May Weather in San Marino, Italy

Last updated: March 24, 2025

May in San Marino, Italy offers a vibrant transition into summer, characterized by a maximum temperature soaring to 33°C (91°F) while maintaining an average of 19°C (66°F). With a cool minimum dipping to 6°C (44°F), visitors can experience a delightful range of temperatures. However, the month also brings about significant precipitation, accumulating to 100 mm (3.9 in) over 14 days, contributing to a humidity level of approximately 70%. This blend of warmth and moisture presents a unique charm, with blooming landscapes and a refreshing atmosphere, making it an ideal time to explore this historic enclave.

May Temperature in San Marino

In May, temperatures in San Marino transition into the warmth of spring, offering a delightful mix of mild and sunny days. With minimums around 6°C (44°F) and average highs reaching 33°C (91°F), this month marks a notable jump from the cool April temperatures. The landscape transforms as the average temperature settles at a comfortable 19°C (66°F), perfect for exploring the charming streets and stunning views of this historic city. As daytime warms up, the vibrant colors of blooming flowers enhance the beauty of San Marino, inviting both locals and visitors to embrace the outdoors and enjoy the rich cultural tapestry that unfolds under the bright May sun.

May Weather in San Marino: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in San Marino, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec394550576676798070605142
Data source: Temperature data for San Marino 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 San Marino

May marks a significant shift in San Marino's precipitation landscape, as the region experiences 100 mm (3.9 in) of rainfall over 14 days, making it one of the wettest months of the year. This sharp increase from 55 mm in April not only signals the arrival of more frequent showers but also highlights the transition into the lush spring season. As the month unfolds, May’s precipitation typically awakens the vibrant flora, painting the hillsides in rich greens and colorful blooms. This upward trend in rainfall foreshadows a bustling natural environment, contrasting the relatively drier months of February and March, while still preceding the milder, yet sporadic rains of summer. Overall, May embodies a pivotal moment of renewal, where water breathes life back into the landscape, setting the stage for the warmer months ahead.

May Precipitation Trends in San Marino

The chart displays monthly precipitation patterns in San Marino, 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.
JanFebMarAprMayJunJulAugSepOctNovDec23734655100446848846210967
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in San Marino

May in San Marino showcases a comfortable humidity level of 70%, slightly higher than the preceding months of April and March, which recorded 71% and 69% respectively. This trend highlights the transition from the cooler months to the warmer summer season, as humidity levels begin their gradual decline from April's peak. Following May, a steady drop to 65% in June indicates the onset of summer, where the crispness in the air becomes more pronounced. Overall, May serves as a pleasant midpoint in the yearly humidity cycle, providing visitors and locals alike with mild conditions before the summer heat fully sets in.

May Average Humidity in San Marino

This chart illustrates the average monthly humidity levels in San Marino, 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%79%69%71%70%65%61%54%66%83%88%85%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in San Marino

In May, San Marino experiences a notable uptick in UV intensity, reaching a UV Index of 8, which falls into the very high exposure category. This marks a significant increase from the previous months, reflecting the approach of summer. With an estimated burn time of just 15 minutes, it’s crucial for residents and visitors alike to prioritize sun protection during this month. This trend of escalating UV levels leads into a peak in June and July, where indices remain at a staggering 9, emphasizing the need for vigilance as outdoor activities become more common. For those planning to soak up the sun in this historical enclave, understanding these UV trends is vital—learn more about the UV levels throughout the year at San Marino UV Index.

Maximum UV Index Levels in San Marino for May

The chart shows the monthly maximum UV Index (UVI) for San Marino 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.
JanFebMarAprMayJunJulAugSepOctNovDec235789987532
Data source: San Marino 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 San Marino

May in San Marino is a radiant month that truly marks the arrival of warmth and light, boasting an impressive 389 hours of sunshine. This is a significant leap from 346 hours in April, signaling the transition into the height of spring. As daylight increases, so does the vibrancy of the landscape, inviting visitors to explore its charming streets and stunning vistas. The trend of growing sunshine hours continues into June and July, peaking at 428 hours, showcasing San Marino as a sun-drenched destination during the summer months. This delightful shift towards longer days not only enhances the beauty of the surroundings but also uplifts the spirit, making May an ideal time to experience the rich culture and history of this enchanting location.

Monthly Sunshine Duration in San Marino: May Highlighted

The May sunshine duration represents the total number of hours San Marino 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.
JanFebMarAprMayJunJulAugSepOctNovDec181h224h313h346h389h421h428h398h338h301h220h218h
Data source: San Marino May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in San Marino During May

In May, San Marino experiences a 49% chance of sunny weather, marking a slight uptick from the cooler months of April (47%) and a significant leap in optimism compared to the winter months, such as January (38%) and February (44%). As spring unfolds, the likelihood of sunny days grows, evidenced by the transition to a more favorable climate in March (69%), yet May remains somewhat tempered before the summer peak. Following this trend, June (61%) and July (54%) promise even brighter prospects, making May a delightful time for outdoor activities, even if cloud cover might linger. Overall, while sunshine isn't guaranteed, May starts to suggest a warm embrace of summer, setting the stage for the delightful days ahead.

Percentage of Sunny Days in May in San Marino

The chart illustrates the percentage of sunny days in San Marino 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 San Marino experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec38%44%69%47%49%61%54%62%55%45%29%44%
Data source: San Marino May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in San Marino in May

As spring blossoms into summer, San Marino experiences a delightful increase in daylight duration, especially noticeable in May. With 14 hours of daylight, May represents a significant leap from April's 13 hours, signaling the arrival of longer, sun-filled days that invite outdoor activities and vibrant community gatherings. This upward trend continues into June and July, peaking at 15 hours, before gradually tapering off in the early fall months. The transition from the shorter days of winter, where January only boasts 9 hours of daylight, highlights the region's seasonal rhythm, making the lengthy days of May a cherished time for both residents and visitors to bask in the warmth of the sun.

Average Daylight Hours in San Marino for May

The chart illustrates the variation in daylight duration in San Marino throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 15m10h 26m11h 56m13h 29m14h 48m15h 28m15h 7m13h 57m12h 28m10h 56m9h 35m8h 52m
Data source: San Marino daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in San Marino

In San Marino, the month of May marks a notable uptick in wind activity, with average speeds reaching 2.9 m/s (7 mph)—the highest recorded for the year. This gentle increase from April's 2.4 m/s not only signifies a transition into warmer months but also enhances the region's picturesque beauty, as breezes dance through its historic streets and scenic landscapes. Following May, a slight decrease is observed in June and July, where winds return to a more modest 2.2 m/s (5 mph). This brief surge in wind activity during May encapsulates the vibrant essence of spring in San Marino, offering a refreshing backdrop for outdoor exploration before summer settles in.

Average May Wind Speed in San Marino

The chart displays monthly wind speed patterns in San Marino, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.22.12.22.42.9 m/s2.22.12.41.82.32.21.7
Data source: San Marino May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in San Marino Compares to Other Months

The weather in San Marino 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 San Marino and find detailed weather information for every month.

May and January present stark contrasts in weather conditions. In May, temperatures range from a minimum of 6°C (44°F) to a maximum of 33°C (91°F), with an average of 19°C (66°F). This month typically experiences about 100 mm (3.9 in) of precipitation over approximately 14 days, coupled with a moderate humidity level of 70%. Conversely, January brings much colder temperatures, with a minimum of -6°C (21°F) and a maximum of 15°C (60°F), averaging just 4°C (40°F). The precipitation is significantly lower at 23 mm (0.9 in) over about 4 days, but humidity is higher at 87%. For more detailed information, you can visit San Marino weather in January.

May and February present contrasting weather patterns. In May, temperatures see a significant rise, with minimums around 6°C (44°F) and maximums reaching up to 33°C (91°F), averaging at a pleasant 19°C (66°F). This month experiences considerable rainfall, with about 100 mm (3.9 in) over approximately 14 days, accompanied by a relative humidity of 70%. In contrast, February is much colder, with temperatures ranging from a minimum of -9°C (16°F) to a maximum of 21°C (70°F), resulting in a lower average of 7°C (45°F). February also sees less precipitation, totaling 73 mm (2.9 in) over 9 days, and a slightly higher humidity of 79%. For more details on February weather, you can visit San Marino weather in February.

In comparing the weather in May and March, we see a significant transition as spring progresses into early summer. May boasts a much warmer average temperature of 19°C (66°F), with highs reaching up to 33°C (91°F), while March has a cooler average of just 10°C (50°F), peaking at 25°C (77°F). Additionally, May experiences more frequent precipitation, with about 100 mm (3.9 in) falling over 14 days, compared to March's 46 mm (1.8 in) across 7 days. Humidity levels are fairly similar, hovering around 70% in May and 69% in March. For a more detailed look into March weather, you can check San Marino weather in March.

In comparing the weather between April and May, we notice a significant warming trend as spring progresses. In April, temperatures range from a chilly minimum of -1°C (30°F) to a comfortable maximum of 28°C (82°F), while May brings much warmer conditions with lows of 6°C (44°F) and highs reaching up to 33°C (91°F). Precipitation also increases in May, with 100 mm (3.9 in) recorded over 14 days, compared to April's 55 mm (2.2 in) over just 8 days. Although humidity levels are similar, with April at 71% and May at 70%, May's warmer temperatures and higher precipitation reflect a transition into more typical summer-like weather. For more specific insights, you can explore San Marino weather in April.

May and June exhibit distinct weather patterns, reflecting the transition from spring to summer. In May, temperatures range from a cool 6°C (44°F) at night to a warm 33°C (91°F) during the day, with an average temperature of 19°C (66°F). The month sees significant rainfall, with 100 mm (3.9 in) of precipitation over 14 days, contributing to a higher humidity level of 70%. In contrast, June experiences milder lows of 12°C (54°F) and peak temperatures reaching an intense 40°C (104°F), averaging around 25°C (76°F). With only 43 mm (1.7 in) of rain falling over 7 days and a drop in humidity to 65%, June offers a drier and overall warmer climate. For more detailed information about weather conditions in June, visit San Marino weather in June.

In May, the weather is characterized by a broader temperature range, with minimums around 6°C (44°F) and maximums reaching up to 33°C (91°F), averaging 19°C (66°F). It tends to be more humid, with humidity levels around 70% and significant precipitation averaging 100 mm (3.9 in) over 14 days. In contrast, July offers significantly warmer temperatures, with minimums of 16°C (61°F) and maximums soaring to 38°C (101°F), averaging 26°C (80°F). The humidity decreases to 61%, and precipitation is less frequent, totaling only 68 mm (2.7 in) over 8 days. For more details, check out San Marino weather in July.

The weather in May is characterized by a broader temperature range, with minimums around 6°C (44°F) and maximums peaking at 33°C (91°F), making for an average of 19°C (66°F). This month also experiences higher precipitation, averaging 100 mm (3.9 inches) over 14 days, accompanied by a humidity level of 70%. In contrast, August sees warmer temperatures, with minimums at 13°C (55°F) and maximums soaring to 41°C (106°F), yielding an average of 26°C (80°F). Rainfall in August is significantly less, at 48 mm (1.9 inches) over just 7 days, and the humidity drops to a more comfortable 54%. For a more detailed comparison, you can explore San Marino weather in August.

In May, the weather exhibits a wider range of temperatures, with a minimum of 6°C (44°F) and a maximum of 33°C (91°F), resulting in an average of 19°C (66°F). This month experiences around 100 mm (3.9 in) of rainfall spread over 14 days and maintains a humidity level of 70%. In contrast, September offers slightly warmer conditions, featuring a minimum temperature of 7°C (45°F) and a maximum of 34°C (94°F), leading to an average of 21°C (70°F). September typically sees less precipitation, with about 84 mm (3.3 in) over just 10 days and a lower humidity of 66%. For more details on September weather patterns, you can visit San Marino weather in September.

May and October present distinct shifts in weather patterns. In May, temperatures can soar with a maximum of 33°C (91°F) and an average of 19°C (66°F), though it can still dip to a minimum of 6°C (44°F). Rainfall is more frequent during this month, with precipitation occurring on about 14 days and totaling 100 mm (3.9 in). In contrast, October sees cooler temperatures, with an average of 16°C (60°F) and a maximum of 28°C (82°F), while the minimum drops slightly to 5°C (41°F). The month is characterized by less precipitation, totaling 61 mm (2.4 in) over 8 days, but comes with higher humidity levels of 83%. For more detailed information, check out San Marino weather in October.

May and November showcase a stark contrast in weather. May tends to be warmer, with average temperatures ranging from a minimum of 6°C (44°F) to a maximum of 33°C (91°F), while November's temperatures are cooler, with averages spanning from -2°C (29°F) to 21°C (70°F). Precipitation levels are fairly comparable; May receives about 100 mm (3.9 in) over 14 days, while November has slightly more at 109 mm (4.3 in) across 11 days. Furthermore, November experiences higher humidity at 88% compared to May's 70%, contributing to a different feel in the air. For more details, check San Marino weather in November.

May and December present a stark contrast in weather conditions. May typically offers a warm atmosphere, with average temperatures reaching 19°C (66°F) and highs of 33°C (91°F), making it a much sunnier month compared to December's cooler climate that averages only 6°C (42°F) and peaks at 17°C (62°F). Additionally, May experiences more rainfall, totaling around 100 mm (3.9 in) over 14 days, while December has a moderate 67 mm (2.7 in) of precipitation over just 10 days. Humidity levels are also notable, with May at 70% compared to December's higher 85%. For more details on December weather, you can visit San Marino weather in December.

Compare San Marino's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in San Marino

As spring blossoms into May, San Marino experiences a delightful transition in weather marked by warmer temperatures and increased humidity compared to earlier months. With maximum temperatures occasionally reaching as high as 33°C (91°F), the warmth invites both locals and visitors to embrace outdoor activities. However, don’t forget your umbrella, as this month also sees a fair amount of precipitation, with rainfall occurring on about 14 days. The lush landscapes are nourished, balancing the warmth with the fresh, crisp air that characterizes late spring. For those planning a visit, the charm of May in San Marino is enriched by its unique climate, making it a fantastic time to explore all that this beautiful country has to offer. For more detailed weather insights, check out San Marino Climate.