September weather forecastSondakan, Indonesia

Weather in September

The first month of the spring, September, is a hot month in Sondakan, Indonesia, with temperature in the range of an average low of 20.9°C (69.6°F) and an average high of 30.3°C (86.5°F).

Temperature

Upon the beginning of September, Sondakan's high-temperatures register at a tropical 30.3°C (86.5°F), closely mirroring the preceding month. The low-temperature averages to an agreeable 20.9°C (69.6°F) during the nights of September.

Heat index

September's average heat index is estimated at a very hot 37°C (98.6°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
Keep in mind the heat index values are meant for areas in shade and with light wind. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'feels like' or 'felt air temperature', gives a temperature feeling by integrating air temperature and humidity. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

September and October, with an average relative humidity of 74%, are the least humid months in Sondakan, Indonesia.

Rainfall

In Sondakan, in September, it is raining for 13.6 days, with typically 48mm (1.89") of accumulated precipitation. In Sondakan, during the entire year, the rain falls for 276.6 days and collects up to 2049mm (80.67") of precipitation.

Daylight

The average length of the day in September is 12h and 4min.
On the first day of the month, sunrise is at 05:37 and sunset at 17:35. On the last day of September, in Sondakan, sunrise is at 05:21 and sunset at 17:31 WIB.

Sunshine

The months with the most sunshine in Sondakan are August and September, with an average of 9.2h of sunshine.

UV index

September and October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the average person.
Note: The maximum UV index of 7 during September translates into these guidelines:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.