May Weather in Guimaraes, Portugal

Last updated: February 24, 2025

In May, Guimarães, Portugal, showcases a vibrant tapestry of weather, with maximum temperatures reaching a delightful 31°C (89°F) and an average of 16°C (61°F). The month often begins with brisk mornings, dipping as low as 2°C (36°F), compelling residents and visitors alike to embrace layers at dawn. Rainfall is substantial, totaling 103 mm (4.1 in) over approximately 10 days, contributing to the region's lush greenery. The air carries a noticeable humidity level of 78%, enhancing the freshness of springtime strolls through the historic streets. Experience Guimarães in May, where the interplay of warmth and moisture creates a uniquely inviting atmosphere.

May Temperature in Guimaraes

In May, Guimarães, Portugal, experiences a delightful shift towards warmth, with temperatures ranging from a mild 2°C (36°F) at night to a soaring 31°C (89°F) in the daytime. The average temperature climbs to a comfortable 16°C (61°F), indicating a steady transition from the cooler months of spring. This month marks a significant leap from the preceding April, as May not only reflects a rise in maximum temperatures but also an increase in the overall warmth compared to earlier spring months. As nature bursts into bloom, the pleasant weather invites both locals and tourists to explore the rich history and scenic beauty of this captivating region, making it an ideal time to visit.

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

The chart illustrates May temperature patterns in Guimaraes, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec454951556164696966595148
Data source: Temperature data for Guimaraes 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 Guimaraes

In May, Guimarães experiences a notable decrease in precipitation, with 103 mm (4.1 in) of rainfall occurring over roughly 10 days. This is a significant drop from the wetter months preceding it; for example, April boasts 170 mm (6.7 in) over 15 days. As spring transitions into summer, the weather becomes more temperate, heralding drier days ahead. This reduction in rainfall not only offers a respite from the earlier showers but also contributes to the region's lush, verdant landscape that flourishes in the afterglow of the spring rains. With June on the horizon, even less precipitation is anticipated, suggesting a trend towards increasing dryness and clear skies as the season progresses.

May Precipitation Trends in Guimaraes

The chart displays monthly precipitation patterns in Guimaraes, 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.
JanFebMarAprMayJunJulAugSepOctNovDec13220219217010365292849152206257
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Guimaraes

In May, Guimarães, Portugal experiences a comfortable humidity level of 78%, maintaining a trend of gradual decrease as the region transitions into warmer months. Following the relatively high humidity of January at 87% and the slightly lower levels in February and March, May's figures reflect a consistent pattern of declining moisture content that peaks in the winter months. As June approaches, humidity drops further to 71%, signaling a shift towards drier summer conditions. This pattern highlights the enchanting evolution of Guimarães’ climate, where spring begins to breathe life into the landscape, making May a delightful time to enjoy the city's vibrant greenery and historic charm.

May Average Humidity in Guimaraes

This chart illustrates the average monthly humidity levels in Guimaraes, 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.
JanFebMarAprMayJunJulAugSepOctNovDec87%81%78%79%78%71%63%64%71%79%86%87%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Guimaraes

In May, Guimarães experiences a significant jump in the UV Index, peaking at 9, which classifies it within the very high exposure category. This intensity means that, similar to April, sun-seekers should take care as the burn time is limited to just 15 minutes. This trend of increasing UV levels from January through May highlights a transition to more summer-like conditions, encouraging residents and visitors to embrace sun safety practices. As we move into June, the index escalates further to 11, marking an extreme level of exposure. For a detailed look at UV Index trends throughout the year, explore Guimaraes UV Index.

Maximum UV Index Levels in Guimaraes for May

The chart shows the monthly maximum UV Index (UVI) for Guimaraes 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.
JanFebMarAprMayJunJulAugSepOctNovDec24689111098642
Data source: Guimaraes 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 Guimaraes

May in Guimarães, Portugal, is not just the beginning of spring; it's a celebration of sunshine. With 401 hours of glorious daylight, it stands out as a vibrant month brimming with warmth and outdoor opportunities. This delightful increase from 342 hours in April reveals a steady ascent in sunlight that continues into June, where it peaks at 403 hours. As summer approaches, you can feel the energy of the sun rising steadily, creating the perfect backdrop for exploring this historic city. The trend is unmistakable—May offers an inviting allure, as the long, sunlit days set the stage for adventure and relaxation alike, making it a prime time to experience the beauty and culture of Guimarães.

Monthly Sunshine Duration in Guimaraes: May Highlighted

The May sunshine duration represents the total number of hours Guimaraes 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.
JanFebMarAprMayJunJulAugSepOctNovDec153h203h280h342h401h403h427h396h345h300h202h171h
Data source: Guimaraes May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Guimaraes During May

In Guimaraes, Portugal, May offers a moderate 43% chance of sunny weather, which aligns closely with January's 44% and falls just below March's 57%. This marks the transition into sunnier months, as June and July see a notable increase, both boasting a 56% likelihood of sunshine. As summer approaches, the chances of clear skies notably rise, peaking in August with a promising 69%. While May is moderately sunny, the trends indicate that the months following it are more likely to delight residents and visitors with brighter days.

Percentage of Sunny Days in May in Guimaraes

The chart illustrates the percentage of sunny days in Guimaraes 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 Guimaraes experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec44%15%57%37%43%56%56%69%39%45%63%32%
Data source: Guimaraes May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Guimaraes in May

In Guimarães, Portugal, the May daylight duration marks a delightful peak, basking in 14 hours of sunlight, a significant increase from the 9 hours seen in January. As spring unfolds, daylight gradually extends, with March and April enjoying 11 and 13 hours respectively. This upward trend culminates in the summer months, where June reaches a vibrant 15 hours of daylight. As the year progresses, daylight gradually wanes, dropping back to 12 hours in September, and returning to 9 hours by the year's end in November and December. This rhythmic ebb and flow of daylight not only enhances the natural beauty of the region but also encourages outdoor activities throughout the warmer months.

Average Daylight Hours in Guimaraes for May

The chart illustrates the variation in daylight duration in Guimaraes throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 33m10h 36m11h 57m13h 20m14h 30m15h 6m14h 47m13h 45m12h 25m11h 3m9h 50m9h 13m
Data source: Guimaraes daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Guimaraes

In Guimarães, Portugal, May ushers in a gentle breeze with an average wind speed of 2.4 m/s (5 mph). This slight increase from the calmer winds of April, which lingered at 2.1 m/s, hints at the transition towards summer. Following a series of relatively stable wind speeds earlier in the year, May's conditions are notably more consistent with the prevailing patterns seen from late spring to autumn. As summer approaches, the wind tends to be milder yet steady, creating an inviting atmosphere for those wishing to explore this historic city. With temperatures rising and the winds aligning, May in Guimarães becomes an ideal time to enjoy outdoor activities amidst the backdrop of lush greenery and enchanting architecture.

Average May Wind Speed in Guimaraes

The chart displays monthly wind speed patterns in Guimaraes, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.93.02.32.12.4 m/s2.22.21.92.12.32.32.9
Data source: Guimaraes May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Guimaraes Compares to Other Months

The weather in Guimaraes 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 Guimaraes and find detailed weather information for every month.

In comparing the weather of May and January, significant differences in temperature and precipitation become evident. May typically offers a milder climate with temperatures ranging from a minimum of 2°C (36°F) to a maximum of 31°C (89°F), averaging around 16°C (61°F). In contrast, January experiences colder conditions, with temperatures ranging from a minimum of -4°C (25°F) to a maximum of 21°C (70°F) and an average of 7°C (45°F).

Precipitation levels are also noteworthy, with May receiving about 103 mm (4.1 in) over 10 days, while January sees slightly higher precipitation at 132 mm (5.2 in) over 9 days. Additionally, January has a higher humidity level at 87% compared to 78% in May. For further details, you can check Guimaraes weather in January.

When comparing the weather in May and February, it's clear that May tends to be warmer and more variable. In May, temperatures range from a low of 2°C (36°F) to a high of 31°C (89°F), with an average of 16°C (61°F). In contrast, February's temperatures are cooler, ranging from -2°C (28°F) to a maximum of 23°C (73°F), with an average of 10°C (50°F). Additionally, February experiences more precipitation, with 202 mm (7.9 in) over 12 days, compared to May's 103 mm (4.1 in) over 10 days. Humidity levels are slightly higher in February at 81%, compared to May's 78%. For more detailed insights about February, you can check Guimaraes weather in February.

May generally offers warmer temperatures compared to March, with average highs reaching 31°C (89°F) versus March's 25°C (78°F). The minimum temperatures in May also tend to be noticeably higher, starting at 2°C (36°F) compared to March's 0°C (33°F). However, March experiences more precipitation, with 192 mm (7.6 in) over 12 days, while May has 103 mm (4.1 in) over 10 days. Interestingly, both months share the same average humidity level of 78%. For more detailed information on March weather, you can visit Guimaraes weather in March.

When comparing the weather in May and April, notable differences emerge. May generally enjoys a wider temperature range, with minimums of 2°C (36°F), average highs of 16°C (61°F), and maximums reaching up to 31°C (89°F). In contrast, April’s temperatures are slightly cooler, with a minimum of 1°C (34°F) and an average high of 13°C (55°F), peaking at 26°C (80°F). Precipitation levels also vary; May receives 103 mm (4.1 in) over 10 days, while April is wetter, with 170 mm (6.7 in) over 15 days. Humidity remains relatively consistent, with May at 78% and April slightly higher at 79%. For a more detailed look at April weather patterns, you can refer to Guimaraes weather in April.

In comparing the weather of May and June, we notice a gradual shift towards warmer conditions. May experiences temperatures ranging from a chilly 2°C (36°F) at night to a warm 31°C (89°F) during the day, averaging around 16°C (61°F). The month also sees significant precipitation with 103 mm (4.1 inches) over approximately 10 days and a higher humidity level of 78%. In contrast, June brings slightly warmer nights with a minimum temperature of 5°C (42°F) and averages 18°C (64°F), peaking at 34°C (93°F). Precipitation decreases to 65 mm (2.5 inches) over 9 days, and humidity drops to a more comfortable 71%. For a detailed look at June weather specifics, you can visit Guimaraes weather in June.

In May, the weather tends to be cooler and wetter, with temperatures ranging from a minimum of 2°C (36°F) to a maximum of 31°C (89°F) and an average of 16°C (61°F). During this month, residents can expect approximately 103 mm (4.1 in) of precipitation over about 10 days, along with higher humidity levels at 78%. In contrast, July brings warmer and drier conditions; temperatures typically range from a minimum of 7°C (45°F) to a maximum of 35°C (95°F), with an average temperature of 21°C (69°F). Precipitation drops significantly to just 29 mm (1.1 in) over 5 days, and humidity decreases to 63%. For more detailed weather information, you can check out Guimaraes weather in July.

May and August exhibit distinct weather patterns, showcasing a transition from spring to late summer. In May, temperatures range from a cool 2°C (36°F) at night to a warm 31°C (89°F) during the day, with an average of 16°C (61°F). This month also experiences relatively high humidity at 78% and substantial rainfall, with 103 mm (4.1 in) across 10 days. In contrast, August sees milder evenings with a minimum temperature of 9°C (48°F) and a more consistent warm average of 21°C (70°F), peaking at a high of 38°C (101°F). Precipitation in August is notably less, with only 28 mm (1.1 in) falling over just 3 days, and humidity drops to a more comfortable 64%. For a detailed look at weather patterns, you can check out Guimaraes weather in August.

In May, the weather features a broader temperature range with minimums around 2°C (36°F) and maximums reaching up to 31°C (89°F), resulting in an average temperature of 16°C (61°F). This month tends to be quite humid, with an average humidity of 78% and approximately 103 mm (4.1 in) of precipitation over about 10 days. In contrast, September offers warmer average conditions, with temperatures ranging from a minimum of 6°C (43°F) to a maximum of 34°C (93°F), culminating in an average of 19°C (67°F). It also experiences less rainfall—49 mm (1.9 in) during about 6 days—and lower humidity at 71%. For more details on September weather, you can check Guimaraes weather in September.

May and October both feature similar minimum temperatures, starting at 2°C (36°F), but May enjoys a slightly warmer average temperature of 16°C (61°F), while October averages at 15°C (60°F). Both months can reach a maximum temperature of 31°C (89°F), showcasing a warm range. However, October tends to be wetter, with 151 mm (6.0 in) of precipitation over 11 days compared to May’s 103 mm (4.1 in) across 10 days. Humidity levels are also quite close, with October at 79% and May at 78%. For more details about October weather in Guimaraes, you can check Guimaraes weather in October.

In May, the weather is generally warmer, with temperatures ranging from a minimum of 2°C (36°F) to a maximum of 31°C (89°F) and an average of 16°C (61°F). The month experiences around 103 mm (4.1 in) of precipitation over about 10 days, with a humidity level of 78%. In contrast, November brings cooler temperatures, with a minimum of 0°C (33°F) and a maximum of 22°C (72°F), averaging 11°C (52°F). This month sees increased rainfall of 206 mm (8.1 in) spread over 14 days, along with higher humidity at 86%. For more detailed insights into November weather, you can visit Guimaraes weather in November.

When comparing the weather in May and December, a stark contrast emerges. May generally offers a more temperate range, with minimum temperatures around 2°C (36°F) and maximums reaching up to 31°C (89°F), accompanied by an average temperature of 16°C (61°F). In contrast, December experiences colder conditions, with temperatures ranging from a minimum of -2°C (28°F) to a maximum of 18°C (65°F) and an average of just 9°C (49°F). Additionally, December sees significantly more precipitation, totaling 257 mm (10.1 in) over 16 days, compared to May’s 103 mm (4.1 in) across 10 days. The humidity levels are higher in December at 87%, compared to May's 78%, creating a distinctly different atmosphere. For more details, check out Guimaraes weather in December.

Compare Guimaraes's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Guimaraes

As May unfolds in Guimarães, the weather presents a refreshing shift, with temperatures warming up to a balmy peak, making outdoor exploration enticing. While the average sits at a comfortable 16°C, occasional spikes can reach around 31°C, offering perfect days to enjoy the lush greenery and historic architecture. However, the month is not without its share of rain, with about a third of the days experiencing precipitation, contributing to the region’s vibrant landscapes. The high humidity levels often add a tropical feel, distinguishing May from the cooler, drier months that precede it. For a deeper dive into the weather trends throughout the year, visit Guimaraes Climate.