Last updated: August 21, 2025
May in Heredia, Costa Rica unveils a blend of mild temperatures and abundant rainfall, making it a unique time of year. The maximum temperature hovers around 26°C (79°F), complemented by an average of 19°C (67°F) and a refreshing minimum of 14°C (58°F). With an impressive 425 mm (16.7 in) of rainfall spread over 29 days, visitors can expect a lush, green landscape. The humidity, averaging 69%, enhances the tropical feel, creating an environment rich with vibrant flora. Whether you’re exploring the scenic surroundings or enjoying local culture, May presents a captivating experience in Heredia.
In May, Heredia, Costa Rica, experiences a gentle transition in temperatures, with daily lows averaging around 14°C (58°F) and comfortable highs reaching 26°C (79°F). The average temperature settles at a pleasant 19°C (67°F), continuing the trend of mild weather established in the preceding months. This month sees a slight increase in nighttime warmth compared to April, while daytime highs remain consistent. As the region edges closer to the rainy season, the atmosphere begins to buzz with energy, merging inviting warmth with the lush greenery that characterizes this vibrant locale. Overall, May in Heredia offers a delightful mix of temperate days and cooler nights, perfect for exploration and enjoying the natural beauty.
In May, Heredia, Costa Rica, experiences a dramatic surge in precipitation, with 425 mm (16.7 in) of rain falling over an astonishing 29 days. This marks a significant increase from the previous months, highlighting May as the wettest month of the year. As the region transitions fully into the rainy season, the nearly daily showers contribute to its lush, tropical landscape. Following April's substantial 113 mm (4.4 in), May's rainfall underscores a clear upward trend in precipitation leading into the heart of Costa Rica's tropical climate, setting the stage for the heavier rains of June and October. The consistent rainfall not only nurtures the vibrant flora but also profoundly shapes the local ecosystem, emphasizing the beauty and intensity of the green season.
In May, Heredia, Costa Rica, welcomes a slight uptick in humidity, reaching 69%, which marks a transition into the more humid months ahead. This increase follows a relatively consistent trend from earlier months, where humidity hovered around 66% to 68% from January to April. As the rainy season approaches in June, humidity surges to 84% and continues to remain high through the summer. This pattern highlights Heredia’s lush environment, nourished by moisture-laden air, making May a bridge between the dryer early months and the verdant, wet season that follows.
In May, Heredia, Costa Rica continues to experience an extreme UV Index of 14, consistent with the preceding months of March and April, which saw peaks of 15 and 16, respectively. This trend underscores the region's robust sunlight during the early months of the year, signaling an average burn time of just 10 minutes for unprotected skin. As the season progresses into June and July, the UV Index stabilizes at 14, illustrating a persistent and high level of sun exposure that residents and visitors should be keenly aware of. Whether you're exploring the lush natural landscapes or enjoying the vibrant local culture, it's crucial to prioritize sun protection. For more details, check the Heredia UV Index.
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May in Heredia, Costa Rica, greets residents and visitors with 248 hours of sunshine, marking a delightful transition from the vibrant brightness of spring. As the year unfolds, the trend reveals a strong peak during the early months, with March shining the brightest at 329 hours. April and February also boast impressive totals, demonstrating a consistent hold on sunny days. However, as the region shifts into the June to August period, sunshine hours experience a gradual decline, averaging around 244 to 236 hours. This rhythmic pattern in Heredia's sunlight suggests a cozy balance between vibrant sunshine in the early months and the gentle embrace of cloudier skies as the year progresses, creating a tapestry of weather that reflects the charm of Costa Rica's tropical climate.
In Heredia, Costa Rica, the likelihood of sunny weather takes a noticeable dip as spring transitions into early summer. While January starts the year with a respectable 47% chance of sunshine, this figure steadily declines, dropping to just 12% by May. This trend continues into June, where the chances barely budge to 13%. The period from April to August often brings the least favorable weather, characterized by increased cloudiness and rainfall, making sunny days a rare gem during these months. As the year progresses towards the latter months, the chances of clear skies begin to improve again, with November seeing a more optimistic 22% likelihood. Overall, if you're dreaming of sunny May days in Heredia, you might want to keep an umbrella handy instead!
In Heredia, Costa Rica, the daylight duration presents a remarkable balance throughout the year, with a consistent pattern emerging in the warmer months. From January to February, daylight spans about 11 hours, gradually increasing to 12 hours by March, which marks the transition into the dry season. This 12-hour daylight duration continues unabated from April through August, allowing residents and visitors alike to enjoy ample sunlight for outdoor activities. As the year progresses into September, the daylight remains at a steady 12 hours before beginning a gentle decline back to 11 hours in the latter months of the year. This rhythm reflects the region's tropical climate and offers a delightful moderation, ensuring that Heredia basks in generous sunlight for much of the year.
In Heredia, Costa Rica, the breezy charm of May is marked by an average wind speed of 1.6 m/s (4 mph), continuing the gentle trend that sets in after the lively winds of earlier months. Following April’s slight decline, where winds measured 1.7 m/s, May experiences a further softening, characteristic of the onset of the rainy season. This dip in wind speed is reflective of a seasonal shift, as the region transitions into its warmer and more humid months, culminating in a refreshing yet calm atmosphere ideal for enjoying the lush green landscapes. As the year progresses into June, winds are expected to slow even more, hinting at a peaceful and serene ambiance during this beautiful time of year.
Weather in Heredia varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Heredia, focusing on differences in temperature, rainfall, humidity, and UV levels.
May and January present distinct weather patterns. In May, temperatures range from a minimum of 14°C (58°F) to a maximum of 26°C (79°F), with an average of 19°C (67°F). This month experiences significant rainfall, with 425 mm (16.7 in) of precipitation over 29 days, leading to a humidity level of 69%. Conversely, January features milder temperatures, with a minimum of 11°C (53°F), an average of 17°C (63°F), and a maximum of 24°C (76°F). Precipitation in January is considerably lower at 93 mm (3.7 in), occurring over just 11 days, and humidity remains similar at 68%. For more specific details, check out Heredia weather in January.
May and February present distinct weather patterns, highlighting the transition from dry to wet seasons in many regions. In May, temperatures range from a minimum of 14°C (58°F) to a maximum of 26°C (79°F), with an average of 19°C (67°F). This month experiences significant rainfall, totaling 425 mm (16.7 in) over 29 days, resulting in a relatively high humidity of 69%. In contrast, February boasts slightly cooler temperatures, with a minimum of 11°C (52°F) and a maximum of 25°C (78°F), averaging 17°C (64°F). Precipitation is considerably lower at 43 mm (1.7 in) over just 12 days, with humidity remaining similar at 68%. For more detailed insights, you can check Heredia weather in February.
In comparing the weather between May and March, we can see notable differences in temperature and precipitation. May tends to be warmer overall, with average temperatures ranging from a minimum of 14°C (58°F) to a maximum of 26°C (79°F), while March's temperatures are slightly cooler, ranging from a minimum of 11°C (53°F) to a maximum of 25°C (76°F). Additionally, May experiences significantly more rainfall, with 425 mm (16.7 in) over 29 days, in stark contrast to March’s 49 mm (1.9 in) over 14 days. Despite the higher precipitation in May, the humidity levels remain similar, at 69% for May and 66% for March. For a detailed look at March weather in Heredia, you can refer to Heredia weather in March.
May and April display similar average temperatures, with May having slightly higher minimum and maximum temperatures. In May, temperatures range from a minimum of 14°C (58°F) to a maximum of 26°C (79°F), compared to April's range of 13°C (56°F) to 26°C (80°F). However, May is significantly wetter, experiencing 425 mm (16.7 in) of precipitation over 29 days, in contrast to April's much lighter 113 mm (4.4 in) over 23 days. Humidity levels are also slightly higher in May at 69%, compared to April's 67%. For more details, you can check Heredia weather in April.
In comparing the weather of May and June, we find that both months exhibit similar average temperatures, hovering around 19°C (67°F), and maximum temperatures reaching up to 26°C (79°F) for May and 26°C (78°F) for June. However, June experiences slightly higher minimum temperatures with a low of 15°C (59°F) compared to May's 14°C (58°F). Precipitation levels decline from 425 mm (16.7 in) in May to 341 mm (13.4 in) in June, indicating a decrease in rainfall. Interestingly, despite this reduction in precipitation, June sees a slight uptick in humidity, rising to 84% compared to May's 69%. For more detailed information about the weather in June, you can visit Heredia weather in June.
May and July exhibit some similarities and differences in weather patterns. Both months have average temperatures around 19°C (66°F), but May tends to be slightly warmer with maximum temperatures reaching up to 26°C (79°F), while July peaks at 25°C (77°F). Precipitation is significantly higher in May, with a total of 425 mm (16.7 in) over 29 days compared to July's 266 mm (10.5 in) spread over 28 days. Additionally, July experiences a higher humidity at 85%, compared to May's 69%, making it feel more muggy. For a closer look at July's weather specifics, you can visit Heredia weather in July.
May and August share similar temperature ranges, with both months featuring minimums around 14-15°C (58-59°F), average temperatures around 19°C (66-67°F), and maximums reaching up to 26°C (79°F). However, May sees significantly higher precipitation levels, recording 425 mm (16.7 in) over 29 days, compared to August's 304 mm (12.0 in) over 28 days. Humidity also differs slightly, with August being notably more humid at 82%, while May's humidity sits at 69%. For a closer look at the weather specifics for August, check out Heredia weather in August.
When comparing the weather in May and September, both months exhibit similar minimum temperatures around 14°C (58°F) and average temperatures hovering around 19°C (67°F), making them relatively comfortable. However, May tends to be slightly warmer overall, with maximum temperatures reaching up to 26°C (79°F) compared to September's 25°C (78°F). In terms of precipitation, May experiences more rain with 425 mm (16.7 in) over 29 days, while September sees 379 mm (14.9 in) of rainfall, also over 29 days. Additionally, September has a higher humidity level at 81%, compared to May's 69%. For more detailed insights into September's climate, you can refer to Heredia weather in September.
In May, the weather features mild temperatures with a minimum of 14°C (58°F), averaging 19°C (67°F), and peaking at 26°C (79°F). This month sees significant rainfall, with a total precipitation of 425 mm (16.7 in) over 29 days, coupled with a humidity level of 69%.
In contrast, October experiences slightly cooler maximum temperatures, reaching 25°C (78°F) while maintaining the same minimum and average temperatures as May. Rainfall is even more pronounced, with 517 mm (20.4 in) of precipitation also spread across 29 days, leading to a higher humidity level of 80%. This increased moisture in October can create a more sultry atmosphere. For more insights, check out Heredia weather in October.
May and November both exhibit mild temperatures, but with noteworthy differences in precipitation and humidity. In May, temperatures range from a minimum of 14°C (58°F) to a maximum of 26°C (79°F), accompanied by significant rainfall of 425 mm (16.7 in) over 29 days, resulting in a humidity level of 69%. In contrast, November sees slightly cooler average temperatures, with a minimum of 14°C (57°F) and a maximum of 24°C (75°F). The month experiences less rainfall, totaling 260 mm (10.3 in) over 24 days, but higher humidity at 80%. For more detailed insights, you can check Heredia weather in November.
May and December both offer mild temperatures, with May generally warmer, showcasing a minimum of 14°C (58°F) and an average of 19°C (67°F), compared to December's minimum of 12°C (55°F) and average of 18°C (64°F). However, May is significantly wetter, with 425 mm (16.7 in) of precipitation spread over 29 days, while December sees a much lighter rainfall of 156 mm (6.1 in) across 16 days. Humidity levels are relatively comparable, with December slightly higher at 72% versus May's 69%. For a closer look at what to expect in December, check out Heredia weather in December.
May in Heredia ushers in a vibrant transition to the rainy season, contrasting with the drier months that precede it. The average temperatures hover comfortably around 19°C (67°F), with a maximum reaching 26°C (79°F). This month experiences significant precipitation, with rain gracing the landscape on nearly 29 days, contributing to the lush greenery that defines the region. The humidity level of 69% further enhances the tropical feel, setting May apart from the more arid spells of earlier months. If you're curious about the broader climate patterns in Heredia, check out Heredia Climate for more insights.