September weather forecast
Bojonegoro, Indonesia

The first month of the spring, September, is also a hot month in Bojonegoro, Indonesia, with an average temperature varying between 22.9°C (73.2°F) and 33.7°C (92.7°F).

Temperature

The start of September sees the average high-temperature at a still hot 33.7°C (92.7°F), showing little difference from August's 32.3°C (90.1°F). The average temperature during September nights dips to a pleasant 22.9°C (73.2°F).

Heat index

The heat index in September is appraised at an extremely hot 43°C (109.4°F). Be wary: Heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', binds temperature metrics with humidity values to give a sense of the actual warmth. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. 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. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

The least humid month in Bojonegoro is September, with an average relative humidity of 65%.

Rainfall

In Bojonegoro, Indonesia, during September, the rain falls for 8.8 days and regularly aggregates up to 19mm (0.75") of precipitation. Throughout the year, in Bojonegoro, there are 232.5 rainfall days, and 1054mm (41.5") of precipitation is accumulated.

Daylight

In Bojonegoro, the average length of the day in September is 12h and 4min.
On the first day of the month, sunrise is at 05:33 and sunset at 17:31. On the last day of September, sunrise is at 05:17 and sunset at 17:27 WIB.

Sunshine

The months with the most sunshine in Bojonegoro are August and September, with an average of 9.7h of sunshine.

UV index

February through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: In September, the maximum UV index of 7 suggests these recommendations:
Fend off overexposure. Sun protection is vital. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.