Suwanee (GA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Suwanee.
Climate overview of Suwanee
Suwanee, Georgia, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 32°C (90°F) in July, while winters cool to 11°C (52°F) in January.
The city has a wet climate, receiving around 1302 mm (51 in) of rain/snowfall per year. Despite the high annual total, it has very warm summers and cold winters. December is the wettest month. May is the sunniest month, averaging 9.6 hours of sunshine per day.
Suwanee Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Suwanee - and find the best time to visit.
Monthly Temperature in Suwanee
Depending on the time of the year, temperatures range from very warm to chilly in Suwanee. On average, daytime temperatures range from a very warm 32°C (90°F) in July to a chilly 11°C (52°F) in January.
Nighttime temperatures range from 21°C (70°F) in July to 0°C (32°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Suwanee
Suwanee has a relatively rain/snowy climate with high precipitation levels, averaging 1302 mm (51 in) of rain/snowfall annually. The wettest period in Suwanee occurs in December, which receives around 152 mm (6 in) of precipitation. During the driest month, April, Suwanee experiences moderate rainfall, totaling 93 mm (3.7 in). The consistent precipitation levels throughout the year contribute to a relatively stable climate. For more details, please visit our Suwanee 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 Suwanee
In Suwanee, summer days are longer and more sunny, with daily sunshine hours peaking at 9.6 hours in May. As the darker season arrives, the brightness of the sun becomes less. January sees a soft sun for only 5.5 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 Suwanee by Month
The relative humidity is high throughout the year in Suwanee.
The city experiences its highest humidity in August, reaching 75%. In April, the humidity drops to its lowest level at 61%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Suwanee
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: April and September
- Warmest weather: June, July and August
- Most sunshine: May and June
- Fewest rainy days: April, September, October and November
- Seasonal pattern: Very warm summers and cold winters
- Coldest conditions: January, with freezing nights around 0°C (32°F).
Frequently asked questions about the climate in Suwanee
What is the best time to visit Suwanee?
April and September typically offer the most optimal weather in Suwanee. In contrast, January, February and December tend to have less optimal conditions. Suwanee has very warm summers and cold winters.
What temperatures can I expect in Suwanee?
Daytime highs range from 11°C (52°F) in January to 32°C (90°F) in July. Nighttime lows range from 0°C (32°F) to 21°C (70°F). Temperatures vary considerably through the year.
How much rain does Suwanee get?
Annual rainfall is around 1302 mm (51 in). December is the wettest month with 152 mm (6 in), while April is the driest with 93 mm (3.7 in).
How sunny is Suwanee?
Suwanee receives around 2,733 hours of sunshine per year. May is the sunniest month with 288 hours, while January is the cloudiest with just 164 hours. Overall, Suwanee enjoys abundant sunshine.
Suwanee 3-Day Forecast
Suwanee on the map
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