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May Weather in Mortlake, Australia

Last updated: August 22, 2025

In May, the average temperature in Mortlake, Australia hovers around 11°C (52°F). Expect a chill in the air, with minimum temperatures dipping to 0°C (31°F), while maximums can reach a pleasant 23°C (74°F). Be prepared for some rainfall, as 69 mm (2.7 in) of precipitation is likely over 11 days, contributing to an average humidity level of 80%.

May Temperature in Mortlake

In May in Mortlake, the average temperature is 11°C (52°F). Maximums can reach 23°C (74°F), and minimums can drop as low as 0°C (31°F). This variation in temperature makes it essential to pack layers for your travels, ensuring comfort whether you're exploring during the day or enjoying the cooler evenings.

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

The chart illustrates May temperature patterns in Mortlake, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mortlake, May typically has an average temperature of 11°C (52°F), with highs reaching up to 23°C (74°F) and lows dropping to around 0°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec666463575248474851555962
Data source: Temperature data for Mortlake 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 Mortlake

In Mortlake in May, the total precipitation amount is 69 mm (2.7 in) spread across 11 days.

May Precipitation Trends in Mortlake

The chart displays monthly precipitation patterns in Mortlake, 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 Mortlake, May typically receives around 69 mm (2.7 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec403241516940586969747346
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Mortlake

In Mortlake in May, humidity is 80%. With an average temperature of 11°C (52°F), this humidity feels like a damp blanket wrapping around you, making travel a bit uncomfortable as you navigate through the thick, languid air.

May Average Humidity in Mortlake

This chart illustrates the average monthly humidity levels in Mortlake, 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 Mortlake is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec65%67%71%75%80%80%81%79%76%72%72%69%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Mortlake

In Mortlake 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 Mortlake for better planning.

Maximum UV Index Levels in Mortlake for May

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

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

This table compares monthly weather conditions in Mortlake, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather19°C (67°F)40 mm (1.6 inches)65%extreme
February Weather18°C (64°F)32 mm (1.2 inches)67%extreme
March Weather17°C (63°F)41 mm (1.6 inches)71%extreme
April Weather14°C (58°F)51 mm (2.0 inches)75%high
May Weather11°C (52°F)69 mm (2.7 inches)80%moderate
June Weather9°C (48°F)40 mm (1.6 inches)80%moderate
July Weather9°C (48°F)58 mm (2.3 inches)80%moderate
August Weather9°C (48°F)69 mm (2.7 inches)79%moderate
September Weather10°C (51°F)69 mm (2.7 inches)76%high
October Weather13°C (55°F)74 mm (2.9 inches)72%very high
November Weather15°C (59°F)73 mm (2.9 inches)72%extreme
December Weather17°C (62°F)46 mm (1.8 inches)69%extreme

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