September weather forecast and climate
Roldanillo, Colombia

Weather in September

The first month of the autumn, September, is still a warm month in Roldanillo, Colombia, with average temperature varying between 14.2°C (57.6°F) and 27.5°C (81.5°F).

Temperature

In September, the average high-temperature is relatively the same as in August - a still warm 27.5°C (81.5°F). In September, in Roldanillo, the average low-temperature is 14.2°C (57.6°F).

Heat index

In September, the average heat index is evaluated at 29.5°C (85.1°F). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'felt air temperature', 'feels like', or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (pregnancy, differences in body mass, height, and shape, metabolic differences), and activity. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

The average relative humidity in September is 68%.

Rainfall

In Roldanillo, during September, the rain falls for 19 days and regularly aggregates up to 106mm (4.17") of precipitation. In Roldanillo, during the entire year, the rain falls for 264.8 days and collects up to 1451mm (57.13") of precipitation.

Daylight

In Roldanillo, the average length of the day is 12.1h.

Sunshine

In Roldanillo, the average sunshine is 10.8h.

UV index

January through December, with an average maximum UV index of 5, are months with the highest UV index. January through December, with an average maximum UV index of 5, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a medium health hazard from the exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 5 transform into the following instructions:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Roldanillo?

The average high-temperature, in September, in Roldanillo, is 27.5°C (81.5°F), while the average low-temperature is 14.2°C (57.6°F). In September, the average heat index (a.k.a. 'real feel', 'felt air temperature'), that combines air temperature and relative humidity, is evaluated at 29.5°C (85.1°F).

What is the average humidity in September in Roldanillo?

The average relative humidity in September in Roldanillo is 68%.

How much does it rain in Roldanillo in September?

In Roldanillo, in September, it is raining for 19 days, with typically 106mm (4.17") of accumulated precipitation.

What is the average length of the day in September in Roldanillo?

In September, the average length of the day in Roldanillo, Colombia, is 12.1h.

How many hours of sunshine does Roldanillo have in September?

In September, the average sunshine in Roldanillo, Colombia, is 10.8h.

When is the highest UV index in Roldanillo?

Months with the highest UV index are January through December, with an average maximum UV index of 5.

What is the month with the lowest UV index in Roldanillo?

Months with the lowest UV index in Roldanillo, Colombia, are January through December, with an average maximum UV index of 5.

What is the UV index intensity in September in Roldanillo?

The average daily maximum UV index in September in Roldanillo, Colombia, is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV rays.

Average temperature in September
Roldanillo, Colombia

Average temperature in September - Roldanillo, Colombia
  • Average high temperature in September: 27.5°C

The warmest month (with the highest average high temperature) is August (27.8°C).
The month with the lowest average high temperature is November (24.1°C).

  • Average low temperature in September: 14.2°C

The month with the highest average low temperature is May (14.6°C).
The coldest month (with the lowest average low temperature) is January (13.4°C).

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Average pressure in September
Roldanillo, Colombia

Average pressure in September - Roldanillo, Colombia
  • Average pressure in September: 1013.6mbar

Months with the highest atmospheric pressure are June and July (1013.7mbar).
The month with the lowest atmospheric pressure is February (1012.5mbar).

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Average wind speed in September
Roldanillo, Colombia

Average wind speed in September - Roldanillo, Colombia
  • Average wind speed in September: 3.7km/h

The windiest month (with the highest average wind speed) is July (4.1km/h).
The calmest month (with the lowest average wind speed) is November (3.1km/h).

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Average humidity in September
Roldanillo, Colombia

Average humidity in September - Roldanillo, Colombia
  • Average humidity in September: 68%

The month with the highest relative humidity is November (80%).
The month with the lowest relative humidity is August (67%).

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Average rainfall in September
Roldanillo, Colombia

Average rainfall in September - Roldanillo, Colombia
  • Average rainfall in September: 106mm

The wettest month (with the highest rainfall) is April (182mm).
The driest month (with the least rainfall) is January (69mm).

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Average rainfall days in September
Roldanillo, Colombia

Average rainfall days in September - Roldanillo, Colombia
  • Average rainfall days in September: 19 days

The month with the highest number of rainy days is November (26.7 days).
The month with the least rainy days is July (18.4 days).

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Average daylight in September /
Average sunshine in September
Roldanillo, Colombia

Average daylight in September / Average sunshine in September - Roldanillo, Colombia
  • Average daylight in September: 12.1h

Months with the longest days are June and July (Average daylight: 12.4h).
Months with the shortest days are January, November and December (Average daylight: 11.9h).

  • Average sunshine in September: 10.8h

The month with the most sunshine is June (Average sunshine: 11.1h).
The month with the least sunshine is December (Average sunshine: 7.9h).

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Average sunshine days in September
Roldanillo, Colombia

Average sunshine days in September - Roldanillo, Colombia
  • Average sunshine days in September: 7.6 days

The month with the most sunshine days is August (9 days).
The month with the least sunshine days is November (1.9 days).

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Average UV index in September
Roldanillo, Colombia

Average UV index in September - Roldanillo, Colombia
  • Average UV index in September: 5

Months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 5).
Months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 5).

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Average cloud cover in September
Roldanillo, Colombia

Average cloud cover in September - Roldanillo, Colombia
  • Average cloud cover in September: 26

The month with the most cloud cover is November (Cloud cover 43).
Months with the least cloud cover are August and September (Cloud cover 26).

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Average visibility in September
Roldanillo, Colombia

Average visibility in September - Roldanillo, Colombia
  • Average visibility in September: 9km

Months with the highest visibility are February, May, June, July, August, September and October (9km).
Months with the lowest visibility are January, March, April, November and December (8km).

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