September weather forecast
Cobija, Bolivia

Come September, Cobija starts transitioning from the dryness of August, marking a rise in rainfall to 52mm (2.05"). While temperatures continue to be steady and warm, humidity gradually increases, preparing for the upcoming wet season. Alongside, the increased cloud cover cuts down on sunshine hours. Daylight availability remains consistent with the past couple of months. As a shifting climate envelops the city, September's weather inches towards the heavier precipitation months, presenting a blend of warm dryness and slight moisture.

Temperature

In Cobija, temperatures reach their average annual highs in September, measuring 34.3°C (93.7°F) and a minimum average of 21.6°C (70.9°F).

Heat index

In September, the heat index is calculated to be a scorching 43°C (109.4°F). Heed: Expect heat cramps and heat exhaustion. Continued action may cause heatstroke.
In the scope of the heat index, its values resonate with shade and light wind conditions. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a single figure representing how weather conditions feel when combining temperature and humidity. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly important for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

The average relative humidity in September in Cobija is 61%.

Rainfall

In September, the rain falls for 15.1 days. Throughout September, 52mm (2.05") of precipitation is accumulated. Throughout the year, there are 253 rainfall days, and 1428mm (56.22") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 3min.
On the first day of the month, sunrise is at 06:37 and sunset at 18:32. On the last day of September, sunrise is at 06:18 and sunset at 18:30 -04.

Sunshine

The average sunshine in September is 9.3h.

UV index

The months with the highest UV index in Cobija are July through October, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index of 7 during September translates into these guidelines:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.