October weather forecastJanuária, Brazil

Weather in October

October, like September, is another hot spring month in Januária, Brazil, with an average temperature fluctuating between 32.7°C (90.9°F) and 20.5°C (68.9°F).

Temperature

The advent of October brings an average high-temperature of a still tropical 32.7°C (90.9°F), exhibiting minor difference from the previous month. Januária's temperature in October declines substantially from daytime highs, settling at a consistent average of 20.5°C (68.9°F) during the nights.

Heat index

The heat index value during October is appraised at a very hot 38°C (100.4°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
Records show heat index calculations are tailored for shaded regions and mild winds. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. 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 primarily vital for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

The average relative humidity in October is 57%.

Rainfall

In Januária, during October, the rain falls for 13.2 days and regularly aggregates up to 81mm (3.19") of precipitation. Throughout the year, in Januária, there are 145.3 rainfall days, and 689mm (27.13") of precipitation is accumulated.

Daylight

In October, the average length of the day is 12h and 27min.
On the first day of the month, sunrise is at 05:39 and sunset at 17:54. On the last day of October, in Januária, Brazil, sunrise is at 05:21 and sunset at 18:01 -03.

Sunshine

In Januária, the average sunshine in October is 8.8h.

UV index

The months with the lowest UV index in Januária are January through July, October through December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In October, a daily maximum UV index of 6 leads to the following instructions:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.