Last updated: August 21, 2025
April in Kusatsu, Japan, showcases a remarkable transition into spring, marked by a maximum temperature reaching 27°C (81°F) and an average of 9°C (48°F). However, the month also brings cooler nights with minimum temperatures dropping to -5°C (24°F). Rainfall is prevalent, with 112 mm (4.4 in) of precipitation spread across 15 days, leading to a humidity level of 78%, creating a vibrant tapestry of blooming flora. This dynamic weather pattern offers a unique blend of warmth and refreshment, perfect for exploring the picturesque landscapes of Kusatsu.
In April, Kusatsu, Japan, experiences a delightful transition into spring, where temperatures begin to rise after the chill of winter. The minimum temperature hovers around -5°C (24°F), while the average climbs to a comfortable 9°C (48°F), and the days can warm up to a pleasant 27°C (81°F). This month marks a significant shift from the lingering cold of March, which averages around 4°C (39°F), showcasing an upward trend as residents welcome the budding flowers and greenery. As nature awakens, the vibrant atmosphere in Kusatsu is complemented by the inviting warmth, making April an appealing time for visitors and locals alike to enjoy the beauty of the season.
In April, Kusatsu experiences a noteworthy transition in its weather patterns, mirroring the arrival of spring. With precipitation measuring 112 mm (4.4 in), it closely follows March's rainfall, which suggests a consistent pattern of moisture leading into the warmer months. The 15 days of rain during this period signifies a slight increase in precipitation days compared to March, highlighting the lingering effects of winter's retreat. As the town begins to bloom into spring, this steady rainfall not only nourishes the landscapes but also sets the stage for the upcoming surge in May's soaking totals. Overall, April's weather reflects a delicate balance, maintaining the rhythm of Kusatsu's seasonal shifts.
April in Kusatsu, Japan, marks a subtle transition in humidity, dipping to 78%. This decrease follows a gradual decline from 81% in March, indicating the start of spring with drier air that begins to clear the winter chill. As the seasons progress, humidity levels rise again in May before sharply climbing to 92% in the summer months of July and August. This cyclical pattern highlights the comforting freshness of early spring, setting the stage for the lush, humid summers that Kusatsu is known for. Enjoying April's mild climate, residents and visitors alike can revel in the beauty of nature awakening, coupled with a welcome lightness in the air.
April in Kusatsu, Japan, sees a significant increase in UV exposure, with the UV Index reaching 9, categorized as very high. This marks a continuation of the upward trend from the previous months, where March also recorded a high index of 8. As a result, residents and visitors alike should be cautious, as the burn time diminishes to just 15 minutes. This trend suggests that spring is a time to be vigilant about sun safety, as the intensity of UV rays escalates quickly. As you plan outdoor activities, stay informed and prepared by checking the Kusatsu UV Index to keep your skin protected.
UV Risk Categories
As April washes over Kusatsu, Japan, the sunshine begins to embrace the landscape with increasing vigor, bringing 279 hours of bright light to the region. This uptick in sunlight marks a continued growth from the previous months, reflecting the awakening of spring after the winter chill. Notably, April's hours of sunshine not only surpass those of January, February, and March but also hint at the approaching warmth of May, which boasts an even brighter 287 hours. This gentle rise from late winter to early spring highlights a captivating trend, as the days become longer and sunnier, inviting residents and visitors alike to revel in the beauty of blooming nature and the vibrant life it brings.
In Kusatsu, Japan, April brings a moderate 42% chance of sunny weather, slightly improving upon the variability seen in earlier months like January and March, both at 33%. This upward trend is a refreshing shift following the winter months, with February offering a notable 45% chance of sunshine. However, as spring progresses into May and June, the likelihood dips to 24% and 20%, respectively. Overall, April stands out as a pivotal moment in the transition toward sunnier seasons, making it a delightful time for outdoor activities and exploring the natural beauty of Kusatsu.
As April unfolds in Kusatsu, Japan, the landscape basks in an invigorating 13 hours of daylight, marking a delightful transition from the earlier months. A steady increase in daylight from just 9 hours in January to 11 hours in March underscores the arrival of spring. This month not only bridges the gap towards the longer days of summer but also heralds a time for renewal and outdoor activities. Following the upward trend, May and June continue to offer the same luxurious 14 hours of daylight, inviting residents and visitors alike to savor the rich beauty of this alpine town. As we delve deeper into this season of awakening, April stands out as a vital connector between the fading winter and the vibrant summers ahead.
In April, Kusatsu, Japan experiences a gentle breath of wind with an average speed of 2.4 m/s (5 mph), sustaining the relatively mild breezes characteristic of early spring. As the season transitions from the chill of winter, the wind speed reflects a slight uptick compared to March, which recorded 2.2 m/s (5 mph). Encapsulated by fluctuating patterns throughout the year, the winds begin to ease down in May at 2.0 m/s (4 mph), hinting at the impending summer calm. The overall trend shows that while January through April maintains a steadier pace between 2.1 to 2.5 m/s, the latter half of the year sees a gradual decrease, culminating with the softest whispers of wind in July and August, both at 1.3 m/s (3 mph). Thus, April serves as a pivotal month, bridging the briskness of spring and the more tranquil summer breeze that follows.
Weather in Kusatsu varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Kusatsu, focusing on differences in temperature, rainfall, humidity, and UV levels.
April weather in Kusatsu offers a more moderate temperature range compared to January, with minimums around -5°C (24°F) and maximums reaching up to 27°C (81°F). In contrast, January experiences colder conditions, with minimum temperatures dropping to -12°C (11°F) and a maximum of only 9°C (49°F). While April sees higher average temperatures at 9°C (48°F), January's average is a chilly -2°C (29°F). Additionally, April tends to be wetter, with 112 mm (4.4 in) of precipitation over about 15 days, compared to January's 74 mm (2.9 in) over 16 days. The humidity is also slightly lower in April at 78%, compared to January's 88%. For more details, you can check Kusatsu weather in January.
When comparing the weather in April and February, a notable shift in temperature and humidity is evident. April sees milder temperatures, with a minimum of -5°C and an average of 9°C, peaking at 27°C, while February is colder, with temperatures ranging from a minimum of -11°C to an average of -1°C, and a maximum of 17°C. Additionally, April experiences higher precipitation at 112 mm over 15 days, compared to February's 74 mm across 14 days. Interestingly, February's humidity is slightly higher at 86%, whereas April's humidity sits at 78%. For a more detailed look at February weather, check out Kusatsu weather in February.
April generally exhibits milder temperatures compared to March, with a notable increase in the average temperature from 4°C (39°F) in March to 9°C (48°F) in April. While both months receive a similar amount of precipitation (112 mm in April versus 111 mm in March), April tends to be slightly wetter with rainfall occurring over 15 days, compared to 14 days in March. Additionally, humidity levels are quite comparable, remaining at around 78% in April and 81% in March. For a detailed look at the weather patterns in March, you can explore Kusatsu weather in March.
In April, temperatures in Kusatsu typically range from a minimum of -5°C (24°F) to a maximum of 27°C (81°F), with an average temperature of 9°C (48°F). The month sees about 112 mm (4.4 in) of precipitation over approximately 15 days, and humidity levels average around 78%. In contrast, May brings milder conditions, with temperatures ranging from a minimum of 0°C (32°F) to a maximum of 30°C (87°F), leading to a more pleasant average temperature of 15°C (59°F). Precipitation increases to 139 mm (5.5 in) over 16 days, while humidity slightly rises to 81%. For more detailed information, check out Kusatsu weather in May.
April and June exhibit distinct weather patterns, reflecting the transition from early spring to early summer. In April, temperatures range from a chilly minimum of -5°C (24°F) to a pleasant maximum of 27°C (81°F), with an average of 9°C (48°F). The month sees considerable precipitation, totaling 112 mm (4.4 in) over 15 days, along with a humidity level of 78%.
In contrast, June brings warmer temperatures, with a minimum of 6°C (43°F) and an average of 18°C (65°F), peaking at 30°C (87°F). The increased warmth is accompanied by even more rainfall, with 168 mm (6.6 in) recorded over 18 days, resulting in a higher humidity level at 88%. These climatic shifts highlight the overall warming and increased moisture typical of June compared to April. For more details, you can explore Kusatsu weather in June.
April and July present strikingly different weather patterns, reflecting the transition from spring to summer. In April, temperatures vary widely, ranging from a chilly -5°C (24°F) to a pleasant 27°C (81°F), with an average of 9°C (48°F). The month experiences significant precipitation, totaling 112 mm (4.4 in) over 15 rainy days and a humidity level of 78%. In contrast, July is much warmer, with minimum temperatures starting at 14°C (58°F) and peaking at 33°C (91°F), averaging around 22°C (72°F). This summer month sees increased precipitation to 278 mm (10.9 in) over 25 days and higher humidity at 92%. For a more detailed comparison of temperatures and conditions, you can visit Kusatsu weather in July.
April and August present strikingly different weather conditions. In April, temperatures range from a chilly minimum of -5°C (24°F) to a pleasant maximum of 27°C (81°F), with an average of 9°C (48°F). The month sees a fair amount of precipitation, totaling 112 mm (4.4 in) over 15 days, accompanied by a humidity level of 78%. In contrast, August enjoys milder temperatures, with a minimum of 11°C (52°F) and highs reaching 34°C (93°F), resulting in an average of 23°C (74°F). Precipitation is also higher in August at 177 mm (7.0 in) but occurs over more days, totaling 22, and the humidity increases to 92%. For a deeper look into what August holds, check out Kusatsu weather in August.
April and September showcase distinct weather patterns, reflecting the transition from spring to autumn. In April, temperatures range from a chilly -5°C (24°F) at night to a pleasant 27°C (81°F) during the day, with an average of 9°C (48°F). The month sees significant precipitation, totaling 112 mm (4.4 in) over about 15 days, and humidity is relatively high at 78%.
In contrast, September features warmer temperatures, with nighttime lows of 7°C (44°F) and daytime highs reaching 29°C (85°F), resulting in a comfortable average of 19°C (66°F). However, it also experiences more rainfall, totaling 168 mm (6.6 in) spread over 19 days, and a slight increase in humidity to 89%. For more details on September weather specifics, you can refer to Kusatsu weather in September.
April and October present distinct weather patterns that cater to different experiences. In April, temperatures fluctuate from a chilly minimum of -5°C (24°F) to a pleasant average of 9°C (48°F), with highs reaching up to 27°C (81°F). It's a relatively wetter month, receiving about 112 mm (4.4 in) of precipitation over 15 days, coupled with a humidity level of 78%. In contrast, October offers a more moderate climate with temperatures ranging from a minimum of 1°C (34°F) to an average of 13°C (55°F) and a maximum of 26°C (80°F). This month sees a significantly higher precipitation of 217 mm (8.5 in) over 17 days and increased humidity at 87%. For a more detailed overview of weather conditions, you can visit Kusatsu weather in October.
April and November present contrasting weather patterns, each with its unique characteristics. In April, temperatures range from a chilly -5°C (24°F) at night to a pleasant maximum of 27°C (81°F) during the day, averaging around 9°C (48°F). This month also sees higher precipitation, with 112 mm (4.4 in) falling over 15 days, contributing to a relative humidity of 78%.
In contrast, November's weather is slightly cooler, with temperatures dipping to a minimum of -4°C (24°F) and reaching a maximum of 20°C (68°F), averaging about 7°C (44°F). Precipitation is notably lower at 50 mm (2.0 in) over 10 days, though the humidity is higher at 85%. For more details on the climate during this time, check Kusatsu weather in November.
April and December present contrasting weather in terms of temperature and precipitation. In April, temperatures can range from a chilly -5°C (24°F) at night to a pleasant 27°C (81°F) during the day, with an average of 9°C (48°F). The month sees a total precipitation of 112 mm (4.4 in) over about 15 days, with humidity at a comfortable 78%. In contrast, December's temperatures drop significantly, with a minimum of -8°C (17°F) and a maximum of 18°C (65°F), averaging just 1°C (35°F). Although it experiences less rainfall at 76 mm (3.0 in), it also has 15 days of precipitation, and the humidity rises to 86%. For more specific insights about December weather in Kusatsu, you can refer to Kusatsu weather in December.
As April unfolds in Kusatsu, the weather begins to transition from the chilly grasp of winter to the mild embrace of spring. This month showcases a pleasant balance, with warm maximum temperatures peaking at 27°C, while average and even minimum figures remain distinctively lower compared to the summer months. However, the increased precipitation, with about 15 rainy days, contributes to a lush and vibrant landscape, setting it apart from the drier months that characterize mid-year. The elevated humidity adds a refreshing feel to the air, making April an invigorating time to experience the natural beauty of this region. For a detailed look at how these conditions compare to other times of the year, explore the Kusatsu Climate.