October weather forecastCaiuá, Brazil

Weather in October

October, like September, is another hot spring month in Caiuá, Brazil, with an average temperature fluctuating between 20.3°C (68.5°F) and 31.8°C (89.2°F).

Temperature

In Caiuá, October records the highest average temperatures, peaking at 31.8°C (89.2°F) and reaching a low of 20.3°C (68.5°F).

Heat index

The average heat index in October is evaluated at a fiery hot 39°C (102.2°F). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

The average relative humidity in October is 67%.

Rainfall

In October, in Caiuá, the rain falls for 17.1 days. Throughout October, 115mm (4.53") of precipitation is accumulated. In Caiuá, during the entire year, the rain falls for 190.4 days and collects up to 1184mm (46.61") of precipitation.

Daylight

In October, the average length of the day is 12h and 37min.
On the first day of October, sunrise is at 06:08 and sunset at 18:26. On the last day of the month, sunrise is at 05:44 and sunset at 18:39 -03.

Sunshine

In October, the average sunshine is 8.8h.

UV index

The average daily maximum UV index in October is 6. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: In October, the average maximum UV index of 6 translates into the following recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.