Last updated: August 21, 2025
April in Atenas, Costa Rica, presents a vibrant climate characterized by warm temperatures and rich humidity. With highs reaching 31°C (89°F) and an average of 24°C (76°F), the weather is pleasantly inviting, although nighttime brings cooler lows around 18°C (64°F). This month is also notable for its significant rainfall, accumulating to 118 mm (4.6 in) over 24 days, contributing to the lush greenery that defines the region. The humidity level of 67% adds to the tropical ambiance, making it an ideal time for nature enthusiasts to explore the stunning landscapes and diverse wildlife that Atenas has to offer.
In Atenas, Costa Rica, April offers a delightful blend of warmth and comfortable temperatures, making it an ideal time to experience the region's vibrant landscape. With daily minimums hovering around 18°C (64°F) and maximums peaking at about 31°C (89°F), visitors can expect pleasant days complemented by refreshing evenings. The average temperature remains steady at 24°C (76°F), akin to March, indicating a smooth transition as the region prepares for the slightly warmer months ahead. As the dry season draws to a close, April encapsulates the beauty of Atenas, inviting outdoor adventures while maintaining a cozy climate that's hard to resist.
April marks a significant transition in Atenas, Costa Rica, as the region experiences a dramatic increase in precipitation, receiving a substantial 118 mm (4.6 in) over the month. This surge contrasts sharply with the preceding months, which recorded much lower rainfall—January had only 28 mm and February a mere 13 mm. April stands out not just for the amount of rain, but also the frequency, as the region sees rain on 24 days, indicating the onset of the wet season. This rainfall paves the way for lush landscapes and vibrant flora, setting the stage for the heavier downpours that follow in May and June, when precipitation skyrockets to 412 mm (16.2 in) and 397 mm (15.6 in), respectively. April’s rainfall is a harbinger of the dramatic shift to a more humid environment, emphasizing Atenas’s tropical climate and the vital role of seasonal rains in sustaining its verdant beauty.
In Atenas, Costa Rica, April brings a slight dip in humidity, with levels averaging 67%. This marks a gentle decline from the preceding months, January through March, when humidity hovered around 68% and 66%. As the region transitions into the rainy season, May sees an increase to 69%, signaling the onset of a more humid climate that peaks dramatically in the mid-year months. Overall, while April enjoys relatively mild humidity, it sets the stage for the more tropical, moisture-laden months ahead.
In April, the UV Index in Atenas, Costa Rica remains notably high at 15, placing it firmly in the extreme exposure category with a quick burn time of just 10 minutes. This trend continues from March, which also recorded a UV Index of 15, highlighting the intensity of sunlight during this time of year. As we move from the peak summer months into early spring, the UV Index remains consistently elevated, with only a slight decrease expected in May. For those enjoying outdoor activities, it’s crucial to stay protected, as the sun's rays can be harsh. For more detailed insights, visit Atenas UV Index.
UV Risk Categories
In April, Atenas, Costa Rica, enjoys a delightful balance of sunshine, boasting a commendable 300 hours of bright daylight. This warmth follows the upward trend experienced in the previous months, with March leading the way at 329 hours of sun. While April's hour count slightly dips, it remains significantly higher than the later months, such as May with 235 hours and June at 226 hours. The pattern reveals that as the dry season peaks, sun-seekers can bask in a generous amount of light before a gradual decrease as the rainy season approaches. This striking contrast highlights April as an optimal month for outdoor adventures under the Costa Rican sun.
As April arrives in Atenas, Costa Rica, the likelihood of sunny weather takes a noticeable dip, with only 24% chance of sunshine—one of the lowest in the year. This marks a significant decline from the earlier months, with January boasting 57% sunshine chances. As the dry season transitions into the rainy months following April, the probabilities continue to decrease, plummeting to as low as 7% in August. Consequently, nature lovers and travelers seeking the sun may want to make the most of the earlier months to enjoy the brighter skies before the April clouds roll in.
In Atenas, Costa Rica, April marks a delightful transition in daylight duration, maintaining a consistent 12 hours of sunlight, similar to the previous month of March. This trend of extended daylight continues from March through June, providing residents and visitors ample time to bask in the vibrant beauty of this tropical paradise. Following April, the daylight duration plateaus at 12 hours for several months before gradually tapering off in October to 11 hours. This pattern reveals a remarkable consistency in daylight, allowing for vibrant outdoor activities and exploration throughout the heart of the Central American dry season.
In Atenas, Costa Rica, the April wind offers a gentle breeze, with average wind speeds dipping to 1.5 m/s (3 mph), slightly lower than the preceding months. This gradual decline from 2.1 m/s in March indicates a transition into the heart of the dry season. Overall, April’s winds are among the calmest of the year, setting the stage for a serene environment as temperatures rise. As the month progresses into May, wind speeds further decrease to 1.3 m/s, indicating a more stable atmosphere typical of this time of year. This trend of lower wind speeds, particularly in the latter half of the dry season, highlights the unique climatic rhythm of Atenas, making it a perfect time for visitors to enjoy tranquil outdoor experiences amidst the stunning scenery.
Weather in Atenas varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Atenas, focusing on differences in temperature, rainfall, humidity, and UV levels.
April and January exhibit quite similar temperature ranges, with both months featuring a minimum of around 17-18°C and maximums peaking at 31°C. However, April tends to be warmer on average, with an average temperature of 24°C compared to January's 23°C. A notable contrast between the two months is the precipitation; April experiences significantly higher rainfall at 118 mm over 24 days, whereas January sees much less, with only 28 mm over 7 days. Both months maintain a high humidity level, with January slightly higher at 68% compared to April's 67%. For more detailed insights, you can check Atenas weather in January.
April experiences slightly warmer temperatures compared to February, with minimums of 18°C (64°F) versus February's 16°C (62°F). Both months have the same average temperature of 24°C (76°F) and maximums that reach up to 31°C (89°F for April and 88°F for February). However, April is notably wetter, receiving 118 mm (4.6 in) of precipitation over 24 days, whereas February sees a much drier climate with only 13 mm (0.5 in) of rainfall over just 3 days. Humidity levels are fairly consistent, with April at 67% and February slightly higher at 68%. For more detailed insights, check out Atenas weather in February.
In comparing the weather between March and April, we can observe some notable differences. March tends to have slightly higher average temperatures, ranging from a minimum of 18°C (64°F) to a maximum of 32°C (89°F), with an average of 25°C (77°F). In contrast, April features a lower average of 24°C (76°F) and temperatures that peak at 31°C (89°F). Precipitation in April is significantly higher, totaling 118 mm (4.6 in) over 24 days, while March experiences only 18 mm (0.7 in) across just 4 days of rain. Humidity levels remain quite similar in both months, with March at 66% and April at 67%. For more details on March weather, you can check Atenas weather in March.
April experiences slightly warmer temperatures with a minimum of 18°C (64°F) and a maximum of 31°C (89°F), while May sees a marginal rise in the minimum temperature to 19°C (67°F), but a lower maximum of 30°C (86°F). Both months have similar average temperatures around 24°C (75°F), yet May is significantly wetter, with precipitation soaring to 412 mm (16.2 in) over 30 days compared to April's 118 mm (4.6 in) across 24 days. Humidity levels are also slightly higher in May at 69%, compared to April's 67%. For a detailed look at May weather, check out Atenas weather in May.
In comparing the weather of April and June, both months experience relatively warm temperatures, with April having a minimum of 18°C (64°F) and a maximum of 31°C (89°F), while June's temperatures range from a minimum of 19°C (66°F) to a maximum of 30°C (86°F). However, June is significantly wetter, receiving 397 mm (15.6 in) of precipitation over 30 days compared to April's 118 mm (4.6 in) across 24 days, resulting in a noticeable increase in humidity levels, from 67% in April to 84% in June. This increased humidity in June can lead to a more sultry feel, making the overall weather experience quite different between these two months. For a detailed look at June weather, you can check Atenas weather in June.
In April, the weather features a warm temperature range, with minimums averaging 18°C (64°F) and maximums reaching up to 31°C (89°F). The month sees about 118 mm (4.6 in) of rainfall over 24 days and maintains a relatively comfortable humidity level of 67%. In contrast, July experiences slightly higher minimum temperatures at 19°C (67°F) and an average that stays close at 24°C (75°F). However, the maximum temperature is lower, peaking at 29°C (85°F). Notably, July is significantly wetter, with 296 mm (11.7 in) of precipitation over 30 days and higher humidity at 85%. For more detailed information, you can check Atenas weather in July.
April and August exhibit distinct weather patterns. In April, temperatures range from a minimum of 18°C (64°F) to a maximum of 31°C (89°F), with an average temperature of 24°C (76°F). The month sees a significant amount of precipitation, totaling 118 mm (4.6 in) over 24 days, and a humidity level of 67%. In contrast, August experiences slightly higher minimum temperatures at 19°C (66°F) and slightly lower maximum temperatures of 30°C (85°F), with an average of 23°C (74°F). However, it is much wetter in August, with a substantial increase in rainfall to 393 mm (15.5 in) over 30 days and a higher humidity level of 82%. For more detailed information, you can check Atenas weather in August.
April and September present distinct weather patterns, showcasing the transition from the dry to the rainy season. In April, temperatures range from a mild 18°C (64°F) at night to a warm 31°C (89°F) during the day, with an average of 24°C (76°F). The month sees about 118 mm (4.6 in) of precipitation over 24 days, accompanied by a humidity level of 67%. In contrast, September experiences slightly cooler temperatures, with a minimum of 18°C (66°F) and a maximum of 29°C (85°F), averaging around 23°C (74°F). However, this month is characterized by significantly higher rainfall, totaling 461 mm (18.2 in) across 29 days, resulting in increased humidity at 81%. For a detailed look at weather specifics during this month, check out Atenas weather in September.
April and October present distinct weather patterns that reflect the transition between seasons. In April, temperatures range from a pleasant 18°C (64°F) at night to a warm 31°C (89°F) during the day, with average temperatures around 24°C (76°F). However, this month experiences considerable rainfall with 118 mm (4.6 in) over approximately 24 days, contributing to a humidity level of 67%.
In contrast, October sees slightly cooler average temperatures of 23°C (73°F) and maximum highs of 29°C (84°F), while maintaining the same minimum nighttime temperature of 18°C (66°F). This month is significantly wetter, with precipitation soaring to 639 mm (25.2 in) over around 30 days, resulting in increased humidity at 80%. For more detailed information about October weather, you can visit Atenas weather in October.
April and November exhibit notable differences in weather patterns. In April, temperatures are slightly higher, with an average of 24°C (76°F) and daily highs reaching up to 31°C (89°F). However, this month experiences a significant amount of rainfall, accumulating 118 mm (4.6 in) over 24 days, accompanied by a humidity level of 67%. In contrast, November sees a decrease in average temperatures, hovering around 23°C (74°F) with maximums of 29°C (85°F). Rainfall is substantial in November, totaling 251 mm (9.9 in) over 28 days, and humidity rises to 80%. For a detailed look at November's weather, check out Atenas weather in November.
April and December exhibit relatively mild temperatures, with both months featuring a minimum of around 18°C. However, April tends to be warmer overall, boasting an average temperature of 24°C and occasional highs reaching up to 31°C, compared to December's average of 23°C and a maximum of 30°C. In terms of precipitation, April is significantly wetter, experiencing 118 mm over 24 days, while December sees a more moderate 72 mm over 18 days. Humidity slightly increases in December to 72%, compared to April's 67%. For more detailed information about December weather, check Atenas weather in December.
April in Atenas presents a unique weather experience, with its warm temperatures and notable rainfall setting it apart from other months. As the dry season transitions, average highs reach a comfortable 31°C (89°F), while the increased humidity at 67% often brings about a refreshing feel in the air. This month typically witnesses around 24 days of rain, contributing significantly to the total precipitation of 118 mm (4.6 in), making it one of the wetter months of the year. This combination of warmth and rain enriches the lush landscapes that define Atenas, creating a vibrant environment perfect for outdoor exploration. For more insights into the yearly weather patterns, check out Atenas Climate.