October weather forecast
Jember, Indonesia

The shift from a dry to a wet climate becomes particularly pronounced in October in Jember, Indonesia. A slight increase in humidity coupled with a noteworthy increase in rainfall to 43mm (1.69"), marks the return of the rainy season. Along with this, the temperatures decline further from the September levels, leading to more comfortable days. The daylight duration increases slightly, contrary to the increase in overcast conditions. Towards the end of the month, the city experiences a significant rise in the number of rainy days, setting the stage for more precipitations ahead.

Temperature

October stands out as Jember's warmest month, with an average high-temperature of 34.5°C (94.1°F) and a low-temperature of 23.6°C (74.5°F).

Heat index

Throughout October, the heat index is estimated at a burning hot 46°C (114.8°F). Alert: Heat cramps and heat exhaustion are likely to occur. Prolonged exertion can lead to heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Heat index values might soar by up to 15 Fahrenheit (8 Celsius) degrees with exposure to direct sunshine.
Note: The heat index, also known as 'feels like' or 'felt air temperature', determines the feeling of heat when you account for the relative humidity. 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 particularly meaningful for babies and toddlers. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

The months with the lowest humidity are September and October, with an average relative humidity of 65%.

Rainfall

In Jember, during October, the rain falls for 17.2 days and regularly aggregates up to 43mm (1.69") of precipitation. Throughout the year, in Jember, there are 247.8 rainfall days, and 1536mm (60.47") of precipitation is accumulated.

Daylight

In October, the average length of the day is 12h and 17min.
On the first day of October, sunrise is at 05:09 and sunset at 17:20. On the last day of the month, sunrise is at 04:56 and sunset at 17:20 WIB.

Sunshine

October has the most sunshine of the year, with an average of 9.7h of sunshine.

UV index

February, April 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 health risk from unsafe exposure to UV radiation for average individuals.
Note: A daily high UV index of 7 in October leads to these guidelines:
Steer clear of overexposure. Fair-skinned individuals can be scorched 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. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.