May Weather in Santarem, Portugal

Last updated: February 24, 2025

In May, Santarem, Portugal experiences a delightful mix of warm temperatures and occasional rainfall. With maximum temperatures soaring to a baking 36°C (96°F), the average settles at a comfortable 18°C (65°F), while nighttime drops can bring refreshing coolness to 7°C (45°F). This month sees about 41 mm (1.6 in) of precipitation over approximately 5 days, contributing to a humidity level of 70% that enhances the region's lush landscape. Whether you're soaking up the sun or enjoying the invigorating breeze, May in Santarem offers an inviting experience for all.

May Temperature in Santarem

In Santarém, Portugal, May heralds the arrival of warmer weather, with temperatures showing a notable upward trend as spring transitions into summer. The month kicks off with a minimum temperature of 7°C (45°F), gradually rising to an impressive maximum of 36°C (96°F). On average, locals and visitors can expect a delightful 18°C (65°F), making it an ideal time for outdoor activities and exploration. This significant shift from the cooler months emphasizes the region's increasingly warm climate, as May serves as a precursor to the sweltering heat of June and July. The pleasant temperatures not only invite leisure but also offer a vibrant backdrop for enjoying Santarém's rich history and scenic beauty.

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

The chart illustrates May temperature patterns in Santarem, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec495456596568717270655653
Data source: Temperature data for Santarem 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 Santarem

May in Santarem, Portugal sees a moderate precipitation total of 41 mm (1.6 in), spread over an average of 5 days. This marks a noticeable decrease compared to the previous month, April, which recorded a wetter 86 mm (3.4 in) over 11 days. As spring progresses, the rainfall in May tends to be lighter and less frequent, hinting at a transition towards the drier summer months ahead. This trend is further emphasized in June, where precipitation plummets to just 15 mm (0.6 in). Overall, May represents a delicate balance as the landscape enjoys one last flourish of spring moisture before the summer heat begins to settle in.

May Precipitation Trends in Santarem

The chart displays monthly precipitation patterns in Santarem, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3854808641154627568959
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Santarem

In May, Santarem, Portugal experiences a comfortable humidity level of 70%, maintaining the relatively low trend set by the months prior. Following the wetter winter months, where humidity peaks at 85% in January and 83% in November, the spring air begins to dry out, marking a transition into the warmer summer ahead. The gradual decline from 85% in January to 63% by June highlights this shift, while May's levels echo a vibrant, refreshing atmosphere, ideal for outdoor activities. As temperatures rise and humidity decreases, visitors can expect a pleasant blend of warmth and comfort, making May a delightful month to explore the charming landscapes of Santarem.

May Average Humidity in Santarem

This chart illustrates the average monthly humidity levels in Santarem, 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.
JanFebMarAprMayJunJulAugSepOctNovDec85%75%72%70%70%63%60%60%68%74%83%85%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Santarem

In May, Santarem, Portugal experiences a very high UV Index of 10, indicating that sun exposure is significantly intensified, with a burn time of just 15 minutes. This trend towards increased UV intensity is consistent as we move from April's UV Index of 9 to June's peak of 11. As the summer months approach, it's crucial for residents and visitors alike to prioritize sun safety measures, such as wearing protective clothing and applying sunscreen regularly. The seasonal progression from moderate to extreme exposure clearly highlights the need for caution in outdoor activities. For more detailed insight into UV conditions throughout the year, visit Santarem UV Index.

Maximum UV Index Levels in Santarem for May

The chart shows the monthly maximum UV Index (UVI) for Santarem 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.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098643
Data source: Santarem 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 Santarem

In May, Santarem, Portugal, basks in a delightful 407 hours of sunshine, making it one of the sunniest months of the year. The upward trend in sunlight is evident as the days stretch longer and brighter, with each month leading up to May witnessing a steady increase—from 178 hours in January to 347 hours in April. This pattern of more sunshine continues into June and July, peaking at 420 hours in July, suggesting that May serves as a beautiful prelude to the summer months ahead. With the sun shining more generously, it's the perfect time to explore the vibrant landscapes and rich history that Santarem has to offer, inviting residents and visitors alike to indulge in the joys of outdoor activities and leisurely strolls under the warm, golden rays.

Monthly Sunshine Duration in Santarem: May Highlighted

The May sunshine duration represents the total number of hours Santarem 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.
JanFebMarAprMayJunJulAugSepOctNovDec178h219h297h347h407h406h420h395h347h310h224h210h
Data source: Santarem May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Santarem During May

In Santarem, Portugal, May offers a moderate likelihood of sunny weather, with a 53% chance of sunshine. This marks an improvement from the previous months, such as April's 33%. As the region transitions into summer, the trend is clear: the likelihood of sun begins to climb, peaking in the height of summer with July and August reaching 74% and 75%, respectively. May stands out as a transitional month, where the promise of warmth is felt as spring gives way to the brighter days ahead. This gradual increase in sunshine is a beacon for those eager to enjoy the blooming landscapes and outdoor activities that Santarem has to offer.

Percentage of Sunny Days in May in Santarem

The chart illustrates the percentage of sunny days in Santarem 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 Santarem experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec49%20%59%33%53%64%74%75%55%53%67%39%
Data source: Santarem May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Santarem in May

As spring transitions into summer, May heralds a delightful increase in daylight duration in Santarem, Portugal, offering a generous 14 hours of sunlight. This month stands out as a peak in luminosity, mirroring the extended daylight of the following months, June and July. The trend is clear: as winter recedes with its mere 9 hours of daylight in January, each subsequent month steadily gains hours of light, culminating in the sun-drenched vibrancy of late spring and early summer. As the year wanes, daylight gently tapers off again, descending back to 10 hours by November and returning full circle to 9 hours in December. This rhythmic ebb and flow of daylight not only enhances the beauty of the landscape but also invigorates the spirit, inviting both residents and visitors to embrace the full bloom of the season.

Average Daylight Hours in Santarem for May

The chart illustrates the variation in daylight duration in Santarem throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 44m10h 43m11h 58m13h 15m14h 20m14h 52m14h 35m13h 37m12h 24m11h 7m10h9h 26m
Data source: Santarem daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Santarem

In May, Santarem experiences a noticeable increase in wind activity, with average wind speeds reaching 4.1 m/s (9 mph). This upward trend marks a shift from the calmer breezes of earlier months, such as April, where speeds dipped to 2.6 m/s (6 mph). Following May, the winds remain consistent, with June also recording an average of 4.1 m/s. As the summer approaches, July sees the strongest winds of the year at 4.7 m/s (10 mph), creating a dynamic and invigorating atmosphere. This pattern suggests that May serves as a transitional month, paving the way for the lively gusts of summer while maintaining a refreshing breeze that enhances the charm of Santarem's spring season.

Average May Wind Speed in Santarem

The chart displays monthly wind speed patterns in Santarem, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.53.73.32.64.1 m/s4.14.74.13.33.13.23.9
Data source: Santarem May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Santarem Compares to Other Months

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

May and January exhibit contrasting weather patterns. In May, temperatures typically range from a low of 7°C (45°F) to a high of 36°C (96°F), with an average of 18°C (65°F). The month experiences moderate precipitation of 41 mm (1.6 in) over about five days and a humidity level of 70%. In contrast, January is significantly cooler, with temperatures ranging from a minimum of -3°C (26°F) to a maximum of 21°C (69°F), averaging at 10°C (50°F). Precipitation during this month is slightly lower at 38 mm (1.5 in), also spread over five days, but the humidity is higher at 85%. For more detailed weather information, check Santarem weather in January.

May and February present quite contrasting weather conditions. In May, temperatures rise significantly, with a minimum of 7°C (45°F) and an average of 18°C (65°F), peaking at a warm 36°C (96°F). This month experiences less precipitation, with 41 mm (1.6 in) spread over about 5 days, alongside a humidity level of 70%. In contrast, February has cooler temperatures, ranging from a minimum of 1°C (33°F) to an average of 12°C (54°F) and a maximum of 25°C (77°F). It also sees slightly more rainfall, totaling 54 mm (2.1 in) over about 7 days, with humidity levels at 75%. For more detailed information on February weather, you can visit Santarem weather in February.

May typically presents warmer weather compared to March, with average temperatures rising from a mild 13°C (56°F) in March to a more pleasant 18°C (65°F) in May. The temperature highs in May can reach up to 36°C (96°F), while March peaks at a more moderate 28°C (82°F). However, May sees less precipitation, averaging only 41 mm (1.6 in) over 5 days, compared to March's 80 mm (3.1 in) over 8 days. The humidity levels are quite similar in both months, with May at 70% and March at 72%, indicating that while May is generally warmer, March tends to be wetter. For more details on March weather patterns, you can check Santarem weather in March.

In comparing the weather in May to that of April, we see a notable increase in average temperatures, with May averaging 18°C (65°F) compared to April’s 15°C (59°F). The minimum temperature in May is slightly warmer at 7°C (45°F) versus 5°C (41°F) in April, while the maximum temperature can reach a hotter 36°C (96°F) in May compared to 30°C (86°F) in April. However, April experiences significantly more rainfall, with 86 mm (3.4 in) over 11 days, overshadowing May’s 41 mm (1.6 in) over just 5 days, although both months maintain the same humidity level of 70%. For more details on April weather, check Santarem weather in April.

In May, temperatures range from a minimum of 7°C (45°F) to a maximum of 36°C (96°F), with an average temperature of 18°C (65°F). The month sees approximately 41 mm (1.6 in) of precipitation over 5 days, coupled with a humidity level of 70%. In contrast, June experiences warmer temperatures, with a minimum of 10°C (50°F) and a maximum of 41°C (106°F), leading to an average of 20°C (68°F). Precipitation decreases significantly to 15 mm (0.6 in) over just 4 days, and humidity drops to 63%. This transition from May to June indicates a shift towards hotter and drier conditions. For more details, visit Santarem weather in June.

May and July offer distinct weather experiences. In May, temperatures range from a cool minimum of 7°C (45°F) to a maximum of 36°C (96°F), with an average of 18°C (65°F). The month sees about 41 mm (1.6 in) of precipitation over five days, accompanied by a higher humidity level of 70%. In contrast, July boasts warmer conditions, with minimum temperatures of 13°C (56°F) and maximums reaching up to 40°C (104°F). The average temperature rises to 22°C (72°F), while precipitation significantly decreases to just 3 mm (0.1 in) over a single day, and humidity drops to 60%. For more details, you can check Santarem weather in July.

May and August present distinct weather profiles, with May showcasing a broader temperature range that includes cooler lows of 7°C (45°F) and the potential for highs reaching 36°C (96°F). This month experiences more precipitation, averaging 41 mm (1.6 in) over five days, resulting in a relatively humid atmosphere at 70%. In contrast, August tends to be warmer, with minimum temperatures starting at 13°C (56°F) and average highs soaring to 43°C (110°F). Significantly drier, August records only 6 mm (0.2 in) of rain across just one day and lower humidity at 60%. For more detailed insights on the August climate, you can visit Santarem weather in August.

When comparing the weather in May and September, we see some notable differences. May starts with cooler temperatures, ranging from a minimum of 7°C (45°F) to a maximum of 36°C (96°F), while enjoying an average temperature of 18°C (65°F). It also experiences slightly higher humidity at 70% and more precipitation, averaging 41 mm over about 5 days. In contrast, September brings a warmer climate, with minimum temperatures of 11°C (51°F) and an average of 21°C (71°F), peaking at 37°C (98°F). This month sees reduced precipitation at 27 mm across just 3 days and a slightly lower humidity level of 67%. For those interested in more details on September's weather, check out this link: Santarem weather in September.

When comparing the weather in May and October, we find that both months feature similar average temperatures, hovering around 18°C (65°F). However, May typically experiences slightly higher minimum and maximum temperatures, ranging from 7°C (45°F) to 36°C (96°F), while October sees similar minimums at 6°C (44°F) and slightly warmer maximums at 36°C (97°F). In terms of precipitation, October has a bit more rain, totaling 55 mm (2.2 in) compared to May's 41 mm (1.6 in), with both months exhibiting precipitation over five days. Additionally, October tends to be slightly more humid with a humidity level of 74%, compared to May’s 70%. For a more detailed look at October weather, you can refer to Santarem weather in October.

May and November present contrasting weather patterns. In May, temperatures range from a cool 7°C (45°F) to a warm 36°C (96°F), with an average of 18°C (65°F). The month experiences less rainfall, totaling 41 mm (1.6 in) over approximately five days, and humidity levels are around 70%. In contrast, November brings cooler temperatures, with a minimum of 3°C (38°F) and an average of 13°C (56°F), peaking at 25°C (78°F). This month sees increased rainfall, accumulating 89 mm (3.5 in) over about ten days and higher humidity at 83%. For more detailed information, you can check Santarem weather in November.

May and December present strikingly different weather conditions. In May, temperatures range from a mild 7°C (45°F) at night to a warm 36°C (96°F) during the day, with an average temperature of 18°C (65°F). While May experiences lower precipitation, totaling 41 mm (1.6 in) over just 5 days, humidity sits at a comfortable 70%. In contrast, December brings chillier temperatures, with a minimum of -2°C (28°F) and an average of 11°C (53°F), peaking at around 20°C (68°F). This month also sees increased rainfall, with 59 mm (2.3 in) spread over 8 days and higher humidity levels at 85%. For more details on December weather, check out Santarem weather in December.

Compare Santarem's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Santarem

As May unfolds in Santarem, the weather showcases a delightful transition into warmer days, with temperatures rising significantly compared to the cooler months that precede it. The month boasts an inviting average warmth, contrasting with the chill of early spring, yet it still retains a hint of briskness with the occasional drop in temperature. While May introduces a touch of summer with its maximums nearing 36°C, it also embraces the lingering freshness of spring, evident in both the mild nights and the necessary precipitation that nurtures the landscape. With humidity levels hovering around 70%, the air carries a vibrant, invigorating energy. For an in-depth understanding of how Santarem's climate evolves throughout the year, consider exploring Santarem Climate.