April Weather in Sendai, Japan

Last updated: August 21, 2025

April in Sendai, Japan offers a delightful transition into spring, showcasing a maximum temperature of 26°C (80°F), while the average hovers around a crisp 10°C (50°F). With a minimum temperature dipping to -2°C (29°F), this month presents a wide range of weather experiences. April also sees approximately 109 mm (4.3 in) of precipitation spread over 12 days, contributing to the region's lush bloom. The humidity level stands at a comfortable 75%, making it an ideal time for outdoor exploration and enjoying the vibrant seasonal changes that Sendai has to offer.

April Temperature in Sendai

In April, Sendai, Japan, awakens from winter's chill, with temperatures reflecting the beauty of spring’s arrival. The month sees a notable increase, with average temperatures climbing to 10°C (50°F), as the minimum dips slightly to -2°C (29°F). With daily highs reaching up to 26°C (80°F), residents and visitors alike revel in the warmth, enjoying blossoming cherry trees and vibrant outdoor activities. This transition is significant compared to the preceding months, heralding a shift from cold and frosty days to milder and more inviting weather, setting the stage for the even warmer months ahead.

April Weather in Sendai: Daily Temperature Highs, Lows, and Averages

The chart illustrates April temperature patterns in Sendai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sendai, April 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).
JanFebMarAprMayJunJulAugSepOctNovDec323442506166747769594837
Data source: Temperature data for Sendai 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.

April Precipitation in Sendai

In April, Sendai experiences a notable amount of rainfall, with 109 mm (4.3 in) recorded over 12 days. This precipitation level is slightly lower than the preceding month, March, which saw a peak of 112 mm (4.4 in), yet it remains significant in the context of the spring season. As flowers begin to bloom and the city shakes off the chill of winter, April's rain plays a crucial role in nurturing the landscape. Looking ahead, May follows closely with similar precipitation levels at 107 mm (4.2 in), marking a continued trend of moisture as the region transitions into the warmer months. Overall, April serves as a pivotal month within the seasonal cycle, balancing rainfall with the energizing arrival of spring.

April Precipitation Trends in Sendai

The chart displays monthly precipitation patterns in Sendai, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Sendai, April typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec65531121091071012322141502084067
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Sendai

April in Sendai, Japan, marks the beginning of a gradual shift in humidity as the weather transitions into spring. With an average humidity of 75%, April is notably less humid than the preceding months, which experienced levels around 77% in March and 80% in May. This decline in humidity signals a brief respite before the summer months set in, where humidity levels soar to a muggy 92% in July and August. The overall trend highlights a dynamic environment where Sendai's lush, temperate climate fluctuates throughout the year, offering residents and visitors alike a refreshing, if fleeting, taste of drier air in April.

April Average Humidity in Sendai

This chart illustrates the average monthly humidity levels in Sendai, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Sendai is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%79%77%75%80%87%92%92%86%82%79%80%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Sendai

As spring unfolds in Sendai, Japan, April ushers in a significantly increased UV Index of 8, classified as very high. This marks a notable leap from the previous months, where UV levels hovered between moderate and high. With a burn time of just 15 minutes, the longer days mean sun-seekers must take extra precautions to protect their skin. This rising trend continues into May and June, where UV exposure intensifies to extreme levels, emphasizing the importance of sun safety as warmer weather approaches. For detailed insights on sun exposure and safety measures, check out the Sendai UV Index.

Maximum UV Index Levels in Sendai for April

The chart shows the monthly maximum UV Index (UVI) for Sendai in April, 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 April, the maximum UV index in Sendai typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3478101011119643
Data source: Sendai April 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.

April Sunshine in Sendai

As April unfolds in Sendai, Japan, the city basks in 271 hours of sunshine, marking a delightful transition into the vibrant spring season. After a steady climb from 167 hours in January to 258 hours in March, the sun continues to shine brighter, heralding warmer days ahead. This increase in sunlight sets the stage for May to eclipse April, reaching an impressive 292 hours. The months that follow maintain a robust presence of sunshine, with June and August staying close to April's light, while the summer's peak draws slightly back into 254 hours in July. This trend highlights a compelling seasonal rhythm in Sendai, where each month brings a gradual increase in sunlight, inviting residents and visitors alike to cherish the beauty of springtime in full bloom.

Monthly Sunshine Duration in Sendai: April Highlighted

The April sunshine duration represents the total number of hours Sendai experiences direct sunlight during the month of April, excluding cloudy or obstructed periods. This chart compares the sunshine duration of April with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec167h222h258h271h292h280h254h271h247h210h218h204h
Data source: Sendai April Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Sendai During April

April in Sendai, Japan, offers a 43% chance of sunny weather, a slight uptick from the previous month of March, which sees only 33% sunshine. As spring unfolds, the likelihood of sun in April stands out in contrast to the dreariness of June and July, both dropping to 21%. Interestingly, November shines brightly with the highest probability of sunshine at 55%, hinting at a seasonal transition that offers both surprises and delights. Overall, April serves as a bridge between the colder months and the summer heat, making it a promising time for those seeking to soak up some sun.

Percentage of Sunny Days in April in Sendai

The chart illustrates the percentage of sunny days in Sendai throughout the year, with April 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 Sendai experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec39%49%33%44%32%21%21%24%29%38%55%39%
Data source: Sendai April chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Sendai in April

As spring unfolds in Sendai, Japan, April brings a delightful increase in daylight, with the sun gracing the skies for 13 hours each day. This surge marks a significant shift from the shorter, winter months, where daylight lingered at just 9 hours in January. The gradual lengthening of days is evident from February to March, and by April, residents can fully embrace the vibrancy of longer evenings. Following April, May and June maintain this trend, boasting 14 hours of daylight, creating a perfect atmosphere for outdoor activities as nature explodes into color. As summer approaches and daylight begins to subtly wane in August, the warmer months remind us of the beauty of transition in Sendai throughout the year.

Average Daylight Hours in Sendai for April

The chart illustrates the variation in daylight duration in Sendai throughout the year, with April highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 49m10h 45m11h 57m13h 11m14h 14m14h 45m14h 29m13h 34m12h 24m11h 10m10h 6m9h 32m
Data source: Sendai daylight hours, calculated by summing the hours between sunrise and sunset for each day.

April Winds in Sendai

In Sendai, Japan, April brings a gentle embrace of wind, with an average speed holding steady at 3.3 m/s (7 mph)—similar to March's mild breezes. As the city transitions from the brisk chill of winter to the budding warmth of spring, this consistency hints at a sense of tranquility. Notably, the spring winds are among the fastest in the early months of the year, with January peaking at 3.0 m/s and February rising to 3.8 m/s. However, as temperatures climb into summer, the winds begin to soften, with May dipping to 2.8 m/s. This gradual decline marks a trend towards calm, inviting residents and visitors alike to enjoy the beauty of blossoming flora against a backdrop of light, refreshing gusts.

Average April Wind Speed in Sendai

The chart displays monthly wind speed patterns in Sendai, with values for each month shown alongside April's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how April's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.03.83.33.3 m/s2.82.11.92.22.32.42.53.2
Data source: Sendai April wind data, generated using information from the Copernicus Climate Change Service.

How April Weather in Sendai Compares to Other Months

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

April and January present stark contrasts in weather conditions. In April, temperatures range from a chilly -2°C (29°F) to a pleasant max of 26°C (80°F), with an average of 10°C (50°F). The month experiences 109 mm (4.3 in) of precipitation over about 12 days, accompanied by a relative humidity of 75%. In contrast, January is much colder, with temperatures dipping from -10°C (14°F) to a maximum of 11°C (52°F), and an average of 0°C (33°F). This month sees less precipitation at 65 mm (2.6 in) over 13 days, but with slightly higher humidity at 80%. For those interested in more details, you can check Sendai weather in January. Overall, while January is characterized by cold and damp conditions, April brings a welcome warmth and increased rainfall, signaling the arrival of spring.

April weather is considerably milder than that of February, featuring a broader temperature range with minimums of -2°C (29°F) and maximums reaching 26°C (80°F), compared to February’s chillier minimum of -10°C (14°F) and a maximum of 15°C (59°F). Additionally, April experiences more rainfall, with 109 mm (4.3 in) over 12 days, compared to February's 53 mm (2.1 in) during the same number of days. Despite having slightly lower humidity at 75%, April marks the transition to a more pleasant spring climate, while February remains firmly in the grip of winter. For more details on February conditions, you can visit Sendai weather in February.

In comparing the weather of April and March, we see notable differences in temperature and conditions. April experiences a broader temperature range, with a minimum of -2°C (29°F), an average of 10°C (50°F), and a maximum of 26°C (80°F), while March has slightly cooler temperatures, ranging from a minimum of -3°C (26°F) and an average of 5°C (42°F) to a maximum of 20°C (69°F). Precipitation levels are comparable, with April receiving 109 mm (4.3 in) across 12 days and March slightly wetter at 112 mm (4.4 in) over 13 days. Humidity is also slightly lower in April at 75% compared to 77% in March. For a more detailed look at the weather in March, you can visit Sendai weather in March.

April and May exhibit distinct changes in weather patterns. In April, temperatures range from a chilly minimum of -2°C (29°F) to a pleasant maximum of 26°C (80°F), with an average of 10°C (50°F). The month sees significant precipitation, totaling 109 mm (4.3 in) over 12 rainy days and a relative humidity of 75%. In contrast, May experiences milder conditions, with a minimum of 4°C (40°F), an average of 16°C (61°F), and a high of 30°C (87°F). Although the precipitation is slightly lower at 107 mm (4.2 in), it occurs over 13 days, and the humidity rises to 80%. The transition from April to May showcases a notable warming trend, reflecting the arrival of spring. For more details, you can check Sendai weather in May.

April and June exhibit distinct weather patterns, making each month unique in its own right. In April, temperatures range from a chilly minimum of -2°C (29°F) to a comfortable average of 10°C (50°F), reaching a maximum of 26°C (80°F). The month also sees significant precipitation, totaling 109 mm (4.3 in) over about 12 days, coupled with a humidity level of 75%.

In contrast, June experiences milder temperatures, with a minimum of 10°C (49°F) and an average of 19°C (67°F), peaking at a warm 32°C (89°F). Although it receives slightly less precipitation at 101 mm (4.0 in) over 13 days, the humidity rises to 87%, contributing to a more humid atmosphere. For those interested in specific details about June weather in Sendai, you can find more information here: Sendai weather in June.

In April, temperatures range from a chilly minimum of -2°C (29°F) to a pleasant average of 10°C (50°F), peaking at 26°C (80°F). The month sees considerable rainfall, with 109 mm (4.3 in) over 12 days, and a humidity level of 75%. In contrast, July brings significantly warmer conditions, with temperatures starting at a minimum of 15°C (60°F), averaging 23°C (74°F), and soaring to a maximum of 35°C (95°F). The precipitation also increases in July, totaling 232 mm (9.1 in) across 18 days, and humidity rises to 92%. For a detailed look at July's weather specifics, please refer to Sendai weather in July.

April and August present stark contrasts in weather patterns. In April, temperatures range from a chilly minimum of -2°C (29°F) to a pleasant average of 10°C (50°F), peaking at a maximum of 26°C (80°F). The month sees about 109 mm (4.3 in) of precipitation over 12 days, coupled with a humidity level of 75%. In contrast, August boasts much warmer temperatures, with a minimum of 14°C (58°F), an average of 25°C (77°F), and a maximum of 35°C (95°F). However, it also experiences significantly more rainfall, totaling 214 mm (8.4 in) over 20 days, along with higher humidity levels of 92%. For more details about the weather during this hotter month, visit Sendai weather in August.

April and September showcase distinct variations in weather patterns. In April, temperatures range from a chilly -2°C (29°F) at night to a pleasant 26°C (80°F) during the day, with an average of 10°C (50°F). This month experiences considerable precipitation of 109 mm (4.3 in) over approximately 12 days, coupled with a humidity level of 75%.

Conversely, September sees warmer temperatures, with nighttime lows of 8°C (47°F) and daytime highs reaching up to 33°C (92°F), resulting in a comfortable average of 21°C (69°F). This month also brings increased precipitation at 150 mm (5.9 in) over 14 days, alongside a higher humidity level of 86%.

For more detailed information about September weather, you can check Sendai weather in September.

April and October present contrasting yet fascinating weather patterns. In April, temperatures range from a brisk minimum of -2°C (29°F) to a pleasant maximum of 26°C (80°F), with an average of 10°C (50°F). The month experiences about 109 mm (4.3 in) of precipitation over 12 days, and humidity levels hover at 75%. In contrast, October sees slightly warmer temperatures, with a minimum of 4°C (39°F), an average of 15°C (59°F), and a maximum reaching 27°C (81°F). However, it is also wetter, receiving 208 mm (8.2 in) of precipitation, maintaining the same 12 rainy days, but with increased humidity at 82%. For a deeper look into October's climate, you can check Sendai weather in October.

April and November exhibit notable differences in weather patterns. April typically sees milder temperatures, with an average of 10°C (50°F) and highs reaching up to 26°C (80°F), while November averages slightly cooler at 9°C (48°F), peaking at 21°C (69°F). April is also characterized by higher precipitation, with 109 mm (4.3 in) falling over 12 days compared to November's 40 mm (1.6 in) over 9 days. Humidity levels are relatively similar, with April at 75% and November slightly higher at 79%. For a closer look at November's weather specifics, you can refer to Sendai weather in November.

April and December weather exhibit distinct differences, reflecting the transitions of spring and winter. In April, temperatures range from a chilly minimum of -2°C (29°F) to a pleasant maximum of 26°C (80°F), with an average of 10°C (50°F). This month also experiences considerable precipitation, totaling 109 mm (4.3 in) over about 12 days, coupled with a humidity level of 75%. In contrast, December brings colder temperatures, with a minimum of -5°C (23°F) and a maximum of 16°C (61°F), averaging only 3°C (37°F). It experiences less precipitation at 67 mm (2.6 in) across 16 days, and slightly higher humidity at 80%. Overall, April is notably warmer and wetter than December, highlighting the seasonal shift. For more information, you can check Sendai weather in December.

Compare Sendai's Climate with Cities Worldwide

Conclusion: What to Expect From April Weather in Sendai

As April unfolds in Sendai, the transition from winter to spring becomes evident, bringing a delightful shift in temperatures that rise to a pleasant 26°C (80°F) at their peak, creating an invigorating atmosphere. While the days are warmer, the nights can still dip to a chilly -2°C (29°F), making layering essential for outdoor activities. This month also sees an increase in humidity, averaging around 75%, paired with a total rainfall of 109 mm (4.3 in) over approximately 12 days. Compared to the colder, drier winter months, April offers a refreshing blend of warmth and moisture, inviting nature to awaken and bloom, making it a fascinating time to explore the beauty of Sendai. For more insights into Sendai’s weather trends, visit Sendai Climate.