October weather forecast
Port Royal, SC

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Weather in October

October ushers in autumn in earnest, with temperatures sliding down and rainfall decreasing from September. Lower temperatures range around 63.5°F (17.5°C), and higher temperatures tend to average at 76.6°F (24.8°C). As the month progresses, leaves on trees start to turn vibrant shades of orange and gold. October is characterised by crisp weather and stunning fall foliage, and is one of the favorite months for locals and visitors in Port Royal.

Temperature

In October, the average high-temperature marginally decreases from 85.1°F (29.5°C) in September to a still warm 76.6°F (24.8°C). Port Royal experiences an average low-temperature of 63.5°F (17.5°C) in month of October.

Humidity

The average relative humidity in October is 73%.

Rainfall

In Port Royal, in October, it is raining for 9.5 days, with typically 2.24" (57mm) of accumulated precipitation. Throughout the year, there are 154.7 rainfall days, and 23.11" (587mm) of precipitation is accumulated.

Snowfall

In Port Royal, snow does not fall in March through November.

Daylight

In Port Royal, the average length of the day in October is 11h and 22min.
On the first day of October in Port Royal, sunrise is at 7:17 am and sunset at 7:07 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 6:33 pm EDT.

Sunshine

The average sunshine in October is 6.8h.

UV index

In Port Royal, South Carolina, the average daily maximum UV index in October is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum daily UV index, 5 in October, converts into the following recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.

Frequently asked questions

What is the average October temperature?

In Port Royal, 76.6°F (24.8°C) is the average high-temperature and 63.5°F (17.5°C) is the average low-temperature during October. In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is appraised at 95°F (35°C).

What is the average humidity in October?

In October, the average relative humidity is 73%.

How much does it rain in October?

In Port Royal, in October, during 9.5 rainfall days, 2.24" (57mm) of precipitation is typically accumulated.

When it does not snow?

March through November are months without snowfall.

How many hours of daylight does Port Royal have in October?

In Port Royal, the average day length in October is 11h and 22min.

What time are sunrise and sunset in October?

On the first day of October in Port Royal, sunrise is at 7:17 am and sunset at 7:07 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 6:33 pm EDT.

How many hours of sunshine does Port Royal have in October?

The average sunshine duration in October is 6.8h.

What is the UV index reading in October?

In October, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Port Royal, SC

Average temperature in October - Port Royal, SC
  • Average high temperature in October: 76.6°F

The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (57.6°F).

  • Average low temperature in October: 63.5°F

The month with the highest average low temperature is August (76.6°F).
The coldest month (with the lowest average low temperature) is January (44.1°F).

Average pressure in October
Port Royal, SC

Average pressure in October - Port Royal, SC
  • Average pressure in October: 30.02"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).

Average wind speed in October
Port Royal, SC

Average wind speed in October - Port Royal, SC
  • Average wind speed in October: 7.6mph

The windiest month (with the highest average wind speed) is April (8.2mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

Average humidity in October
Port Royal, SC

Average humidity in October - Port Royal, SC
  • Average humidity in October: 73%

The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is March (71%).

Average rainfall in October
Port Royal, SC

Average rainfall in October - Port Royal, SC
  • Average rainfall in October: 2.24"

The wettest month (with the highest rainfall) is August (3.54").
The driest month (with the least rainfall) is February (0.87").

Average rainfall days in October
Port Royal, SC

Average rainfall days in October - Port Royal, SC
  • Average rainfall days in October: 9.5 days

The month with the highest number of rainy days is August (21.8 days).
The month with the least rainy days is November (6.8 days).

Average snowfall days in October
Port Royal, SC

Average snowfall days in October - Port Royal, SC
  • Average snowfall days in October: 0 days

The month with the highest number of snowfall days is January (0.2 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

Average daylight in October /
Average sunshine in October
Port Royal, SC

Average daylight in October / Average sunshine in October - Port Royal, SC
  • Average daylight in October: 11h and 2min

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 October: 6h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).

Average sunshine days in October
Port Royal, SC

Average sunshine days in October - Port Royal, SC
  • Average sunshine days in October: 19.4 days

The month with the most sunshine days is November (20.7 days).
The month with the least sunshine days is August (5.3 days).

Average UV index in October
Port Royal, SC

Average UV index in October - Port Royal, SC
  • Average UV index in October: 5

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).

Average cloud cover in October
Port Royal, SC

Average cloud cover in October - Port Royal, SC
  • Average cloud cover in October: 26

The months with the most cloud cover are February and December (Cloud cover 39).
The month with the least cloud cover is July (Cloud cover 25).

Average visibility in October
Port Royal, SC

Average visibility in October - Port Royal, SC
  • Average visibility in October: 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).

Port Royal, South Carolina, USA

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