September weather forecastKalianda, Indonesia

Weather in September

September, the first month of the spring in Kalianda, is still a tropical month, with temperature in the range of an average low of 22.4°C (72.3°F) and an average high of 31.3°C (88.3°F).

Temperature

September's weather displays an average high-temperature of a still hot 31.3°C (88.3°F), slightly varied from August's 30.6°C (87.1°F). An average low-temperature of 22.4°C (72.3°F) is recorded during the nights in September.

Heat index

During September, the heat index is calculated to be a scorching 41°C (105.8°F). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.
The heat index's values are generally associated with conditions in shade and light breezes. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

The months with the lowest humidity are September and October, with an average relative humidity of 78%.

Rainfall

In Kalianda, in September, it is raining for 16.3 days, with typically 48mm (1.89") of accumulated precipitation. In Kalianda, during the entire year, the rain falls for 296.2 days and collects up to 1712mm (67.4") of precipitation.

Sea temperature

With an average sea temperature of 28.4°C (83.1°F), September is the month with the coldest seawater.
Note: In water activities such as swimming and diving, temperatures from 25°C (77°F) to 29°C (84.2°F) are deemed highly pleasurable for extended periods without any unease.

Daylight

In September, the average length of the day is 12h and 5min.
On the first day of the month, sunrise is at 05:57 and sunset at 17:57. On the last day of September, sunrise is at 05:42 and sunset at 17:52 WIB.

Sunshine

September has the most sunshine of the year in Kalianda, with an average of 9h of sunshine.

UV index

The months with the highest UV index are February through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: An average UV index of 7 in September transforms into this advice:
Avert overexposure. Light-skinned people might experience 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. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Caution! Sand and water reflections can notably increase the UV radiation intensity.