May Weather in Sapporo, Japan

Last updated: August 21, 2025

In May, Sapporo, Japan experiences a delightful transition as temperatures rise, boasting a maximum of 30°C (87°F) and an average of 12°C (53°F). However, the month starts with cooler nights, dipping to a minimum of 2°C (36°F). While this warming brings vibrant spring blooms, it also accompanies 94 mm (3.7 in) of precipitation over 12 days, contributing to the region's lush landscapes. With humidity levels peaking at 86%, visitors should be prepared for a mix of sun and rain, making May a month of refreshing beauty in Sapporo.

May Temperature in Sapporo

As spring blossoms into May, Sapporo experiences a refreshing warmth that marks a vibrant transition from the lingering chill of winter. Temperatures soar with a minimum of 2°C (36°F) and an inviting average of 12°C (53°F), peaking at a delightful 30°C (87°F). This month showcases the sharp contrast to the previous colder months, where temperatures hovered below freezing, especially in January and February. In May, the city basks in the sunshine, encouraging both residents and visitors to enjoy the outdoors amidst blooming landscapes. This rising warmth signals not only the approach of summer but also a time of vitality and activity in Sapporo, inviting all to revel in its seasonal charm.

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

The chart illustrates May temperature patterns in Sapporo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sapporo, 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).
JanFebMarAprMayJunJulAugSepOctNovDec212232415359686963513926
Data source: Temperature data for Sapporo 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 Sapporo

May marks a transitional phase in Sapporo, Japan, as it experiences increased precipitation compared to the preceding months. With 94 mm (3.7 in) of rain over 12 days, May stands out as a time when spring blossoms thrive, nourished by the fairly consistent rainfall. The gradual rise in precipitation from April's 87 mm (3.4 in) signifies a shift toward the wetter months ahead, as the city approaches its humid summer. This uptick not only enhances the lush scenery but also brings a refreshing contrast to the colder, drier winter months, setting the stage for vibrant outdoor activities as temperatures rise. By embracing both the rainfall and the rejuvenating atmosphere it brings, Sapporo welcomes the late spring with optimism and beauty.

May Precipitation Trends in Sapporo

The chart displays monthly precipitation patterns in Sapporo, 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 Sapporo, May typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec566386879412311318312612011779
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Sapporo

As spring gives way to summer, May in Sapporo, Japan, stands out with a notable increase in humidity, reaching 86%. This rise marks a shift from the more stable levels observed in the preceding months—January through April, which hovered around 81% to 84%. The transition into May hints at the impending summer months, where humidity levels continue to climb, peaking in July and August with impressive figures of 93% and 95% respectively. This upward trend in moisture not only signals warmer temperatures but also sets the stage for Sapporo's lush greenery and vibrant blooms, showcasing the city's natural beauty that flourishes with the arrival of spring.

May Average Humidity in Sapporo

This chart illustrates the average monthly humidity levels in Sapporo, 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 Sapporo is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%83%81%81%86%87%93%95%88%83%79%80%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Sapporo

As May rolls into Sapporo, Japan, the UV Index rises sharply to 9, indicating a very high exposure category, prompting a significant reduction in burn time to just 15 minutes. This marks a notable increase from the previous months; for instance, in April, the UV Index was 7 with the same burn time of 25 minutes. The transition to May highlights a pattern where UV exposure intensifies rapidly, from moderate levels in January and February to high in March and April, culminating in the peak of spring. Following this trend, the summer months maintain a high UV Index of 9 and even reach 10 in August. It's essential for residents and visitors alike to stay vigilant about sun protection during this period. For more details on daily UV levels, check the Sapporo UV Index.

Maximum UV Index Levels in Sapporo for May

The chart shows the monthly maximum UV Index (UVI) for Sapporo 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 Sapporo typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2367999108532
Data source: Sapporo 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 Sapporo

May in Sapporo, Japan, shines brightly with 309 hours of sunshine, a delightful peak that captures the essence of spring. Following a steady ascent from 287 hours in April, the month of May highlights the transition into warmer weather, paving the way for vibrant outdoor activities and blossoming flora. As daylight hours decrease slightly in June to 297 hours, May stands out as a time of abundant sunlight, where the city bursts into life after the long, chilly winter months. With each passing month, the increase in sunshine hours brings a palpable warmth to Sapporo, inviting both locals and travelers to revel in its exquisite beauty under the clear, sunny skies.

Monthly Sunshine Duration in Sapporo: May Highlighted

The May sunshine duration represents the total number of hours Sapporo 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.
JanFebMarAprMayJunJulAugSepOctNovDec133h189h243h287h309h297h321h292h269h234h177h163h
Data source: Sapporo May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Sapporo During May

In Sapporo, Japan, the likelihood of sunny weather in May takes a dip, with a sharply lower chance of sun at just 24% compared to the preceding months. April offers a more promising 40% chance, hinting at the gradual transition into warmer weather. As the city welcomes June, sun seekers can rejoice as the likelihood climbs to 42%, marking the beginning of a sunnier streak. This seasonal shift reflects a broader trend of increasing sunshine from the chill of winter through spring, culminating in the vibrant summer months. Thus, while May may not boast the sunniest days, it paves the way for the brighter skies that follow.

Percentage of Sunny Days in May in Sapporo

The chart illustrates the percentage of sunny days in Sapporo 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 Sapporo experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec29%25%35%40%24%42%39%28%32%32%35%32%
Data source: Sapporo May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Sapporo in May

As spring unfolds in Sapporo, May heralds a delightful increase in daylight, offering 14 hours of sunshine, a significant jump from the 13 hours in April. This boost not only signals the approaching summer but also invites residents and visitors alike to embrace longer outdoor activities and events. Moving into June, daylight peaks at 15 hours, maximizing opportunities for exploration and enjoyment of the vibrant city. Interestingly, as the year progresses, daylight starts to taper off after July, with 14 hours in that month transitioning to 13 in August, and then gradually down to 9 hours by November and December, marking the return of the colder, darker months. This rhythmic ebb and flow of daylight throughout the year reflects the dynamic nature of Sapporo’s climate and seasonal experiences.

Average Daylight Hours in Sapporo for May

The chart illustrates the variation in daylight duration in Sapporo throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 23m10h 30m11h 56m13h 24m14h 39m15h 17m14h 58m13h 52m12h 28m11h9h 43m9h 2m
Data source: Sapporo daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Sapporo

In Sapporo during May, the average wind speed hovers at 2.9 m/s (6 mph), reflecting a continuation of gentle breezes that characterize the transition into late spring. This month marks a slight dip from the more invigorating winds of April, which saw an increase to 3.3 m/s. As temperatures rise, the wind begins to calm, foreshadowing the tranquil summer months ahead. Interestingly, the wind speeds remain consistent, with most months ranging between 2.3 to 3.3 m/s, highlighting Sapporo's generally mild and steady wind conditions throughout the year. This gentle airflow enhances the city's vibrant cherry blossom scenery, making May a delightful time for outdoor activities and exploration.

Average May Wind Speed in Sapporo

The chart displays monthly wind speed patterns in Sapporo, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.93.12.93.32.9 m/s2.32.42.32.52.62.93.0
Data source: Sapporo May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Sapporo Compares to Other Months

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

May and January present strikingly different weather conditions. In May, temperatures range from a low of 2°C (36°F) to a high of 30°C (87°F), with an average of 12°C (53°F). The month sees approximately 94 mm (3.7 in) of precipitation, occurring over 12 days and accompanied by high humidity at 86%. In contrast, January is characterized by much colder temperatures, with a minimum of -19°C (-2°F) and a maximum of just 4°C (40°F), averaging -6°C (21°F). This month has less precipitation, totaling 56 mm (2.2 in) over 13 days, and slightly lower humidity at 84%. For more detailed information, you can check Sapporo weather in January.

May and February present stark contrasts in weather. In May, temperatures range from a chilly 2°C (36°F) at night to a warm 30°C (87°F) during the day, with an average temperature of 12°C (53°F). The month sees about 94 mm (3.7 in) of precipitation across 12 days, accompanied by high humidity levels of 86%. In contrast, February is much colder, with temperatures dipping to a minimum of -17°C (2°F) and a maximum of only 5°C (42°F), resulting in an average of -5°C (23°F). Although February experiences less rainfall at 63 mm (2.5 in), it has more precipitation days, totaling 18. Humidity in February is slightly lower at 83%. For more specifics on February weather, you can check Sapporo weather in February.

In comparing the weather in May and March, it's clear that May offers much warmer temperatures, with averages around 12°C (53°F) and highs reaching 30°C (87°F), while March sees much cooler conditions, averaging at 0°C (32°F) and peaking at 14°C (58°F). Both months experience considerable precipitation, with May receiving 94 mm (3.7 in) over approximately 12 days, slightly surpassing March’s 86 mm (3.4 in) spread across 14 days. Additionally, May's humidity is higher at 86%, compared to March's 81%, contributing to a more muggy atmosphere. For further insights into March's conditions, you can visit Sapporo weather in March.

When comparing the weather in May and April, it’s clear that May experiences a much warmer climate, with average temperatures rising from 5°C (41°F) in April to 12°C (53°F) in May. The maximum temperature in May can reach as high as 30°C (87°F), while April peaks at a more moderate 20°C (69°F). Precipitation levels remain similar, with May receiving 94 mm (3.7 in) over 12 days compared to April's 87 mm (3.4 in) over 13 days, though May's humidity is slightly higher at 86% compared to April's 81%. For more detailed information, you can check out Sapporo weather in April.

The weather in May and June exhibits notable differences, particularly in temperature and precipitation patterns. May experiences a wider temperature range with a minimum of 2°C (36°F) and a maximum of 30°C (87°F), leading to an average of 12°C (53°F). In contrast, June settles into a milder range, with temperatures ranging from a minimum of 6°C (42°F) to a maximum of 26°C (80°F) and an average of 15°C (60°F). Precipitation increases in June, reaching 123 mm (4.8 in) over the same number of rainy days as May, which saw 94 mm (3.7 in) of rain. The humidity remains fairly consistent, with May at 86% and June slightly higher at 87%. For a detailed look at June weather, you can visit Sapporo weather in June.

In May, temperatures in Sapporo range from a cool 2°C (36°F) at their lowest to a pleasant 30°C (87°F) at their peak, with an average of 12°C (53°F). The month experiences a total precipitation of 94 mm (3.7 in) over 12 days, and the humidity can feel quite high at 86%. By July, the weather warms up, with minimum temperatures rising to 9°C (49°F) and average temperatures hitting 20°C (68°F), peaking at 31°C (88°F). Rainfall increases slightly to 113 mm (4.5 in), still spread over 12 days, and humidity remains high at 93%. For more details, you can visit Sapporo weather in July.

May and August display distinct weather characteristics that reflect the transition from spring to summer. In May, temperatures range from a minimum of 2°C (36°F) to a maximum of 30°C (87°F), with an average of 12°C (53°F). This month experiences about 94 mm (3.7 in) of precipitation over 12 days, combined with high humidity levels at 86%.

Conversely, August sees warmer temperatures, with a minimum of 10°C (51°F) and an average of 21°C (69°F), reaching up to 31°C (88°F). Precipitation increases significantly to 183 mm (7.2 in) across 14 days, and humidity rises to 95%.

For a detailed look at August weather, you can visit Sapporo weather in August.

May and September present contrasting yet mild weather conditions. In May, temperatures range from a cool 2°C (36°F) at night to a warm 30°C (87°F) during the day, with an average of 12°C (53°F). This month experiences about 94 mm (3.7 in) of precipitation over 12 days, with humidity averaging at 86%. Conversely, September offers slightly higher nighttime temperatures, starting at 4°C (40°F), and milder daytime warmth with a maximum of 29°C (84°F). The average temperature is 17°C (63°F), accompanied by increased rainfall of 126 mm (5.0 in) over 14 days and a humidity of 88%. For a detailed look at the weather conditions during September, you can check Sapporo weather in September.

In comparing the weather of May and October, May generally offers warmer temperatures, with an average of 12°C (53°F) and daytime highs reaching up to 30°C (87°F). In contrast, October tends to be cooler, averaging 11°C (52°F) and peaking at 24°C (76°F). Both months experience significant precipitation, but October has a higher total at 120 mm (4.7 in) over about 17 days, compared to May's 94 mm (3.7 in) over 12 days. Humidity levels are quite similar, with May at 86% and October slightly lower at 83%. For more details on October weather, you can explore Sapporo weather in October.

May and November present distinctly different weather patterns. In May, temperatures range from a minimum of 2°C (36°F) to a maximum of 30°C (87°F), with an average of 12°C (53°F), creating a pleasant spring atmosphere. The month experiences about 94 mm (3.7 in) of precipitation over 12 days, accompanied by high humidity at 86%. In contrast, November brings cooler temperatures, with a minimum of -8°C (18°F) and a maximum of 17°C (62°F), averaging only 4°C (39°F). This month is wetter, receiving 117 mm (4.6 in) of rain over 20 days, while humidity is lower at 79%. To learn more about the weather dynamics during this month, you can check Sapporo weather in November.

In May, temperatures in Sapporo range from a chilly 2°C (36°F) at their lowest to a warm 30°C (87°F) at the high end, averaging around 12°C (53°F). The month experiences significant rainfall, with 94 mm (3.7 in) of precipitation over about 12 days, contributing to a high humidity of 86%. In contrast, December temperatures plunge to a minimum of -15°C (6°F) and peak at 11°C (53°F), with an average of -3°C (26°F). This month sees less total precipitation at 78 mm (3.1 in), spread over 22 days, and a lower humidity of 80%. For a closer look at December's conditions, you can check Sapporo weather in December.

Compare Sapporo's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Sapporo

As May arrives in Sapporo, the city transitions into a vibrant spring in stark contrast to the lingering chill of early months. Temperatures begin to warm, bringing a refreshing average of around 12°C, but can soar up to a balmy 30°C on sunny days. However, with 12 rainy days and a humidity level of 86%, visitors should prepare for occasional showers that lighten the mood rather than dampen it. This combination of warmth and precipitation sets May apart, creating a lively atmosphere perfect for enjoying the blooming landscapes. For a deeper understanding of what to expect year-round, check out Sapporo Climate.