September weather forecast
Santa Marta, Colombia

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Weather in September

September marks the beginning of a downward trend in Santa Marta's rainfall. With 89mm (3.5") of precipitation and a gradual decline in humidity, it signals the end of the wet season. The lighter winds give the city a breath of fresh air, bringing a partial relief from the previous months' damp climate. Despite the decreasing rainfall, the cloud cover remains significant, casting the sky in an array of dramatic shades. With the sea temperature hitting a yearly high at 29.2°C (84.6°F), coastal activities continue to thrive.

Temperature

The transition into September in Santa Marta reveals an average high-temperature of a still warm 27.5°C (81.5°F), mirroring a close resemblance to August. Santa Marta, in September, registers a nighttime average temperature of 25.3°C (77.5°F).

Heat index

September's heat index is appraised at a hot 31°C (87.8°F). Ongoing activity coupled with exposure often results in weariness and could induce heat cramps.
Heat index values are typically calculated for conditions of shade and a light breeze. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', comes about by integrating the temperature readings with the humidity levels. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.

Humidity

In September, the average relative humidity in Santa Marta is 80%.

Rainfall

In September, the rain falls for 26.5 days. Throughout September, 89mm (3.5") of precipitation is accumulated. Throughout the year, there are 211.9 rainfall days, and 605mm (23.82") of precipitation is accumulated.

Sea temperature

In Santa Marta, the average seawater temperature in September is 29.2°C (84.6°F).
Note: Surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as excellent and extremely agreeable for enduring enjoyment in water activities.

Daylight

In September, the average length of the day in Santa Marta is 12h and 11min.
On the first day of September in Santa Marta, sunrise is at 05:46 and sunset at 18:06. On the last day of the month, sunrise is at 05:45 and sunset at 17:47 -05.

Sunshine

In Santa Marta, the average sunshine in September is 10.3h.

UV index

The months with the highest UV index are February through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: In September, the average maximum UV index of 7 translates into the following recommendations:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Attention! The reflection of both water and sand can increase the intensity of UV rays.
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Frequently asked questions

What is the average September temperature in Santa Marta?

The high-temperature, in September, in Santa Marta, is 27.5°C (81.5°F), while the low-temperature averages to 25.3°C (77.5°F). In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 31°C (87.8°F).

What is the average humidity in September in Santa Marta?

The average relative humidity in September in Santa Marta is 80%.

How many days does it rain in September in Santa Marta?

In September, the rain falls for 26.5 days. Throughout September, 89mm (3.5") of precipitation is accumulated.

What is the sea water temperature in September in Santa Marta?

In September, the average sea temperature in Santa Marta, Colombia, is 29.2°C (84.6°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Santa Marta have in September?

In Santa Marta, the average day length in September is 12h and 11min.

When are sunrise and sunset in September in Santa Marta?

On the first day of September in Santa Marta, Colombia, sunrise is at 05:46 and sunset at 18:06. On the last day of the month, sunrise is at 05:45 and sunset at 17:47 -05.

How many hours of sunshine does Santa Marta have in September?

In September, the average sunshine duration in Santa Marta is 10.3h.

When is the highest UV index in Santa Marta?

February through December, with an average maximum UV index of 7, are months with the highest UV index.

What is the UV index reading in September in Santa Marta?

In September, the average daily maximum UV index in Santa Marta is 7. A UV Index reading of 6 to 7 represents a high health threat from exposure to Sun's UV rays.

Average temperature in September
Santa Marta, Colombia

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

The warmest month (with the highest average high temperature) is May (27.8°C).
The month with the lowest average high temperature is February (27°C).

  • Average low temperature in September: 25.3°C

The month with the highest average low temperature is October (25.4°C).
The coldest month (with the lowest average low temperature) is February (23.8°C).

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Average pressure in September
Santa Marta, Colombia

Average pressure in September - Santa Marta, Colombia
  • Average pressure in September: 1009.9mbar

The month with the highest atmospheric pressure is January (1010.7mbar).
The month with the lowest atmospheric pressure is November (1009.5mbar).

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Average wind speed in September
Santa Marta, Colombia

Average wind speed in September - Santa Marta, Colombia
  • Average wind speed in September: 14.3km/h

The windiest month (with the highest average wind speed) is February (28.5km/h).
The calmest month (with the lowest average wind speed) is October (13.1km/h).

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Average humidity in September
Santa Marta, Colombia

Average humidity in September - Santa Marta, Colombia
  • Average humidity in September: 80%

The month with the highest relative humidity is August (81%).
The months with the lowest relative humidity are January and February (76%).

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Average rainfall in September
Santa Marta, Colombia

Average rainfall in September - Santa Marta, Colombia
  • Average rainfall in September: 89mm

The wettest month (with the highest rainfall) is August (95mm).
The driest months (with the least rainfall) are January and February (7mm).

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Average rainfall days in September
Santa Marta, Colombia

Average rainfall days in September - Santa Marta, Colombia
  • Average rainfall days in September: 26.5 days

The month with the highest number of rainy days is October (26.9 days).
The month with the least rainy days is February (3.8 days).

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Average sea temperature in September
Santa Marta, Colombia

Average sea temperature in September - Santa Marta, Colombia
  • Average sea temperature in September: 29.2°C

The best month for swimming (with the highest average sea temperature) is October (29.5°C).
The coldest month (with the lowest average sea temperature) is February (25.7°C).

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Average daylight in September /
Average sunshine in September
Santa Marta, Colombia

Average daylight in September / Average sunshine in September - Santa Marta, Colombia
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 12h and 48min).
The month with the shortest days is December (Average daylight: 11h and 30min).

  • Average sunshine in September: 10h and 2min

The month with the most sunshine is April (Average sunshine: 11h and 54min).
The months with the least sunshine are January and December (Average sunshine: 7h and 36min).

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Average sunshine days in September
Santa Marta, Colombia

Average sunshine days in September - Santa Marta, Colombia
  • Average sunshine days in September: 0.6 days

The month with the most sunshine days is January (17.3 days).
The month with the least sunshine days is September (0.6 days).

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Average UV index in September
Santa Marta, Colombia

Average UV index in September - Santa Marta, Colombia
  • Average UV index in September: 7

The months with the highest UV index are February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The month with the lowest UV index is January (UV index 6).

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Average cloud cover in September
Santa Marta, Colombia

Average cloud cover in September - Santa Marta, Colombia
  • Average cloud cover in September: 25

The month with the most cloud cover is October (Cloud cover 28).
The months with the least cloud cover are January and February (Cloud cover 8).

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Average visibility in September
Santa Marta, Colombia

Average visibility in September - Santa Marta, Colombia
  • Average visibility in September: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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Santa Marta, Colombia

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