May Weather in Tacna, Peru

Last updated: August 27, 2025

In May, the weather in Tacna, Peru is characterized by mild temperatures and occasional light rain, making it an inviting month for visitors. With a maximum of 26°C (78°F) and an average temperature of 18°C (65°F), the days are comfortably warm, while the nights can drop to a cool 13°C (55°F). The region experiences only about 17 mm (0.7 in) of precipitation across just 1 day, allowing for plenty of sunshine. Coupled with a high humidity level of 88%, this month showcases a delightful blend of warmth and refreshing moisture, perfect for exploring Tacna's vibrant culture and stunning landscapes.

May Temperature in Tacna

In May, Tacna, Peru experiences a delightful shift into cooler temperatures, with minimums dropping to 13°C (55°F) and an average reaching 18°C (65°F). This marks a gradual transition from the warmer months that precede it, as the highs settle comfortably at 26°C (78°F). Compared to earlier months where temperatures peaked above 27°C, this reduction creates a refreshing atmosphere, ideal for exploring the city's charming streets and rich history. As the weather becomes milder, locals and visitors alike enjoy the balance of cool evenings and pleasant daytime warmth, making May a delightful time to experience Tacna’s unique offerings.

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

The chart illustrates May temperature patterns in Tacna, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tacna, 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).
JanFebMarAprMayJunJulAugSepOctNovDec696968666462616162636567
Data source: Temperature data for Tacna 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 Tacna

May marks a notable shift in Tacna's precipitation patterns, with 17 mm (0.7 in) of rain—a modest increase from April's minimal 6 mm (0.2 in). This uptick is especially significant given that May typically experiences just one day of rainfall, indicating that even brief showers can contribute to the region's arid climate. As the year progresses into June, precipitation trends continue to slowly rise, hinting at a gradual transition as the dry season approaches. This pattern underscores Tacna's unique climate, where the dry months dominate, yet every drop of rain is welcomed as a rare and refreshing event.

May Precipitation Trends in Tacna

The chart displays monthly precipitation patterns in Tacna, 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 Tacna, May typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec493521617191917169611
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

May Humidity in Tacna

In Tacna, Peru, the month of May experiences a slight dip in humidity at 88%, marking a gentle transition as the rainy season approaches its end. This decrease is part of a broader trend observed from January through May, where humidity gradually rises to a peak of 90% in the early months, before cooling off slightly. The humidity remains relatively stable through April before beginning a gradual decline in the following months. By June, it decreases to 86%, indicating the onset of drier winter months characterized by progressively lower humidity. This pattern highlights not only the relatively humid conditions typical of Tacna's early year but also the city's shift towards a drier climate as winter approaches.

May Average Humidity in Tacna

This chart illustrates the average monthly humidity levels in Tacna, 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 Tacna is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%90%90%90%88%86%83%82%83%87%87%85%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Tacna

In Tacna, Peru, the UV Index experiences a noticeable decrease in May, dropping to 10 with a very high exposure category, allowing for a slightly longer burn time of 15 minutes. This marks a shift from the extreme levels seen in the earlier months, where indices soared to 16 in January and February, assuring minimal outdoor time to avoid sunburn. As summer draws closer, however, the UV levels remain vigilant, suggesting that protective measures should still be a priority. As you plan your outdoor activities, take caution in this radiant sun, and check out Tacna UV Index for the latest updates.

Maximum UV Index Levels in Tacna for May

The chart shows the monthly maximum UV Index (UVI) for Tacna 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 Tacna typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1616141210891113151616
Data source: Tacna 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 Tacna

In Tacna, Peru, May shines brightly with an impressive 333 hours of sunshine, contributing to a delightful spring ambiance. The trend of increasing daylight hours is evident, as this month follows a steady rise from January's 277 hours and notably captures a slight dip in April. The sunlit days in May are a prelude to an even sunnier winter, with June and July maintaining robust sunlight, firmly establishing Tacna as a haven for sun-seekers. With each passing month, the gradual ascent in sunshine hours paints a vibrant picture of the region's beautiful climatology, showcasing its consistent allure throughout the year.

Monthly Sunshine Duration in Tacna: May Highlighted

The May sunshine duration represents the total number of hours Tacna 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.
JanFebMarAprMayJunJulAugSepOctNovDec277h302h334h328h333h315h332h342h346h368h364h365h
Data source: Tacna May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Tacna During May

In Tacna, Peru, May continues the trend of relatively sunny weather, boasting a 41% chance of sunshine, which is consistent with the previous month's 42%. As spring transitions into early winter, the sun remains a frequent visitor, although slightly reduced from the peak sunshine months of July and October, which enjoy chances of around 53% and 56% respectively. May sits comfortably in the middle of the spectrum, illustrating the region's characteristic sunny disposition before it shifts towards the overcast conditions of the latter part of the year. This makes May a delightful time to experience Tacna's vibrant landscapes basking in the warm sun.

Percentage of Sunny Days in May in Tacna

The chart illustrates the percentage of sunny days in Tacna 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 Tacna experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec30%32%27%42%41%40%53%50%43%56%31%16%
Data source: Tacna May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Tacna in May

In Tacna, Peru, the daylight duration in May marks the continuation of a gradual shift towards shorter days as the region transitions through the year. With 11 hours of daylight, May aligns with the months leading up to winter, demonstrating a consistent pattern that began in April. The sunlight gradually wanes after January’s peak of 13 hours, echoing a typical Southern Hemisphere trend as the days become shorter. Notably, Tacna experiences this steady daylight duration of 11 hours from May through August, creating a harmonious balance in the region’s natural rhythm before daylight begins to increase again in October. This gradual ebb and flow of sunlight not only defines the seasons but also influences the vibrant way of life in this unique locale.

Average Daylight Hours in Tacna for May

The chart illustrates the variation in daylight duration in Tacna throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec13h 3m12h 39m12h 9m11h 39m11h 14m11h 3m11h 9m11h 30m11h 59m12h 30m12h 57m13h 10m
Data source: Tacna daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Tacna

In Tacna, Peru, the month of May marks a subtle transition in wind patterns as the average wind speed drops to 1.9 m/s (4 mph), slightly lower than the preceding months. This continues a trend observed since the start of the year, with wind speeds gradually decreasing from a comfortable 2.3 m/s (5 mph) in January to this calmer May breeze. As we approach mid-year, this gentle shift suggests a serene environment where outdoor activities can be enjoyed without the brisk winds typical of earlier months. Following May, the wind speeds do stabilize around 1.9 m/s (4 mph) through June and August, before a gradual increase in early fall. Overall, May serves as a gentle interlude in Tacna’s wind profile, blending pleasant weather with a hint of tranquility.

Average May Wind Speed in Tacna

The chart displays monthly wind speed patterns in Tacna, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.32.22.12.11.9 m/s1.91.81.92.02.22.22.3
Data source: Tacna May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Tacna Compares to Other Months

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

In comparing the weather of May and January, we see that January tends to be slightly warmer with average temperatures ranging from a minimum of 15°C (59°F) to a maximum of 27°C (81°F), compared to May's 13°C (55°F) minimum and 26°C (78°F) maximum. Additionally, January experiences significantly higher precipitation, with 48 mm (1.9 in) over 11 days, while May sees only 17 mm (0.7 in) over just one day. Despite the difference in rainfall, both months have high humidity levels, hovering around 88% in May and 89% in January. For those interested in more details about January weather, you can check Tacna weather in January.

In comparing the weather between May and February, we find notable differences. May generally experiences milder temperatures with a minimum of 13°C (55°F), an average of 18°C (65°F), and a maximum of 26°C (78°F), alongside relatively low precipitation of 17 mm (0.7 in) over just 1 day, and a humidity level of 88%. In contrast, February is warmer, with a minimum of 15°C (58°F), an average of 21°C (70°F), and a maximum of 28°C (82°F). However, it sees significantly more rainfall, recording 35 mm (1.4 in) over about 10 days, and a slightly higher humidity at 90%. For more detailed insights on February weather in Tacna, you can check Tacna weather in February.

In comparing the weather of March and May, we find that May generally has slightly lower average temperatures, ranging from a minimum of 13°C (55°F) to a maximum of 26°C (78°F). In contrast, March features a higher minimum temperature of 14°C (58°F) and an average maximum of 27°C (82°F). Precipitation levels are also noteworthy; March sees more rain with 21 mm (0.8 in) spread over 6 days, while May experiences only 17 mm (0.7 in) in just 1 day of rain. Humidity levels remain comparable, with May at 88% and March slightly higher at 90%. For more detailed insights into March weather, you can check out Tacna weather in March.

In comparing the weather between April and May, both months showcase relatively mild temperatures, with May's average temperature slightly cooler at 18°C (65°F) compared to April's 19°C (67°F). Interestingly, both months experience a maximum temperature of 26°C (79°F). However, May sees a rise in precipitation, reaching 17 mm (0.7 in) over one day, while April remains quite dry with only 6 mm (0.2 in) and no days of rain. Humidity levels in May are at 88%, slightly lower than April's 90%, indicating a marginally less humid atmosphere as the month progresses. For more detailed insights, you can check out the Tacna weather in April.

May typically showcases warmer weather compared to June, with average temperatures reaching 18°C (65°F) and a maximum of 26°C (78°F). In contrast, June sees slightly cooler temperatures, with an average of 17°C (63°F) and a maximum of 24°C (75°F). Both months experience similar levels of rainfall, with May receiving 17 mm (0.7 in) over 1 day and June slightly higher at 19 mm (0.7 in) over 2 days. Humidity levels are also comparable, hovering around 88% in May and slightly lower at 86% in June. For more specific details, you can check Tacna weather in June.

In comparison to May, July features slightly cooler average temperatures, with a minimum of 11°C (52°F) and an average of 16°C (61°F), contrasted with May’s minimum of 13°C (55°F) and average of 18°C (65°F). However, July can reach slightly higher maximum temperatures, peaking at 28°C (83°F) compared to May's max of 26°C (78°F). Both months experience similar levels of precipitation, with 19 mm (0.7 in) recorded in July over two days, just one more day of rainfall than May's single rainy day and total of 17 mm (0.7 in). Humidity is marginally lower in July at 83%, compared to May's higher humidity of 88%. For more information on July weather specifics, check Tacna weather in July.

May weather features a more favorable range of temperatures, with averages reaching up to 18°C (65°F) and maximums climbing to 26°C (78°F). In contrast, August tends to be slightly cooler, with average temperatures around 16°C (62°F) and maximums peaking at 24°C (75°F). Both months experience minimal precipitation, with 17 mm (0.7 in) over just one day, but May exhibits higher humidity levels at 88% compared to August's 82%. For those interested in specific weather details for August, additional information can be found at Tacna weather in August.

May and September present a noticeable shift in weather patterns. In May, temperatures range from a minimum of 13°C (55°F) to a pleasant average of 18°C (65°F), reaching a maximum of 26°C (78°F). The month typically sees only about 17 mm (0.7 in) of precipitation over a single day, combined with relatively high humidity levels at 88%.

In contrast, September's temperatures are slightly cooler, with a minimum of 11°C (52°F) and an average of 16°C (62°F), peaking at 25°C (77°F). Precipitation is minimal as well, at 16 mm (0.6 in) over one day, but the humidity decreases to 83%. Overall, while both months are relatively dry, May tends to offer warmer temperatures, making it generally more comfortable for outdoor activities. For a detailed look at September's weather, visit Tacna weather in September.

In May, the weather tends to be slightly warmer, with average temperatures around 18°C (65°F) and a maximum of 26°C (78°F), but it also sees more precipitation at 17 mm (0.7 in) over just 1 day. In contrast, October features similar maximum temperatures up to 26°C (78°F) but has a slightly cooler average of 17°C (64°F) and significantly less rainfall at 9 mm (0.4 in) with no rainy days at all. Additionally, humidity levels are quite comparable in both months, with May at 88% and October at 87%. For more detailed information on October weather, you can check Tacna weather in October.

May and November in Tacna share similar temperature ranges, with both months averaging around 18°C (65°F) and reaching highs of 26°C (78°F). However, May tends to be slightly wetter, with an average of 17 mm (0.7 in) of precipitation spread over one day, while November enjoys much drier conditions, recording only 6 mm (0.2 in) of precipitation across the month and no rainy days. Additionally, humidity levels are quite comparable, with May at 88% and November at 87%. For more details on the weather in November, you can visit Tacna weather in November.

In May, the weather features a comfortable range of temperatures with minimums around 13°C (55°F) and maximums hitting 26°C (78°F), alongside an average of 18°C (65°F). The month experiences light precipitation of 17 mm (0.7 in) over just one day, contributing to relatively high humidity levels at 88%. In contrast, December offers a similar temperature range, with minimums around 13°C (56°F), averages of 19°C (67°F), and maximums peaking at 27°C (81°F). December is slightly drier, seeing only 11 mm (0.4 in) of precipitation over three days, and has slightly lower humidity at 85%. For more detailed weather information, check Tacna weather in December.

Compare Tacna's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Tacna

As May unfolds in Tacna, the weather presents a delightful transition, marked by pleasantly mild temperatures and a significant dip in rainfall, with only one day of precipitation to note. This month boasts a comfortable average temperature that invites both locals and visitors to enjoy the outdoors without the extremes typical of other seasons. With an average humidity of 88%, the atmosphere feels refreshing, making May a perfect time to explore the charm of Tacna. For a deeper look into Tacna's overall climate patterns, visit Tacna Climate.