May Weather in Minamata, Japan

Last updated: August 21, 2025

In May, Minamata, Japan experiences a delightful transition into warmer weather, with maximum temperatures reaching up to 30°C (87°F) and an average of 20°C (68°F). Although the minimum temperatures can dip to 7°C (45°F), the month is predominantly characterized by a humid atmosphere with an average humidity of 84%. Rainfall is also notable, with 234 mm (9.2 in) of precipitation spread over 12 days, making it an ideal time for lush greenery to flourish. Visitors can expect a vibrant mix of pleasant warmth and refreshing showers, highlighting the beauty of this coastal town in spring.

May Temperature in Minamata

In May, temperatures in Minamata, Japan, begin to warm significantly as spring gives way to early summer, creating a delightful atmosphere. The month opens with a minimum of 7°C (45°F), providing a comfortable base for outings, while the average temperature rises to 20°C (68°F), inviting residents and visitors alike to enjoy the blossoming landscape. As the days progress, the maximum temperature reaches up to 30°C (87°F), offering the perfect conditions for outdoor activities and sun-soaked adventures. This trend marks a clear transition from the cooler months of early spring, reflecting the steady climb in temperatures that characterizes Minamata's climate as it prepares for the heat of summer. The combination of mild mornings and warm afternoons makes May a particularly pleasant time to experience the beauty of Minamata.

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

The chart illustrates May temperature patterns in Minamata, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Minamata, 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).
JanFebMarAprMayJunJulAugSepOctNovDec444654616873808277685647
Data source: Temperature data for Minamata 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 Minamata

In May, Minamata experiences a significant surge in precipitation, with 234 mm (9.2 in) of rain falling across 12 days, marking one of the wettest months of the year. This increase not only reflects the transition into the rainy season but also highlights a steady upward trend from April's 143 mm (5.6 in). As the region prepares for the heavy rains of June and July, the May showers serve as a prelude to the intense weather that follows, creating a lush landscape and ensuring the area's vibrant ecosystems thrive. This pattern underscores the dynamic climate of Minamata, where each month brings its own unique atmospheric character.

May Precipitation Trends in Minamata

The chart displays monthly precipitation patterns in Minamata, 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 Minamata, May typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec611051491432343434652422281319690
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Minamata

In May, Minamata, Japan experiences a noticeable spike in humidity, reaching a robust 84%. This marks a significant increase from the more moderate levels of earlier months, with April at 78%. As the city transitions into summer, this upward trend continues, peaking in the following months with June and July seeing humidity levels soar to 86% and 92%, respectively. The rising moisture levels in May not only signal the onset of warmer weather but also set the stage for the humid summer months ahead, creating a lush and vibrant atmosphere for both residents and visitors alike.

May Average Humidity in Minamata

This chart illustrates the average monthly humidity levels in Minamata, 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 Minamata is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%71%71%78%84%86%92%91%84%83%81%79%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Minamata

In May, Minamata, Japan, experiences an extreme UV Index of 12, necessitating a cautious approach to sun exposure with a burn time of just 10 minutes. This pattern reflects a steady rise in UV intensity as the months progress, with April showing an equally intense level of 11. It's important to note that the UV Index in May represents a peak that persists into the following months—June and July also maintain a high of 12. As summer approaches, outdoor enthusiasts should be especially vigilant, using sun protection strategies to mitigate the risks associated with such levels of UV radiation. For more detailed information, visit Minamata UV Index.

Maximum UV Index Levels in Minamata for May

The chart shows the monthly maximum UV Index (UVI) for Minamata 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 Minamata typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec569111212121311864
Data source: Minamata 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 Minamata

In the picturesque town of Minamata, Japan, May shines as a radiant transition month, boasting an impressive 282 hours of sunshine. Following the steady increase from January to April, where daylight steadily escalates from 189 to 286 hours, May continues to bask in warm, bright days, albeit slightly dimming as summer approaches. The vibrant glow of May complements the subsequent summer months, where hours of sunlight peak in August at 305 hours, but it remains a significant contender as the sixth sunniest month of the year. This gentle ebb and flow of sunny hours throughout the seasons reflect Minamata's beautiful climate, making it a charming destination for sun-seekers and nature lovers alike.

Monthly Sunshine Duration in Minamata: May Highlighted

The May sunshine duration represents the total number of hours Minamata 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.
JanFebMarAprMayJunJulAugSepOctNovDec189h236h268h286h282h257h274h305h264h262h241h224h
Data source: Minamata May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Minamata During May

In Minamata, Japan, the likelihood of sunny weather takes an intriguing dip in May, with only a 24% chance of sunshine. This marks a significant decline from the preceding months of April, where the sun shines 39% of the time, highlighting a shift towards cloudier conditions as the year progresses. The transition towards the summer months in June and July sees even further reductions in sunny days, with chances falling to 20% and 18%, respectively. Interestingly, as autumn approaches, the likelihood of sun rebounds dramatically, peaking at 62% in October. This trend illustrates the dynamic weather patterns of Minamata, where seasonal changes bring varied experiences of sunshine throughout the year.

Percentage of Sunny Days in May in Minamata

The chart illustrates the percentage of sunny days in Minamata 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 Minamata experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec42%45%37%40%24%20%18%26%33%62%49%51%
Data source: Minamata May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Minamata in May

In Minamata, Japan, the evolution of daylight hours throughout the year showcases a clear and enchanting transition from winter's grasp into the embrace of summer. Starting with 10 hours of daylight in January, the days gradually lengthen, reaching 12 hours by April. A notable surge occurs in May, as daylight expands to a welcoming 13 hours, marking a significant shift towards the longer days of summer. This trend continues into June and July, with daylight peaking at 14 hours before gradually tapering off again in August. As the seasons shift once more, daylight hours retract gently to 12 hours in September, and down to 10 hours by November. This rhythmic cycle not only highlights the vibrant seasonal changes in Minamata but also invites residents and visitors alike to relish the beauty of each day as it unfolds.

Average Daylight Hours in Minamata for May

The chart illustrates the variation in daylight duration in Minamata throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 17m11h 1m11h 59m12h 58m13h 47m14h 12m14h13h 16m12h 20m11h 21m10h 30m10h 3m
Data source: Minamata daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Minamata

In Minamata, Japan, the month of May experiences a gentle breeze with an average wind speed of 2.5 m/s (6 mph), reminiscent of the preceding months in spring. The wind dynamics show a slight dip from the 3.0 m/s observed in February, stabilizing around 2.5 m/s from March through May. This pattern suggests a transitional period before the summer months, where winds tend to become lighter. With the average speed decreasing steadily into June, the calmness of May may offer a serene backdrop for outdoor activities, just before the warmer season begins to influence the region's weather more significantly. Overall, the trend indicates a relatively stable wind comfort during this time, inviting residents and visitors alike to enjoy the beautiful landscapes of Minamata.

Average May Wind Speed in Minamata

The chart displays monthly wind speed patterns in Minamata, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.73.02.52.72.5 m/s1.82.32.52.02.02.42.8
Data source: Minamata May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Minamata Compares to Other Months

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

May and January present contrasting weather conditions. In May, temperatures range from a mild 7°C (45°F) at night to a warm 30°C (87°F) during the day, with an average temperature of 20°C (68°F). This month also sees significant rainfall, accumulating 234 mm (9.2 in) over about 12 days, paired with high humidity levels of 84%. In contrast, January features much cooler temperatures, with a minimum of -4°C (25°F) and a maximum of 20°C (68°F), averaging only 7°C (44°F). Precipitation is considerably lower at 61 mm (2.4 in) across approximately 7 days, and humidity is also lower at 75%. For more about January's weather, check out Minamata weather in January.

May and February present starkly contrasting weather patterns. In May, temperatures range from a chilly 7°C (45°F) at night to a warm 30°C (87°F) during the day, with an average temperature of 20°C (68°F). This month sees significant rainfall, totaling 234 mm over 12 days, and high humidity levels at 84%. In contrast, February experiences much cooler temperatures, with a minimum of -3°C (27°F) and a maximum of 20°C (69°F), yielding an average of only 8°C (46°F). Precipitation is also lower in February, with 105 mm over 10 days and a humidity level of 71%. For a more detailed look at February's weather, check out Minamata weather in February.

May typically experiences warmer temperatures compared to March, with average highs reaching 20°C (68°F) in May, significantly higher than March's average of 12°C (54°F). While March has a lower maximum temperature of 26°C (78°F) compared to May's peak of 30°C (87°F), it also exhibits cooler minimum temperatures, starting at 1°C (34°F) versus May's 7°C (45°F). Precipitation is more frequent in May, with 234 mm (9.2 in) falling over 12 days, compared to March's 149 mm (5.9 in) over 14 days. Additionally, May has a higher humidity level of 84%, indicating a more humid environment than the 71% humidity typically experienced in March. For more detailed weather information for March, you can visit Minamata weather in March.

May generally experiences warmer temperatures compared to April, with average temperatures rising from 16°C (61°F) in April to 20°C (68°F) in May. The maximum temperatures also increase, reaching up to 30°C (87°F) in May compared to 27°C (82°F) in April. However, May sees a significant increase in precipitation, with 234 mm (9.2 in) falling over 12 days, compared to April's 143 mm (5.6 in) over 10 days. Additionally, humidity is slightly higher in May at 84%, compared to 78% in April, contributing to a more tropical feel as the month progresses. For more detailed weather insights, check out Minamata weather in April.

In comparing the weather of May and June, we observe a notable increase in temperatures and precipitation. May features a minimum temperature of 7°C (45°F) and an average of 20°C (68°F), reaching a maximum of 30°C (87°F), along with 234 mm (9.2 in) of precipitation over 12 days. In contrast, June starts off warmer, with a minimum of 14°C (58°F) and an average of 23°C (74°F), peaking at 31°C (89°F). However, it also sees increased rainfall, totaling 342 mm (13.5 in) across 18 days. Humidity remains relatively similar, slightly rising from 84% in May to 86% in June. For more details, check out Minamata weather in June.

In May, temperatures range from a cool minimum of 7°C (45°F) to a pleasant average of 20°C (68°F), peaking at a maximum of 30°C (87°F). The month experiences significant rainfall, with a total of 234 mm (9.2 in) distributed over 12 rainy days, and humidity levels averaging around 84%. In contrast, July is considerably warmer, with a minimum temperature of 18°C (65°F), an average of 27°C (80°F), and highs reaching 35°C (96°F). The summer month also sees a dramatic increase in rainfall, totaling 465 mm (18.3 in) over 22 days, resulting in higher humidity at 92%. For more detailed weather information, you can visit Minamata weather in July.

In comparing the weather of May and August, May typically experiences a cooler range of temperatures, with averages peaking at 20°C (68°F) and maximums reaching 30°C (87°F). In contrast, August brings warmer conditions, with an average temperature of 28°C (82°F) and highs soaring up to 35°C (96°F). Both months experience significant precipitation, but August sees slightly more, totaling 242 mm (9.5 in) over 17 rainy days compared to May's 234 mm (9.2 in) and 12 rainy days. Humidity levels are higher in August at 91%, compared to 84% in May, contributing to the summer's sweltering feel. For those interested in detailed August weather conditions in the area, visit Minamata weather in August.

In May, temperatures typically range from a minimum of 7°C (45°F) to a maximum of 30°C (87°F), with an average of 20°C (68°F), while September offers warmer conditions, with temperatures fluctuating from a minimum of 14°C (57°F) to a maximum of 34°C (94°F) and an average of 25°C (77°F). Both months experience significant precipitation, with May receiving 234 mm (9.2 in) over 12 days and September slightly less at 228 mm (9.0 in) over 16 days. Interestingly, humidity levels remain consistent in both months at 84%, making the air feel similarly muggy. For more details on weather conditions in September, you can check Minamata weather in September.

May and October display similar average temperatures, both hovering around 20°C (68°F), but they present distinct characteristics in other aspects. In May, temperatures can range from a cool 7°C (45°F) at minimum to a warm 30°C (87°F) at maximum, while October shows a slightly higher minimum of 9°C (48°F) and a peak of 32°C (89°F). Precipitation in May is notably higher, with 234 mm (9.2 in) over 12 days compared to October's 131 mm (5.2 in) spread across 10 days. Humidity levels are also quite close, with May at 84% and October at 83%. For more detailed information on October weather in Minamata, you can refer to Minamata weather in October.

May and November present contrasting weather patterns. In May, temperatures range from a minimum of 7°C (45°F) to a maximum of 30°C (87°F), with an average of 20°C (68°F). This month is often characterized by higher humidity at 84% and significant rainfall, totaling 234 mm (9.2 in) over 12 days. In contrast, November sees a cooler climate, with temperatures dipping to a minimum of 1°C (34°F) and an average of 14°C (57°F), peaking at 25°C (77°F). The overall atmosphere is less humid at 81%, and precipitation is also reduced to 96 mm (3.8 in) spread over just 9 days. For more specific details about November weather, you can check Minamata weather in November.

May and December present quite contrasting weather patterns. In May, temperatures range from a cool 7°C (45°F) at night to a warm average of 20°C (68°F) during the day, peaking at 30°C (87°F). This month is also characterized by high humidity at 84% and significant rainfall, with about 234 mm (9.2 in) of precipitation spread across 12 days. In contrast, December experiences a much cooler climate, with temperatures dipping to a minimum of -1°C (30°F) and averaging 8°C (47°F), reaching a maximum of 24°C (75°F). Precipitation is noticeably lower at 90 mm (3.5 in) over just 8 days, and humidity decreases slightly to 79%. For more detailed insights, you can refer to Minamata weather in December.

Compare Minamata's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Minamata

As May arrives in Minamata, temperatures begin to warm up, offering a refreshing transition from the cooler months. The average daily temperature climbs to a comfortable 20°C (68°F), marking a shift towards the balmy summer climate. However, with 234 mm of precipitation over the month, including 12 rain-soaked days, humidity levels soar to an average of 84%, creating a lush, vibrant environment. This is markedly different from the preceding months, where temperatures were cooler and precipitation less frequent. May's unique blend of warmth and moisture invigorates the landscape, making it a beautiful time to experience the stunning natural beauty of Minamata. For more detailed insights into the climate, visit Minamata Climate.