May weather forecast
Bluffton, SC

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The iconic historic Church of the Cross in Bluffton, South Carolina, set in a beautiful garden park
The iconic historic Church of the Cross in Bluffton, South Carolina, set in a beautiful garden park

Weather in May

With May comes the official commencement of the warm season in Bluffton, boasting a distinctive shift in weather. As the temperature now swings between 68.9°F (20.5°C) and 79.2°F (26.2°C), the environment becomes increasingly welcoming for outdoor excursions. The increased rainfall, going up to 2.09" (53mm), provides a refreshing contrast to the otherwise warm environment. It's a comfortable interim climate before the peak summer's onset, characterized by lengthier daylight phases and a prominently rich weather pattern.

Temperature

As April gives way to May, the average high-temperature displays a slight ascent, adjusting from an agreeable 72.9°F (22.7°C) to a warm 79.2°F (26.2°C). In the month of May, Bluffton witnesses a consistent average low-temperature of 68.9°F (20.5°C).

Humidity

The average relative humidity in May is 75%.

Rainfall

In Bluffton, South Carolina, during May, the rain falls for 15.3 days and regularly aggregates up to 2.09" (53mm) of precipitation. In Bluffton, during the entire year, the rain falls for 175.3 days and collects up to 32.28" (820mm) of precipitation.

Snowfall

February through December are months without snowfall.

Daylight

The average length of the day in May in Bluffton is 13h and 49min.
On the first day of May, sunrise is at 6:36 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 8:24 pm EDT.

Sunshine

The average sunshine in May in Bluffton is 10.6h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum daily UV index of 7 during May translates into the following directions:
Shun overexposure. Protection from sun ravages is indispensable. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
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Frequently asked questions

What are the temperatures in Bluffton in May?

The average high-temperature, in May, in Bluffton, is 79.2°F (26.2°C), while the average low-temperature is 68.9°F (20.5°C).

What is the average humidity in May in Bluffton?

In Bluffton, the average relative humidity in May is 75%.

How many days does it rain in May in Bluffton?

In Bluffton, South Carolina, in May, during 15.3 rainfall days, 2.09" (53mm) of precipitation is typically accumulated.

When it does not snow in Bluffton?

In Bluffton, South Carolina, snow does not fall in February through December.

What is the average length of the day in May in Bluffton?

The average day length in May in Bluffton is 13h and 49min.

When is the sunrise / sunset in May in Bluffton?

On the first day of May in Bluffton, sunrise is at 6:36 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 8:24 pm EDT.

How long on average sun shines in May in Bluffton?

In Bluffton, South Carolina, the average sunshine duration in May is 10.6h.

What are the months with the highest UV index in Bluffton?

The months with the highest UV index are May through August, with an average maximum UV index of 7.

How high is the UV index in May in Bluffton?

The average daily maximum UV index in May in Bluffton is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Bluffton, SC

Average temperature in May - Bluffton, SC
  • Average high temperature in May: 79.2°F

The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is January (57.4°F).

  • Average low temperature in May: 68.9°F

The month with the highest average low temperature is July (77.9°F).
The coldest month (with the lowest average low temperature) is January (46°F).

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Average pressure in May
Bluffton, SC

Average pressure in May - Bluffton, SC
  • Average pressure in May: 30.03"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).

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Average wind speed in May
Bluffton, SC

Average wind speed in May - Bluffton, SC
  • Average wind speed in May: 9mph

The windiest months (with the highest average wind speed) are January, March and April (9.6mph).
The calmest month (with the lowest average wind speed) is August (7.8mph).

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Average humidity in May
Bluffton, SC

Average humidity in May - Bluffton, SC
  • Average humidity in May: 75%

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is January (72%).

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Average rainfall in May
Bluffton, SC

Average rainfall in May - Bluffton, SC
  • Average rainfall in May: 2.09"

The wettest month (with the highest rainfall) is August (6.06").
The driest month (with the least rainfall) is January (1.02").

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Average rainfall days in May
Bluffton, SC

Average rainfall days in May - Bluffton, SC
  • Average rainfall days in May: 15.3 days

The month with the highest number of rainy days is August (25 days).
The month with the least rainy days is January (8.3 days).

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Average snowfall in May
Bluffton, SC

Average snowfall in May - Bluffton, SC
  • Average snowfall in May: 0"

The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in May
Bluffton, SC

Average snowfall days in May - Bluffton, SC
  • Average snowfall days in May: 0 days

The months with the highest number of snowfall days are January and February (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).

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Average daylight in May /
Average sunshine in May
Bluffton, SC

Average daylight in May / Average sunshine in May - Bluffton, SC
  • Average daylight in May: 13h and 5min

The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).

  • Average sunshine in May: 10h and 4min

The months with the most sunshine are June and July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

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Average sunshine days in May
Bluffton, SC

Average sunshine days in May - Bluffton, SC
  • Average sunshine days in May: 13.2 days

The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is August (2.8 days).

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Average UV index in May
Bluffton, SC

Average UV index in May - Bluffton, SC
  • Average UV index in May: 7

The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).

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Average cloud cover in May
Bluffton, SC

Average cloud cover in May - Bluffton, SC
  • Average cloud cover in May: 27

The months with the most cloud cover are February and December (Cloud cover 38).
The months with the least cloud cover are June and July (Cloud cover 25).

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Average visibility in May
Bluffton, SC

Average visibility in May - Bluffton, SC
  • Average visibility in May: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Bluffton, South Carolina, USA

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