Irmo (SC) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Irmo.
Climate overview of Irmo
Irmo, South Carolina, United States of America, sees big temperature differences between seasons, with July peaking at 34°C (93°F) and January dropping to 13°C (55°F).
With around 1165 mm (46 in) of annual rain/snowfall, Irmo has a notably wet climate. The wettest month is August.
Irmo Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Irmo — and find the best time to visit.
Monthly Temperature in Irmo
Visitors to Irmo can expect significant temperature changes throughout the year. Average daytime temperatures reach a very warm 34°C (93°F) in July. In January, the coolest month of the year, temperatures drop to a moderate 13°C (55°F).
At night, temperatures range from around 22°C (72°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 Irmo
Irmo is known for its substantial rain/snowfall, with annual precipitation reaching 1165 mm (46 in). Irmo experiences moderate seasonal variation in rainfall, with monthly averages ranging from 139 mm (5.5 in) in August, the wettest month, and 67 mm (2.6 in) in April, the driest month. For more details, please visit our Irmo Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Irmo
The weather does bring rainfall during this period, between 67 mm (2.6 in) and 106 mm (4.2 in). Ready to plan your travels but need destination ideas? Our smart tool recommends places based on the climate conditions you prefer. Start planning with our destination weather tool.
Frequently asked questions about the climate in Irmo
What is the best time to visit Irmo?
March, April and May typically offer the most optimal weather in Irmo. In contrast, June, July and August tend to have less optimal conditions.
What temperatures can I expect in Irmo?
Daytime highs range from 13°C (55°F) in January to 34°C (93°F) in July. Nighttime lows range from 0°C (32°F) to 22°C (72°F). Temperatures vary considerably through the year.
How much rain does Irmo get?
Annual rainfall is around 1165 mm (46 in). August is the wettest month with 139 mm (5.5 in), while April is the driest with 67 mm (2.6 in).
Irmo 3-Day Forecast
Irmo (SC) 3-Day Forecast
Irmo on the map
Irmo is highlighted — select any city to see its climate.
Popular this month
Where to go in July — average daytime high across popular destinations.
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