Saint Marys (GA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Saint Marys.
Climate overview of Saint Marys
Temperatures in Saint Marys, Georgia, United States of America, vary greatly throughout the year. July is the hottest month at 32°C (90°F), while January is the coldest at 18°C (64°F).
The city has a wet climate, receiving around 1192 mm (47 in) of rainfall per year. August is the wettest month. May is the sunniest month, averaging 10.0 hours of sunshine per day.
Saint Marys Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Saint Marys — and find the best time to visit.
Monthly Temperature in Saint Marys
The climate in Saint Marys is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a very warm 32°C (90°F) in July to a moderate 18°C (64°F) in January.
Nighttime temperatures range from 24°C (75°F) in July to 6°C (43°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Saint Marys
Saint Marys has a notably wet climate with abundant precipitation, recording 1192 mm (47 in) of rainfall per year. The seasons in Saint Marys bring significant changes in precipitation. The wettest month, August, receives heavy rainfall, with an average of 177 mm (7 in) of precipitation. This rainfall is distributed across 18 rainy days.
In contrast, the driest month, November, experiences much less rainfall, totaling 45 mm (1.8 in) over 7 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Saint Marys Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Saint Marys
In Saint Marys, summer days are longer and more sunny, with daily sunshine hours peaking at 10.0 hours in May. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 6.0 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Saint Marys by Month
The relative humidity is high throughout the year in Saint Marys.
The city experiences its highest humidity in August, reaching 81%. In January, the humidity drops to its lowest level at 65%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Saint Marys
The wettest months are August, when precipitation is at its highest. Need help choosing your next travel destination? We offer a specialized tool that matches you with locations based on your weather preferences. Explore destinations that suit your climate preferences.
Frequently asked questions about the climate in Saint Marys
What is the best time to visit Saint Marys?
March, April, May, October, November and December typically offer the most optimal weather in Saint Marys. In contrast, June, July, August and September tend to have less optimal conditions.
What temperatures can I expect in Saint Marys?
Daytime highs range from 18°C (64°F) in January to 32°C (90°F) in July. Nighttime lows range from 6°C (43°F) to 24°C (75°F). Temperatures vary considerably through the year.
How much rain does Saint Marys get?
Annual rainfall is around 1192 mm (47 in). August is the wettest month with 177 mm (7 in), while November is the driest with 45 mm (1.8 in).
How sunny is Saint Marys?
Saint Marys receives around 2,868 hours of sunshine per year. May is the sunniest month with 301 hours, while December is the cloudiest with just 181 hours. Overall, Saint Marys enjoys abundant sunshine.
Saint Marys 3-Day Forecast
Saint Marys (GA) 3-Day Forecast
Saint Marys on the map
Saint Marys is highlighted — select any city to see its climate.
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