Last updated: August 21, 2025
May in Setouchi, Japan heralds the arrival of warmth, with daytime temperatures peaking at a comfortable 25°C (77°F) and averaging around 18°C (65°F). The evenings can be cool, dipping to a refreshing 10°C (50°F). As the month unfolds, the region experiences an average of 131 mm (5.2 in) of precipitation over 9 days, making it one of the wetter periods. Humidity levels linger around 84%, creating a lush and vibrant atmosphere that enhances the beauty of Setouchi’s landscapes. Overall, May offers a delightful blend of pleasant temperatures and scenic views, perfect for outdoor exploration.
As spring fully blossoms, Setouchi, Japan experiences a delightful transition in May, marked by rising temperatures that invite outdoor exploration. During this month, the average temperature peaks at a comfortable 18°C (65°F), with daytime highs reaching a pleasant 25°C (77°F). The chilly grip of winter is notably released, as the minimum temperatures settle at 10°C (50°F), providing a gentle warmth that contrasts sharply with the bitter cold of earlier months. This trend of increasing warmth not only signals the arrival of summer but also encourages locals and tourists alike to bask in the vibrant landscapes and cultural festivities that define this enchanting region. As the weather continues to warm leading into June, May stands as an ideal time for visitors to enjoy Setouchi's natural beauty and rich heritage.
In May, Setouchi, Japan experiences a notable uptick in precipitation, with 131 mm (5.2 in) of rainfall spread across 9 days. This slight increase from April's 130 mm (5.1 in) marks a transition towards the wetter season, anticipating the heavier downpours of June, which typically sees an even more significant rise in rainfall. Interestingly, as spring gives way to summer, the frequency of rainy days begins to climb, laying the groundwork for the region's characteristic wet months ahead. The consistency in May’s rainfall is pivotal for local agriculture, as it nourishes the lush landscapes that define Setouchi's vibrant spring scenery.
In Setouchi, Japan, May ushers in a significant rise in humidity, reaching 84%, which marks a notable increase from the preceding months. This elevation sets the stage for the sultry summer ahead, as humidity levels remain on a steady upward trajectory into June—peaking at 86%—and then soaring to a humid 92% during July and August. Interestingly, while January kicks off the year with high humidity at 82%, it gradually wanes through the spring, only to rebound dramatically as summer approaches. The fluctuating patterns reflect a climate characterized by a marked increase in moisture as the year progresses, creating a lush, vibrant atmosphere that defines the region’s seasonal charm.
As May unfolds in Setouchi, Japan, residents and visitors alike should be aware of the extreme UV Index level of 11, matching the intensity seen in April and the following month of June. This significant rating indicates a burn time of just 10 minutes, underscoring the need for effective sun protection. Following months of increasing UV exposure, where January through March showed moderate to very high levels, the transition to extreme levels can be quite abrupt. It’s crucial to stay vigilant during this peak season and prioritize skin safety. For more detailed insights into the UV levels throughout the year, check out the Setouchi UV Index.
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Setouchi, Japan, experiences a remarkable transition in sunshine hours as the year unfolds. Starting with a modest 177 hours in January, the days gradually brighten, reaching 295 hours in May—the peak of spring. This upward trend is not only invigorating but also sets the stage for the summer months that follow. Though June sees a slight dip to 279 hours, the sun continues its radiant presence, with August boasting the highest sunshine at 306 hours. As autumn approaches, the daylight hours gradually decline, yet the overall trend remains a celebration of light, making Setouchi a beautiful destination bathed in warmth and brightness throughout the year.
In Setouchi, Japan, the likelihood of sunny weather takes a noticeable dip in May, with only a 31% chance of clear skies. This marks a decline from the relatively sunnier months of January through April, where probabilities hover between 42% and 54%. As spring transitions to early summer, the sunny outlook diminishes further, culminating in June's already low 26% chance of sunshine. Interestingly, May stands out not only for its lower chances but also as a precursor to the slightly more favorable conditions that return in the later months of the year, notably October and November, where optimism for sunny days resurfaces with probabilities exceeding 50%. Thus, if you’re planning to bask in the sun, it might be wise to look ahead to the fall months rather than May in this region.
In Setouchi, Japan, the daylight duration exhibits a captivating rhythm throughout the year. Starting with 10 hours in both January and February, the days gradually lengthen, reaching 11 hours in March and blossoming to 13 hours by April and May. This trend continues into the summer months, where June and July bask in 14 hours of daylight, allowing for extended outdoor enjoyment and exploration. As autumn approaches, daylight begins to recede, dropping to 12 hours in September and gradually tapering off to 9 hours by December. Overall, the seasonal variation not only highlights the shifting patterns of light but also enriches the cultural and natural experiences of the region.
In Setouchi, Japan, the month of May typically experiences a gentle breeze, with an average wind speed lingering at 4.0 m/s (about 9 mph). This consistent wind pattern mirrors the previous months of March and April, highlighting a period of calmness before the summer heat. Notably, as temperatures rise into summer, the wind speeds tend to decline, reaching their lowest in July at 2.9 m/s (6 mph) before slowly picking up again in the fall. The reliable winds of May provide a serene backdrop, inviting locals and tourists alike to embrace the beauty of the changing season in this picturesque region.
Weather in Setouchi varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Setouchi, focusing on differences in temperature, rainfall, humidity, and UV levels.
May and January present strikingly different weather patterns. In May, temperatures range from a minimum of 10°C (50°F) to a pleasant maximum of 25°C (77°F), with an average of 18°C (65°F), while January experiences much colder conditions, with temperatures dipping as low as -2°C (29°F) and averaging just 6°C (43°F) at its highest of 14°C (57°F). Additionally, May sees higher precipitation levels of 131 mm (5.2 in) over 9 days, compared to just 39 mm (1.5 in) over 5 days in January. Humidity also remains relatively high in both months, at 84% in May and 82% in January. For more detailed information, you can refer to Setouchi weather in January.
May and February present stark contrasts in weather conditions. In May, temperatures range from a minimum of 10°C (50°F) to a maximum of 25°C (77°F), with an average of 18°C (65°F), creating a warm and pleasant atmosphere. In contrast, February is much colder, with temperatures dipping as low as -3°C (28°F) and averaging only 6°C (43°F), peaking at 15°C (60°F). May also sees more precipitation, with 131 mm (5.2 in) over 9 days, while February has a relatively drier climate at 55 mm (2.2 in) across 6 days. Additionally, humidity remains slightly higher in May at 84%, compared to 79% in February. For more detailed insights into February weather, visit Setouchi weather in February.
May generally offers significantly warmer weather compared to March, with average temperatures rising from 9°C (49°F) in March to 18°C (65°F) in May. The maximum temperatures in May can reach 25°C (77°F), while March peaks at 18°C (64°F). Although both months experience precipitation, May has slightly more at 131 mm (5.2 in) over 9 days, compared to March's 108 mm (4.2 in) over 10 days. Additionally, humidity is higher in May at 84%, compared to 73% in March, contributing to a more humid feel as the season progresses. For more details on March weather, visit Setouchi weather in March.
When comparing the weather in May to that of April, it's clear that May is warmer and more humid. The minimum temperature in May is 10°C (50°F), significantly higher than April's 4°C (40°F), which contributes to an average temperature increase from 13°C (56°F) in April to 18°C (65°F) in May. While both months receive similar amounts of precipitation—131 mm (5.2 in) in May and 130 mm (5.1 in) in April—May experiences a higher humidity level at 84%, compared to April's 74%. This combination of warmth and humidity makes May feel more tropical and lively. For more detailed information on April weather specifics, you can check Setouchi weather in April.
May and June weather displays a notable transition in temperature and precipitation. In May, the temperature ranges from a minimum of 10°C (50°F) to a maximum of 25°C (77°F), with an average of 18°C (65°F). This month sees about 131 mm (5.2 in) of precipitation over 9 days, with humidity at 84%. In contrast, June experiences warmer temperatures, with a minimum of 15°C (59°F) and a maximum of 27°C (80°F), resulting in an average temperature of 22°C (71°F). The rainfall increases to 164 mm (6.5 in) across 12 days, accompanied by slightly higher humidity at 86%. For a closer look at the weather specifics, you can visit Setouchi weather in June.
May and July present quite contrasting weather patterns. In May, temperatures range from a low of 10°C (50°F) to a pleasant average of 18°C (65°F), with a maximum reaching 25°C (77°F). This month experiences a moderate amount of precipitation at 131 mm (5.2 in) over 9 days and boasts a humidity level of 84%.
In stark contrast, July sees much warmer temperatures, with minimums starting at 20°C (69°F) and averages soaring to 26°C (78°F), peaking at a high of 32°C (91°F). However, July is also the wettest month, with total precipitation of 303 mm (11.9 in) spread across 16 days and increased humidity at 92%. For more specific details on July weather in this region, you can check Setouchi weather in July.
In May, temperatures are milder, ranging from a minimum of 10°C (50°F) to a maximum of 25°C (77°F), with an average of 18°C (65°F). The month experiences 131 mm (5.2 in) of precipitation over about 9 days, accompanied by a relatively high humidity of 84%. In contrast, August brings warmer temperatures, with a minimum of 21°C (69°F) and a peak of 32°C (91°F), averaging around 28°C (82°F). The precipitation increases to 173 mm (6.8 in) over 12 days, and humidity rises slightly to 92%. For a detailed look at the August climate, you can visit Setouchi weather in August.
May and September present distinct weather profiles. In May, temperatures range from a minimum of 10°C (50°F) to a maximum of 25°C (77°F), with an average of 18°C (65°F). The month sees about 131 mm (5.2 in) of precipitation over 9 days, coupled with a humidity level of 84%. In contrast, September offers warmer conditions, with temperatures ranging from a minimum of 17°C (64°F) to a maximum of 31°C (89°F), averaging 24°C (76°F). However, it also brings increased rainfall, totaling approximately 222 mm (8.7 in) across 13 days, while humidity slightly rises to 87%. For more specific details about the weather in September, you can refer to Setouchi weather in September.
May and October offer pleasant yet distinct weather experiences. In May, temperatures range from a minimum of 10°C (50°F) to a comfortable average of 18°C (65°F), peaking at 25°C (77°F). The month is characterized by 131 mm (5.2 in) of precipitation over approximately 9 days and a humidity level of 84%. In contrast, October experiences slightly warmer temperatures, with a minimum of 12°C (54°F), an average of 19°C (67°F), and a maximum of 27°C (82°F). However, it also brings more rainfall, totaling 211 mm (8.3 in) across about 11 days, while humidity stays similar at 85%. For more specific insights into October conditions, check Setouchi weather in October.
In May, temperatures typically range from a minimum of 10°C (50°F) to a maximum of 25°C (77°F), with an average of 18°C (65°F). This month sees considerable rainfall, with 131 mm (5.2 in) over about 9 days, and the humidity remains high at 84%. In contrast, November experiences cooler temperatures, with a minimum of 6°C (43°F) and a maximum of 22°C (71°F), averaging 14°C (57°F). Rainfall is significantly lower in November, totaling 38 mm (1.5 in) over approximately 5 days, while humidity stays consistent at 84%. For more specific details on November weather in this region, you can visit Setouchi weather in November.
May and December present quite contrasting weather conditions. In May, temperatures range from a minimum of 10°C (50°F) to a pleasant maximum of 25°C (77°F), with an average of 18°C (65°F). This month also sees higher precipitation levels, totaling 131 mm (5.2 in) over about 9 days, along with high humidity at 84%. In contrast, December features cooler temperatures, with a minimum of 1°C (33°F) and an average of just 9°C (48°F), peaking at 19°C (66°F). Precipitation is significantly lower during December at 52 mm (2.0 in), occurring over 6 days, while humidity remains relatively stable at 82%. For a deeper look into December weather, you can check Setouchi weather in December.
As May unfolds in Setouchi, the weather shifts towards mild warmth and vibrant outdoor experiences, setting it apart from the cooler months of early spring. With an average temperature hovering around a comfortable 18°C (65°F), the days gradually become more inviting, allowing for exploration of the surrounding beauty. While precipitation is moderate, it is significantly less than the heavy rains experienced in the following summer months. The high humidity of 84% can create a lush environment, bringing life to the region's flora. This blend of warmth and occasional rain makes May an ideal time to enjoy the unique allure of Setouchi. For more insights on the season's weather patterns, visit Setouchi Climate.