Barnwell (SC) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Barnwell.
Climate overview of Barnwell
Barnwell, South Carolina, United States of America, sees big temperature differences between seasons, with July peaking at 33°C (91°F) and January dropping to 14°C (57°F).
The city receives considerable rain/snowfall, with around 1194 mm (47 in) annually. August is the wettest month. It has very warm summers and mild winters.
Barnwell Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Barnwell - and find the best time to visit.
Monthly Temperature in Barnwell
Visitors to Barnwell can expect significant temperature changes throughout the year. Typically, average maximum daytime temperatures range from a very warm 33°C (91°F) in July to a moderate 14°C (57°F) in the coolest month, January.
Nights vary from 22°C (72°F) in July to around 1°C (34°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Barnwell
Barnwell is known for its substantial rain/snowfall, with annual precipitation reaching 1194 mm (47 in). The climate in Barnwell shows significant variation throughout the year. Expect high rainfall in August, the wettest month, with an average of 142 mm (5.6 in) of precipitation over 14 rainy days.
In contrast, the driest month October offers drier and sunnier days, with around 65 mm (2.6 in) of rainfall over 7 rainy days. For more details, please visit our Barnwell Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Humidity in Barnwell by Month
The relative humidity is high throughout the year in Barnwell.
The city experiences its highest humidity in August, reaching 77%. In April, the humidity drops to its lowest level at 64%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Barnwell
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: March, April, October and November
- Warmest weather: June, July and August
- Fewer rainy days: February, March, May, October and November
- Seasonal pattern: Very warm summers and mild winters
Frequently asked questions about the climate in Barnwell
What is the best time to visit Barnwell?
March, April, October and November typically offer the most optimal weather in Barnwell. In contrast, June, July and August tend to have less optimal conditions. Barnwell has very warm summers and mild winters.
What temperatures can I expect in Barnwell?
Daytime highs range from 14°C (57°F) in January to 33°C (91°F) in July. Nighttime lows range from 1°C (34°F) to 22°C (72°F). Temperatures vary considerably through the year.
How much rain does Barnwell get?
Annual rainfall is around 1194 mm (47 in). August is the wettest month with 142 mm (5.6 in), while October is the driest with 65 mm (2.6 in).
Barnwell 3-Day Forecast
Barnwell (SC) 3-Day Forecast
Barnwell on the map
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