Last updated: August 27, 2025
In Arenal, Peru, July offers a delightful climate characterized by a comfortable average temperature of 20°C (69°F), with daily highs reaching a pleasant 27°C (82°F). Visitors can expect balmy evenings as nighttime temperatures dip to a mild 16°C (60°F). This month boasts an impressive precipitation level of just 1 mm (0.1 in), with no rainy days, making it an ideal time for outdoor adventures. With humidity levels around 71%, the weather supports a lush environment and enhances the beauty of Arenal’s breathtaking landscapes.
In July, Arenal, Peru experiences a notable shift in temperatures as the region cools down slightly, offering a refreshing break to its year-round humidity. The minimum temperature dips to 16°C (60°F), providing a crisp start to the day, while the average temperature settles at 20°C (69°F), making it the ideal time for outdoor adventures. With a maximum of 27°C (82°F), daytime activities remain pleasant and enjoyable, though cooler evenings invite a cozy atmosphere. As part of the mid-year transition, these temperatures mark the start of a cooler stretch that continues into August, allowing visitors to experience Arenal's lush landscapes under mild weather conditions.
In July, Arenal, Peru, experiences a notable dip in precipitation, with just 1 mm of rainfall recorded, marking it as one of the driest months of the year. This pattern follows a gradual decline from the wetter months of January through March, where rainfall peaks at 93 mm in March, down to 2 mm in June. Interestingly, July has no recorded rainy days, indicating a significant shift to dry conditions that continue into the following months of August and September, which also see minimal precipitation. This trend underscores Arenal's transition into a drier phase, offering a glimpse of the region's variably climatic conditions throughout the year.
In July, Arenal, Peru experiences a notable drop in humidity, averaging 71%, which is among the lowest in the year. This decline marks a significant shift from the consistently high humidity levels seen earlier in the year, where the figures hovered around 86% to 89%. Following the humid months of January through May, this respite in July, coupled with the similar conditions in August, creates a more comfortable atmosphere for outdoor activities and exploration. As the monsoon season approaches in the latter part of the year, humidity levels gradually rise once again, underscoring the distinct seasonal patterns that characterize Arenal’s climate.
In July, Arenal, Peru experiences a UV Index of 11, maintaining its status in the extreme exposure category with a consistent burn time of just 10 minutes. This marks a continuation of the high UV levels witnessed from January through June, with peaks reaching up to 16 in March. Although the UV Index slightly dips in July compared to the early months, it's still crucial for visitors and locals alike to take protective measures when outdoors. The trend shows that the intense sun exposure remains a constant through most of the year. For more detailed information, visit Arenal UV Index.
UV Risk Categories
July shines brightly in Arenal, Peru, with an impressive 327 hours of sunshine, contributing to a vibrant summer atmosphere. This month stands as a part of a notable trend where daylight gradually intensifies from early in the year. After a steady climb from 275 hours in January, July continues the upward trajectory seen through the first half of the year, peaking just before the sunniest months ahead in August and October. As the days warm up and the sun casts longer shadows, July not only offers a delightful blend of warmth and brightness but also sets the stage for the mesmerizing natural beauty that Arenal is renowned for, inviting travelers to bask in its luminous charm.
In Arenal, Peru, July brings a marked shift in weather patterns, with the likelihood of sunny days peaking at 56%—a refreshing contrast to the overcast skies of previous months. As the region transitions from the wetter months of June and May, which see chances of sun at 43% and 63% respectively, July offers an inviting blend of warmth and brightness. This upward trend in sunshine continues into the late months of the year, making July an ideal time to explore the stunning landscapes of Arenal. Travelers can expect not only pleasant weather but also vibrant natural beauty, as the region basks in the glory of its sunniest month.
In Arenal, Peru, daylight duration remains remarkably steady throughout the year, with January to March basking in a generous 12 hours of sunlight each day. As the year progresses into April, daylight begins to wane slightly, dipping to 11 hours and persisting at this duration through July and August. However, as September arrives, the days once again stretch out to 12 hours, rekindling that sunny abundance as the year approaches its end in October, November, and December. This harmonious rhythm of daylight underscores Arenal’s equatorial climate, where dramatic shifts in sunlight are more a gentle transition than a harsh contrast.
In July, Arenal, Peru experiences a pleasant average wind speed of 3.6 m/s (approximately 8 mph), maintaining the steady breezy conditions typical of mid-year. As we look at the months leading up to July, there's a noticeable trend of gradually increasing wind speeds, peaking in June. However, this slight dip in July doesn't detract from the overall summery ambiance. The winds seem to pick up momentum once again in August, reaching 3.9 m/s (9 mph) and continuing into September and October, suggesting a transition towards brisker breezes as the dry season unfolds. This rhythmic cadence of wind patterns enhances the vibrant atmosphere of Arenal, making it an enticing destination for outdoor enthusiasts and nature lovers alike.
Weather in Arenal varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in Arenal, focusing on differences in temperature, rainfall, humidity, and UV levels.
When comparing the weather in July and January, notable differences emerge. In July, temperatures range from a mild 16°C (60°F) at night to a comfortable average of 20°C (69°F) during the day, with a maximum of 27°C (82°F). This month is characterized by hardly any precipitation, receiving just 1 mm (0.1 in) over zero days, and a lower humidity of 71%.
In contrast, January brings warmer weather with minimum temperatures of 19°C (66°F) and an average of 25°C (78°F), peaking at a high of 34°C (94°F). Rainfall also increases during this month, accumulating to 10 mm (0.4 in) over three days, along with higher humidity at 89%. For more details, you can check out Arenal weather in January.
July and February showcase notable differences in weather patterns. In July, temperatures range from a mild 16°C (60°F) to a maximum of 27°C (82°F), with very little precipitation—only 1 mm (0.1 in) recorded over no rainy days, resulting in a humidity level of 71%. In contrast, February is significantly warmer, with temperatures starting at a minimum of 20°C (68°F) and peaking at 34°C (94°F), accompanied by 42 mm (1.7 in) of rain over six days and a higher humidity of 87%. For a more detailed look at the weather during this month, check out Arenal weather in February.
July and March present quite different weather patterns. In July, temperatures are milder, with a minimum of 16°C and a maximum of 27°C, while average humidity is at a comfortable 71%. Notably, July experiences very little rainfall, with only 1 mm recorded and no rainy days. In contrast, March brings much warmer weather, with temperatures ranging from a minimum of 21°C to a scorching maximum of 35°C, and an average temperature of 27°C. March is also much wetter, with 93 mm of precipitation over 8 days and humidity levels rising to 87%. For a detailed look at conditions during this time, you can check out Arenal weather in March.
In comparing the weather between April and July, April features higher temperatures with a minimum of 18°C (65°F) and an average of 25°C (78°F), peaking at a scorching 34°C (94°F). In contrast, July is milder, 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). Additionally, April experiences significantly more precipitation, averaging 19 mm (0.8 in) over two days, while July remains remarkably dry with only 1 mm (0.1 in) and zero days of rain. Humidity is also higher in April at 86%, compared to July's 71%. For more details on Arenal's weather during April, you can explore Arenal weather in April.
In May, temperatures are generally warmer with an average of 23°C (74°F) and a maximum of 32°C (91°F), compared to July's cooler average of 20°C (69°F) and a maximum of 27°C (82°F). Despite both months sharing a similar minimum temperature of 16°C, May experiences higher humidity at 89%, while July's humidity is slightly lower at 71%. Additionally, May has more precipitation, totaling 6 mm (0.2 in) over 2 days, whereas July remains largely dry with only 1 mm (0.1 in) and no rainy days. For a detailed look at the weather conditions in May, visit Arenal weather in May.
In comparing the weather of July and June, July shows a slight decrease in average temperature, with minimums around 16°C (60°F) and maximums reaching 27°C (82°F), while June presents warmer conditions with minimums of 17°C (63°F) and maximums hitting 31°C (87°F). Both months experience minimal precipitation, with July having just 1 mm and June slightly higher at 2 mm, yet neither month sees any rainy days. Humidity is higher in June at 84% compared to July’s 71%, making June feel more muggy despite having warmer temperatures. For more details on June weather specifically, check out Arenal weather in June.
In comparing the weather between July and August, we see notable similarities with only minor variations. Both months boast an average temperature of around 20°C (68°F), with maximum temperatures reaching 27°C (82°F) and minimums slightly different—a 16°C (60°F) low in July compared to 15°C (59°F) in August. Precipitation remains scarce in both months, with only 1 mm recorded and no rainy days in either month. Humidity levels are consistent at 71%, creating a comfortable atmosphere. For more specific details, you can visit Arenal weather in August.
In comparing the weather between July and September, we see that both months exhibit similar average temperatures, with July having a minimum of 16°C and September slightly cooler at 15°C. Both months enjoy dry conditions, with only 1 mm of precipitation recorded and no rainy days. However, September tends to be a touch warmer, reaching a maximum of 28°C compared to July's 27°C. Additionally, humidity levels rise slightly in September to 75%, from 71% in July, creating a more muggy atmosphere. For a detailed look at September weather, check out Arenal weather in September.
July and October in Arenal feature mild temperatures, but October tends to be slightly warmer. In July, temperatures range from a minimum of 16°C (60°F) to a maximum of 27°C (82°F), with an average temperature of 20°C (69°F) and minimal precipitation. In contrast, October sees a minimum temperature of 16°C (61°F) and a maximum of 29°C (85°F), with an average of 21°C (70°F), and while it has a bit more rainfall at 4 mm (0.1 in), there are still no rainy days. Additionally, humidity levels rise from 71% in July to 77% in October. For more detailed seasonal insights, visit Arenal weather in October.
In July, the weather tends to be mild with temperatures ranging from a minimum of 16°C (60°F) to a maximum of 27°C (82°F), and very little precipitation, averaging only 1 mm (0.1 in) over no rainy days. Humidity is relatively comfortable at 71%. In contrast, November experiences slightly warmer temperatures, with a minimum of 15°C (59°F) and a maximum reaching 30°C (86°F). However, it also brings increased rainfall, totaling 5 mm (0.2 in) over just one rainy day, and a higher humidity level at 79%. For more specific details about the weather during this month, you can visit Arenal weather in November.
In July, the weather is generally mild with average temperatures ranging from a minimum of 16°C (60°F) to a comfortable maximum of 27°C (82°F). This month features very little rainfall, with only 1 mm (0.1 in) of precipitation recorded over a span of 0 days, alongside a humidity level of 71%. In contrast, December experiences warmer temperatures, with averages between 17°C (64°F) and 32°C (89°F), marking it as a hotter month. However, it also sees an increase in rainfall, totaling 16 mm (0.6 in) over 3 days, and a higher humidity level of 86%. For more detailed weather insights, check out Arenal weather in December.
In July, Arenal's weather is strikingly pleasant, characterized by warm temperatures and notably low precipitation, setting it apart from other months. With daytime highs reaching a comfortable 27°C (82°F), the average temperatures remain mild at around 20°C (69°F), making it an ideal time for outdoor adventures. Unlike the wetter months, July boasts remarkably dry conditions, with almost no precipitation recorded, allowing visitors to fully enjoy the lush beauty of the region without the interruption of rain. The moderate humidity of 71% provides a refreshing atmosphere, perfect for exploring the stunning landscape. For a deeper dive into Arenal's climate throughout the year, check out Arenal Climate.