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 reports an average high-temperature of a still warm 27.8°C (82°F), slightly varied from December's 28.5°C (83.3°F). São Jerônimo da Serra reports a consistent average low-temperature of 19.2°C (66.6°F) throughout January nights.Heat index
The heat index value for January is appraised at a tropical 33°C (91.4°F). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.Understand that the heat index values take into account shaded locations and mild winds. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
Humidity
January and June, with an average relative humidity of 87%, are the most humid months in São Jerônimo da Serra.Rainfall
The month with the most rainfall is January, when the rain falls for 23.2 days and typically aggregates up to 137mm (5.39") of precipitation.Daylight
The average length of the day in January in São Jerônimo da Serra is 13h and 24min.On the first day of the month, sunrise is at 05:39 and sunset at 19:13. On the last day of January, in São Jerônimo da Serra, Brazil, sunrise is at 06:00 and sunset at 19:11 -03.
Sunshine
The month with the least sunshine in São Jerônimo da Serra is January, with an average of 7.2h of sunshine.UV index
The months with the highest UV index are January through March, August through December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 6 during January translates into these guidelines:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in São Jerônimo da Serra in January?
What is the most humid month in São Jerônimo da Serra?
What is the average humidity in January in São Jerônimo da Serra?
What is the wettest month in São Jerônimo da Serra?
How many days does it rain in January in São Jerônimo da Serra?
What is the average length of the day in January in São Jerônimo da Serra?
When is the sunrise / sunset in January in São Jerônimo da Serra?
What is the month with the least sunshine in São Jerônimo da Serra?
How long on average sun shines in January in São Jerônimo da Serra?
When is the highest UV index in São Jerônimo da Serra?
How high is the UV index in January in São Jerônimo da Serra?
Average temperature in January
São Jerônimo da Serra, Brazil
- Average high temperature in January: 27.8°C
The warmest month (with the highest average high temperature) is October (28.8°C).
The month with the lowest average high temperature is June (21.7°C).
- Average low temperature in January: 19.2°C
The month with the highest average low temperature is February (19.3°C).
The coldest month (with the lowest average low temperature) is July (12.8°C).
Average pressure in January
São Jerônimo da Serra, Brazil
- Average pressure in January: 1011.7mbar
The month with the highest atmospheric pressure is July (1019mbar).
The month with the lowest atmospheric pressure is December (1010.6mbar).
Average wind speed in January
São Jerônimo da Serra, Brazil
- Average wind speed in January: 8.6km/h
The windiest months (with the highest average wind speed) are August and September (11.2km/h).
The calmest month (with the lowest average wind speed) is February (8.5km/h).
Average humidity in January
São Jerônimo da Serra, Brazil
- Average humidity in January: 87%
The months with the highest relative humidity are January and June (87%).
The month with the lowest relative humidity is September (67%).
Average rainfall in January
São Jerônimo da Serra, Brazil
- Average rainfall in January: 137mm
The wettest month (with the highest rainfall) is January (137mm).
The driest month (with the least rainfall) is August (49mm).
Average rainfall days in January
São Jerônimo da Serra, Brazil
- Average rainfall days in January: 23.2 days
The month with the highest number of rainy days is January (23.2 days).
The month with the least rainy days is August (8 days).
Average daylight in January /
Average sunshine in January
São Jerônimo da Serra, Brazil
- Average daylight in January: 13h and 2min
The month with the longest days is December (Average daylight: 13h and 36min).
The month with the shortest days is June (Average daylight: 10h and 42min).
- Average sunshine in January: 7h and 1min
The month with the most sunshine is August (Average sunshine: 9h and 12min).
The month with the least sunshine is January (Average sunshine: 7h and 12min).
Average sunshine days in January
São Jerônimo da Serra, Brazil
- Average sunshine days in January: 6.4 days
The month with the most sunshine days is August (22.1 days).
The month with the least sunshine days is February (4.9 days).
Average UV index in January
São Jerônimo da Serra, Brazil
- Average UV index in January: 6
The months with the highest UV index are January, February, March, August, September, October, November and December (UV index 6).
The month with the lowest UV index is May (UV index 4).
Average cloud cover in January
São Jerônimo da Serra, Brazil
- Average cloud cover in January: 51
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in January
São Jerônimo da Serra, Brazil
- Average visibility in January: 7km
The month with the highest visibility is August (10km).
The month with the lowest visibility is January (7km).
