Last updated: August 21, 2025
March in Heredia, Costa Rica brings pleasant temperatures with a maximum of 25°C (76°F) and an average around 18°C (64°F), while minimums can drop to 11°C (53°F). This month experiences a moderate rainfall totaling approximately 49 mm (1.9 in), spread over 14 days, contributing to a humidity level of 66%. The combination of gentle warmth and intermittent showers makes March a vibrant time to experience the lush landscapes and rich biodiversity that characterize this beautiful region.
March in Heredia, Costa Rica, brings a delightful warming trend as the region transitions from the cooler months of January and February. With minimum temperatures typically around 11°C (53°F), residents and visitors can enjoy mild mornings that give way to slightly warmer average temperatures of 18°C (64°F). The afternoons are pleasantly warm, reaching up to 25°C (76°F), making it an ideal time for outdoor activities. As the month progresses, the warmth begins to hint at the approaching wet season of April and May, yet the crispness of the earlier months lingers, ensuring a perfect balance of comfort and mildness throughout March.
In March, Heredia, Costa Rica experiences a modest amount of rainfall, recording 49 mm (1.9 in) over 14 days. This slight increase from February’s 43 mm serves as a gentle precursor to the more dramatic precipitation that begins in April and peaks in the following months. As the dry season gradually wanes, March offers a refreshing transition, hinting at the lush greenery that comes with the upcoming heavy showers of May, where averages soar to 425 mm (16.7 in). This pattern underscores the rhythm of the tropical climate, transitioning from the lighter rains of early year towards the vibrant, wet heart of the season.
In March, Heredia, Costa Rica experiences a slight dip in humidity, averaging 66%, compared to the steady 68% observed in both January and February. This minor decrease signals the transition into the wetter months, as humidity levels begin to rise again in April with 67%. The trend becomes more pronounced as the region approaches the rainy season, with humidity soaring to 84% by June and peaking at 85% in July. Overall, while March offers a brief respite from the higher humidity, it's an indication of the impending tropical climate that characterizes the region in the months to come.
In March, Heredia, Costa Rica, experiences an ultraviolet (UV) index of 15, categorizing it as extreme and maintaining a burn time of just 10 minutes. This month marks a peak in UV intensity, following an upward trend from January’s index of 12 and February’s 14. As the dry season progresses towards the year’s later months, the UV index climbs even higher, reaching 16 in April. With consistently high levels throughout the early months and a notable intensity in March, it's crucial for residents and visitors alike to protect themselves from the sun’s harsh rays. For more detailed insights and safety tips, visit Heredia UV Index.
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March brings a delightful peak of sunshine to Heredia, Costa Rica, with an impressive 329 hours of bright, golden rays. This marks a notable increase from the earlier months, making it one of the sunniest periods of the year. Following a consistent rise from January's 246 hours, March's abundant sunlight sets the stage for vibrant outdoor adventures and the flourishing of local flora. As the year progresses, the sunshine begins to taper slightly in April with 303 hours, yet the warmth carries through until May. Overall, March stands out as a beacon of brightness, inviting residents and visitors alike to bask in its glory before the rainy season approaches.
In Heredia, Costa Rica, the likelihood of sunny weather takes a noticeable dip as March approaches, with only a 40% chance of sun. This decline follows the slightly more promising weather of January and February, which boast 47% and 42% chances, respectively. As the region transitions into the rainy season, the likelihood of sunshine plummets in the following months, particularly in April and May, where it drops dramatically to 16% and 12%. This trend underscores the shift from the relatively dry early months of the year to the wetter, cloudier days ahead, making March a fleeting opportunity for sun-seekers before the lush green landscapes emerge.
In March, the days in Heredia, Costa Rica, begin to stretch, offering 12 hours of daylight—the longest stretch so far this year. This increase marks a shift from the consistent 11 hours observed in January and February, signaling the arrival of spring and longer afternoons perfect for exploration. Following March, daylight remains steady at 12 hours through much of the year, demonstrating a rhythm of light that complements the region's vibrant flora and fauna. As the months progress toward the rainy season, this extended daylight becomes a welcome opportunity for both residents and visitors to embrace the lush landscapes, making each moment of sunshine particularly precious.
In March, the winds in Heredia, Costa Rica, gently sway at an average speed of 2.3 m/s (5 mph), maintaining the calm rhythm established in the earlier months of the year. While January and February usher in slightly stronger breezes, the transition into April marks a noticeable dip, with speeds falling to 1.7 m/s (4 mph). This gradual decline continues through the mid-year months, reaching a low of 1.1 m/s (3 mph) by October. As the year winds down, however, a resurgence occurs, with November and December nudging back up to the 4-5 mph range. This cyclical pattern reflects the serene yet dynamic nature of Heredia's climate, offering a refreshing atmosphere that locals and visitors alike can appreciate.
Weather in Heredia varies notably across the year, with each month offering distinct climate conditions. This page compares March’s weather to other months in Heredia, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparison to January, March exhibits slightly higher average temperatures, with a minimum of 11°C (53°F), an average of 18°C (64°F), and a maximum of 25°C (76°F), compared to January's average of 17°C (63°F). While both months share similar minimum and maximum temperatures, March experiences less precipitation, totaling 49 mm (1.9 in) over 14 days, whereas January sees a higher precipitation level of 93 mm (3.7 in) across 11 days. Humidity levels are fairly close, with March at 66% and January at 68%. For more details on the weather in January, visit Heredia weather in January.
In comparing the weather of March and February, both months exhibit similar temperature ranges with minimal differences. March has a minimum temperature of 11°C (53°F), an average of 18°C (64°F), and a maximum of 25°C (76°F), while February also records a minimum of 11°C (52°F), an average of 17°C (64°F), and a maximum of 25°C (78°F). Precipitation levels are slightly higher in March at 49 mm (1.9 in) over 14 days, compared to February's 43 mm (1.7 in) over 12 days. Humidity remains comparable, with March reporting 66% and February at 68%. For more detailed insights on February weather, you can visit Heredia weather in February.
March typically offers mild weather with an average temperature of 18°C (64°F) and maximums reaching 25°C (76°F). During this month, the region experiences 49 mm (1.9 in) of precipitation over approximately 14 days, accompanied by a humidity level of 66%. In contrast, April sees a slight increase in temperature, with an average of 19°C (66°F) and highs of 26°C (80°F). However, this month is notably wetter, with a total precipitation of 113 mm (4.4 in) spread across 23 days and a humidity level that rises slightly to 67%. For more detailed insights on the weather during this time, check out Heredia weather in April.
In comparing the weather between March and May, we see notable differences. March tends to be milder, with temperatures ranging from a minimum of 11°C (53°F) to a maximum of 25°C (76°F) and an average of 18°C (64°F). The month experiences relatively light precipitation, totaling 49 mm (1.9 in) over about 14 days, and a humidity level of 66%. In contrast, May is warmer, with temperatures ranging from 14°C (58°F) to a maximum of 26°C (79°F), featuring a slightly higher average of 19°C (67°F). However, May is significantly wetter, receiving 425 mm (16.7 in) of rainfall over 29 days, leading to a higher humidity of 69%. For more specifics on the weather during this month, you can follow this link: Heredia weather in May.
March and June exhibit distinct weather patterns, reflecting the transition from the dry to the wet season. In March, temperatures range from a minimum of 11°C (53°F) to a maximum of 25°C (76°F), with an average of 18°C (64°F) and relatively low precipitation of 49 mm (1.9 in) over 14 days. The humidity level is moderate at 66%. In contrast, June experiences warmer temperatures, with a minimum of 15°C (59°F) and a maximum of 26°C (78°F), and an average of 19°C (67°F). However, it also sees significantly higher precipitation, totaling 341 mm (13.4 in) over 28 days, accompanied by increased humidity at 84%. For more detailed information, you can check Heredia weather in June.
March and July in Heredia showcase contrasting weather patterns that reflect the transition from early spring to the peak of the rainy season. In March, daytime temperatures range from a pleasant 18°C (64°F) on average, with maximums reaching up to 25°C (76°F), and precipitation totals around 49 mm (1.9 in) over approximately 14 days. This month experiences relatively lower humidity at 66%. Conversely, July brings warmer minimum temperatures of 15°C (59°F) and similar maximums of 25°C (77°F), but it is notably wetter, with a staggering 266 mm (10.5 in) of rain over 28 days and considerably higher humidity at 85%. For a detailed look at weather conditions during this summer month, visit Heredia weather in July.
In March, temperatures in the region range from a minimum of 11°C (53°F) to a maximum of 25°C (76°F), with an average of 18°C (64°F). The month sees about 49 mm (1.9 in) of precipitation over approximately 14 days, resulting in a moderate humidity level of 66%. In contrast, August tends to be slightly warmer, with minimum temperatures around 15°C (59°F) and a maximum of 26°C (79°F), averaging 19°C (66°F). However, this month experiences significantly higher rainfall, accumulating 304 mm (12.0 in) across 28 days, along with increased humidity at 82%. Such differences highlight how March offers milder and drier conditions compared to the wetter and more humid atmosphere of August. For more detailed information, visit Heredia weather in August.
March and September exhibit notable differences in weather patterns. In March, temperatures range from a minimum of 11°C (53°F) to a maximum of 25°C (76°F), with an average of 18°C (64°F). The month is relatively dry, receiving about 49 mm (1.9 in) of precipitation over 14 days, with humidity levels around 66%. Conversely, September presents a different picture, with temperatures starting at a minimum of 14°C (58°F) and peaking at 25°C (78°F), averaging 19°C (66°F). However, this month is significantly wetter, experiencing approximately 379 mm (14.9 in) of rainfall over 29 days, resulting in higher humidity levels at 81%. For a detailed look at Heredia's weather during this month, check Heredia weather in September.
March and October present contrasting weather patterns, highlighting the transition between seasons. In March, temperatures range from a minimum of 11°C (53°F) to a maximum of 25°C (76°F), with average conditions around 18°C (64°F). The month experiences moderate precipitation of 49 mm (1.9 in) over 14 days and a humidity level of 66%. In contrast, October sees slightly higher temperatures, with a minimum of 14°C (58°F) and a maximum of 25°C (78°F), but it is characterized by significantly increased rainfall, totaling 517 mm (20.4 in) over 29 days, along with higher humidity at 80%. For more details on the weather conditions during this month, check out Heredia weather in October.
In comparing the weather of March and November, we notice some intriguing differences. March boasts a milder temperature range, with temperatures averaging around 18°C (64°F) and a maximum of 25°C (76°F), while November has a slightly higher minimum temperature of 14°C (57°F) and maintains a similar average of 18°C (65°F). However, November brings significantly more rain, with 260 mm (10.3 in) of precipitation spread over 24 days, compared to March's 49 mm (1.9 in) over just 14 days. Furthermore, November's humidity is higher at 80%, compared to March's 66%, contributing to a more humid atmosphere during the later month. For a detailed outlook, you can check Heredia weather in November.
In March, the weather typically features a mild temperature range, with minimums around 11°C (53°F) and maximums reaching 25°C (76°F), while the average temperature hovers at 18°C (64°F). The month sees an average of 49 mm (1.9 in) of precipitation over 14 days, with humidity levels at 66%. In contrast, December offers slightly warmer conditions, with minimum temperatures around 12°C (55°F) and maximums of 24°C (75°F), maintaining the same average of 18°C (64°F). However, December is notably wetter, accumulating 156 mm (6.1 in) of rain over 16 days and displaying a higher humidity level of 72%. For more detailed insights, check Heredia weather in December.
March in Heredia brings a delightful transition in weather, characterized by temperate days and cooler nights. While the average temperatures hover around a comfortable 18°C (64°F), this month experiences a notable increase in precipitation, with rainfall spreading across approximately half the month. Compared to the drier months that follow, March offers a lush vibrancy as nature awakens, surrounded by a refreshing humidity of 66%. This blend of warmth and moisture makes March an enchanting time to embrace the rich greenery of Heredia. For a deeper understanding of what to expect year-round, check out the detailed Heredia Climate.