September weather forecastBirem, Indonesia

Weather in September

The first month of the spring, September, is still a tropical month in Birem, Indonesia, with temperature in the range of an average high of 30.8°C (87.4°F) and an average low of 25.6°C (78.1°F).
The perfect water temperature of 28.3°C (82.9°F) with 7mm (0.28") of accumulated rainfall and only 5 rainfall days, makes September a great period for swimming and other water activities.

Temperature

With the onset of September, the average high-temperature registers at a still tropical 30.8°C (87.4°F), subtly different from August's 30°C (86°F). The temperature lowers to an average of 25.6°C (78.1°F) during September nights.

Heat index

The average heat index in September is estimated at a sweltering 36°C (96.8°F). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. Elevated heat gain compared to the body's release capability poses risks of dehydration and potential overheating.

Humidity

The average relative humidity in September is 67%.

Rainfall

In Birem, in September, during 5 rainfall days, 7mm (0.28") of precipitation is typically accumulated. In Birem, Indonesia, during the entire year, the rain falls for 179.1 days and collects up to 594mm (23.39") of precipitation.

Sea temperature

In Birem, Indonesia, in September, the average water temperature is 28.3°C (82.9°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

The average length of the day in September is 12h and 4min.
On the first day of the month, sunrise is at 05:27 and sunset at 17:26. On the last day of September, sunrise is at 05:12 and sunset at 17:22 WIB.

Sunshine

August and September, with an average of 9.9h of sunshine, are months with the most sunshine.

UV index

The months with the highest UV index in Birem, Indonesia, are January through December, with an average maximum UV index of 7. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: A typical high UV index of 7 in September suggests the following recommendations:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be attentive! The UV exposure is heightened with reflections from sand and water.