Last updated: August 21, 2025
In August, Heredia, Costa Rica, experiences a delightful blend of tropical weather, characterized by maximum temperatures reaching 26°C (79°F) and an average of 19°C (66°F). The month is relatively wet, with precipitation totaling 304 mm (12.0 in) over an impressive 28 days, creating a lush and vibrant landscape. The high humidity level of 82% adds to the tropical ambiance, making it essential for visitors to embrace the warmth and occasional downpours. Whether you're exploring the scenic beauty or seeking refuge from the rain, August in Heredia is a month filled with rich experiences and vibrant energy.
In August, Heredia, Costa Rica experiences mild and pleasant temperatures that mirror the patterns of previous months. The average temperature settles around 19°C (66°F), with daily highs reaching a comfortable 26°C (79°F) and lows resting at about 15°C (59°F). This slight increase in warmth compared to July, where the max was 25°C (77°F), suggests a gradual transition into warmer days, while still maintaining the cool, refreshing climate that characterizes this beautiful region. As the wet season progresses, humidity may rise, but August's temperatures remain inviting, making it an ideal time for exploring Heredia's lush landscapes and vibrant culture.
In August, Heredia experiences a significant rainfall of 304 mm (12.0 in) over 28 days, marking a continuation of the wet season that began in May. This month is characterized by a moderate precipitation total, not quite reaching the peaks of the preceding months but still contributing to the lush, vibrant landscape that Costa Rica is known for. With rainfall steadily declining from June's hefty total of 341 mm (13.4 in) and preceding September’s even higher average, August serves as a transitional period that keeps the region well-watered while setting the stage for the heavier downpours of October. This fluctuation in rainfall patterns highlights the dynamic weather that characterizes the tropical climate of Heredia, where even in peak rainy months, the beauty of the surroundings thrives.
In August, Heredia, Costa Rica, experiences a significant level of humidity, with an average of 82%, reflecting the peak of the rainy season. This month is notably less humid than the preceding July, which boasts a high 85%, but it remains markedly more humid than the drier onset of the year, where levels hover around 68% in January and February. As the year progresses, humidity levels generally rise, peaking in June and July before beginning a slight decline into the fall months. This trend highlights the tropical climate's impact on daily life, ensuring that August maintains a lush, vibrant landscape, characteristic of the region.
In August, Heredia, Costa Rica continues to experience intense solar exposure with a UV Index of 14, classifying it within the extreme exposure category. This trend aligns with the previous months, where UV levels have consistently registered between 14 and 16, indicating that residents and visitors should remain vigilant about sun protection. With a burn time of just 10 minutes, it's essential to seek shade and apply sunscreen regularly to mitigate the risk of skin damage. As the year progresses, the UV Index remains notably high, emphasizing the importance of being sun-smart throughout the tropical climate. For more detailed information, check out the Heredia UV Index.
UV Risk Categories
August in Heredia, Costa Rica, enjoys a delightful 236 hours of sunshine, nestled between the peak brightness of March with 329 hours and the lush green days of the rainy season that follow. While August marks a slight dip from the sun-soaked heights of earlier months, it still showcases a comfortable amount of sunlight compared to the preceding July, which had only 229 hours. This pattern reveals an overall trend of vibrant sunshine that peaks in the early months of the year, tapering into a lush, verdant landscape as the season progresses. The interplay of sunshine and rainfall throughout the year fosters a stunning environment for both nature lovers and outdoor enthusiasts in this captivating region.
August in Heredia, Costa Rica, is characterized by a notably low likelihood of sunny weather, with only a 6% chance of sunshine. This trend marks a sharp decline from the earlier months, particularly when compared to the lively, sun-kissed days found in January (47%) and December (43%). As the region transitions into its rainy season, the chances of encountering overcast skies and frequent showers increases sharply, which continues into September and October. While the lush landscapes benefit from the moisture, visitors hoping for sunshine during this month may want to plan accordingly, embracing the charm of the season’s vibrant greenery instead.
In Heredia, Costa Rica, August enjoys a consistent 12 hours of daylight, a continuation of the trend established in the preceding months from March through September. This period showcases a remarkable stability in daylight hours, where the sun graces the region with ample light, perfect for outdoor activities and exploring the lush landscapes. Following August, daylight begins to taper off slightly in October, settling to 11 hours as the region transitions towards the end of the year. Overall, this pattern reflects Heredia’s unique tropical climate, where daylight remains relatively uniform, enhancing the natural beauty and vibrant culture of this enchanting locale.
In Heredia, Costa Rica, August brings the calmest winds of the year, with an average speed of only 1.2 m/s (3 mph). This dip in wind velocity is part of a broader trend as the year progresses; following a marginally breezy April and May, the winds gradually diminish through the mid-year months of June and July. Interestingly, August marks the seasonal low before a slight uptick in November, where winds start to regain strength, climbing to 1.8 m/s (4 mph). Overall, the gentle breezes of this month create a serene atmosphere, perfect for enjoying the lush landscapes and cooler temperatures that define this charming region of Costa Rica.
Weather in Heredia varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Heredia, focusing on differences in temperature, rainfall, humidity, and UV levels.
August and January present contrasting weather conditions. August features a warmer climate with average temperatures around 19°C (66°F) and highs reaching 26°C (79°F). However, it is also the wettest month, receiving 304 mm (12.0 in) of precipitation over 28 days, resulting in high humidity levels averaging 82%. In contrast, January is cooler with average temperatures of 17°C (63°F) and maximums of 24°C (76°F). The precipitation is significantly less, totaling 93 mm (3.7 in) over just 11 days, and the humidity is lower at 68%. For more specific details about January weather, you can visit Heredia weather in January.
In comparing the weather of August to February, August presents a warmer and more humid picture, with average temperatures ranging from 15°C (59°F) to a maximum of 26°C (79°F) and high humidity levels reaching 82%. The month is also characterized by significant precipitation, totaling 304 mm (12.0 in) over 28 days, making it one of the wettest months. In contrast, February enjoys milder temperatures, with an average ranging from 11°C (52°F) to 25°C (78°F), and significantly lower precipitation of only 43 mm (1.7 in) spread over 12 days. February’s lower humidity of 68% further distinguishes it as a drier and more comfortable month. For a closer look at February weather specifics, you can visit Heredia weather in February.
In comparing the weather of August and March, August tends to be much wetter and more humid. The average temperature in August ranges from a minimum of 15°C (59°F) to a maximum of 26°C (79°F), with an average of 19°C (66°F). In contrast, March sees slightly milder conditions with minimum temperatures around 11°C (53°F), an average of 18°C (64°F), and maximums reaching 25°C (76°F). While August experiences significant rainfall of 304 mm (12.0 in) over 28 days, March is considerably drier, with only 49 mm (1.9 in) of precipitation across 14 days. The humidity is also higher in August at 82%, compared to March's 66%. For a more detailed look at March weather, you can check Heredia weather in March.
When comparing the weather between April and August, we see some notable differences. Both months feature a similar average temperature of 19°C (66°F), with daily highs reaching around 26°C (80°F) in April and 26°C (79°F) in August. However, August experiences significantly more precipitation, totaling 304 mm (12.0 in) across 28 days, compared to April's 113 mm (4.4 in) over 23 days. Additionally, humidity is notably higher in August at 82%, whereas April has a more manageable 67% humidity level. For more seasonal insights, you can check Heredia weather in April.
When comparing the weather in August and May, both months exhibit similar average temperatures, hovering around 19°C (66°F). However, August tends to experience slightly lower minimum temperatures at 15°C (59°F) compared to May's 14°C (58°F). Notably, May brings higher precipitation levels, with 425 mm (16.7 in) over 29 days, while August has 304 mm (12.0 in) spread across 28 days. Additionally, the humidity is significantly higher in August at 82%, compared to May’s 69%. For more detailed information, check out Heredia weather in May.
In comparing the weather of August and June, we find that both months share similar temperature ranges, with minimums around 15°C (59°F), averages of approximately 19°C (66°F), and maximums reaching 26°C (79°F). However, June experiences slightly higher precipitation levels at 341 mm (13.4 in) compared to August's 304 mm (12.0 in), even though both months see rain on about 28 days. Humidity levels are also very comparable, with June at 84% and August at 82%. For those interested in a detailed look at June’s climate specifics, check out Heredia weather in June.
In comparing the weather of August and July, we see that both months share similar temperature ranges, with minimums around 15°C (59°F) and average temperatures of 19°C (66°F). However, August tends to be slightly warmer, reaching a maximum temperature of 26°C (79°F), compared to July's maximum of 25°C (77°F). Precipitation is notably higher in August, with 304 mm (12.0 in) falling over 28 days, compared to July's 266 mm (10.5 in) during the same number of days. Humidity levels also vary slightly, with August's average at 82% and July's at 85%. For more details on the weather conditions in July, you can check Heredia weather in July.
August and September share similar average temperatures, with both months hovering around 19°C (66°F). However, August tends to have slightly warmer maximum temperatures, reaching up to 26°C (79°F) compared to September's peak of 25°C (78°F). In terms of precipitation, September experiences a notable increase, with 379 mm (14.9 in) of rainfall over 29 days, compared to August's 304 mm (12.0 in) over 28 days. Humidity levels remain relatively consistent, with August at 82% and September at 81%. For more detailed information, visit Heredia weather in September.
August and October share similar average temperatures, both hovering around 19°C (66°F), but October tends to be slightly cooler, with a maximum of 25°C (78°F) compared to August's 26°C (79°F). However, October experiences significantly higher rainfall, with 517 mm (20.4 in) compared to August's 304 mm (12.0 in), resulting in wetter conditions for the month. Additionally, while both months have high humidity levels, August sees a marginally higher rate at 82% compared to October's 80%. For more details on weather conditions during this time, check out Heredia weather in October.
August and November weather in Heredia exhibit some noticeable similarities and differences. In August, temperatures range from a minimum of 15°C (59°F) to a maximum of 26°C (79°F), with an average of 19°C (66°F). The month is characterized by substantial rainfall, totaling 304 mm (12.0 in) over 28 days, and a high humidity level of 82%. In contrast, November sees slightly cooler temperatures, with a minimum of 14°C (57°F) and a maximum of 24°C (75°F), averaging 18°C (65°F). Rainfall decreases to 260 mm (10.3 in) over 24 days, and humidity remains relatively high at 80%. For a deeper dive into the specifics of November weather, check out Heredia weather in November.
August and December present contrasting weather patterns. In August, temperatures range from a minimum of 15°C to a maximum of 26°C, with an average of 19°C. The month is characterized by significant rainfall, accumulating 304 mm over 28 days, and high humidity at 82%. In comparison, December sees slightly milder temperatures, with a minimum of 12°C and a maximum of 24°C, averaging 18°C. Precipitation decreases to 156 mm over just 16 days, accompanied by lower humidity at 72%. For more details, you can check Heredia weather in December.
August in Heredia is characterized by consistently mild temperatures and high humidity, making it distinct from the drier months of the year. With an average temperature hovering around 19°C (66°F), the days feel comfortably warm, yet evenings can bring a refreshing coolness. This month sees a significant uptick in precipitation, with rain falling on nearly every day, contributing to a lush, green landscape typical of Costa Rica's rainy season. If you're planning a visit, prepare for a moist tropical experience that beautifully contrasts with the more arid conditions of earlier months. For a deeper dive into Heredia's climate year-round, visit Heredia Climate.