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May Weather in Saint-Denis, Italy

Last updated: August 23, 2025

In May, the average temperature in Saint-Denis, Italy hovers around 4°C (40°F), with a minimum drop to -10°C (15°F) and a maximum rise to 17°C (63°F). Visitors should prepare for some wet weather, as the area receives about 136 mm (5.4 in) of precipitation over 19 days. With an average humidity of 78%, it's essential to dress in layers and carry an umbrella!

May Temperature in Saint-Denis

In May in Saint-Denis, the average temperature is 4°C (40°F), with maximums reaching 17°C (63°F) and minimums dipping as low as -10°C (15°F). For travelers, it’s advisable to pack layers to stay comfortable in the fluctuating temperatures.

May Weather in Saint-Denis: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Saint-Denis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint-Denis, May typically has an average temperature of 4°C (40°F), with highs reaching up to 17°C (63°F) and lows dropping to around -10°C (15°F).
JanFebMarAprMayJunJulAugSepOctNovDec152125323950545346382618
Data source: Temperature data for Saint-Denis 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 Saint-Denis

In Saint-Denis in May, the precipitation amount is 136 mm (5.4 in) over the course of 19 days.

May Precipitation Trends in Saint-Denis

The chart displays monthly precipitation patterns in Saint-Denis, 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 Saint-Denis, May typically receives around 136 mm (5.4 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec9462911021361118610064142136123
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Saint-Denis

In Saint-Denis in May, humidity is 78%. With an average temperature of 4°C (40°F), this humidity feels like a chilly dampness that clings to your skin, making outdoor activities quite uncomfortable and travel less enjoyable as you navigate through the cold, damp air.

May Average Humidity in Saint-Denis

This chart illustrates the average monthly humidity levels in Saint-Denis, 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 Saint-Denis is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%87%84%83%78%75%72%63%73%89%91%90%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Saint-Denis

In Saint-Denis in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Saint-Denis.

Maximum UV Index Levels in Saint-Denis for May

The chart shows the monthly maximum UV Index (UVI) for Saint-Denis 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 Saint-Denis typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24789101097532
Data source: Saint-Denis 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.

How May Weather in Saint-Denis Compares to Other Months

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

This table compares monthly weather conditions in Saint-Denis, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (15°F)94 mm (3.7 inches)91%low
February Weather-6°C (21°F)62 mm (2.4 inches)87%moderate
March Weather-4°C (25°F)91 mm (3.6 inches)84%high
April Weather0°C (32°F)102 mm (4.0 inches)83%very high
May Weather4°C (40°F)136 mm (5.4 inches)78%very high
June Weather10°C (50°F)110 mm (4.3 inches)75%very high
July Weather12°C (54°F)86 mm (3.4 inches)72%very high
August Weather12°C (54°F)100 mm (4.0 inches)63%very high
September Weather8°C (47°F)64 mm (2.5 inches)73%high
October Weather3°C (38°F)142 mm (5.6 inches)89%moderate
November Weather-3°C (27°F)136 mm (5.3 inches)90%moderate
December Weather-8°C (18°F)123 mm (4.8 inches)90%low

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