Bluffton, United States experiences average highs of 24°C (75°F) and lows of 17°C (63°F) throughout the year. Rainfall is moderate, averaging about 11 rainy days per month. Sunshine is abundant, averaging about 10 hours per day. Average highs have stayed broadly stable across the available records.
Bluffton, United States Weather & Climate 2026
Monthly climate averages for Bluffton, United States. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Nov 
Wetter season: May–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
6.9/10
Best: March, April, May, October, November
UV Index
6
High
Temperature 24°C / 17°C
Feels Like 25°C / 17°C
Rainy Days 11
Rainfall 102 mm
Sunshine 10 h
Humidity 76%
Wind Speed 21 km/h
Dew Point 16°C
Frost Days 2 days
Hottest Month
31°C
July
Avg Low25°C
Rain18days
Coldest Month
7°C
January
Avg High15°C
Rain8days
Driest Month
6days
April
Avg High24°C
Avg Low16°C
Windiest Month
22 km/h
March (Gusts 39)
Sea Temperature
11°C – 31°C
Warmest water: July (
30.5°C
)
Worst Time to Visit
Consider avoiding July, August due to extreme heat, heavy rainfall, oppressive humidity.
Sun Position
Sunrise 06:18
Daylight 14.3h
Sunset 20:33
Live conditions—
Bluffton on the map · live conditions
Bluffton, United States
- Continent
- Americas
- Country
- United States
- City
- Bluffton
- Population
- 16.7K
- Elevation
- 6 m
- Coordinates
- 32.24°, -80.86°
Seasonal Breakdown
Spring
Mar–May
Avg High 24°C
Avg Low 16°C
Rain 8 days/mo
3/3 best months
Summer
Jun–Aug
Avg High 30°C
Avg Low 25°C
Rain 17 days/mo
Autumn
Sep–Nov
Avg High 25°C
Avg Low 18°C
Rain 9 days/mo
2/3 best months
Winter
Dec–Feb
Avg High 17°C
Avg Low 9°C
Rain 8 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 15°C / 7°C . Feb: 18°C / 11°C . Mar: 21°C / 13°C . Apr: 24°C / 16°C . May: 27°C / 20°C . Jun: 30°C / 24°C . Jul: 31°C / 25°C . Aug: 30°C / 25°C . Sep: 29°C / 23°C . Oct: 25°C / 18°C . Nov: 20°C / 13°C . Dec: 17°C / 10°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 77 mm. Feb: 75 mm. Mar: 86 mm. Apr: 74 mm. May: 93 mm. Jun: 105 mm. Jul: 136 mm. Aug: 198 mm. Sep: 129 mm. Oct: 86 mm. Nov: 63 mm. Dec: 102 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 74%. Feb: 77%. Mar: 71%. Apr: 71%. May: 73%. Jun: 78%. Jul: 80%. Aug: 82%. Sep: 79%. Oct: 76%. Nov: 75%. Dec: 78%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 22 km/h . Feb: 22 km/h . Mar: 22 km/h . Apr: 22 km/h . May: 21 km/h . Jun: 20 km/h . Jul: 19 km/h . Aug: 19 km/h . Sep: 20 km/h . Oct: 20 km/h . Nov: 20 km/h . Dec: 21 km/h .
Sunshine
Sunshine
Sunshine: Jan: 8h. Feb: 8h. Mar: 9h. Apr: 11h. May: 11h. Jun: 12h. Jul: 12h. Aug: 11h. Sep: 10h. Oct: 9h. Nov: 8h. Dec: 7h.
Sea Temperature
Sea Temperatureswim
Line chart showing monthly sea temperature. Jan: 11°C . Feb: 14°C . Mar: 17°C . Apr: 21°C . May: 25°C . Jun: 28°C . Jul: 31°C . Aug: 30°C . Sep: 27°C . Oct: 23°C . Nov: 19°C . Dec: 14°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 4. Feb: UV 5. Mar: UV 6. Apr: UV 7. May: UV 7. Jun: UV 8. Jul: UV 8. Aug: UV 7. Sep: UV 7. Oct: UV 5. Nov: UV 4. Dec: UV 3.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy
Climate Trends
Average highs have stayed broadly stable across the available records. Average rainfall is trending wetter by about 14 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 32°C | Jul · 31°C |
| Coldest month | Jan 2025 · 3°C | Jan · 7°C |
| Wettest month | Aug 2025 · 411 mm | Aug · 198 mm |
| Windiest month | Mar 2025 · 24 km/h | Mar · 22 km/h |
Month-by-Month Weather Table
January
Fair 
February
Good March best
Excellent April best
Excellent May best
Excellent June
Fair July
Wet August
Wet September
Good October best
Excellent November best
Excellent December
Good | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 15°C / 7°C | 13°C / 4°C | 8days (77 mm) Wet | 7.5h Good | 74% Muggy | 3.8 Moderate | Fair | View Details |
| February | 18°C / 11°C | 17°C / 8°C | 8days (75 mm) Wet | 7.9h Good | 77% Humid | 4.6 Moderate | Good | View Details |
| March best | 21°C / 13°C | 20°C / 10°C | 8days (86 mm) Wet | 9.4h Good | 71% Muggy | 6.2 High | Excellent | View Details |
| April best | 24°C / 16°C | 24°C / 15°C | 6days (74 mm) Good | 10.7h Excellent | 71% Muggy | 7.4 Very High | Excellent | View Details |
| May best | 27°C / 20°C | 29°C / 21°C | 11days (93 mm) Wet | 11.3h Excellent | 73% Muggy | 7.4 Very High | Excellent | View Details |
| June | 30°C / 24°C | 34°C / 26°C | 14days (105 mm) Wet | 11.5h Excellent | 78% Humid | 8 Very High | Fair | View Details |
| July | 31°C / 25°C | 37°C / 29°C | 18days (136 mm) Wet | 11.9h Excellent | 80% Humid | 8.2 Very High | Wet | View Details |
| August | 30°C / 25°C | 35°C / 29°C | 20days (198 mm) Wet | 10.8h Excellent | 82% Humid | 7.3 Very High | Wet | View Details |
| September | 29°C / 23°C | 32°C / 25°C | 13days (129 mm) Wet | 9.9h Good | 79% Humid | 6.6 High | Good | View Details |
| October best | 25°C / 18°C | 26°C / 18°C | 8days (86 mm) Wet | 9.1h Good | 76% Humid | 5.4 High | Excellent | View Details |
| November best | 20°C / 13°C | 20°C / 11°C | 7days (63 mm) Good | 8.1h Good | 75% Muggy | 4.1 Moderate | Excellent | View Details |
| December | 17°C / 10°C | 15°C / 7°C | 9days (102 mm) Wet | 6.8h Fair | 78% Humid | 3.3 Moderate | Good | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Bluffton are March, April, May, October, November, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Bluffton, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Bluffton is July, with average daytime highs of 31°C (88°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Bluffton is January, with average overnight lows of 7°C (45°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Bluffton is August, averaging 198mm of precipitation across 20 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Bluffton runs through August, July, June, September, with the heaviest rainfall in August. Based on 10-year averages for Bluffton.
Bluffton receives approximately 115 sunshine hours per year. The sunniest month is July with around 12 hours. Based on climate data for Bluffton.
The least favorable months to visit Bluffton are July, August, primarily due to extreme heat, heavy rainfall, oppressive humidity. For the best conditions, consider March, April, May, October, November instead.
The annual average UV index in Bluffton is 6, classified as high. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Bluffton is 76%, classified as humid. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes — sea temperatures in May, June, July, August, September, October average 27°C (81°F), which is warm and comfortable for swimming and water activities.
Bluffton rarely sees significant snowfall but does experience frost, averaging 2 frost days during the colder months.
Average wind speeds in Bluffton are 21 km/h (13 mph). The windiest month is March with peak winds reaching 22 km/h (14 mph) (gusts up to 39 km/h / 24 mph).
Bluffton averages 6 clear-sky days per month with overall cloud cover around 53%. The clearest skies occur in October.
The annual average dew point in Bluffton is 16°C (61°F), which feels noticeably humid. Summer months may feel slightly sticky, but conditions remain manageable for most people.
Bluffton has a Humid Subtropical climate, classified as Cfa under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Bluffton ranges from 17°C (63°F) to 25°C (77°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
June is not the best time to visit Bluffton, with a climate score of 6/10. Consider visiting during March, April, May, October, November instead for better conditions.
For June in Bluffton, pack Umbrella, Waterproof jacket, Waterproof shoes, Breathable clothing, Sunscreen (SPF 30+). With average highs of 30°C (86°F) and 14 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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