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
São João da Boa Vista, Brazil, experiences an average high-temperature of a still warm 25.9°C (78.6°F) in January, subtly different from December's 26.8°C (80.2°F). January witnesses an average nighttime temperature of 18°C (64.4°F) in São João da Boa Vista.Humidity
The average relative humidity in January is 87%.Rainfall
The month with the most rainfall is January, when the rain falls for 29.5 days and typically aggregates up to 263mm (10.35") of precipitation.Daylight
The average length of the day in January is 13h and 18min.On the first day of January in São João da Boa Vista, sunrise is at 05:27 and sunset at 18:54. On the last day of the month, sunrise is at 05:47 and sunset at 18:53 -03.
Sunshine
With an average of 7.2h of sunshine, January has the least sunshine of the year.UV index
The months with the lowest UV index are January through July, September through December, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum daily UV index of 5 during January morphs into the following directions:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 João da Boa Vista in January?
What is the average humidity in January in São João da Boa Vista?
What is the rainiest month in São João da Boa Vista?
How many days does it rain in January in São João da Boa Vista?
What is the average length of the day in January in São João da Boa Vista?
What time are sunrise and sunset in January in São João da Boa Vista?
What is the month with the least sunshine in São João da Boa Vista?
How many hours of sunshine does São João da Boa Vista have in January?
What are the months with the lowest UV index in São João da Boa Vista?
What is the UV index intensity in January in São João da Boa Vista?
Average temperature in January
São João da Boa Vista, Brazil
- Average high temperature in January: 25.9°C
The warmest months (with the highest average high temperature) are September and October (27.7°C).
The month with the lowest average high temperature is June (21.9°C).
- Average low temperature in January: 18°C
The month with the highest average low temperature is December (18.2°C).
The coldest months (with the lowest average low temperature) are June and July (12.3°C).
Average pressure in January
São João da Boa Vista, Brazil
- Average pressure in January: 1013.3mbar
The month with the highest atmospheric pressure is July (1020.3mbar).
The month with the lowest atmospheric pressure is December (1012.2mbar).
Average wind speed in January
São João da Boa Vista, Brazil
- Average wind speed in January: 6.9km/h
The windiest month (with the highest average wind speed) is September (8.5km/h).
The calmest month (with the lowest average wind speed) is March (6.4km/h).
Average humidity in January
São João da Boa Vista, Brazil
- Average humidity in January: 87%
The month with the highest relative humidity is March (88%).
The month with the lowest relative humidity is September (64%).
Average rainfall in January
São João da Boa Vista, Brazil
- Average rainfall in January: 263mm
The wettest month (with the highest rainfall) is January (263mm).
The driest month (with the least rainfall) is August (17mm).
Average rainfall days in January
São João da Boa Vista, Brazil
- Average rainfall days in January: 29.5 days
The month with the highest number of rainy days is December (29.7 days).
The month with the least rainy days is August (7 days).
Average daylight in January /
Average sunshine in January
São João da Boa Vista, Brazil
- Average daylight in January: 13h and 2min
The month with the longest days is December (Average daylight: 13h and 30min).
The month with the shortest days is June (Average daylight: 10h and 48min).
- Average sunshine in January: 7h and 1min
The month with the most sunshine is September (Average sunshine: 9h and 18min).
The month with the least sunshine is January (Average sunshine: 7h and 12min).
Average sunshine days in January
São João da Boa Vista, Brazil
- Average sunshine days in January: 1 days
The month with the most sunshine days is August (23.3 days).
The months with the least sunshine days are January and December (1 days).
Average UV index in January
São João da Boa Vista, Brazil
- Average UV index in January: 5
The month with the highest UV index is August (UV index 6).
The months with the lowest UV index are January, February, March, April, May, June, July, September, October, November and December (UV index 5).
Average cloud cover in January
São João da Boa Vista, Brazil
- Average cloud cover in January: 55
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in January
São João da Boa Vista, Brazil
- Average visibility in January: 7km
The month with the highest visibility is August (10km).
The months with the lowest visibility are January, February, March, April and May (7km).
