January weather forecast
Altamira, Brazil

January, the same as December, in Altamira, Brazil, is another hot summer month, with an average temperature varying between 30.7°C (87.3°F) and 22.2°C (72°F).

Temperature

The advent of January observes an average high-temperature of a still hot 30.7°C (87.3°F), nearly identical to December's 32.4°C (90.3°F). Altamira experiences an average low-temperature of 22.2°C (72°F) in month of January.

Heat index

The heat index value for January is evaluated at a blistering 42°C (107.6°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

In January, the average relative humidity is 86%.

Rainfall

In Altamira, Brazil, in January, during 28.9 rainfall days, 172mm (6.77") of precipitation is typically accumulated. In Altamira, during the entire year, the rain falls for 260.4 days and collects up to 1317mm (51.85") of precipitation.

Daylight

The average length of the day in January in Altamira is 12h and 17min.
On the first day of the month, sunrise is at 06:23 and sunset at 18:41. On the last day of January, in Altamira, sunrise is at 06:34 and sunset at 18:49 -03.

Sunshine

In January, the average sunshine is 6.1h.

UV index

January through May, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.
Note: A maximum high UV index of 6 in January translates into the following recommendations:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.