January weather forecastMarilac, Brazil

January

Weather in January

January, like December, in Marilac, Brazil, is another warm summer month, with an average temperature varying between 20.1°C (68.2°F) and 29.8°C (85.6°F).

Temperature

Stepping into January, Marilac records an average high-temperature of a still warm 29.8°C (85.6°F), almost consistent with December. Throughout January, Marilac's nights cool down to an average of 20.1°C (68.2°F).

Heat index

January's mean heat index is estimated at a sweltering 38°C (100.4°F). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', combines both the air temperature and the humidity level to give a perceived human temperature. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

In Marilac, the average relative humidity in January is 83%.

Rainfall

In Marilac, in January, it is raining for 19.9 days, with typically 130mm (5.12") of accumulated precipitation. Throughout the year, there are 184.4 rainfall days, and 899mm (35.39") of precipitation is accumulated.

Daylight

In January, the average length of the day is 13h and 5min.
On the first day of the month, sunrise is at 05:15 and sunset at 18:28. On the last day of January, sunrise is at 05:33 and sunset at 18:29 -03.

Sunshine

The average sunshine in January is 7.5h.

UV index

The months with the highest UV index are January through May, August through December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: An average maximum UV index of 6 in January leads to these recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.

Updated: Jul 29, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

During January, Marilac experiences an average high-temperature of 29.8°C (85.6°F) and a low-temperature of 20.1°C (68.2°F). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in January is estimated at 38°C (100.4°F).

In Marilac, the average relative humidity in January is 83%.

In Marilac, Brazil, in January, it is raining for 19.9 days, with typically 130mm (5.12") of accumulated precipitation.

In January, the average day length in Marilac is 13h and 5min.

On the first day of January in Marilac, sunrise is at 05:15 and sunset at 18:28. On the last day of the month, sunrise is at 05:33 and sunset at 18:29 -03.

The average sunshine duration in January is 7.5h.

The months with the highest UV index are January through May, August through December, with an average maximum UV index of 6.

In Marilac, the average daily maximum UV index in January is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year January F M A M J J A S O N D

Dec

January

Feb

Average high temperature

28.8°C

29.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

6.7km/h

6.6km/h

5.9km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

8.7

6.1

Average UV index

Average cloud cover

Average visibility

Average temperature in January
Marilac, Brazil

Average high temperature in January: 29.8°C

The warmest month (with the highest average high temperature) is October (30°C).
The month with the lowest average high temperature is June (25.8°C).

Average low temperature in January: 20.1°C

The month with the highest average low temperature is December (20.5°C).
The coldest month (with the lowest average low temperature) is July (15.8°C).

Average pressure in January
Marilac, Brazil

Average pressure in January: 1014.1mbar

The month with the highest atmospheric pressure is July (1021mbar).
The month with the lowest atmospheric pressure is December (1013mbar).

Average wind speed in January
Marilac, Brazil

Average wind speed in January: 6km/h

The windiest month (with the highest average wind speed) is October (7.8km/h).
The calmest month (with the lowest average wind speed) is May (4.4km/h).

Average humidity in January
Marilac, Brazil

Average humidity in January: 83%

The month with the highest relative humidity is December (85%).
The month with the lowest relative humidity is September (66%).

Average rainfall in January
Marilac, Brazil

Average rainfall in January: 130mm

The wettest month (with the highest rainfall) is December (185mm).
The driest month (with the least rainfall) is July (6mm).

Average rainfall days in January
Marilac, Brazil

Average rainfall days in January: 19.9 days

The month with the highest number of rainy days is December (23.4 days).
The month with the least rainy days is August (6.7 days).

Average daylight in January /
Average sunshine in January
Marilac, Brazil

Average daylight in January: 13h and 6min

The month with the longest days is December (Average daylight: 13h and 12min).
The month with the shortest days is June (Average daylight: 11h and 0min).

Average sunshine in January: 7h and 30min

The month with the most sunshine is September (Average sunshine: 8h and 6min).
The month with the least sunshine is November (Average sunshine: 6h and 30min).

Average sunshine days in January
Marilac, Brazil

Average sunshine days in January: 8.7 days

The month with the most sunshine days is August (21.3 days).
The month with the least sunshine days is December (5 days).

Average UV index in January
Marilac, Brazil

Average UV index in January: 6

The months with the highest UV index are January, February, March, April, May, August, September, October, November and December (UV index 6).
The months with the lowest UV index are June and July (UV index 5).

Average cloud cover in January
Marilac, Brazil

Average cloud cover in January: 53

The month with the most cloud cover is November (Cloud cover 58).
The month with the least cloud cover is September (Cloud cover 37).

Average visibility in January
Marilac, Brazil

Average visibility in January: 7km

The month with the highest visibility is September (10km).
The months with the lowest visibility are January, February, March, April and December (7km).