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May Weather in Sidney, United States

Last updated: June 24, 2025

In May, the average temperature in Sidney, United States hovers around 17°C (63°F). Expect a temperature range that can dip as low as -1°C (30°F) and soar up to 33°C (91°F). With an average precipitation of 125 mm (4.9 in) spread over 15 days and an average humidity of 81%, be prepared for some wet and humid days.

May Temperature in Sidney

In May in Sidney, the average temperature is 17°C (63°F). The maximum can reach 33°C (91°F), while the minimum can drop as low as -1°C (30°F). Be prepared for a wide range of temperatures if you plan to travel during this time.

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

The chart illustrates May temperature patterns in Sidney, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sidney, May typically has an average temperature of 17°C (63°F), with highs reaching up to 33°C (91°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec303342516372767369574136
Data source: Temperature data for Sidney 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 Sidney

In Sidney in May, the precipitation amount is 125 mm (4.9 in) over a span of 15 days.

May Precipitation Trends in Sidney

The chart displays monthly precipitation patterns in Sidney, 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 Sidney, May typically receives around 125 mm (4.9 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec7297103101126121105100781018978
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Sidney

In Sidney in May humidity is 81%. With an average temperature of 17°C (63°F), this humidity feels like a warm blanket enveloping you, making travel slightly oppressive and calling for frequent breaks in air-conditioned spaces to recharge and enjoy your journey comfortably.

May Average Humidity in Sidney

This chart illustrates the average monthly humidity levels in Sidney, 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 Sidney is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%87%88%81%82%81%78%78%82%89%86%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Sidney

In Sidney in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Sidney.

Maximum UV Index Levels in Sidney for May

The chart shows the monthly maximum UV Index (UVI) for Sidney 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 Sidney typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
Data source: Sidney 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 Sidney Compares to Other Months

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

This table compares monthly weather conditions in Sidney, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)72 mm (2.8 inches)88%moderate
February Weather0°C (33°F)97 mm (3.8 inches)87%moderate
March Weather5°C (42°F)103 mm (4.0 inches)87%high
April Weather11°C (51°F)101 mm (4.0 inches)87%very high
May Weather17°C (63°F)125 mm (4.9 inches)81%very high
June Weather22°C (72°F)121 mm (4.8 inches)82%very high
July Weather24°C (76°F)105 mm (4.1 inches)81%very high
August Weather23°C (73°F)100 mm (3.9 inches)78%very high
September Weather20°C (69°F)78 mm (3.1 inches)78%very high
October Weather14°C (57°F)101 mm (4.0 inches)82%high
November Weather5°C (42°F)89 mm (3.5 inches)89%moderate
December Weather2°C (36°F)78 mm (3.1 inches)86%low

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