October weather forecast
Manaus, Brazil

October sees the official arrival of the wet season in Manaus. The weather is characterized by average high temperatures of 32.8°C (91°F). High humidity levels, combined with high temperatures, provide classic tropical weather. Despite the onset of the rainy season, the typically short and sharp nature of the showers still allows for enjoyable intervals of sunshine. An umbrella or light waterproof jacket is recommended as short bursts of heavy showers can occur.

Temperature

The commencement of October records an average high-temperature of a still hot 32.8°C (91°F), barely varying from September's 32.9°C (91.2°F). In Manaus, the average nighttime temperature during October is a moderately hot 23.7°C (74.7°F).

Heat index

October's heat index is calculated to be a blazing hot 47°C (116.6°F). Stay alert: Heat cramps and heat exhaustion are expected. Heatstroke is a likely outcome of ongoing activity.
Understand that the heat index values take into account shaded locations and mild winds. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

The average relative humidity in October is 79%.

Rainfall

In Manaus, Brazil, in October, during 9 rainfall days, 113mm (4.45") of precipitation is typically accumulated. In Manaus, during the entire year, the rain falls for 160 days and collects up to 2307mm (90.83") of precipitation.

Daylight

In Manaus, the average length of the day in October is 12h and 11min.
On the first day of the month, sunrise is at 05:45 and sunset at 17:53. On the last day of October, sunrise is at 05:36 and sunset at 17:50 -04.

Sunshine

In October, the average sunshine is 5.5h.

UV index

The months with the highest UV index in Manaus are January through May, August through December, with an average maximum UV index of 12. A UV Index value of 11, and more, symbolizes an ultimate health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily high UV index of 12 during October translates into the following recommendations:
Employ every precaution of importance, unprotected skin and eyes could burn within moments. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Regularly apply and reapply a broad-spectrum sunscreen with a minimum SPF 30 every two hours, or straight after swimming or an outdoor activity.