, with a minimum of 9°C (49°F) and an average of 18°C (64°F), peaking at 27°C (82°F). The month sees slightly more rainfall, totaling 84 mm (3.3 in) across 11 days, and the humidity remains quite similar at 86%. For more detailed insights, you can check Wakkanai weather in September.

May and October display similar maximum temperatures, peaking at around 21°C (70°F), but May typically starts off cooler with a minimum of 1°C (35°F) compared to October's slightly higher minimum of 3°C (38°F). The average temperatures also reflect a mild increase in October, averaging 12°C (54°F) against May's 10°C (50°F). Precipitation is more prominent in October, accumulating to 110 mm (4.3 in) over 14 days, while May sees less rainfall at 75 mm (3.0 in) across 10 days. Additionally, October has lower humidity levels at 79%, making it feel a tad drier than the humid conditions of May, where humidity reaches 88%. For more detailed insights into the weather, check out Wakkanai weather in October.

May and November present contrasting weather patterns. In May, temperatures range from a minimum of 1°C (35°F) to a maximum of 21°C (70°F), with an average of 10°C (50°F), marking the arrival of spring. The month sees approximately 75 mm (3.0 in) of precipitation over about 10 days, and a high humidity level of 88% adds to the springtime feel.

In stark contrast, November experiences colder temperatures, with a minimum of -6°C (21°F) and an average of 5°C (41°F), peaking at 16°C (60°F). This month is also wetter, receiving about 118 mm (4.6 in) of rainfall spread over 19 days, though the humidity is lower at 77%. For more specific insights into November weather, you can visit Wakkanai weather in November.

May and December present stark contrasts in weather patterns. In May, temperatures range from a chilly 1°C (35°F) at night to a pleasant 21°C (70°F) during the day, with an average of 10°C (50°F). The month experiences moderate precipitation of about 75 mm (3.0 in) over 10 days, paired with high humidity levels at 88%. In contrast, December is much colder, with temperatures dipping as low as -12°C (10°F) and peaking at 11°C (52°F), averaging -2°C (29°F). This month sees increased precipitation of 107 mm (4.2 in), spread over 24 days, although the humidity is slightly lower at 83%. For more details, you can check out Wakkanai weather in December.

Compare Wakkanai's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Wakkanai

As May unfolds in Wakkanai, the city experiences a refreshing transition into spring, characterized by a notable increase in temperatures compared to the cooler preceding months. While the days gradually warm up, with mild afternoons inviting glimpses of sunshine, the still-chilly evenings remind residents that winter’s grip is not entirely gone. With an average humidity of 88% and around 10 days of precipitation, May can feel quite damp, but this moisture nourishes the budding landscape. Overall, May serves as a delightful prelude to summer, offering a vibrant atmosphere that stands in stark contrast to the harsher winter months. For a comprehensive understanding of Wakkanai's climate and seasonal changes, visit Wakkanai Climate.