September weather forecastTersana, Indonesia

Weather in September

September, the first month of the spring in Tersana, is a hot month, with temperature in the range of an average high of 30.8°C (87.4°F) and an average low of 22.8°C (73°F).

Temperature

Entering September, Tersana's average high-temperature reads a hot 30.8°C (87.4°F), indicating a close resemblance to the previous month's climate. Tersana reports a consistent average low-temperature of 22.8°C (73°F) throughout September nights.

Heat index

The heat index value for September is estimated at a fiery hot 37°C (98.6°F). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is achieved by amalgamating air temperature with the relative humidity readings. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
Perspiring is how the human body naturally cools down, as sweat's evaporation takes away excess heat. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

With an average relative humidity of 70%, September is the least humid month.

Rainfall

In Tersana, during September, the rain falls for 10.7 days and regularly aggregates up to 22mm (0.87") of precipitation. In Tersana, during the entire year, the rain falls for 244.1 days and collects up to 1214mm (47.8") of precipitation.

Daylight

In Tersana, the average length of the day in September is 12h and 4min.
On the first day of the month, sunrise is at 05:46 and sunset at 17:46. On the last day of September, in Tersana, sunrise is at 05:31 and sunset at 17:41 WIB.

Sunshine

The months with the most sunshine are July through September, with an average of 9.7h of sunshine.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. The months with the lowest UV index in Tersana are January through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The daily maximum UV index of 7 in September interprets into the following advice:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.