Last updated: August 21, 2025
In San Ramon, Costa Rica, May welcomes a tropical climate characterized by temperatures ranging from a comfortable 19°C (67°F) to a pleasant 30°C (86°F), with an average of 24°C (75°F). This month is notably marked by extensive rainfall, with 412 mm (16.2 in) of precipitation spread across 30 days, creating a lush and vibrant landscape. Humidity levels hover around 69%, contributing to the refreshing, moist atmosphere typical of the region. Whether you're exploring the rich biodiversity or soaking in the scenic views, May offers a unique experience in this beautiful Central American destination.
In May, San Ramon, Costa Rica, experiences a subtle shift toward the warmer season, with temperatures mild yet inviting. The minimum temperature nudges up to 19°C (67°F), while the average hovers around a comfortable 24°C (75°F). Daytime highs reach 30°C (86°F), making it one of the warmer months. This slight increase is in keeping with the progression into late spring, as July and August follow suit with consistent temperatures, although May distinguishes itself with a balance that invites both exploration and relaxation. As the region transitions seamlessly into the lush, green landscape of the rainy season, May stands out as a delightful month for outdoor activities under the warm sun!
May in San Ramon, Costa Rica, is characterized by a dramatic shift in precipitation, with an impressive 412 mm (16.2 in) of rain falling throughout the month. This significant amount, which is the highest recorded for the year, underscores the start of the rainy season. With rain almost every day—30 days in total—May sets the stage for the lush, vibrant landscapes that Costa Rica is famous for. Following April's already substantial 118 mm (4.6 in), the leap in rainfall not only highlights May's role as a transition month but also reflects a consistent upward trend in precipitation as the country moves into its wetter months. This relentless downpour fosters the flourishing biodiversity that thrives in the region, making May a truly transformative time in San Ramon’s climate cycle.
As May rolls into San Ramon, Costa Rica, humidity levels begin to rise, reaching 69%—a slight increase from the previous months. This uptick marks the beginning of the wet season, where the lush landscapes thrive; transitioning from a consistent range of 66% to 68% in the earlier months, May’s humidity hints at the impending tropical rains. Following May, the humidity surges significantly in June and July, reaching heights of 84% and 85%, respectively, painting a picture of the profound moisture that envelops the region during these lush months. The gradual climb in humidity not only signals a change in weather patterns but also encourages vibrant biodiversity, making San Ramon a captivating destination for nature enthusiasts.
In May, San Ramon, Costa Rica, experiences a UV Index of 14, placing it firmly within the extreme exposure category. With a consistent burn time of just 10 minutes, precautions are essential for outdoor activities. Notably, May’s UV levels reflect a slight decrease from the peak witnessed in March and April; however, they remain elevated as the region transitions into the rainy season. This trend of high UV exposure continues into June and July, reminding residents and visitors alike of the importance of sun safety throughout the spring months. For more detailed information, visit San Ramon UV Index.
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In San Ramon, Costa Rica, the month of May experiences a notable dip in sunshine, with 235 hours basking in bright rays. This month comes right after the peak of sunshine in March, which boasts an impressive 329 hours. Following March, April still delivers a robust 300 hours, creating a radiant lead-up to May. As the rainy season approaches, the trend continues downward into June, with only 226 hours of sunshine. Despite this decline, the overall yearly sunshine pattern reveals that San Ramon enjoys a healthy spread of sunlight, with January starting strong at 249 hours and wrapping up the year in December with 291 hours. Such a seasonal dance of light makes San Ramon a captivating place, balancing the warmth of sunshine with the refreshing rainfall that nurtures its lush landscapes.
As May approaches in San Ramon, Costa Rica, the likelihood of sunny weather significantly diminishes, with a mere 17% chance of sunshine. This trend starkly contrasts with the earlier months, where sunshine prevails—57% in January and 55% in February—setting a high bar for the dry season. By April, the sun begins to retreat more dramatically, dropping to 24%, and continues to decline through May into the rainy months of June and July, which see chances of sun at 15% and 19%, respectively. This pattern underscores the transition into the region's wetter season, making May a time where sunshine becomes increasingly elusive.
In San Ramon, Costa Rica, daylight duration presents a captivating rhythm throughout the year. Beginning with a steady 11 hours in January and February, the sun gradually stretches its golden rays in March, reaching 12 hours. This delightful trend continues through April and May, maintaining the same generous 12 hours of daylight that lasts well into the lush months of June, July, and August. As the year progresses into September, this consistent 12-hour daylight persists, creating a reliable pattern for residents and visitors alike. However, as summer fades, daylight subtly retracts in October, November, and December, settling back to 11 hours—a gentle reminder of nature's cyclical beauty.
In May, San Ramon experiences a gentle breeze with an average wind speed of 1.3 m/s (3 mph), which is a slight decrease from the preceding months. As the dry season transitions towards the wet season, wind speeds show a gradual decline from the earlier months, peaking at 2.1 m/s in March but slowing down by May. This trend continues into the following months, suggesting a calm atmosphere ideal for enjoying San Ramon's lush landscapes. The mild winds create a serene backdrop, perfect for outdoor activities, while the region's vibrant greenery starts to flourish with the onset of rain. Overall, May's winds contribute to a tranquil, refreshing environment that captures the essence of Costa Rica's natural beauty.
Weather in San Ramon varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in San Ramon, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between May and January, May typically experiences warmer temperatures, with an average of 24°C (75°F) and maximums reaching up to 30°C (86°F). In contrast, January has a slightly lower average temperature of 23°C (74°F) and can peak at 31°C (87°F). While both months have similar humidity levels, May sees significantly more precipitation, averaging 412 mm (16.2 in) over 30 days, compared to January's mere 28 mm (1.1 in) over just 7 days. For more specific insights about January, you can check San Ramon weather in January.
In comparison, May experiences a warmer and wetter climate than February. While both months have similar average temperatures, with May averaging 24°C (75°F) and February 24°C (76°F), May sees a higher temperature range, with a minimum of 19°C (67°F) and a maximum of 30°C (86°F) compared to February's minimum of 16°C (62°F) and maximum of 31°C (88°F). The notable difference lies in precipitation and humidity; May receives a substantial 412 mm (16.2 in) of rain over 30 days, resulting in a humidity level of 69%, while February is much drier with only 13 mm (0.5 in) of rainfall over just 3 days and a humidity level of 68%. For more detailed weather insights, you can check San Ramon weather in February.
Comparing the weather in May and March reveals some interesting contrasts. While March enjoys slightly warmer temperatures on average, with a minimum of 18°C (64°F) and a maximum of 32°C (89°F), May sees a bit more consistency with minimum temperatures of 19°C (67°F) and a high of 30°C (86°F). However, March is considerably drier, experiencing just 18 mm (0.7 in) of precipitation over 4 days, compared to May's heavier rainfall of 412 mm (16.2 in) spread over 30 days. Both months maintain similar humidity levels, with March at 66% and May at 69%, making for a humid climate overall. For more details on March’s weather, visit San Ramon weather in March.
In comparing the weather of May and April, we observe some notable differences and similarities. May tends to be slightly warmer, with average temperatures hovering around 24°C (75°F), similar to April's average of 24°C (76°F). However, May experiences a higher maximum temperature of 30°C (86°F) compared to April's peak of 31°C (89°F).
One significant contrast is the precipitation: May sees a substantial increase with 412 mm (16.2 in) over 30 days, while April has a more moderate 118 mm (4.6 in) across 24 days, leading to a wetter atmosphere in May. Despite this, humidity levels remain relatively similar, with May at 69% and April slightly lower at 67%. For more details on April's weather, you can visit San Ramon weather in April.
In comparing the weather patterns of May and June, both months experience similar temperature ranges, with minimums around 19°C (66-67°F), averages of 24°C (75°F), and maximums peaking at 30°C (86°F). However, June tends to have slightly less precipitation, receiving 397 mm (15.6 in) compared to May's 412 mm (16.2 in), even though both months see rain throughout all 30 days. Notably, June's humidity is higher at 84%, compared to May's 69%, contributing to a more muggy atmosphere. For detailed insights on June weather specifics, you can visit San Ramon weather in June.
In comparing the weather between May and July, both months experience similar minimum and average temperatures, with May slightly warmer at a maximum of 30°C (86°F) compared to July's maximum of 29°C (85°F). However, May sees significantly higher precipitation, with 412 mm (16.2 in) of rainfall compared to July's 296 mm (11.7 in). Additionally, July has a higher humidity level at 85%, making it feel more humid than May's 69%. For more detailed information on July's climate, refer to San Ramon weather in July.
May and August present similar temperature ranges, with both months featuring a minimum temperature of around 19°C (67°F) and a maximum reaching 30°C (86°F). However, May tends to be warmer on average at 24°C (75°F), compared to August's average of 23°C (74°F). Precipitation levels are slightly higher in May, with 412 mm (16.2 in) recorded against August's 393 mm (15.5 in), although both months experience rainfall over 30 days. Notably, August is more humid, with levels peaking at 82%, while May has a somewhat lower humidity of 69%. For a detailed look at August weather, you can refer to San Ramon weather in August.
In comparing the weather of May and September, May typically experiences slightly warmer temperatures, with an average of 24°C (75°F) and maximums reaching 30°C (86°F). In contrast, September's temperatures are a bit cooler, averaging 23°C (74°F) with a maximum of 29°C (85°F). Both months are quite wet, but September sees a higher precipitation total of 461 mm (18.2 in) compared to May’s 412 mm (16.2 in), while also featuring slightly increased humidity levels at 81% compared to May's 69%. For more detailed information, you can check out San Ramon weather in September.
May and October showcase similar temperature ranges, with May averaging 24°C (75°F) and October slightly cooler at 23°C (73°F). Both months experience warm temperatures, with May's maximum reaching 30°C (86°F) compared to October's 29°C (84°F). However, October is notably wetter, with precipitation levels peaking at 639 mm (25.2 in) compared to May's 412 mm (16.2 in). Additionally, October boasts higher humidity at 80%, which creates a more muggy atmosphere than May's 69%. For those curious about specific weather details for October, you can check San Ramon weather in October.
May and November present a contrasting yet mild weather scenario. In May, temperatures range from a minimum of 19°C (67°F) to a maximum of 30°C (86°F), with an average of 24°C (75°F), along with significant rainfall totaling 412 mm (16.2 in) over 30 days, leading to a humidity level of 69%. In comparison, November has a slightly cooler temperature range, starting at 18°C (64°F) and peaking at 29°C (85°F), with an average of 23°C (74°F). Rainfall in November is less intense, measuring 251 mm (9.9 in) across 28 days, which results in higher humidity at 80%. For more specific details, you can visit San Ramon weather in November.
In May, the weather is warm and humid, with temperatures ranging from a minimum of 19°C (67°F) to a maximum of 30°C (86°F) and an average of 24°C (75°F). The month experiences significant rainfall, with a total of 412 mm (16.2 in) spread over 30 days, resulting in a humidity level of 69%. In contrast, December offers slightly cooler conditions, with temperatures ranging from a minimum of 18°C (65°F) to a maximum of 30°C (86°F) and an average of 23°C (74°F). The precipitation in December is much lower, totaling 72 mm (2.8 in) across 18 days, and the humidity rises to 72%. For more detailed information about December weather, visit San Ramon weather in December.
As May unfolds in San Ramon, expect a delightful blend of warmth and moisture that sets it apart from other months. With temperatures reaching a pleasant high of 30°C (86°F) and an average of 24°C (75°F), it's a great time for outdoor activities, despite the humidity lingering at 69%. This month is characterized by frequent rain, leading to a total precipitation of 412 mm (16.2 in) over the course of 30 days, making things lush and vibrant. Visitors and residents alike will experience a distinctive tropical atmosphere, perfect for embracing the natural beauty of the region. For a detailed insight into the weather patterns, check out San Ramon Climate.