Last updated: August 21, 2025
In May, La Unión, Chile experiences a dynamic climate characterized by a maximum temperature of 21°C (70°F) and an average of 9°C (48°F), with lows dipping to -3°C (27°F). This transitional month brings 157 mm (6.2 in) of rainfall over approximately 17 days, leading to an elevated humidity level of 86%. Residents and visitors alike can expect a blend of cool, refreshing air amidst frequent rain showers, making it a unique time to enjoy the region's natural beauty.
In May, La Union experiences a noticeable drop in temperatures as autumn sets in, with minimums reaching as low as -3°C (27°F) and a chilly average of 9°C (48°F). The shift from the mild conditions of April is evident as daytime highs cap at 21°C (70°F), inviting cozy layers for those exploring the picturesque landscapes. This month marks a transition into a cooler climate, where the lingering warmth of previous months fades, inspiring both locals and visitors to embrace the festivities of the approaching winter while enjoying the crisp, refreshing air. Overall, May serves as a gentle reminder of the seasonal change, perfect for those seeking a tranquil escape from the summer heat.
In May, La Union experiences a significant surge in precipitation, receiving 157 mm (6.2 in) over the course of 17 days. This marked increase is part of a broader trend, as rainfall steadily escalates from 98 mm (3.9 in) in April, paving the way for the wettest months of the year. The consistent rise in precipitation through the late autumn months, peaking in June at 256 mm (10.1 in), highlights the transition to the winter season. This steady progression not only underscores the region's climatic patterns but also prepares the landscape for the lush, vibrant growth that follows each rainy period. The frequent rain in May, combined with its increasing intensity, illustrates La Union's dynamic weather and the importance of this month in the seasonal cycle.
In May, La Union, Chile, experiences a noticeable uptick in humidity, reaching 86%—the highest point since the onset of autumn. This rising trend from April's 84% reflects a gradual increase in moisture as the region transitions into winter. The following months, particularly June and July, maintain this elevated level, hovering around 86% to 87%. Such humidity levels not only enhance the lush beauty of the landscape but also create a unique atmospheric richness that envelops La Union, setting the stage for the cozy, milder months ahead.
In May, La Union experiences a moderate UV Index of 4, with a recommended burn time of 30 minutes. This marks a significant shift from the peak summer months, where January and February see extreme UV levels reaching 14 and 12, respectively. As the seasons transition, the UV Index gradually declines, reflecting a safer outdoor environment for sun exposure in May compared to the harsher UV conditions of earlier months. This trend continues into the following months, with June showcasing a low UV Index of 2, further emphasizing the relative moderation in UV radiation as winter approaches. For more detailed information, check out the La Union UV Index.
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In La Union, Chile, the sun's presence begins to wane as it transitions from the vibrant summer months into the cooler grip of winter. May, with its 185 hours of sunshine, marks a notable decrease from the previous months of January through April, where sunny days were plentiful. This drop reflects a broader trend as the year progresses, with sunlight reaching its peak in the earlier months and gently tapering off, culminating in the winter months of June and July that see just 137 hours and 160 hours, respectively. However, as spring approaches in September, the sun begins to re-emerge, promising renewed warmth and brightness. This cyclical dance of light captures the essence of La Union's climate, inviting locals and visitors alike to embrace the changing seasons.
In La Union, Chile, the weather takes a noticeable shift as we move into May, with the likelihood of sunny days dropping to just 29%. This decline follows a notably bright start to the year, peaking in February at 76%, but after the radiant summers of January and February, April already hinted at diminishing sunshine with only 25% clear skies. As we transition into the cooler months of autumn and winter, this trend continues, with June, July, and August maintaining only a slightly better chance of sun, ranging from 27% to 34%. While May might not offer the ideal weather for sun-seekers, the gradual increase in sunlight odds towards the end of the year could provide hope for brighter days ahead.
In La Union, Chile, the transition into May marks a noticeable shift in daylight duration, with the days shrinking to just nine hours of light. This reduction is part of a broader trend that begins in January with a generous 14 hours of daylight, gradually tapering off as the year progresses. By April, daylight diminishes to 10 hours, setting the stage for May's brevity. As the months leading into winter unfold, June and July maintain this nine-hour pattern, creating a stable, albeit darker, period. Yet, by August, a gradual increase in daylight begins, with hours creeping back up to 10, signaling a slow return to longer days as spring approaches. This cyclical play of light and dark paints a vivid picture of seasonal rhythms, inviting residents and visitors alike to embrace the unique essence of each month.
In La Union, Chile, the May winds gently dance with an average speed of 2.8 m/s (6 mph), marking a slight uptick from the calmer breezes of April at 2.4 m/s (5 mph). As the seasons transition, wind patterns reveal a subtle rhythm; May's breezes hint at the warmer, more robust gusts that will return in the spring and summer months. This gradual increase sets the stage for the fresher winds of August and December, where speeds range from 3.3 to 3.4 m/s (7 to 8 mph), creating a welcoming climate for outdoor activities. Overall, the month of May embodies a transitional period—where the tranquility of early autumn meets the promise of the bolder winds ahead.
Weather in La Union varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in La Union, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparison, May presents a cooler climate with temperatures ranging from a minimum of -3°C (27°F) to a maximum of 21°C (70°F), while January features milder weather, with thermometers typically fluctuating between 2°C (35°F) and 32°C (89°F). Additionally, May experiences considerably higher precipitation levels, totaling 157 mm (6.2 in) over 17 days, in contrast to January's relatively dry month with just 27 mm (1.1 in) over 5 days. Humidity is slightly higher in May at 86%, compared to 81% in January. For more details on January weather specifically, you can check La Union weather in January.
When comparing the weather in May and February, notable differences emerge in temperature and precipitation. May experiences a cooler range, with minimum temperatures dropping to -3°C (27°F) and averaging around 9°C (48°F), while maximum temperatures only reach 21°C (70°F). In contrast, February boasts a much warmer climate, characterized by minimum temperatures of 4°C (39°F) and a much higher average of 17°C (62°F), peaking at an impressive 37°C (98°F). Furthermore, May sees significantly more rainfall, with 157 mm (6.2 in) over 17 days, compared to February's relatively dry conditions with only 29 mm (1.1 in) across 4 days. Humidity levels are marginally higher in May at 86%, compared to February's 80%. For more detailed information on February weather patterns, you can check La Union weather in February.
When comparing the weather between March and May, we can see some notable differences. March experiences milder temperatures with a minimum of 2°C (36°F) and an average high of 30°C (85°F), making it generally warmer than May, which has a chillier minimum of -3°C (27°F) and an average of 9°C (48°F). Additionally, May is significantly wetter, receiving 157 mm (6.2 in) of precipitation over 17 days, compared to March's 75 mm (2.9 in) spread over just 7 days. Despite this, March enjoys slightly lower humidity at 79%, while May is more humid at 86%. For more specific details on March weather, you can visit La Union weather in March.
In comparing the weather of May and April, we can see that April generally experiences slightly warmer temperatures, with an average of 11°C (53°F) compared to May's average of 9°C (48°F). April also boasts higher maximum temperatures, reaching up to 25°C (77°F), whereas May has a maximum of 21°C (70°F). However, May is notably wetter, receiving 157 mm (6.2 in) of precipitation over 17 days, compared to April's 98 mm (3.9 in) over 12 days. Humidity levels are fairly similar, with May at 86% and April at 84%. For a detailed look at April's weather in La Union, you can check out La Union weather in April.
When comparing the weather conditions in May and June, it is evident that both months experience relatively cool temperatures and high humidity levels. In May, temperatures range from a minimum of -3°C (27°F) to a maximum of 21°C (70°F), with an average of 9°C (48°F). The precipitation during this month amounts to 157 mm (6.2 in) over 17 days. In contrast, June sees even lower temperatures, with a minimum of -4°C (25°F) and a maximum of 15°C (60°F), averaging at 7°C (45°F). Additionally, June experiences increased precipitation, totaling 256 mm (10.1 in) over 20 days. Both months maintain a humidity level of 86%, contributing to a damp climate. For a more detailed look at June's weather patterns, you can visit La Union weather in June.
In May, the weather features a broader temperature range, with minimums of -3°C (27°F) and maximums reaching up to 21°C (70°F), along with an average temperature of 9°C (48°F). Precipitation levels are significant, with 157 mm (6.2 in) spread over 17 days and humidity at a high 86%. In contrast, July experiences slightly cooler temperatures, with minimums dropping to -4°C (25°F) and maximums peaking at 15°C (60°F), resulting in an average temperature of 6°C (44°F). This month sees even higher precipitation, totaling 199 mm (7.8 in) over the same number of rainy days and slightly increased humidity at 87%. For more details on July's climate, you can check La Union weather in July.
In May, temperatures in La Union typically range from a chilly -3°C (27°F) at night to a comfortable 21°C (70°F) during the day, with an average of 9°C (48°F). However, the month also sees significant precipitation, totaling 157 mm (6.2 in) over approximately 17 days, creating a humid atmosphere with an average humidity level of 86%.
In contrast, August experiences a slight dip in temperatures, with minimums reaching -5°C (23°F) and maximums peaking at 17°C (62°F), giving an average of 7°C (45°F). Precipitation increases to 226 mm (8.9 in) over 18 days, maintaining similar humidity levels at 87%. This makes August notably wetter and colder compared to May. For more detailed insights on August weather, you can visit La Union weather in August.
May and September both experience mild temperatures, though May generally sees slightly cooler averages. In May, the temperature ranges from a minimum of -3°C (27°F) to a maximum of 21°C (70°F), with an average of 9°C (48°F), while September offers a similar range, with temperatures between -2°C (29°F) and 21°C (71°F), and an average of 8°C (47°F). Precipitation is higher in May, totaling 157 mm (6.2 in) over 17 days, compared to September's 118 mm (4.6 in) across 13 days. Humidity levels are quite similar, with May at 86% and September slightly lower at 85%. For more detailed insights on September weather, check out La Union weather in September.
In comparing the weather of May and October, we observe notable differences in temperature and precipitation. May experiences cooler temperatures, with a minimum of -3°C (27°F) and an average of 9°C (48°F), while October sees slightly milder conditions, with a minimum of -1°C (30°F) and an average of 10°C (50°F). The maximum temperatures also rise in October, reaching up to 24°C (75°F), compared to May's peak of 21°C (70°F). Additionally, May has more precipitation at 157 mm (6.2 in) over 17 days, while October has less, at 115 mm (4.5 in) over 15 days. Humidity levels are similar, with May at 86% and October at 83%. For more detailed information, you can check La Union weather in October.
May and November present contrasting weather patterns. In May, temperatures range from a chilly minimum of -3°C (27°F) to a comfortable maximum of 21°C (70°F), with an average of 9°C (48°F). This month also experiences significant rainfall, totaling 157 mm (6.2 in) over approximately 17 days, accompanied by high humidity levels at 86%. In contrast, November enjoys milder temperatures, with minimums around 1°C (35°F) and maximums reaching 25°C (77°F), resulting in an average of 13°C (55°F). Precipitation is significantly less during this month, with 73 mm (2.9 in) over 9 days, and a slightly lower humidity at 80%. For more details, check out La Union weather in November.
In May, temperatures range from a chilly minimum of -3°C (27°F) to a more pleasant maximum of 21°C (70°F), with an average temperature of 9°C (48°F). During this month, rainfall is quite significant, averaging 157 mm (6.2 in) over 17 days, contributing to a high humidity level of 86%. In contrast, December brings warmer weather with temperatures ranging from a minimum of 3°C (38°F) to a maximum of 30°C (86°F), and an average temperature of 15°C (59°F). Precipitation drops dramatically to just 52 mm (2.0 in) over only 6 days, resulting in a slightly lower humidity level of 82%. For more details on December's weather, you can check La Union weather in December.
As May unfolds in La Union, the temperature takes a notable dip, transitioning from the warmth of earlier months to a cooler, more refreshing climate. The average high barely reaches 21°C, while the chillier lows can slide down to -3°C, creating a significant contrast with the milder temperatures of summer. This month is also characterized by an uptick in rainfall, with around 17 days marked by precipitation, contributing to the 157 mm accumulated. The higher humidity level of 86% gives the air that distinct wintry feel, making May a unique prelude to the colder months. For more insights on climate patterns, check out La Union Climate.