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May Weather in Rosario, Mexico

Last updated: August 27, 2025

In Rosario, Mexico, the average temperature in May is a warm 27°C (80°F). During this time, temperatures can fluctuate between a minimum of 10°C (50°F) and a sizzling maximum of 41°C (107°F). Expect very little rain, with average precipitation at just 1 mm (0.0 in) over 0 days, and enjoy comfortable conditions with an average humidity of 47%.

May Temperature in Rosario

In May in Rosario, the average temperature is 27°C (80°F). Maximum temperatures can reach 41°C (107°F), and minimums can be as low as 10°C (50°F). Be prepared for a wide range of temperatures while traveling, so pack accordingly!

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

The chart illustrates May temperature patterns in Rosario, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rosario, May typically has an average temperature of 27°C (80°F), with highs reaching up to 41°C (107°F) and lows dropping to around 10°C (50°F).
JanFebMarAprMayJunJulAugSepOctNovDec616368758086828280787062
Data source: Temperature data for Rosario 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 Rosario

In Rosario in May, the precipitation amount is 1 mm (0.0 in) during a span of 0 days.

May Precipitation Trends in Rosario

The chart displays monthly precipitation patterns in Rosario, 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 Rosario, May typically receives around 1 mm (0.0 inches) of precipitation spread over approximately 0 days.
JanFebMarAprMayJunJulAugSepOctNovDec272318113313512492254233
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Rosario

In Rosario in May, humidity is 47%. With an average temperature of 27°C (80°F), this humidity feels like a warm embrace, making travelers feel comfortable yet slightly sticky, as the air gently envelops them while exploring the sights.

May Average Humidity in Rosario

This chart illustrates the average monthly humidity levels in Rosario, 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 Rosario is approximately 47%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%67%60%51%47%50%70%82%82%78%78%81%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Rosario

In Rosario in May, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Rosario.

Maximum UV Index Levels in Rosario for May

The chart shows the monthly maximum UV Index (UVI) for Rosario 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 Rosario typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec6810121212121211975
Data source: Rosario 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 Rosario Compares to Other Months

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

This table compares monthly weather conditions in Rosario, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather16°C (61°F)27 mm (1.1 inches)74%high
February Weather17°C (63°F)23 mm (0.9 inches)67%very high
March Weather20°C (68°F)18 mm (0.7 inches)60%very high
April Weather24°C (75°F)1 mm (0.0 inches)51%extreme
May Weather27°C (80°F)1 mm (0.0 inches)47%extreme
June Weather30°C (86°F)33 mm (1.3 inches)50%extreme
July Weather28°C (83°F)135 mm (5.3 inches)70%extreme
August Weather28°C (82°F)124 mm (4.9 inches)81%extreme
September Weather27°C (81°F)92 mm (3.6 inches)82%extreme
October Weather25°C (78°F)25 mm (1.0 inches)78%very high
November Weather21°C (70°F)41 mm (1.6 inches)78%high
December Weather17°C (62°F)33 mm (1.3 inches)80%moderate

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