January weather forecast
Matinhos, Brazil

January, the same as December, is another warm summer month in Matinhos, Brazil, with an average temperature varying between 21.3°C (70.3°F) and 29.4°C (84.9°F).

Temperature

Matinhos's warmest weather arrives in January, when temperatures average a high of 29.4°C (84.9°F) and a low of 21.3°C (70.3°F).

Heat index

January's mean heat index is evaluated at a very hot 36°C (96.8°F). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a measure of how hot it feels when the actual air humidity is factored in. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
Perspiring is a crucial mechanism for the human body, allowing it to release excessive warmth through evaporating sweat. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

January, February and December, with an average relative humidity of 82%, are the least humid months in Matinhos, Brazil.

Rainfall

In Matinhos, Brazil, during January, the rain falls for 23.3 days and regularly aggregates up to 117mm (4.61") of precipitation. Throughout the year, there are 204.4 rainfall days, and 1031mm (40.59") of precipitation is accumulated.

Daylight

In Matinhos, the average length of the day in January is 13h and 32min.
On the first day of January in Matinhos, sunrise is at 05:25 and sunset at 19:09. On the last day of the month, sunrise is at 05:48 and sunset at 19:06 -03.

Sunshine

The months with the most sunshine in Matinhos are January, April and August, with an average of 6.9h of sunshine.

UV index

January through March, November and December, with an average maximum UV index of 6, are months with the highest UV index in Matinhos. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: During January, 6 as the daily maximum UV index converts into the following advice:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.