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
January
Weather in January
Temperature
January denotes a minimal variation in the average high-temperature to a still hot 32.1°C (89.8°F) from December's 33.6°C (92.5°F). Throughout the nights in January, an average low-temperature of 22.1°C (71.8°F) is noted.Heat index
The heat index value for January is appraised at a blistering 40°C (104°F). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.Heat index details are generally centered around shaded locations and a mild breeze. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.
Humidity
In São José do Piauí, the average relative humidity in January is 68%.Rainfall
In January, the rain falls for 24.2 days. Throughout January, 143mm (5.63") of precipitation is accumulated. In São José do Piauí, during the entire year, the rain falls for 152.5 days and collects up to 872mm (34.33") of precipitation.Daylight
In São José do Piauí, the average length of the day in January is 12h and 28min.On the first day of January, sunrise is at 05:33 and sunset at 18:04. On the last day of the month, sunrise is at 05:46 and sunset at 18:11 -03.
Sunshine
In January, the average sunshine is 9.7h.UV index
The average daily maximum UV index in January is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average UV index of 7 in January transforms into this advice:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in January?
What is the average humidity in January?
How many days does it rain in January?
What is the average length of the day in January?
When are sunrise and sunset in January?
How many hours of sunshine does São José do Piauí have in January?
How high is the UV index in January?
Average temperature in January
São José do Piauí, Brazil
- Average high temperature in January: 32.1°C
The warmest month (with the highest average high temperature) is October (36°C).
The months with the lowest average high temperature are March and April (31.3°C).
- Average low temperature in January: 22.1°C
The month with the highest average low temperature is November (24.9°C).
The coldest month (with the lowest average low temperature) is July (19.8°C).
Average pressure in January
São José do Piauí, Brazil
- Average pressure in January: 1011.2mbar
The month with the highest atmospheric pressure is July (1014.8mbar).
The month with the lowest atmospheric pressure is November (1009.5mbar).
Average wind speed in January
São José do Piauí, Brazil
- Average wind speed in January: 9km/h
The windiest month (with the highest average wind speed) is July (16.9km/h).
The calmest month (with the lowest average wind speed) is March (8.1km/h).
Average humidity in January
São José do Piauí, Brazil
- Average humidity in January: 68%
The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is September (42%).
Average rainfall in January
São José do Piauí, Brazil
- Average rainfall in January: 143mm
The wettest month (with the highest rainfall) is March (200mm).
The driest month (with the least rainfall) is August (0mm).
Average rainfall days in January
São José do Piauí, Brazil
- Average rainfall days in January: 24.2 days
The month with the highest number of rainy days is March (26.8 days).
The month with the least rainy days is August (0.3 days).
Average daylight in January /
Average sunshine in January
São José do Piauí, Brazil
- Average daylight in January: 12h and 3min
The month with the longest days is December (Average daylight: 12h and 30min).
The month with the shortest days is June (Average daylight: 11h and 42min).
- Average sunshine in January: 9h and 4min
The months with the most sunshine are August and September (Average sunshine: 9h and 54min).
The month with the least sunshine is April (Average sunshine: 7h and 36min).
Average sunshine days in January
São José do Piauí, Brazil
- Average sunshine days in January: 5.3 days
The month with the most sunshine days is August (30.5 days).
The month with the least sunshine days is March (3.3 days).
Average UV index in January
São José do Piauí, Brazil
- Average UV index in January: 7
The months with the highest UV index are September and October (UV index 8).
The months with the lowest UV index are February and April (UV index 6).
Average cloud cover in January
São José do Piauí, Brazil
- Average cloud cover in January: 44
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in January
São José do Piauí, Brazil
- Average visibility in January: 9km
The months with the highest visibility are May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March and April (9km).
