March weather forecast
Santarém, Brazil

The first month of the autumn, March, is still a warm month in Santarém, Brazil, with an average temperature ranging between min 24.1°C (75.4°F) and max 29.8°C (85.6°F).

Temperature

Santarém notes an average high-temperature of a still warm 29.8°C (85.6°F) in March, displaying minor variation from February. In the month of March, Santarém's average low-temperature falls to a still moderately hot 24.1°C (75.4°F).

Heat index

March's mean heat index is evaluated at a sweltering 38°C (100.4°F). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
One should consider that heat index numbers are for shaded settings and light wind. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', determines the feeling of heat when you account for the relative humidity. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

The average relative humidity in March in Santarém is 84%.

Rainfall

In March, in Santarém, the rain falls for 28.8 days. Throughout March, 358mm (14.09") of precipitation is accumulated. In Santarém, during the entire year, the rain falls for 259.2 days and collects up to 2234mm (87.95") of precipitation.

Daylight

In March, the average length of the day is 12h and 7min.
On the first day of the month, sunrise is at 06:46 and sunset at 18:55. On the last day of March, sunrise is at 06:40 and sunset at 18:45 -03.

Sunshine

The average sunshine in March in Santarém, Brazil, is 7h.

UV index

February and March, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for average individuals.
Note: The daily maximum UV index of 6 in March interprets into the following advice:
Stay clear of intense sun exposure. Solar protection is of utmost significance. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.