January weather forecast
Arroio dos Ratos, Brazil

January

Weather in January

January in Arroio dos Ratos, Brazil, is a tropical summer month, with an average temperature varying between 20.2°C (68.4°F) and 30.1°C (86.2°F).

Temperature

January and February bring Arroio dos Ratos's highest average temperatures, reaching a high of 30.1°C (86.2°F).

Heat index

The heat index in January is estimated at a sweltering 37°C (98.6°F). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.
Observations indicate that the heat index values are for shady locations with light wind. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', determines the feeling of heat when you account for the relative humidity. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
When temperatures rise, the human body turns to perspiration, using the cooling power of evaporating sweat. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

In January, the average relative humidity is 75%.

Rainfall

In Arroio dos Ratos, during January, the rain falls for 17 days and regularly aggregates up to 71mm (2.8") of precipitation. In Arroio dos Ratos, during the entire year, the rain falls for 162.4 days and collects up to 881mm (34.69") of precipitation.

Daylight

In January, the average length of the day in Arroio dos Ratos is 13h and 49min.
On the first day of the month, sunrise is at 05:28 and sunset at 19:31. On the last day of January, in Arroio dos Ratos, Brazil, sunrise is at 05:54 and sunset at 19:26 -03.

Sunshine

The average sunshine in January in Arroio dos Ratos is 8.5h.

UV index

The average daily maximum UV index in January in Arroio dos Ratos is 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In January, the maximum UV index of 6 suggests this advice:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. 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. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.

Frequently asked questions

What is the hottest time of year in Arroio dos Ratos?
Arroio dos Ratos's warmest months, January and February, record an average high-temperature of 30.1°C (86.2°F).
How hot is January in Arroio dos Ratos?
In January, the average high-temperature and low-temperature are 30.1°C (86.2°F) and 20.2°C (68.4°F) respectively. The average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, in January is estimated at 37°C (98.6°F).
What is the average humidity in January in Arroio dos Ratos?
The average relative humidity in January in Arroio dos Ratos is 75%.
How many days does it rain in January in Arroio dos Ratos?
In Arroio dos Ratos, Brazil, in January, during 17 rainfall days, 71mm (2.8") of precipitation is typically accumulated.
How many hours of daylight does Arroio dos Ratos have in January?
In January, the average day length in Arroio dos Ratos is 13h and 49min.
When are sunrise and sunset in January in Arroio dos Ratos?
On the first day of January in Arroio dos Ratos, Brazil, sunrise is at 05:28 and sunset at 19:31. On the last day of the month, sunrise is at 05:54 and sunset at 19:26 -03.
How many hours of sunshine does Arroio dos Ratos have in January?
The average sunshine duration in January in Arroio dos Ratos is 8.5h.
How high is the UV index in January in Arroio dos Ratos?
The average daily maximum UV index in January in Arroio dos Ratos, Brazil, is 6. A UV Index reading of 6 to 7 represents a high hazard to health from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in January - Arroio dos Ratos, Brazil
Average temperature in January
Arroio dos Ratos, Brazil
  • Average high temperature in January: 30.1°C

The warmest months (with the highest average high temperature) are January and February (30.1°C).
The month with the lowest average high temperature is July (18.3°C).

  • Average low temperature in January: 20.2°C

The month with the highest average low temperature is February (20.3°C).
The coldest month (with the lowest average low temperature) is July (10.5°C).

Average pressure in January - Arroio dos Ratos, Brazil
Average pressure in January
Arroio dos Ratos, Brazil
  • Average pressure in January: 1012.2mbar

The month with the highest atmospheric pressure is July (1019.8mbar).
The month with the lowest atmospheric pressure is December (1011.4mbar).

Average wind speed in January - Arroio dos Ratos, Brazil
Average wind speed in January
Arroio dos Ratos, Brazil
  • Average wind speed in January: 12.4km/h

The windiest month (with the highest average wind speed) is October (13km/h).
The calmest month (with the lowest average wind speed) is May (10.7km/h).

Average humidity in January - Arroio dos Ratos, Brazil
Average humidity in January
Arroio dos Ratos, Brazil
  • Average humidity in January: 75%

The month with the highest relative humidity is June (82%).
The month with the lowest relative humidity is December (73%).

Average rainfall in January - Arroio dos Ratos, Brazil
Average rainfall in January
Arroio dos Ratos, Brazil
  • Average rainfall in January: 71mm

The wettest month (with the highest rainfall) is July (101mm).
The driest month (with the least rainfall) is April (46mm).

Average rainfall days in January - Arroio dos Ratos, Brazil
Average rainfall days in January
Arroio dos Ratos, Brazil
  • Average rainfall days in January: 17 days

The month with the highest number of rainy days is January (17 days).
The month with the least rainy days is June (10.9 days).

Average daylight in January / Average sunshine in January - Arroio dos Ratos, Brazil
Average daylight in January /
Average sunshine in January
Arroio dos Ratos, Brazil
  • Average daylight in January: 13h and 5min

The month with the longest days is December (Average daylight: 14h and 0min).
The month with the shortest days is June (Average daylight: 10h and 12min).

  • Average sunshine in January: 8h and 3min

The month with the most sunshine is December (Average sunshine: 8h and 36min).
The month with the least sunshine is September (Average sunshine: 7h and 18min).

Average sunshine days in January - Arroio dos Ratos, Brazil
Average sunshine days in January
Arroio dos Ratos, Brazil
  • Average sunshine days in January: 12.6 days

The month with the most sunshine days is May (18.1 days).
The month with the least sunshine days is February (12.3 days).

Average UV index in January - Arroio dos Ratos, Brazil
Average UV index in January
Arroio dos Ratos, Brazil
  • Average UV index in January: 6

The month with the highest UV index is December (UV index 7).
The months with the lowest UV index are May, June and July (UV index 4).

Average cloud cover in January - Arroio dos Ratos, Brazil
Average cloud cover in January
Arroio dos Ratos, Brazil
  • Average cloud cover in January: 33

The month with the most cloud cover is September (Cloud cover 39).
The month with the least cloud cover is November (Cloud cover 29).

Average visibility in January - Arroio dos Ratos, Brazil
Average visibility in January
Arroio dos Ratos, Brazil
  • Average visibility in January: 9km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).

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