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Saint Marys Weather and Climate: A Comprehensive Guide

The weather in Saint Marys sees moderate temperature fluctuations over the course of a year. Temperatures can be pleasant at the high end to roughly mild at the low end. It receives a reasonable amount of rainfall. Now, let’s explore all the climate details to give you a full picture.

Average maximum day and minimum night temperature

The weather in Saint Marys changes moderately throughout the year, offering enough variation to appreciate each season. Average daytime temperatures reach a pleasant 20°C in January. In August, the coolest month of the year, temperatures drop to a moderate 12°C.

At night, you can expect cooler temperatures, with averages dropping to around 7°C during this month. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

On average, Saint Marys receives a reasonable amount of rainfall, with an annual precipitation of 765 mm. Saint Marys experiences moderate seasonal variation in rainfall, with monthly averages ranging from 83 mm in November, the wettest month, and 40 mm in May, the driest month.

The mean monthly precipitation over the year, including rain, hail and snow

Forecast for Saint Marys

Wed   Jan 15
21°C | 13°C
NE 6 m/s
15 mm
overcast and heavy rain

overcast and heavy rain

Thu   Jan 16
22°C | 10°C
SW 4 m/s
1.6 mm
almost clear and small chance of slight rain

almost clear and small chance of slight rain

Fri   Jan 17
21°C | 9°C
SE 6 m/s
0.8 mm
partly cloudy and  chance of rain

partly cloudy and chance of rain

Select a Month of Interest

Check the conditions for any month of the year.

The best time of year to visit Saint Marys in Australia

During the months of January and February you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Which is the warmest month in Saint Marys?
    January has an average maximum temperature of 20°C and is the warmest month of the year.
  • Which is the coldest month in Saint Marys?
    The coldest month is August with an average maximum temperature of 12°C.
  • Which is the wettest month in Saint Marys?
    November tops the wettest month list with 83 mm of rainfall.
  • Which is the driest month in Saint Marys?
    May is the driest month with 40 mm of precipitation.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.