October weather forecast
Vigia, Brazil

October, like September, is another hot spring month in Vigia, Brazil, with temperature in the range of an average low of 25°C (77°F) and an average high of 31.5°C (88.7°F).

Temperature

October is Vigia's warmest month, registering average high temperatures of 31.5°C (88.7°F) and lows of 25°C (77°F).

Heat index

The average heat index in October is computed to be a scorching 41°C (105.8°F). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. 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. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values remain especially vital for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

October and November, with an average relative humidity of 76%, are the least humid months in Vigia.

Rainfall

The month with the least rainfall is October, when the rain falls for 18.8 days and typically collects 41mm (1.61") of precipitation.

Sea temperature

The month with the coldest seawater in Vigia is October, with an average sea temperature of 28.4°C (83.1°F).
Note: With water temperature from 25°C (77°F) to 29°C (84.2°F), all water activities are comfortable and delightful, devoid of discomfort even for lengthened periods.

Daylight

In October, the average length of the day in Vigia is 12h and 8min.
On the first day of October, sunrise is at 05:58 and sunset at 18:05. On the last day of the month, sunrise is at 05:51 and sunset at 18:00 -03.

Sunshine

The month with the most sunshine is October, with an average of 10.4h of sunshine.

UV index

The months with the highest UV index in Vigia are January, June through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.
Note: A daily maximum UV index of 7 in October translates into the following instructions:
Resist overexposure. Safeguarding from solar damage is indispensable. 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. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Alert! Sand and water increase UV exposure due to their reflective properties.