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August Weather in Sidney, United States

Last updated: June 24, 2025

In Sidney, United States, the average temperature in August is a comfortable 21°C (70°F). However, be prepared for a range, as temperatures can dip to a chilly 7°C (45°F) or soar up to a sizzling 40°C (103°F). You'll also want to pack an umbrella, as the region experiences an average precipitation of 39 mm (1.5 in) over 6 days. With an average humidity of 74%, the weather is sure to keep things interesting!

August Temperature in Sidney

In August in Sidney, the average temperature is 21°C (70°F), with highs reaching 40°C (103°F) and lows dropping to 7°C (45°F). It's a great time to travel for those who enjoy warm weather but should be prepared for some cooler evenings.

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

The chart illustrates August 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, August typically has an average temperature of 21°C (70°F), with highs reaching up to 40°C (103°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec171330405567737059433122
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.

August Precipitation in Sidney

In Sidney in August, the precipitation amount is 39 mm (1.5 in), occurring over the course of 6 days.

August Precipitation Trends in Sidney

The chart displays monthly precipitation patterns in Sidney, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Sidney, August typically receives around 39 mm (1.5 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec102221255367383960301918
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Sidney

In Sidney in August humidity is 74%. With an average temperature of 21°C (70°F), this humidity feels like a warm, moist embrace, making outdoor activities both invigorating and slightly draining, so travelers should stay hydrated and take breaks often.

August Average Humidity in Sidney

This chart illustrates the average monthly humidity levels in Sidney, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Sidney is approximately 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%86%77%72%77%79%78%74%68%70%80%84%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Sidney

In Sidney in August, 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 Sidney.

Maximum UV Index Levels in Sidney for August

The chart shows the monthly maximum UV Index (UVI) for Sidney in August, 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 August, the maximum UV index in Sidney typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24598101097532
Data source: Sidney August 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 August 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 August’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 August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (17°F)10 mm (0.4 inches)83%low
February Weather-11°C (13°F)22 mm (0.8 inches)86%moderate
March Weather-1°C (31°F)21 mm (0.8 inches)77%moderate
April Weather5°C (41°F)25 mm (1.0 inches)72%very high
May Weather13°C (55°F)53 mm (2.1 inches)77%very high
June Weather19°C (67°F)67 mm (2.6 inches)79%very high
July Weather23°C (73°F)38 mm (1.5 inches)78%very high
August Weather21°C (70°F)39 mm (1.5 inches)74%very high
September Weather15°C (60°F)60 mm (2.3 inches)68%high
October Weather6°C (43°F)30 mm (1.2 inches)70%moderate
November Weather-1°C (31°F)19 mm (0.7 inches)80%moderate
December Weather-6°C (22°F)18 mm (0.7 inches)84%low

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