May Weather in Nicoya, Costa Rica

Last updated: August 21, 2025

Experience the vibrant May weather of Nicoya, Costa Rica, where temperatures reach a sizzling maximum of 38°C (101°F), with an appealing average of 28°C (82°F) and a comfortable minimum of 23°C (73°F). This month typically brings 286 mm (11.2 in) of rainfall over 22 days, adding a refreshing twist to the warm climate. With a humidity level of 63%, the atmosphere feels lush and inviting, offering an ideal backdrop for outdoor adventures and exploration in this picturesque coastal region. Dive into the beauty of Nicoya this May, where every drop of rain nourishes the vibrant landscape.

May Temperature in Nicoya

In May, Nicoya, Costa Rica, experiences warm and delightful temperatures as the dry season begins to transition into the rainy season. With minimums around 23°C (73°F) and maximums hitting 38°C (101°F), it offers a comfortably warm average of 28°C (82°F). This slight increase from April's temperatures highlights a trend of gradually warming days, making it a perfect time for outdoor exploration amidst lush, vibrant landscapes. As the sun shines brightly, visitors can enjoy the balance of warmth and breezy evenings, creating an inviting atmosphere just before the summer rains arrive.

May Weather in Nicoya: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Nicoya, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nicoya, May typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec818283848280807979787980
Data source: Temperature data for Nicoya generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Nicoya

May marks a dramatic shift in Nicoya, Costa Rica, as the region transitions into its lush rainy season. With an impressive 286 mm (11.2 in) of rainfall over 22 days, May is not only the wettest month so far but also sets the tone for the deluge that follows. As the dry spell of earlier months gives way to near-daily showers, the landscape bursts into life, transforming into a vibrant green paradise. This significant precipitation is a precursor to June's peak rainfall of 359 mm (14.1 in), but May stands out for its intensity, highlighting the unmistakable pattern of increased rainfall that characterizes the region as it heads deeper into its rainy season.

May Precipitation Trends in Nicoya

The chart displays monthly precipitation patterns in Nicoya, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Nicoya, May typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec12245228635921529035340713031
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Nicoya

In May, Nicoya, Costa Rica experiences a consistent humidity level of 63%, mirroring the dry atmosphere of the preceding months like April and March. This stable humidity hints at a transitional phase as the region shifts towards the wetter months of June and July, where humidity levels surge dramatically to 74% and 85%, respectively. While May maintains a relatively comfortable moisture level, the approaching rainy season signals a notable departure from the more arid conditions seen earlier in the year. As summer gives way to fall, the trend indicates an inevitable increase in humidity, making it essential for visitors to prepare for the lush, tropical embrace of the Nicaraguan landscape ahead.

May Average Humidity in Nicoya

This chart illustrates the average monthly humidity levels in Nicoya, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Nicoya is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec66%64%63%63%63%74%85%82%80%79%79%70%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Nicoya

As we step into May in Nicoya, Costa Rica, the UV Index remains at a striking 14, categorizing it as extreme and indicating a consistent burn time of just 10 minutes. This pattern of high UV levels has been prevalent since January, with no drop in intensity through the preceding months. The steady UV Index of 14 in both May and across the following months of June and July highlights a clear trend of intense sun exposure during this period. Travelers and residents alike should take precautionary measures during this time, such as applying sunscreen and wearing protective clothing. For more detailed information about the UV Index throughout the year, visit Nicoya UV Index.

Maximum UV Index Levels in Nicoya for May

The chart shows the monthly maximum UV Index (UVI) for Nicoya in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In May, the maximum UV index in Nicoya typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec111314141414141313131110
Data source: Nicoya May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

May Sunshine in Nicoya

In Nicoya, Costa Rica, May brings a delightful 278 hours of sunshine, contributing to a vibrant and sunny atmosphere. Following the peak brightness of March with 334 hours, May sits comfortably above the initial months of the year, maintaining a solid average. As the dry season transitions into the slightly rainier months, the sunshine remains fairly consistent, with only a slight dip compared to previous months. This trend of abundant sunlight continues through June and into July, showcasing Nicoya's reputation as a sun-soaked paradise. With the lush landscapes and warm temperatures, May is the perfect time to enjoy the idyllic beauty of the region while soaking up the rays.

Monthly Sunshine Duration in Nicoya: May Highlighted

The May sunshine duration represents the total number of hours Nicoya experiences direct sunlight during the month of May, excluding cloudy or obstructed periods. This chart compares the sunshine duration of May with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec261h300h334h324h278h282h312h278h268h245h296h322h
Data source: Nicoya May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Nicoya During May

In Nicoya, Costa Rica, May experiences a notable decline in sunny weather, with only a 26% chance of sunshine. This trend marks a stark contrast to the preceding months, particularly January and February, which boast sunny probabilities of 60% and 67%, respectively. As the dry season fades into May, the region prepares for the onset of the rainy months, leading to a significant drop in clear skies. Following May, the likelihood of sun continues to diminish, peaking at just 20% in June. Therefore, if you're planning to visit Nicoya during this time, be prepared for the possibility of more overcast days than sun-soaked ones.

Percentage of Sunny Days in May in Nicoya

The chart illustrates the percentage of sunny days in Nicoya throughout the year, with May highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Nicoya experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec60%67%58%30%26%20%24%7%13%19%41%72%
Data source: Nicoya May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Nicoya in May

In Nicoya, Costa Rica, the delightful daylight duration exhibits a captivating rhythm throughout the year. From January to February, the sun generously graces the region with 11 hours of daylight, setting a calm and steady tone. As spring awakens in March and April, daylight stretches to an inviting 12 hours, welcoming longer afternoons ideal for exploration and relaxation. This trend of ample daylight continues through May, June, and July, creating a lush backdrop for outdoor adventures. Interestingly, the sun's generosity persists into August and September, maintaining that satisfying 12-hour span. However, as the year transitions into the latter months, daylight begins to wane, returning to 11 hours in October, November, and December. Overall, this subtle dance of daylight not only highlights the region’s tropical allure but also offers residents and visitors alike a consistent rhythm to savor the beauty of nature year-round.

Average Daylight Hours in Nicoya for May

The chart illustrates the variation in daylight duration in Nicoya throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 35m11h 47m12h 3m12h 20m12h 35m12h 42m12h 38m12h 25m12h 9m11h 52m11h 38m11h 31m
Data source: Nicoya daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Nicoya

In Nicoya, Costa Rica, May ushers in a gentle breeze with an average wind speed dipping to 2.2 m/s (5 mph). This marks a continuation of a downward trend in wind speeds that began in April, declining from a more brisk 4.0 m/s (9 mph) in March. As the dry season transitions into the wetter months, the winds calm significantly, reaching their lowest point in June at 1.5 m/s (3 mph). However, the lighter winds in May still offer a pleasant atmosphere for beachgoers and nature enthusiasts, creating a serene backdrop to the stunning landscapes of the region. Notably, November heralds a slight uptick in wind speeds, hinting at the shifting dynamics that characterize the region's seasonal weather patterns.

Average May Wind Speed in Nicoya

The chart displays monthly wind speed patterns in Nicoya, with values for each month shown alongside May's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how May's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.53.64.02.52.2 m/s1.52.01.41.31.22.32.8
Data source: Nicoya May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Nicoya Compares to Other Months

Weather in Nicoya varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Nicoya, focusing on differences in temperature, rainfall, humidity, and UV levels.

May and January present distinctly different weather patterns. In May, temperatures range from a minimum of 23°C (73°F) to a scorching maximum of 38°C (101°F), with an average temperature of 28°C (82°F). The month is characterized by high precipitation, totaling 286 mm (11.2 in) over 22 days, and a humidity level of 63%, making it a notably wet and warm period. In contrast, January sees milder conditions, with temperatures ranging from a minimum of 17°C (64°F) to a maximum of 36°C (97°F) and an average of 27°C (81°F). January is much drier, receiving only 12 mm (0.5 in) of rain across just 2 days, while humidity slightly increases to 66%. For more details about the January climate, you can visit Nicoya weather in January.

When comparing the weather in May and February, it’s clear that May is significantly wetter and more humid. In May, temperatures range from a minimum of 23°C (73°F) to a maximum of 38°C (101°F), with an average temperature of 28°C (82°F). This month experiences substantial rainfall, with 286 mm (11.2 in) falling over 22 days, resulting in a humidity level of 63%. In contrast, February offers a similarly warm average of 28°C (82°F) but with milder temperatures, peaking at 37°C (99°F) and a lower minimum of 19°C (66°F). Notably, February records almost no precipitation, only 2 mm (0.1 in) over 0 days, and maintains a slightly higher humidity of 64%. For more detailed weather insights, visit Nicoya weather in February.

In comparing the weather of May and March, both months share a similar average temperature of around 28°C (82°F), but May experiences more significant temperature extremes with a minimum of 23°C (73°F) and a maximum soaring up to 38°C (101°F). In contrast, March maintains slightly cooler temperatures with a minimum of 20°C (69°F) and a maximum of 37°C (99°F). Precipitation levels highlight a stark difference; May is much wetter, with 286 mm (11.2 in) of rain over 22 days, while March sees negligible rainfall of only 4 mm (0.1 in) and no rainy days. Both months have a consistent humidity level of 63%, but the overall conditions in May are much more humid due to the increased rainfall. For more detailed insights on March weather, check out Nicoya weather in March.

In comparing the weather patterns of April and May, we find that both months experience warm temperatures; however, May tends to be slightly cooler on average with an average temperature of 28°C (82°F) compared to April's 29°C (84°F). April also sees a marginally higher maximum temperature of 39°C (102°F) compared to May's peak of 38°C (101°F). A significant difference between the two months is the precipitation; May is much wetter, with 286 mm (11.2 in) of rainfall spread over 22 days, whereas April only experiences 51 mm (2.0 in) over 9 days. Interestingly, both months share the same humidity level of 63%. For more detailed information on April weather, you can visit Nicoya weather in April.

In comparing the weather between May and June, both months exhibit warm temperatures but with some notable differences. May typically showcases a minimum temperature of 23°C (73°F) and an average of 28°C (82°F), reaching a maximum of 38°C (101°F). In contrast, June offers slightly cooler temperatures, with a minimum of 22°C (72°F) and an average of 27°C (80°F), peaking at 36°C (97°F).

Precipitation levels are also higher in June, with 359 mm (14.1 in) of rainfall over 26 days, compared to 286 mm (11.2 in) over 22 days in May. Additionally, June tends to be more humid, with humidity levels at 74%, up from 63% in May. For a more detailed look at weather patterns, you can check out Nicoya weather in June.

In comparison to May, July experiences slightly cooler temperatures, with a minimum of 21°C (71°F) and a maximum of 35°C (95°F), whereas May ranges from a minimum of 23°C (73°F) to a maximum of 38°C (101°F). The average temperature in July is also lower at 27°C (80°F) compared to May's 28°C (82°F). While May sees higher precipitation levels at 286 mm (11.2 in) over 22 days, July has a total precipitation of 215 mm (8.4 in) across 23 days. Additionally, July's humidity is significantly higher at 85%, compared to May's 63%. Overall, July tends to be a bit cooler and wetter, making the climate feel more humid. For more details, check out Nicoya weather in July.

May and August both feature warm temperatures, but August tends to be slightly cooler with an average temperature of 26°C (80°F) compared to May's average of 28°C (82°F). In terms of extremes, May can reach up to 38°C (101°F), while August's maximum temperature is lower at 35°C (95°F). Both months are quite humid, with August having higher humidity levels at 82% compared to May's 63%. Precipitation is also notable in both months, with May receiving 286 mm (11.2 in) over 22 days, while August has a similar total of 290 mm (11.4 in) over 25 days. For a more detailed overview, you can check the Nicoya weather in August.

In comparing the weather between May and September, it's evident that both months exhibit warm temperatures, though September tends to be slightly cooler on average. May boasts a minimum temperature of 23°C (73°F) and an average of 28°C (82°F), peaking at a maximum of 38°C (101°F). In contrast, September features a minimum of 22°C (71°F) and an average of 26°C (79°F), with a maximum temperature of 34°C (93°F). Precipitation is notably higher in September, with 353 mm (13.9 in) over 28 days, compared to May's 286 mm (11.2 in) over 22 days. Additionally, September's humidity reaches 80%, making it feel more muggy compared to May's 63%. For a detailed look at September weather, check out Nicoya weather in September.

May and October present contrasting weather patterns, reflecting the transition between the dry and wet seasons. In May, temperatures range from a minimum of 23°C (73°F) to a maximum of 38°C (101°F), with an average of 28°C (82°F). However, this month is marked by significant rainfall, totaling 286 mm (11.2 in) across 22 days, coupled with a humidity level of 63%. In contrast, October experiences slightly cooler temperatures, with a minimum of 21°C (71°F), an average of 26°C (79°F), and a maximum of 33°C (92°F). Rainfall peaks in October, reaching 407 mm (16.0 in) over 29 days, and humidity increases to 79%. For more detailed information about weather patterns, you can visit Nicoya weather in October.

May and November in Nicoya present distinctly different weather patterns. In May, temperatures can soar from a minimum of 23°C (73°F) to a maximum of 38°C (101°F), averaging around 28°C (82°F). The month is characterized by high humidity at 63% and substantial rainfall, with 286 mm (11.2 in) falling over 22 days. In contrast, November experiences milder temperatures, with a minimum of 20°C (68°F) and a maximum of 33°C (93°F), averaging 26°C (79°F). Rainfall is also less intense in November, totaling 130 mm (5.1 in) over 15 days, and humidity rises to 79%. For a closer look at the weather specifics during November, visit Nicoya weather in November.

In comparing the weather of May and December, May tends to be hotter and significantly wetter. With temperatures ranging from a minimum of 23°C (73°F) to a maximum of 38°C (101°F) and an average of 28°C (82°F), it experiences considerable humidity at 63% and substantial rainfall of 286 mm (11.2 in) over 22 days. In contrast, December is milder, featuring temperatures between 20°C (69°F) and 35°C (95°F), with an average of 27°C (80°F). December sees much less precipitation, with only 31 mm (1.2 in) over just 4 days and slightly higher humidity at 70%. For more information on December weather, visit Nicoya weather in December.

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Conclusion: What to Expect From May Weather in Nicoya

As May unfolds in Nicoya, the weather shifts noticeably, bringing a mix of warmth and humidity that sets it apart from other months. With average temperatures hovering around a comfortable 28°C (82°F), this month experiences a blend of heat reaching up to 38°C (101°F) during the day, while nights remain mild at 23°C (73°F). Notably, May is also characterized by wetness, accumulating significant precipitation over 22 days, resulting in about 286 mm (11.2 in) of rainfall, which contrasts sharply with the drier months preceding it. This increase in humidity, averaging at 63%, adds to the tropical ambiance, making May a unique and vibrant time to experience the lush landscapes of Nicoya. For a deeper dive into how Nicoya’s climate varies throughout the year, visit Nicoya Climate.