Bluffton receives its highest rainfall in Aug, while humidity peaks during winter months.
🌧️ Wettest:Aug — 170 mm☀️ Driest:Nov — 65 mm
💧 Humidity peaks at 80% in Dec · annual avg 78%
🌍 Climate Summary
Avg Annual Temp:67.5°F
Avg Annual Rainfall:1228 mm
Avg Humidity:78%
Data Period:1981 – 2025
Bluffton Climate Overview
Bluffton has a warm subtropical climate with warm summers and mild winters.
Temperatures peak in Jul and drop to their lowest in Jan,
while rainfall is highest during summer months.
Humidity remains high throughout the year, especially during winter months, creating warm and humid conditions.
📈 Yearly Trends
The warmest year in Bluffton's recorded history was 1990
(avg: 69.3°F),
while the coldest year was 1984
(avg: 66°F),
based on annual average temperatures.
📊 Key Climate Trends
🌡️ Bluffton's temperature has remained relatively stable over the past decade
📈 Minimum temperatures show a slight warming trend in recent years
🌧️ Rainfall has decreased in recent years compared to earlier periods
🌡️ Annual Temperature Trend
View Range:
Average annual high/low · Last 10 years · °F
Bluffton's temperatures has remained relatively stable over the past decade.
The highest recorded temperature reached
93.4°F in Jul 1990,
while the lowest dropped to
23.8°F in Jan 1985.
🌧️ Annual Precipitation
View Range:
Total annual precipitation · Last 10 years · mm/year
Annual rainfall in Bluffton shows noticeable variation. Rainfall has decreased in recent years compared to earlier periods.
Based on 45 years of data (1981–2025), Jul is typically the hottest month in Bluffton, South Carolina, with average high temperatures around 89.1°F.
What is the coldest month in Bluffton?▼
Jan is the coldest month in Bluffton, with average low temperatures around 37°F.
What is the rainiest month in Bluffton?▼
Aug receives the most rainfall with approximately 170 mm, while Nov is the driest with 65 mm.
What was the highest temperature ever recorded in Bluffton?▼
The highest recorded temperature was 93.4°F in Jul 1990. This is part of the historical record spanning 1981–2025.
What was the lowest temperature ever recorded in Bluffton?▼
The lowest recorded temperature was 23.8°F in Jan 1985.
How many years of data does this page cover?▼
This page covers 45 years of climate data from 1981 to 2025. As new data is added to the database the page automatically reflects the updated coverage.
How much sunlight does Bluffton get?▼
Bluffton receives the most sunlight in May with an average solar radiation of 6.46 kWh/m²/day. This solar radiation data, sourced from NASA POWER, is useful for solar energy planning, agriculture, and understanding seasonal sunshine availability in South Carolina.
Where does this weather data come from?▼
All climate data is sourced from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite and model data. It provides monthly averages for temperature, precipitation, humidity, wind speed, and solar radiation.
📚 Data Source
All weather data is sourced from NASA POWER (Prediction of Worldwide Energy Resources), a NASA project providing solar and meteorological data for renewable energy, building efficiency, and agricultural research.