Last updated: February 24, 2025
April in Hilo, United States, is characterized by a mild and humid climate, with average temperatures hovering around 22°C (71°F). Daily highs can reach up to 26°C (80°F), while evenings cool down to a comfortable 18°C (65°F). The month is notably wet, with precipitation accumulating to 195 mm (7.7 in) over the course of approximately 25 rainy days, contributing to the lush landscapes for which the region is famous. With humidity levels around 80%, visitors can expect a tropical atmosphere, perfect for embracing the vibrant beauty of Hilo.
In April, Hilo enjoys a delightful transition into spring, with temperatures reflecting a subtle upward trend. The minimum temperature hovers around 18°C (65°F), while the average rises to a comfortable 22°C (71°F). This month sees the high mark reaching 26°C (80°F), maintaining the pleasant warmth characteristic of Hilo. As we move from the cooler months, April embodies a balance of warmth and freshness, setting the stage for the warmer conditions ahead. The consistent temperatures create an inviting atmosphere for both residents and visitors to enjoy the vibrant scenery and outdoor activities that this coastal gem has to offer.
In April, Hilo experiences a notable decrease in precipitation, with an average of 195 mm (7.7 in) of rain, marking a drop from March's 225 mm (8.8 in). This month sees rain on about 25 days, contributing to the region's reputation for abundant rainfall. Compared to the early months of the year, rainfall in April is moderate, but remains higher than the drier summer months ahead. Interestingly, April's precipitation prepares the island for the gradual transition to drier weather, as it follows a trend of decreasing rainfall amounts from the heavier late-winter and early-spring months, ensuring Hilo maintains its lush beauty even as the season shifts.
In April, Hilo, United States, experiences a notable increase in humidity, reaching 80%, which is a slight rise from 77% in March. This trend marks the beginning of the wet season, as humidity levels steadily climb with the approach of summer. Following April, the humidity stays consistent at 80% in May, and then it escalates gradually to a peak of 84% in August. Overall, this consistent moisture creates Hilo's lush landscapes and contributes to its reputation as a tropical paradise, reflecting a pattern where humidity remains high throughout the year, particularly in the summer months.
In April, Hilo experiences a noteworthy rise in UV intensity, with the UV Index peaking at 13, placing it firmly within the extreme exposure category. This marks an escalating trend that began in January, moving from a UV Index of 8 to a striking 13 by April. With a burn time of just 10 minutes, it's crucial for residents and visitors alike to be vigilant about sun protection. As we transition from March into April, this upward trajectory demonstrates the increasing need for sunscreen and protective clothing to avoid harmful effects. For more detailed information on UV exposure in Hilo throughout the year, visit Hilo UV Index.
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As April blossoms in Hilo, residents and visitors revel in a delightful surge of 284 hours of sunshine, marking a noteworthy increase from the previous months. Following the gradual upward trend initiated in January, where the sun graced the skies for 212 hours, each month has steadily brightened—culminating in the sunniest start of spring yet. This promising trajectory continues into May with an impressive 318 hours, promising even more opportunities to bask in the warm Hawaiian climate. The sunny days not only enhance outdoor activities but also set the stage for vibrant local festivals, making Hilo a haven for sun-seekers and nature enthusiasts alike. As the sun lingers longer in the sky, April serves as a joyful prelude to the even sunnier days ahead.
In Hilo, the likelihood of sunny weather in April stands at 42%, slightly above the average for the first quarter of the year. This figure is interesting when viewed in the context of the surrounding months; while March dips to 36%, April shows a mild recovery, aligning closely with January and May, both at 41%. Notably, the lowest chance of sunny days occurs in December at 27%, highlighting a trend where the chances for sunshine generally improve as the year transitions into spring. As summer approaches, July sees the steepest decline to just 31%, making April an appealing choice for those looking to bask in the sun before the wetter months settle in.
As April emerges in Hilo, the daylight duration remains steady at 12 hours, mirroring the gradual transition seen since March. This stability marks a continuation of the longer days that began to unfold in January and February with a consistent 11 hours of sunlight. As the weeks progress toward May, residents can anticipate an increase to 13 hours of daylight, ushering in the vibrant intensity of summer. This pattern of lengthening days not only enhances outdoor activities but also captures the essence of Hawaii's natural beauty, making April a delightful time to experience the island’s lush landscapes. The rhythm of daylight in Hilo clearly reflects the seasonal changes, inviting both locals and visitors to relish in the ample light and warmth that spring brings.
April in Hilo features a gentle, refreshing breeze with an average wind speed of 3.1 m/s (7 mph), making it a delightful time for outdoor activities. This month sees a slight dip from the previous month, March, which recorded a higher average of 3.5 m/s (8 mph). However, the wind remains consistent with the overall trends observed earlier in the year, where speeds fluctuate modestly. In fact, April's winds fit snugly within the average range that characterizes Hilo's climate, showcasing a pattern of mildness from early winter through spring. As the year progresses, Hilo's winds become somewhat calmer during the summer months, reminding us of the island's tranquil yet dynamic atmosphere.
The weather in Hilo changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of April's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Hilo and find detailed weather information for every month.
April and January exhibit similar temperature ranges, with January holding a slight edge in average temperature at 21°C (71°F) compared to April's 22°C (71°F). Both months experience mild minimum temperatures of around 18°C (65°F), while their maximums are close, with April reaching 26°C (80°F) and January peaking at 25°C (77°F). However, April sees more precipitation, accumulating 195 mm (7.7 in) over 25 days, in contrast to January's 158 mm (6.2 in) over 20 days. The humidity levels remain relatively constant, with April at 80% and January at 79%. For a more detailed look at January weather, you can refer to this link: Hilo weather in January.
When comparing the weather in April and February, both months exhibit similar temperature ranges, with April having slight increases in minimum and average temperatures. April's temperatures range from a minimum of 18°C (65°F) to a maximum of 26°C (80°F), while February's temperatures range from 17°C (62°F) to the same maximum. However, February experiences significantly higher precipitation, with 262 mm (10.3 in) over 23 days compared to April's 195 mm (7.7 in) over 25 days. The humidity levels are comparably high, with April at 80% and February slightly lower at 79%. This makes April a bit drier while still maintaining warm temperatures. For more details, check out Hilo weather in February.
In comparing the weather of April and March, we observe that both months feature similar temperature ranges, with April slightly warmer, experiencing a minimum of 18°C (65°F) and an average of 22°C (71°F), while March has a minimum of 17°C (64°F) and an average of 21°C (70°F). However, April sees a decrease in total precipitation, measuring 195 mm (7.7 in) over 25 days compared to March's 225 mm (8.8 in) across 26 days. Additionally, April's humidity is marginally higher at 80%, compared to March’s 77%. For a detailed look at March's weather patterns, you can visit Hilo weather in March.
In April, Hilo experiences slightly lower temperatures with a minimum of 18°C (65°F) and an average of 22°C (71°F), while May sees a small increase in the minimum temperature to 19°C (67°F). Both months share similar maximum temperatures, hovering around 26°C (80°F) in April and 26°C (79°F) in May. Precipitation is abundant in both months, with April receiving 195 mm (7.7 in) over 25 days and May experiencing a bit less at 166 mm (6.5 in) over 27 days. Interestingly, the humidity remains constant at 80% for both months. For a detailed look at the weather conditions specific to May, you can check Hilo weather in May.
April and June present a transition in weather patterns, with both months exhibiting mild temperatures but notable differences in precipitation. In April, the average temperature ranges from a minimum of 18°C (65°F) to a maximum of 26°C (80°F), with significant rainfall totaling 195 mm (7.7 in) over 25 days, resulting in high humidity levels around 80%. In contrast, June offers slightly warmer temperatures, with a minimum of 20°C (69°F) and an average of 23°C (74°F), while experiencing less rainfall of 106 mm (4.2 in) also over 25 days. The humidity remains comparable at 82%, but the overall climate feels drier and more stable in June compared to April. For more specific details on the weather during this month, you can check Hilo weather in June.
April and July exhibit distinct weather patterns, reflecting the transition from spring to summer. In April, temperatures range from a minimum of 18°C (65°F) to a maximum of 26°C (80°F), with an average of 22°C (71°F). The month is characterized by significant precipitation, totaling 195 mm (7.7 in) across 25 days, with humidity levels around 80%. In contrast, July sees slightly warmer temperatures, with a minimum of 21°C (70°F) and a maximum reaching 29°C (85°F), averaging at 24°C (75°F). Although the average precipitation decreases to 131 mm (5.1 in) over 28 days, humidity rises slightly to 83%. For more details on July weather, you can visit Hilo weather in July.
April and August both display warm temperatures, but August tends to be slightly warmer overall. While April boasts a minimum temperature of 18°C (65°F) and an average of 22°C (71°F), August features a higher minimum of 21°C (70°F) and an average of 24°C (75°F). In terms of precipitation, both months are quite similar, with April receiving 195 mm (7.7 in) over 25 days and August slightly increasing to 197 mm (7.8 in) over 27 days. Humidity also rises from April’s 80% to August’s 84%, making both months feel quite humid, but August is a bit more oppressive. For more details, check out Hilo weather in August.
April and September present noticeably different weather patterns. In April, temperatures start at a minimum of 18°C (65°F) and peak at 26°C (80°F), with an average of 22°C (71°F). This month is quite wet, boasting a high precipitation total of 195 mm (7.7 in) over 25 days, coupled with a humidity level of 80%. Conversely, September experiences slightly warmer temperatures, ranging from a minimum of 21°C (71°F) to a maximum of 28°C (82°F), with an average of 24°C (76°F). The month sees significantly less rainfall, totaling 108 mm (4.3 in) over 24 days and maintaining a humidity level of 82%. For more detailed information, you can check Hilo weather in September.
In April, the weather is characterized by slightly cooler temperatures, with an average of 22°C (71°F) and maximums reaching 26°C (80°F), while humidity hovers around 80%. The month sees significant rainfall, with approximately 195 mm (7.7 in) spread over 25 days. In contrast, October offers warmer conditions, with temperatures ranging from a minimum of 20°C (69°F) to a maximum of 28°C (82°F) and an average of 24°C (75°F). Precipitation is slightly lower at 189 mm (7.4 in), occurring over 23 days, and humidity increases to 83%. For more detailed insights into October weather, you can check Hilo weather in October.
April and November exhibit relatively similar weather patterns, though there are notable differences. In April, temperatures range from a minimum of 18°C (65°F) to a maximum of 26°C (80°F), with an average of 22°C (71°F). The month is quite wet, with precipitation reaching 195 mm (7.7 in) over 25 days and humidity levels at 80%. Conversely, November sees slightly higher temperatures, with a minimum of 20°C (68°F) and a maximum of 27°C (80°F), averaging 23°C (74°F). Precipitation decreases to 153 mm (6.0 in) across 24 days, accompanied by a higher humidity level of 83%. For a more detailed look at November weather, you can check Hilo weather in November.
April and December in Hilo share remarkably similar temperature averages, with both months experiencing a minimum of 18°C (65°F), an average of 22°C (71°F), and a maximum around 26°C (80°F for April and 78°F for December). However, December typically sees slightly higher precipitation levels, totaling 228 mm (9.0 in) over 24 days, compared to April's 195 mm (7.7 in) across 25 days. Additionally, humidity remains consistent across both months, with December being marginally higher at 81% versus April's 80%. For more details, you can explore Hilo weather in December.
In April, Hilo experiences a blend of mild temperatures and significant rainfall, making it a distinct month in the region's climate. With an average temperature hovering around a comfortable 22°C (71°F), it offers a pleasantly warm atmosphere. However, the city also sees a considerable amount of precipitation, with 195 mm (7.7 in) falling over 25 days, contributing to its lush surroundings and vibrant landscapes. The 80% humidity keeps the air feeling damp, which contrasts sharply with the drier months that precede and follow. This combination of warmth and moisture not only defines April but also sets the stage for Hilo's lush, tropical environment. For more insights into the weather patterns throughout the year, explore Hilo Climate.