Last updated: August 27, 2025
March in Arenal, Peru brings a captivating mix of warmth and humidity, making it a vibrant time for exploration. With maximum temperatures peaking at 35°C (95°F) and an average of 27°C (80°F), visitors can expect a tropical climate, while nighttime offers a comfortable minimum of 21°C (69°F). Rainfall plays a significant role in this month, as the region experiences approximately 93 mm (3.7 in) of precipitation over 8 days, contributing to the lush landscapes that Arenal is famous for. The high humidity at 87% adds to the tropical ambiance, creating a perfect backdrop for adventurous activities and stunning natural beauty.
In March, Arenal, Peru, experiences a delightful warming trend as temperatures rise, boasting a minimum of 21°C (69°F) and a pleasant average of 27°C (80°F), peaking at a toasty 35°C (95°F). This upward shift in temperatures is a notable continuation from February, which also showcased maximums reaching 34°C (94°F). As the region transitions towards the cooler months ahead, March stands out with its vibrant warmth, inviting visitors to bask in its tropical allure. This month symbolizes a fruitful blend of comfortable heat and refreshing humidity, perfectly setting the stage for outdoor adventures amidst the stunning natural landscapes of Arenal.
In March, Arenal experiences a notable surge in precipitation, with rain accumulating to 93 mm (3.7 in) over 8 days, marking a significant increase compared to previous months. This uptick follows February's substantial 42 mm (1.7 in), clearly signaling the transition into the wetter season. As the region gears up for its rainier months, the pattern indicates a robust shift, particularly in comparison to the almost dry spell that follows in April with just 19 mm (0.8 in) anticipated over merely 2 days. This trend hints at an engaging dynamic in Arenal's climate, where March stands out as the month that truly heralds the onset of the rainy season, invigorating the landscape and contributing to the lush biodiversity for which this region is renowned.
In March, the humidity in Arenal, Peru, remains steady at 87%, mirroring the levels of the previous month and indicating a consistent tropical atmosphere. This relative stability is part of a broader trend observed from January to April, where humidity gradually decreases from a high of 89% in January to 86% in April. As the region transitions from the wet season towards drier months, the humidity dips further into late spring and summer, reaching a notable low of 71% in July and August. This fluctuation not only highlights Arenal’s lush, vibrant climate but also sets the stage for the diverse ecosystems and activities that thrive in its humidity-rich environment.
March in Arenal, Peru experiences an exceptional UV Index level of 16, marking it as one of the peak months for sun exposure. With an extreme exposure category and a burn time of just 10 minutes, the intensity of sunlight is palpable, urging visitors and residents alike to take necessary precautions against harmful UV rays. Following a gradual increase since January, the UV Index peaks in March before slightly tapering off in April. This trend of high UV levels continues well into the surrounding months, consistently maintaining an extreme category, with February closely trailing March at a UV Index of 15. For those planning outdoor activities, it's crucial to stay informed and protected. To learn more about UV exposure in this vibrant region, visit Arenal UV Index.
UV Risk Categories
March in Arenal, Peru, marks a delightful transition as the region basks in 317 hours of sunshine. This increase from January's 275 hours reflects a pleasing trend of steadily climbing daylight, setting the stage for the months ahead. As Peruvians welcome the warmth, April continues this upward trajectory with 324 hours, peaking beautifully in May with 334 hours. This sunny spell, coupled with Arenal's stunning landscapes, creates an inviting atmosphere for outdoor adventures. The consistency of bright days through the year emphasizes Arenal's appeal, especially as the sun shines increasingly more in the heart of the Peruvian rainy season.
In Arenal, Peru, the likelihood of sunny weather in March is around 28%, making it one of the cloudier months of the year. While January and February both hold steady at 31%, the March forecast dips slightly, indicating a transitional phase as the region begins to shift towards the drier season. As April approaches, the chances of sunshine see a noticeable increase to 39%, heralding the start of more favorable weather. This upward trend continues into May, where the likelihood of sun skyrockets to 63%, revealing a promising shift for those looking to enjoy outdoor adventures.
In March, Arenal, Peru enjoys a consistent 12 hours of daylight, continuing the trend from both January and February. This pattern of extended daylight hours promotes vibrant outdoor activities and scenic explorations in the lush surroundings. As the year progresses into April, daylight begins to decrease slightly to 11 hours, a shift that remains steady through the following months. However, come September, the daylight duration bounces back to 12 hours again, signaling a rejuvenating rhythm in the region’s climate. This annual fluctuation highlights Arenal’s unique geographical position, offering a delightful balance of daylight, perfect for both adventure seekers and nature lovers alike.
As March rolls into Arenal, Peru, the winds begin to whisper at an average speed of 2.7 m/s (6 mph), marking a slight dip from the preceding months. This gentler breeze lingers before the shift in April, when winds regain their momentum, aligning back with the 3.4 m/s (8 mph) seen in both February and April. Observing the broader trend, it’s evident that the winds gradually strengthen as the year progresses, peaking in the late summer and early fall months with speeds reaching up to 4.0 m/s (9 mph) by October. This pattern not only enhances Arenal's vibrant natural beauty but also invites outdoor enthusiasts to embrace the shifting currents throughout the seasons.
Weather in Arenal varies notably across the year, with each month offering distinct climate conditions. This page compares March’s weather to other months in Arenal, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparison to January, March experiences warmer temperatures, with average daytime highs reaching 27°C (80°F) compared to January's 25°C (78°F). March also sees a slight rise in humidity at 87%, almost on par with January's 89%. However, the most notable difference is in precipitation; March has significantly more rainfall, averaging 93 mm (3.7 in) over 8 days, whereas January only receives 10 mm (0.4 in) over 3 days. For more detailed insights into January weather, you can check Arenal weather in January.
In comparing the weather of March and February, we observe that March experiences slightly higher temperatures, with a minimum of 21°C (69°F) and an average of 27°C (80°F), compared to February's minimum of 20°C (68°F) and average of 26°C (80°F). The maximum temperatures also reflect this trend, standing at 35°C (95°F) in March versus 34°C (94°F) in February. However, March is notably wetter, with 93 mm (3.7 in) of precipitation over 8 days, compared to February's 42 mm (1.7 in) over just 6 days, maintaining consistent humidity levels of 87% in both months. For more detailed insights into February's weather, you can check Arenal weather in February.
In comparing the weather between March and April, March tends to be hotter, with average temperatures reaching 27°C (80°F) and maximums hitting 35°C (95°F). In contrast, April experiences slightly cooler conditions, with an average of 25°C (78°F) and a maximum of 34°C (94°F). March also sees significantly higher precipitation, with 93 mm (3.7 in) of rain over 8 days, while April only receives 19 mm (0.8 in) over just 2 days. Interestingly, humidity remains fairly consistent, hovering around 87% in March and 86% in April. For more specific details about the weather in April, you can check out Arenal weather in April.
When comparing the weather in March and May, March tends to be warmer overall, with temperatures ranging from a minimum of 21°C (69°F) to a maximum of 35°C (95°F) and an average of 27°C (80°F). In contrast, May experiences slightly cooler temperatures, with a minimum of 16°C (62°F), an average of 23°C (74°F), and a maximum of 32°C (91°F). Additionally, March has significantly more precipitation, receiving 93 mm (3.7 in) over about 8 days, while May is much drier, with only 6 mm (0.2 in) falling across just 2 days. Despite the differences in rainfall and temperatures, May's humidity is slightly higher at 89%, compared to March's 87%. For more details on May's weather, you can visit Arenal weather in May.
March and June display notable differences in weather conditions. In March, temperatures range from a minimum of 21°C (69°F) to a maximum of 35°C (95°F), with an average temperature of 27°C (80°F). This month experiences a higher humidity level at 87% and sees about 93 mm (3.7 in) of precipitation over 8 days, contributing to a more humid atmosphere. In contrast, June offers cooler temperatures, with a range from 17°C (63°F) to 31°C (87°F) and an average of 22°C (71°F). Additionally, June is significantly drier, with only 2 mm (0.1 in) of precipitation and no rainy days, coupled with slightly lower humidity at 84%. For a detailed look at the weather in June, check out this link: Arenal weather in June.
In March, the weather is characterized by warmer temperatures, with a minimum of 21°C (69°F) and an average of 27°C (80°F), peaking at a maximum of 35°C (95°F). The month experiences significant rainfall, averaging 93 mm (3.7 in) over 8 days, accompanied by high humidity levels at 87%. In contrast, July presents a cooler climate, with temperatures ranging from a minimum of 16°C (60°F) to an average of 20°C (69°F) and a maximum of 27°C (82°F). Notably, July is much drier, with only 1 mm (0.1 in) of precipitation and no rainy days, leading to a lower humidity level of 71%. For more detailed information, you can check Arenal weather in July.
The weather in March is characterized by warmer temperatures and higher humidity levels compared to August. March boasts a minimum temperature of 21°C (69°F) and can reach up to 35°C (95°F), with an average of 27°C (80°F) and significant rainfall at 93 mm (3.7 in) over about 8 days. In contrast, August experiences cooler conditions with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 27°C (82°F), averaging at 20°C (68°F). Notably, August sees minimal precipitation, only 1 mm (0.0 in) throughout the month and no rainy days, along with a lower humidity level of 71%. For more details on the weather during this time, you can check Arenal weather in August.
March and September present contrasting weather patterns. In March, temperatures range from a mild 21°C (69°F) to a hot 35°C (95°F), with an average of 27°C (80°F). This month also experiences significant precipitation, totaling 93 mm (3.7 in) over approximately 8 days, and high humidity at 87%. In stark contrast, September sees much cooler temperatures, with a minimum of 15°C (60°F), an average of 20°C (69°F), and a maximum of 28°C (83°F). Additionally, September is remarkably dry, recording only 1 mm (0.1 in) of precipitation and experiencing zero rainy days, along with a lower humidity level of 75%. For more details on weather conditions during this month, check out Arenal weather in September.
In March, the weather is significantly warmer, with temperatures ranging from a minimum of 21°C (69°F) to a maximum of 35°C (95°F) and an average of 27°C (80°F). The month also sees considerable rainfall, with a total of 93 mm (3.7 in) spread over 8 days and high humidity at 87%. In contrast, October offers a cooler and drier climate, featuring temperatures that range from a minimum of 16°C (61°F) to a maximum of 29°C (85°F) and an average of 21°C (70°F). Remarkably, October experiences only 4 mm (0.1 in) of precipitation without any rainy days, along with a lower humidity of 77%. For more information on the Arenal weather in October, visit Arenal weather in October.
In March, the weather is significantly warmer and more humid, with average temperatures ranging from a minimum of 21°C (69°F) to a maximum of 35°C (95°F), and high humidity at 87%. Additionally, March experiences more rainfall, with around 93 mm (3.7 in) of precipitation over 8 days. In contrast, November features cooler temperatures, with an average ranging from a minimum of 15°C (59°F) to a maximum of 30°C (86°F). The month is much drier, with only 5 mm (0.2 in) of precipitation occurring on just 1 day, and humidity levels at a lower 79%. For a more detailed look at the weather in November, visit Arenal weather in November.
In March, the weather is markedly warmer and more humid compared to December, with temperatures ranging from a minimum of 21°C (69°F) to a maximum of 35°C (95°F) and an average of 27°C (80°F). This month also sees higher levels of precipitation, with around 93 mm (3.7 in) falling over approximately 8 days, creating a humid environment at 87% humidity. In contrast, December experiences milder temperatures, ranging from a minimum of 17°C (64°F) to a maximum of 32°C (89°F), with an average temperature of 23°C (74°F). The precipitation drops significantly to just 16 mm (0.6 in) over 3 days, resulting in a slightly lower humidity of 86%. For more detailed insights into December weather, you can check Arenal weather in December.
In March, Arenal experiences a warm and humid climate, with temperatures reaching a maximum of 35°C (95°F) and an average of 27°C (80°F). This month stands out due to increased rainfall, totaling 93 mm (3.7 in) over about 8 days, resulting in a refreshing yet humid atmosphere, where humidity sits at an impressive 87%. Compared to other months, March offers a unique blend of heat and moisture, making it a lively time for the local ecosystem. For more insights on what to expect throughout the year, visit Arenal Climate.