September weather forecast
Barrancabermeja, Colombia

The first month of the autumn, September, is also a hot month in Barrancabermeja, Colombia, with an average temperature fluctuating between 22.1°C (71.8°F) and 34.5°C (94.1°F).

Temperature

September commences with an average high-temperature of a hot 34.5°C (94.1°F), showing little deviation from August's 35.1°C (95.2°F). Nightly readings in September display a noticeable downturn from daily highs, with the average low-temperature registering an agreeable 22.1°C (71.8°F).

Heat index

For most parts of September, the heat index is estimated at a life-threatening hot 50°C (122°F). Heed: Expect heat cramps and heat exhaustion. Continued action may cause heatstroke.
Understanding the heat index involves considering values for shaded locales with light wind. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'feels like', marries air temperature and humidity to produce a value illustrating perceived warmth. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. 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.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

In Barrancabermeja, the average relative humidity in September is 72%.

Rainfall

In Barrancabermeja, in September, during 21.8 rainfall days, 82mm (3.23") of precipitation is typically accumulated. In Barrancabermeja, Colombia, during the entire year, the rain falls for 245.7 days and collects up to 1137mm (44.76") of precipitation.

Daylight

In Barrancabermeja, the average length of the day in September is 12h and 10min.
On the first day of the month, sunrise is at 05:47 and sunset at 18:02. On the last day of September, in Barrancabermeja, Colombia, sunrise is at 05:43 and sunset at 17:47 -05.

Sunshine

In Barrancabermeja, the average sunshine in September is 9.3h.

UV index

The months with the highest UV index in Barrancabermeja are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Barrancabermeja. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: In September, the maximum UV index of 7 suggests this advice:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.