Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
The warmest period, with an average high-temperature of 30.7°C (87.3°F), falls in January and February.Heat index
The heat index for January is appraised at a torrid 37°C (98.6°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.It is worth noting that heat index values are gauged for conditions in the shade and light breezes. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. The influence of weather can be personal, changing with an individual's body mass, height, and level 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 highly critical for babies and toddlers. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.
Humidity
In January, the average relative humidity is 72%.Rainfall
In January, the rain falls for 14.3 days. Throughout January, 83mm (3.27") of precipitation is accumulated. In Silveira Martins, during the entire year, the rain falls for 146.4 days and collects up to 974mm (38.35") of precipitation.Daylight
In January, the average length of the day is 13h and 47min.On the first day of January in Silveira Martins, sunrise is at 05:37 and sunset at 19:38. On the last day of the month, sunrise is at 06:02 and sunset at 19:32 -03.
Sunshine
In January, the average sunshine is 8.6h.UV index
With an average maximum UV index of 7, January is the month with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.Note: The maximum UV index of 7 during January leads to these instructions:
Guard oneself from overexposure. Defence against sun injury is vital. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Frequently asked questions
What month is the hottest in Silveira Martins?
How hot is January in Silveira Martins?
What is the average humidity in January in Silveira Martins?
How much does it rain in Silveira Martins in January?
What is the average length of the day in January in Silveira Martins?
When are sunrise and sunset in January in Silveira Martins?
How many hours of sunshine does Silveira Martins have in January?
What is the month with the highest UV index in Silveira Martins?
What is the UV index reading in January in Silveira Martins?
Average temperature in January
Silveira Martins, Brazil
- Average high temperature in January: 30.7°C
The warmest months (with the highest average high temperature) are January and February (30.7°C).
The month with the lowest average high temperature is July (18.1°C).
- Average low temperature in January: 19°C
The month with the highest average low temperature is January (19°C).
The coldest month (with the lowest average low temperature) is July (8.9°C).
Average pressure in January
Silveira Martins, Brazil
- Average pressure in January: 1011.3mbar
The month with the highest atmospheric pressure is July (1019.3mbar).
The month with the lowest atmospheric pressure is December (1010.4mbar).
Average wind speed in January
Silveira Martins, Brazil
- Average wind speed in January: 12.3km/h
The windiest months (with the highest average wind speed) are September and October (13.4km/h).
The calmest month (with the lowest average wind speed) is April (11km/h).
Average humidity in January
Silveira Martins, Brazil
- Average humidity in January: 72%
The months with the highest relative humidity are May and June (83%).
The month with the lowest relative humidity is December (70%).
Average rainfall in January
Silveira Martins, Brazil
- Average rainfall in January: 83mm
The wettest month (with the highest rainfall) is October (128mm).
The driest month (with the least rainfall) is March (55mm).
Average rainfall days in January
Silveira Martins, Brazil
- Average rainfall days in January: 14.3 days
The month with the highest number of rainy days is January (14.3 days).
The month with the least rainy days is April (10.8 days).
Average daylight in January /
Average sunshine in January
Silveira Martins, 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 18min).
- Average sunshine in January: 8h and 4min
The month with the most sunshine is December (Average sunshine: 8h and 42min).
The month with the least sunshine is June (Average sunshine: 7h and 12min).
Average sunshine days in January
Silveira Martins, Brazil
- Average sunshine days in January: 15.1 days
The month with the most sunshine days is March (18.9 days).
The month with the least sunshine days is February (14.1 days).
Average UV index in January
Silveira Martins, Brazil
- Average UV index in January: 7
The month with the highest UV index is January (UV index 7).
The months with the lowest UV index are May, June and July (UV index 4).
Average cloud cover in January
Silveira Martins, Brazil
- Average cloud cover in January: 33
The month with the most cloud cover is May (Cloud cover 39).
The month with the least cloud cover is November (Cloud cover 29).
Average visibility in January
Silveira Martins, 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).
Silveira Martins, Brazil
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