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May Weather in Casterton, Australia

Last updated: August 22, 2025

In Casterton, Australia, the average temperature in May hovers around 11°C (52°F). You can expect temperatures to range from a chilly 0°C (32°F) to a warm 24°C (75°F). During this month, precipitation averages around 67 mm (2.7 in) over approximately 11 days, accompanied by an average humidity level of 75%.

May Temperature in Casterton

In May in Casterton, the average temperature is 11°C (52°F). Maximums can reach 24°C (75°F), and minimums can drop to as low as 0°C (32°F). Be prepared for a range of temperatures to make the most of your travels.

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

The chart illustrates May temperature patterns in Casterton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Casterton, May typically has an average temperature of 11°C (52°F), with highs reaching up to 24°C (75°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec686564585248474851545963
Data source: Temperature data for Casterton 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 Casterton

In Casterton in May, the total precipitation amount is 67 mm (2.7 in) spread over a duration of 11 days.

May Precipitation Trends in Casterton

The chart displays monthly precipitation patterns in Casterton, 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 Casterton, May typically receives around 67 mm (2.7 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec262323376844737366635735
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Casterton

In Casterton in May, humidity is 75%. With an average temperature of 11°C (52°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration a little less inviting and prompting the need for warm layers.

May Average Humidity in Casterton

This chart illustrates the average monthly humidity levels in Casterton, 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 Casterton is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec45%49%57%67%75%79%80%75%69%59%56%50%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Casterton

In Casterton in May, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Casterton for better planning.

Maximum UV Index Levels in Casterton for May

The chart shows the monthly maximum UV Index (UVI) for Casterton 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 Casterton typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec14121174335791214
Data source: Casterton 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 Casterton Compares to Other Months

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

This table compares monthly weather conditions in Casterton, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather20°C (68°F)26 mm (1.0 inches)45%extreme
February Weather18°C (65°F)23 mm (0.9 inches)49%extreme
March Weather18°C (64°F)23 mm (0.9 inches)57%extreme
April Weather14°C (58°F)37 mm (1.5 inches)67%high
May Weather11°C (52°F)67 mm (2.7 inches)75%moderate
June Weather9°C (48°F)44 mm (1.7 inches)79%moderate
July Weather8°C (47°F)73 mm (2.9 inches)80%moderate
August Weather9°C (48°F)73 mm (2.9 inches)75%moderate
September Weather10°C (51°F)66 mm (2.6 inches)69%high
October Weather12°C (55°F)63 mm (2.5 inches)59%very high
November Weather15°C (60°F)57 mm (2.3 inches)56%extreme
December Weather17°C (63°F)35 mm (1.4 inches)50%extreme

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