Last updated: August 27, 2025
In April, Arenal, Peru experiences a vibrant tropical climate characterized by average temperatures around 25°C (78°F), with daily highs reaching up to 34°C (94°F) and lows dipping to 18°C (65°F). During this month, the region receives a modest 19 mm (0.8 in) of rainfall across just 2 days, providing a refreshing contrast to the high humidity level of 86%. This combination of warmth and moisture creates an ideal environment for lush landscapes and diverse wildlife, making Arenal a captivating destination for nature enthusiasts and adventurers alike.
In April, Arenal, Peru experiences mild temperatures that perfectly encapsulate the tropical climate of the region. The minimum temperature hovers around 18°C (65°F), while the average reaches a comfortable 25°C (78°F), ideal for outdoor exploration. Despite the slight dip in temperature from the previous months, where March peaks at 35°C (95°F), April maintains a pleasant maximum of 34°C (94°F). This gradual cooling trend continues into May, indicating a transition toward the cooler months ahead. Visitors can expect a delightful mix of warm days and cooler nights, making April a charming time to enjoy Arenal's lush landscapes.
In April, Arenal, Peru experiences a noticeable decrease in precipitation, recording just 19 mm (0.8 in) over the course of 2 days. This shift follows a notably wetter March, which saw 93 mm (3.7 in) of rainfall spread across 8 days. April's lighter showers continue the trend of diminishing rainfall as the region transitions into the dry months, with May and June expected to bring even less moisture. The drop in both precipitation amount and rainy days suggests a departure from the earlier months' heavier rains, hinting at a shift towards a more arid climate as the year progresses.
April in Arenal, Peru welcomes a slight dip in humidity, registering at 86%, which contributes to an increasingly comfortable atmosphere as the region transitions towards dryer months. This subtle decrease from 87% in previous months indicates a gradual shift in weather patterns as the year progresses. Following April, humidity levels will rise again in May, reflecting the area's characteristic tropical climate, but the trend suggests a promising respite from the more intense humidity of earlier months. Overall, April serves as a pivotal point in Arenal’s yearly climate, balancing warmth with refreshing breezes, making it an ideal time for outdoor exploration.
In April, Arenal, Peru continues to experience a high UV Index of 15, reflecting its classification within the extreme exposure category. This suggests that even a brief 10-minute outing can lead to skin damage without protection. Interestingly, while the UV Index remains slightly lower than the peak of 16 seen in March, it underscores the region's consistently intense sunlight during this period. With such high UV levels persisting from January through April, outdoor enthusiasts should prioritize sun safety measures as they explore this vibrant destination. For more details on the UV Index trends throughout the year, visit Arenal UV Index.
UV Risk Categories
April in Arenal, Peru, shines brightly with 324 hours of sunshine, contributing to a steady upward trend as the year progresses. Following a consistent increase from 275 hours in January to 302 in February and 317 in March, April marks an exciting peak in sunny days, paving the way for the warmer months ahead. This delightful surge continues into May, where residents and visitors can enjoy the sun for 334 hours. The pattern suggests that as the region transitions deeper into the year, the allure of Arenal intensifies, promising abundant sunshine and perfect conditions for outdoor adventures in nature's embrace.
In Arenal, Peru, the likelihood of sunny weather takes a notable leap in April, with a 39% chance of sunshine, marking a significant improvement compared to the preceding months. This uptick signals the onset of drier conditions, as the region transitions from the wetter early part of the year. April stands out as a turning point in sunshine probability, outpacing both March's 28% and the early rainy season, suggesting that outdoor enthusiasts might have an excellent opportunity to explore the natural beauty of Arenal. As the months progress, the chance of sun continues to rise, peaking in May at 63%, making April an enticing prelude to the sun-soaked days that follow.
In Arenal, Peru, the daylight duration showcases a fascinating pattern throughout the year. From January to March, residents bask in a consistent 12 hours of daylight, creating a bright atmosphere perfect for outdoor adventures. However, as April arrives, daylight diminishes slightly to 11 hours, a change that continues through the following months of May to August. This consistent reduction signals a shift into the drier season, leading into lush green environments ideal for exploration. As September rolls in, daylight begins to surge again, returning to 12 hours and maintaining this length through to December, ensuring that the vibrant landscapes of Arenal remain well-lit and inviting for all who visit.
As April unfolds in Arenal, Peru, the winds begin to pick up, registering an average speed of 3.4 m/s (8 mph)—a continuation of the slightly breezier conditions seen in February and a modest increase from the previous month. This trend suggests that as the seasons shift, the winds tend to gain momentum, setting the stage for the coming months. Following April, wind speeds gradually rise, peaking at around 4.0 m/s (9 mph) in October. This steady escalation over the year not only enhances the region’s vibrant climate but also invites adventurers and nature enthusiasts to embrace the invigorating breeze while exploring Arenal’s stunning landscapes.
Weather in Arenal varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Arenal, focusing on differences in temperature, rainfall, humidity, and UV levels.
April and January share similar average temperatures, both hovering around 25°C (78°F) with maximums reaching 34°C (94°F). However, April typically experiences slightly lower humidity at 86%, compared to January's 89%. In terms of precipitation, January has a bit more rain, averaging 10 mm (0.4 in) over three days, while April sees less at 19 mm (0.8 in) over two days. Overall, both months maintain warm conditions, but April tends to be a tad less humid. For more detailed information, you can check Arenal weather in January.
April and February exhibit similar temperature ranges, with both months experiencing maximums of 34°C (94°F). However, April has slightly lower minimum temperatures, averaging 18°C (65°F), compared to February's 20°C (68°F). February is characterized by more precipitation, accumulating 42 mm (1.7 in) over six days, while April sees significantly less rainfall at 19 mm (0.8 in) across just two days. Additionally, humidity levels are quite close, with April at 86% and February slightly higher at 87%. For a detailed look at February's weather patterns, check out Arenal weather in February.
April sees a slight decrease in temperature compared to March, with minimum temperatures dropping from 21°C (69°F) in March to 18°C (65°F) in April. The average temperature for April is also a bit lower at 25°C (78°F) compared to March’s average of 27°C (80°F). Both months experience relatively high humidity, though April maintains a similar level at 86%, just slightly below March's 87%. Additionally, April has significantly less precipitation, with only 19 mm (0.8 in) over 2 days, whereas March receives 93 mm (3.7 in) across 8 days, indicating that April is a drier month overall. For more detailed information about weather in March, you can check Arenal weather in March.
In April, the weather is warmer, with average temperatures reaching around 25°C (78°F) and highs of 34°C (94°F), while May sees slightly cooler averages at 23°C (74°F) and maximums of 32°C (91°F). April also experiences higher precipitation, with 19 mm (0.8 in) over two days, compared to May’s drier conditions with just 6 mm (0.2 in) in the same number of days. Humidity levels are quite similar, remaining high at 86% in April and rising slightly to 89% in May. For a more detailed overview of May weather, you can refer to Arenal weather in May.
April and June offer contrasting weather experiences. In April, temperatures range from a minimum of 18°C (65°F) to a maximum of 34°C (94°F), with an average of 25°C (78°F). This month sees a fair amount of precipitation, totaling 19 mm (0.8 in) over about 2 days, and the humidity remains relatively high at 86%. In contrast, June presents milder conditions, with temperatures ranging from a minimum of 17°C (63°F) to a maximum of 31°C (87°F) and an average temperature of 22°C (71°F). Notably, June features significantly less rainfall, with only 2 mm (0.1 in) and no rainy days, accompanied by slightly lower humidity levels at 84%. For more details on June weather, check out Arenal weather in June.
April and July exhibit distinct weather patterns. In April, temperatures range from a minimum of 18°C (65°F) to a maximum of 34°C (94°F), with an average of 25°C (78°F). This month also experiences higher humidity levels at 86% and receives some precipitation, totaling 19 mm (0.8 in) over 2 days. In contrast, July presents cooler conditions, with temperatures ranging from 16°C (60°F) to 27°C (82°F) and an average of 20°C (69°F). The humidity drops to 71%, and rainfall is negligible, at only 1 mm (0.1 in) over the entire month. For those interested in more details, you can check out Arenal weather in July.
April and August present quite contrasting weather patterns. In April, temperatures range from a minimum of 18°C (65°F) to a maximum of 34°C (94°F), accompanied by high humidity at 86% and some rainfall, with an average precipitation of 19 mm over two days. In stark contrast, August sees cooler temperatures, with a minimum of 15°C (59°F) and a maximum of 27°C (82°F). The month is notably drier, with only 1 mm of precipitation and no rainy days, leading to a lower humidity level of 71%. For a more detailed look at August weather, check out Arenal weather in August.
April and September showcase distinct weather patterns. In April, temperatures range from a minimum of 18°C (65°F) to a maximum of 34°C (94°F), with an average of 25°C (78°F). The month experiences 19 mm (0.8 in) of precipitation over two days and comes with high humidity levels at 86%. In contrast, September enjoys milder temperatures, with a low of 15°C (60°F), an average of 20°C (69°F), and a high of 28°C (83°F). This month is much drier, receiving only 1 mm (0.1 in) of precipitation with no rainy days and lower humidity at 75%. For more information on September weather in Arenal, check out Arenal weather in September.
April tends to be warmer and more humid compared to October, with temperatures ranging from a minimum of 18°C (65°F) to a maximum of 34°C (94°F) and an average of 25°C (78°F). In contrast, October experiences cooler temperatures, with a minimum of 16°C (61°F), an average of 21°C (70°F), and a maximum of 29°C (85°F). Additionally, April sees more precipitation, with about 19 mm (0.8 in) falling over just 2 days, while October enjoys drier conditions with only 4 mm (0.1 in) of rain and no rainy days. Humidity levels are also higher in April at 86%, compared to 77% in October. For further details, you can check out this link: Arenal weather in October.
April and November present quite different weather conditions. In April, temperatures range significantly, with a minimum of 18°C (65°F) and a maximum reaching 34°C (94°F), creating warm and sometimes hot days. This month also experiences higher humidity, averaging around 86%, along with 19 mm of precipitation over 2 days.
In contrast, November sees cooler temperatures, with a minimum of 15°C (59°F) and a maximum of 30°C (86°F), making it more comfortable overall. The month is notably drier, with only 5 mm of precipitation occurring over just 1 day, and humidity levels at a lower average of 79%. For more details, you can check Arenal weather in November.
April and December exhibit strikingly similar weather patterns, yet each month has its own nuances. In April, temperatures range from a comfortable minimum of 18°C (65°F) to a warm maximum of 34°C (94°F), with an average of 25°C (78°F). There is slightly more rainfall, accumulating to 19 mm (0.8 in) over just 2 days, while humidity remains consistently high at 86%. In contrast, December sees a slight dip in temperatures, with a minimum of 17°C (64°F), an average of 23°C (74°F), and a maximum of 32°C (89°F). Precipitation is marginally lower at 16 mm (0.6 in) over three days, but the humidity stays the same at 86%. For more detailed information, you can check Arenal weather in December.
As April unfolds in Arenal, it brings a delightful mix of warmth and refreshment, with temperatures peaking at a comfortable 34°C. This month stands out with its relatively low precipitation, averaging just 19 mm over a couple of rainy days, making it drier compared to the wetter months that precede it. The high humidity at 86% adds a tropical feel, but it’s balanced by cooler evenings that dip to a pleasant 18°C. Overall, April offers a unique climate experience as it transitions from the lush greenery of earlier months to a more tranquil, yet vibrant, environment. For a deeper dive into the weather patterns, check out Arenal Climate.