May Weather in Waikoloa, United States

Last updated: February 24, 2025

In May, Waikoloa experiences a mild tropical climate with average temperatures around 22°C (71°F), peaking at 28°C (83°F) and dipping to a pleasant 14°C (58°F) at night. This month is characterized by its high humidity, averaging 80%, which contributes to an overall lush environment. However, visitors should be prepared for significant rainfall, as May brings an average of 252 mm (9.9 in) of precipitation over 28 rain-soaked days. Despite the frequent showers, Waikoloa's abundant beauty and warm temperatures make it an attractive destination for those seeking both relaxation and adventure!

May Temperature in Waikoloa

In Waikoloa, May ushers in a delightful transition towards warmer weather, with temperatures showcasing a harmonious blend of comfortable conditions. The month opens with a minimum temperature of 14°C (58°F), allowing for pleasant mornings, while the average temperature rises to 22°C (71°F), providing the perfect backdrop for outdoor activities. As the days unfold, an inviting maximum of 28°C (83°F) beckons sun-seekers, marking a gradual increase from earlier months. This upward trend is evident as May temperatures reach their peak, hinting at the summer warmth to come. Overall, May in Waikoloa is characterized by its balmy days and mild nights, making it an ideal time to revel in the island’s natural beauty.

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

The chart illustrates May temperature patterns in Waikoloa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec686768707173747474737169
Data source: Temperature data for Waikoloa generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Waikoloa

May in Waikoloa marks a significant uptick in precipitation, with 252 mm (9.9 in) of rain recorded over 28 days. This trend of increasing rainfall continues from the previous months, where April also saw substantial precipitation at 182 mm (7.2 in). As spring transitions into summer, May's showers intensify, setting the stage for the even wetter months ahead, particularly June and July, which mirror this upward trend with 263 mm (10.4 in) and 286 mm (11.3 in), respectively. The extended rainy periods also suggest that residents and visitors can expect more frequent, albeit brief, downpours, adding a lush vibrancy to the landscape. Overall, the escalating precipitation in May not only enhances the region’s natural beauty but also underscores the shift towards a more humid summer season.

May Precipitation Trends in Waikoloa

The chart displays monthly precipitation patterns in Waikoloa, 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.
JanFebMarAprMayJunJulAugSepOctNovDec112140117182252263286369222196127179
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Waikoloa

In May, Waikoloa continues to experience a consistent humidity level of 80%, mirroring the conditions of April. This reflects a gradual increase from the drier months of January through March, where humidity hovered around 77-79%. As the region transitions into the warmer months, humidity levels rise, peaking in August at 84%. This upward trend indicates a typical tropical pattern, where the humidity slightly fluctuates but generally increases as summer approaches, providing a lush and vibrant atmosphere ideal for outdoor activities and exploration.

May Average Humidity in Waikoloa

This chart illustrates the average monthly humidity levels in Waikoloa, with May's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how May's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec79%79%77%80%80%82%83%84%82%83%83%81%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Waikoloa

In May, Waikoloa experiences an extreme UV Index of 13, mirroring April's levels and continuing the trend of heightened sun exposure that began earlier in the year. With a burn time of just 10 minutes, outdoor enthusiasts should be particularly cautious as they enjoy the beautiful Hawaiian landscapes. This pattern of escalating UV levels persists into the summer months, so it's essential to stay informed and protected during these peak times. Whether you're lounging by the beach or hiking the lush trails, remember to check the UV Index regularly for safe sun practices. For more detailed information, visit Waikoloa UV Index.

Maximum UV Index Levels in Waikoloa for May

The chart shows the monthly maximum UV Index (UVI) for Waikoloa 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.
JanFebMarAprMayJunJulAugSepOctNovDec811121313131414131298
Data source: Waikoloa 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 Waikoloa

In Waikoloa, United States, May ushers in a spectacular surge of sunshine, boasting 329 hours of radiant daylight. This delightful uptick continues the trend from April, which sees 300 hours, as the region transitions into longer, sunnier days. The pattern is undeniable; each month from January to May witnesses a steady climb in sunshine hours, culminating in a peak that sets the stage for the even sunnier months ahead. June, for instance, shows an increase to 336 hours, followed by 343 hours in July, making summer the golden period for sun-seekers. As the year unfolds, Waikoloa remains a beacon of bright, inviting weather, perfect for those looking to bask in the beauty of its tropical climate.

Monthly Sunshine Duration in Waikoloa: May Highlighted

The May sunshine duration represents the total number of hours Waikoloa 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.
JanFebMarAprMayJunJulAugSepOctNovDec220h253h275h300h329h336h343h330h311h295h268h262h
Data source: Waikoloa May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Waikoloa During May

In Waikoloa, the likelihood of sunny weather reaches a low of 39% in May, marking a notable dip compared to the preceding months. This decline is part of a broader trend as we transition from the relatively brighter early spring months, where chances hover around the 45-53% range, into the late spring and early summer. Interestingly, while May struggles for sunshine, October emerges with a more favorable 50% chance of clear skies, suggesting that although May can be a transitional month, it sets the stage for sunnier days ahead.

Percentage of Sunny Days in May in Waikoloa

The chart illustrates the percentage of sunny days in Waikoloa 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 Waikoloa experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec45%53%48%44%39%38%40%44%47%50%47%37%
Data source: Waikoloa May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Waikoloa in May

In Waikoloa, the transition into May brings a delightful expansion of daylight, with the hours stretching to a full 13 hours—the longest in the year thus far. This gradual increase, beginning in March with 12 hours and peaking in May, reflects the region's shift from the shorter days of winter. Following May, the daylight remains consistent at 13 hours throughout June and July before beginning a gentle decline. As summer wanes, August sees a slight drop to 12 hours, leading into a more gradual tapering off as the year progresses back toward winter's shorter days. This natural ebb and flow of daylight in Waikoloa not only enriches the experience of its stunning landscapes but also signals the arrival of summer adventures.

Average Daylight Hours in Waikoloa for May

The chart illustrates the variation in daylight duration in Waikoloa throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec11h 3m11h 29m12h 2m12h 36m13h 4m13h 18m13h 10m12h 45m12h 13m11h 38m11h 9m10h 55m
Data source: Waikoloa daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Waikoloa

In Waikoloa, the month of May heralds a gentle increase in wind activity, with an average wind speed of 2.6 m/s (6 mph), slightly surpassing the more tranquil breezes of earlier months. This uptick marks the beginning of a gradual wind escalation that continues into the summer, setting the stage for a lively atmosphere. As temperatures rise and the lush landscape thrives, the consistent winds of May, coupled with pleasant summer conditions, enhance outdoor activities and create the perfect backdrop for adventure. Following this trend, June and July enjoy even stronger breezes, emphasizing a subtle transition from the calm of spring to the invigorating winds of summer.

Average May Wind Speed in Waikoloa

The chart displays monthly wind speed patterns in Waikoloa, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.42.42.42.32.6 m/s2.73.02.72.72.82.12.3
Data source: Waikoloa May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Waikoloa Compares to Other Months

The weather in Waikoloa changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of May's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Waikoloa and find detailed weather information for every month.

In comparing the weather between May and January, we see that May tends to be slightly warmer, with average temperatures ranging from a minimum of 14°C (58°F) to a maximum of 28°C (83°F), compared to January's range of 13°C (56°F) to 27°C (80°F). Additionally, May experiences significantly more precipitation, with 252 mm (9.9 in) over 28 days, while January sees just 112 mm (4.4 in) across 19 days. Humidity levels are quite similar, at 80% in May and 79% in January. This makes May a more humid and wetter month overall, while January offers milder, drier conditions. For more detailed insights, you can check Waikoloa weather in January.

When comparing the weather in May and February, it's clear that May tends to be warmer and wetter. In May, temperatures range from a minimum of 14°C (58°F) to a maximum of 28°C (83°F), with an average of 22°C (71°F). In contrast, February's temperatures are slightly cooler, with a minimum of 12°C (53°F) and a maximum of 26°C (80°F) and an average of 20°C (67°F). Precipitation also differs significantly, as May experiences 252 mm (9.9 in) of rainfall over 28 days, while February sees only 140 mm (5.5 in) across 19 days. The humidity levels are quite similar, with May at 80% and February at 79%. For a more detailed look at February's weather, you can visit Waikoloa weather in February.

In comparing the weather conditions of March and May, March tends to be slightly cooler, with average temperatures ranging from a minimum of 14°C (57°F) to a maximum of 27°C (81°F), while May sees warmer averages, with temperatures ranging from 14°C (58°F) to 28°C (83°F). March also experiences less precipitation, with 117 mm (4.6 in) falling over 22 days, compared to May, which has significantly higher rainfall at 252 mm (9.9 in) over 28 days. Humidity levels are slightly lower in March, recorded at 77%, in contrast to May's 80%. For a more detailed look, you can visit Waikoloa weather in March.

In comparing the weather of April and May, both months exhibit similar temperature ranges, with April having a slightly higher minimum temperature of 15°C (58°F) and an average temperature of 21°C (70°F), while May sees a minimum of 14°C (58°F) and an average of 22°C (71°F). However, May is noticeably wetter, receiving 252 mm (9.9 in) of precipitation over 28 days compared to April's 182 mm (7.2 in) over 27 days. Both months maintain a consistent humidity level of 80%, contributing to a tropical feel. For more detailed insights into April weather, you can check Waikoloa weather in April.

In comparing the weather between May and June, we notice a slight increase in temperatures. May's minimum temperature is 14°C (58°F) with an average of 22°C (71°F) and a maximum of 28°C (83°F), while June sees a minimum of 17°C (63°F) and an average of 23°C (73°F), leading to a maximum of 29°C (84°F). Both months experience considerable rainfall, with May receiving 252 mm (9.9 in) over 28 days and June recording 263 mm (10.4 in) over 29 days. The humidity levels are also similar, with May at 80% and June slightly higher at 82%. For more detailed information, you can check Waikoloa weather in June.

May and July present quite similar weather patterns, yet they have their distinct characteristics. In May, the temperatures range from a minimum of 14°C (58°F) to a maximum of 28°C (83°F), with an average of 22°C (71°F). The month is marked by considerable precipitation, totaling 252 mm (9.9 in) over 28 days, contributing to a humidity level of 80%. In contrast, July experiences slightly warmer temperatures, with a minimum of 18°C (65°F) and an average of 23°C (74°F), peaking at 29°C (84°F). Additionally, July sees increased precipitation of 286 mm (11.3 in) spread across 30 days, resulting in a humidity of 83%. For a deeper look into specific weather conditions during July, visit Waikoloa weather in July.

May and August present noticeably different weather patterns. In May, temperatures range from a minimum of 14°C (58°F) to a maximum of 28°C (83°F), with an average of 22°C (71°F). However, it comes with considerable rainfall, totaling 252 mm (9.9 in) over 28 days and an average humidity of 80%. In contrast, August sees slightly warmer temperatures, with a minimum of 18°C (64°F) and a maximum of 29°C (85°F), along with an average of 23°C (74°F). August is wetter as well, receiving 369 mm (14.5 in) of precipitation across 30 days and a higher humidity of 84%. For more detailed information, you can check Waikoloa weather in August.

In comparing the weather of May and September, May tends to be slightly cooler with an average temperature of 22°C (71°F), compared to September's average of 23°C (74°F). While both months experience similar humidity levels, May receives more rainfall, totaling 252 mm (9.9 in) over 28 days, whereas September experiences 222 mm (8.8 in) during the same number of days. Notably, September also sees higher maximum temperatures, reaching up to 30°C (86°F), compared to May's maximum of 28°C (83°F). For more insights on September weather, you can check Waikoloa weather in September.

May and October offer relatively mild and humid weather, but they do have some differences. In May, temperatures range from a minimum of 14°C (58°F) to a maximum of 28°C (83°F), with an average of 22°C (71°F). This month sees a substantial amount of rain, with 252 mm (9.9 in) of precipitation over 28 days, contributing to an 80% humidity level. In contrast, October boasts slightly warmer temperatures, with a minimum of 16°C (62°F) and a maximum of 30°C (86°F), and an average of 23°C (73°F). The precipitation in October is lower, totaling 196 mm (7.7 in) over 27 days, resulting in a humidity level of 83%. For more detailed information, you can check Waikoloa weather in October.

In comparing the weather patterns of May and November, both months feature similar average temperatures, hovering around 22°C (71°F). However, May tends to experience slightly warmer maxima, reaching up to 28°C (83°F), while November can peak at 29°C (84°F). Precipitation is notably higher in May, with 252 mm (9.9 in) spread over 28 days, compared to November's 127 mm (5.0 in) over just 22 days. Humidity levels are comparable, with May at 80% and November slightly higher at 83%. For a more detailed look at November’s weather, you can check out Waikoloa weather in November.

May and December in Waikoloa present mild temperatures and similar conditions, yet notable differences in precipitation characterize the two months. In May, temperatures range from a minimum of 14°C (58°F) to a maximum of 28°C (83°F), with an average of 22°C (71°F), accompanied by significant rainfall totaling 252 mm (9.9 in) over 28 days, contributing to a humidity level of 80%. In contrast, December offers slightly cooler temperatures, ranging from a minimum of 13°C (56°F) to a maximum of 28°C (82°F), with an average of 20°C (69°F). Rainfall in December is less intense, measuring 179 mm (7.1 in) across 22 days, resulting in a slightly higher humidity of 81%. For more detailed information about the weather in December, check Waikoloa weather in December.

Compare Waikoloa's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Waikoloa

In May, Waikoloa experiences a transition into warmer and more humid conditions compared to the preceding months, with delightful temperatures inviting outdoor adventures. Although the warmth reaches a pleasant peak, the region also sees an increase in precipitation, making it one of the wetter months of the year with nearly every day touched by rain. This combination of 80% humidity and frequent showers adds a refreshing element to the atmosphere, distinguishing May from the drier, cooler months earlier in the year. For a deeper dive into the climate patterns of this beautiful locale, visit Waikoloa Climate.