April Weather in Hayama, Japan

Last updated: August 21, 2025

In Hayama, Japan, April brings a delightful mix of mild temperatures and refreshing rain. The month showcases a maximum temperature of 21°C (70°F), while the average hovers around a comfortable 14°C (58°F), dipping to a pleasant minimum of 6°C (43°F) at night. With 141 mm (5.5 in) of rain spread over 12 days, this spring month exhibits a humidity level of 74%, creating a vibrant atmosphere perfect for enjoying the blooming nature. Visitors can immerse themselves in the charming scenery as everything comes to life with the perfect blend of sun and showers.

April Temperature in Hayama

In April, Hayama, Japan, begins to shed the chill of winter, revealing a more temperate climate that beckons the beauty of spring. With a minimum temperature of 6°C (43°F) and an average of 14°C (58°F), the days gradually warm, peaking at a refreshing 21°C (70°F). This month marks a distinct rise from March's cool embrace, as daytime warmth encourages blossoming flowers and vibrant scenery. As residents and visitors alike welcome the milder weather, April serves as a delightful transition into the more sultry months ahead, setting the stage for May's even warmer embrace.

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

The chart illustrates April temperature patterns in Hayama, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hayama, 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).
JanFebMarAprMayJunJulAugSepOctNovDec464752576570768075676051
Data source: Temperature data for Hayama 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 Hayama

In April, Hayama experiences a notable downpour, with precipitation amounting to 141 mm (5.5 in) over 12 days of rain. This marked a decrease from March's heavy downpour of 172 mm, yet remains significant as it falls within one of the wetter months of the year. The consistent rainfall pattern continues into May and June, which see even higher totals. While April's precipitation is substantial, it signals the gradual transition from the heavy rains of spring to the early summer downpours that characterize Hayama's climate. As temperatures rise and nature thrives, April's showers serve as a vital bridge in nurturing the vibrant landscapes that follow.

April Precipitation Trends in Hayama

The chart displays monthly precipitation patterns in Hayama, 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 Hayama, April typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec646217214114819722612920830311182
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

April Humidity in Hayama

In April, Hayama experiences a modest humidity level of 74%, a slight increase from March's 70%. This marks a transition as spring takes hold, with humidity beginning to rise in anticipation of the impending summer months. As the year progresses, humidity levels soar, peaking in the heat of July at a notable 93%, before gradually subsiding through autumn. April’s humidity serves as a reminder of the region's shifting climate, where each month brings its own character, laying the groundwork for warmer and more humid conditions ahead.

April Average Humidity in Hayama

This chart illustrates the average monthly humidity levels in Hayama, 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 Hayama is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%74%70%74%82%88%93%90%86%83%80%78%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in Hayama

In April, Hayama, Japan, experiences a notable rise in UV radiation, with a UV Index of 10, categorizing it as very high. This increase marks a trend from the previous months, reflecting the approach of the warmer season. Sun exposure becomes more critical during this time, as the burn time is reduced to just 15 minutes, urging residents and visitors alike to take precautionary measures against harmful rays. As the month transitions towards May, the UV Index escalates even further to an extreme level of 11, emphasizing the importance of sun safety. It's essential to stay informed, especially as the seasons change; for more details, check out the Hayama UV Index.

Maximum UV Index Levels in Hayama for April

The chart shows the monthly maximum UV Index (UVI) for Hayama 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 Hayama typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec458101111111110754
Data source: Hayama 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 Hayama

In April, Hayama, Japan, basks in a radiant glow, accumulating 269 hours of sunshine, marking a delightful increase from the previous months. As winter fades, the days grow longer and brighter, with March's 255 hours paving the way for this sunny ascent. This trend continues into May, where sunshine peaks at 286 hours, hinting at the vibrant summer ahead. The gradual progression of sunlight hours not only highlights the shift in seasons but also invites residents and visitors alike to embrace the outdoors, making April a pivotal month in Hayama's sun-kissed calendar.

Monthly Sunshine Duration in Hayama: April Highlighted

The April sunshine duration represents the total number of hours Hayama 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.
JanFebMarAprMayJunJulAugSepOctNovDec187h224h255h269h286h262h249h297h239h205h226h226h
Data source: Hayama April Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Hayama During April

In Hayama, Japan, April sees a 49% chance of sunny weather, making it a transitional month as spring unfolds. While this likelihood represents a slight dip from March's 41%, it still maintains a better outlook than the rainy months that follow in May and June, both hovering around 25%. Notably, the sunniest start to the year occurs in February with 64%, while the possibility of sunny days fluctuates throughout the year, reaching a peak in December with 67%. Thus, despite April's moderate forecast, it's an opportunity for residents and visitors alike to enjoy the budding beauty of spring before the clouds of summer settle in.

Percentage of Sunny Days in April in Hayama

The chart illustrates the percentage of sunny days in Hayama 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 Hayama experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec53%64%41%49%24%25%35%38%29%48%62%67%
Data source: Hayama April chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Hayama in April

As spring unfolds in Hayama, Japan, April heralds a delightful increase in daylight duration, with the sun gracing the sky for 13 hours—a significant leap from the 11 hours seen in March. This shift signifies the arrival of longer, brighter days, which continue to stretch into May with 14 hours of daylight. The gradual ascent in sunshine not only brightens the landscape but also uplifts spirits, inviting residents and visitors alike to embrace outdoor adventures. As the year progresses into summer, the daylight intensity stabilizes at 14 hours through June and July, before gently descending back to 13 hours in August. This rhythmic transition reflects nature's predictable dance, bringing warmth and vitality to the charming coastal town of Hayama.

Average Daylight Hours in Hayama for April

The chart illustrates the variation in daylight duration in Hayama throughout the year, with April highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 3m10h 53m11h 58m13h 4m14h 1m14h 29m14h 15m13h 26m12h 22m11h 16m10h 18m9h 48m
Data source: Hayama daylight hours, calculated by summing the hours between sunrise and sunset for each day.

April Winds in Hayama

As April ushers in the beauty of spring in Hayama, Japan, the gentle caress of the April winds, with an average speed of 5.2 m/s (12 mph), creates a refreshing atmosphere that invites residents and visitors alike to enjoy the outdoors. Following a slight dip in wind speed from March's 5.4 m/s, this month maintains a light, invigorating breeze that complements the blooming cherry blossoms. Interestingly, the trend shows a gradual decrease in wind speed as summer approaches, with May reflecting a very similar 5.3 m/s average, hinting at the calm, warm days ahead. Overall, April's winds add a delightful touch to Hayama's serene beauty, encouraging both adventure and relaxation.

Average April Wind Speed in Hayama

The chart displays monthly wind speed patterns in Hayama, 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.
JanFebMarAprMayJunJulAugSepOctNovDec5.35.85.45.2 m/s5.33.73.35.05.25.45.35.4
Data source: Hayama April wind data, generated using information from the Copernicus Climate Change Service.

How April Weather in Hayama Compares to Other Months

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

April presents a marked shift in weather compared to January, characterized by milder temperatures and increased humidity. In April, the average temperature rises to 14°C (58°F), with a maximum of 21°C (70°F), while January sees a much cooler average of 8°C (47°F) and a maximum of only 18°C (64°F). Additionally, April experiences significantly more precipitation, totaling 141 mm (5.5 in) over 12 days compared to January's 64 mm (2.5 in) over just 6 days. Humidity remains relatively high in both months, with April at 74% and January at 76%. For more details, visit Hayama weather in January.

When comparing the weather in April and February, it's clear that April generally offers milder and warmer conditions. April’s average temperature reaches 14°C (58°F), with highs of 21°C (70°F), while February has a lower average of 8°C (47°F), peaking at 17°C (63°F). Precipitation is significantly higher in April, with 141 mm (5.5 in) over about 12 days compared to February's 62 mm (2.4 in) across 8 days. Both months share the same humidity level of 74%, indicating a consistently damp atmosphere. For more details on February's climate, you can visit Hayama weather in February.

April generally experiences milder temperatures compared to March, with average highs reaching 21°C (70°F) in April, compared to March's 19°C (66°F). The minimum temperature in April is slightly higher at 6°C (43°F) versus March’s 3°C (38°F). Although April sees less precipitation overall, totaling 141 mm (5.5 in) compared to March's 172 mm (6.8 in), both months experience rainfall on approximately 12 days. Humidity remains relatively stable, with April at 74% and March at 70%. For a more detailed overview of March weather, you can check Hayama weather in March.

April weather is generally cooler, with average temperatures ranging from a minimum of 6°C (43°F) to a maximum of 21°C (70°F). The month also experiences considerable rainfall, with a total of 141 mm (5.5 in) spread across 12 days and humidity levels at 74%. In contrast, May sees a rise in temperatures, with minimums of 12°C (54°F) and maximums reaching up to 23°C (74°F), resulting in a warmer average of 18°C (65°F). While May has slightly higher precipitation at 148 mm (5.8 in) over 11 days, humidity levels increase to 81%, making it feel a bit more muggy. For more detailed information, check out Hayama weather in May.

April and June present contrasting weather patterns, marked by their distinct temperatures and humidity levels. In April, temperatures range from a cool minimum of 6°C (43°F) to a comfortable average of 14°C (58°F), peaking at a maximum of 21°C (70°F). The month experiences about 141 mm (5.5 in) of precipitation over 12 days, with a humidity level of 74%.

In stark contrast, June brings warmer conditions, with temperatures starting at a minimum of 16°C (62°F) and averaging 21°C (70°F), reaching a maximum of 26°C (79°F). However, this month also sees an increase in rainfall, totaling 197 mm (7.8 in) over 13 days and a higher humidity of 88%. For more details about the weather during this month, you can visit Hayama weather in June.

When comparing the weather in April and July, it's clear that they exhibit distinct characteristics. In April, temperatures range from a minimum of 6°C (43°F) to a maximum of 21°C (70°F), with an average of 14°C (58°F). The month is marked by relatively high precipitation, totaling 141 mm (5.5 in) over about 12 rainy days, and the humidity sits at a comfortable 74%.

In contrast, July experiences much warmer temperatures, with a minimum of 19°C (66°F) and a maximum of 28°C (83°F), averaging around 25°C (77°F). Rainfall is more abundant during this month, totaling 226 mm (8.9 in) across approximately 17 days, and the humidity increases significantly to 93%. This comparison underscores the transition from the mild and wetter conditions of April to the hot and humid climate typical of July. For more detailed insights, you can check Hayama weather in July.

April and August present quite different weather experiences. In April, temperatures typically range from a cool 6°C (43°F) at night to a pleasant average of 14°C (58°F), peaking at around 21°C (70°F) during the day. The month sees a fair amount of rainfall, with 141 mm (5.5 in) spread over 12 days, and humidity levels hovering at 74%. In contrast, August is much warmer, with minimum temperatures starting at 21°C (70°F) and averaging around 27°C (80°F), reaching highs of 31°C (87°F). Although August has slightly less precipitation at 129 mm (5.1 in), the humidity rises to a significant 90%, contributing to a muggy feel. For a detailed perspective, you can also check Hayama weather in August.

April and September present markedly different weather patterns. In April, temperatures range from a cool 6°C (43°F) at night to a comfortable 21°C (70°F) during the day, with an average of 14°C (58°F). However, this month also sees significant rainfall, with 141 mm (5.5 in) of precipitation over 12 days and a humidity level of 74%. In contrast, September experiences warmer temperatures, with lows of 18°C (65°F) and highs reaching up to 29°C (84°F), resulting in an average of 24°C (75°F). Nonetheless, September tends to be wetter, receiving 208 mm (8.2 in) of rainfall across 17 days and a higher humidity level of 86%. For those considering a visit, detailed information can be found at Hayama weather in September.

April and October present quite different weather patterns. In April, temperatures range from a minimum of 6°C (43°F) to a maximum of 21°C (70°F), with an average of 14°C (58°F). Precipitation is somewhat moderate at 141 mm (5.5 in) and occurs over 12 days, accompanied by a humidity level of 74%. In contrast, October enjoys warmer temperatures, with a minimum of 13°C (56°F) and a maximum of 26°C (79°F), averaging 20°C (68°F). However, it also sees increased rainfall, totaling 303 mm (11.9 in) over 17 days, and higher humidity at 83%. For more insights into October weather, you can check Hayama weather in October.

April and November share similar temperature ranges, with both months experiencing minimums around 6°C (43°F) and maximums close to 21°C (70°F). However, April typically sees slightly cooler average temperatures at 14°C (58°F) compared to November's average of 15°C (60°F). In terms of precipitation, April is wetter, with 141 mm (5.5 in) spread over 12 days, while November receives a total of 111 mm (4.4 in) during the same number of days. Humidity levels are also higher in November, reaching 80%, compared to 74% in April, making the latter month feel a bit drier. For more details, you can check Hayama weather in November.

April and December showcase a notable contrast in weather patterns. In April, temperatures range from a minimum of 6°C (43°F) to a maximum of 21°C (70°F), with an average of 14°C (58°F), while December sees slightly cooler temperatures, peaking at 21°C (69°F) and averaging 11°C (52°F). Precipitation is more prevalent in April, with 141 mm (5.5 in) falling over approximately 12 days, compared to December's 82 mm (3.2 in) over 11 days. Humidity levels are also slightly higher in December at 78%, against 74% in April. For a detailed look at the December weather, visit Hayama weather in December.

Compare Hayama's Climate with Cities Worldwide

Conclusion: What to Expect From April Weather in Hayama

April in Hayama marks a distinct shift in weather as the region transitions from the cooler months to a more temperate climate. With average temperatures rising, the days become pleasantly mild, inviting outdoor activities amidst the blooming scenery. However, April also brings its share of rain, making it one of the wetter months of the year with frequent precipitation, enveloping the landscape in lush greenery. The humidity lingers, creating a refreshing atmosphere that contrasts sharply with the dry winter air. For those planning to visit, it's a splendid month that showcases the beauty of Hayama in full bloom while also reminding us to be prepared for those spring showers. For more insights on Hayama's climate, visit Hayama Climate.