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 is the coldest month, with an average high-temperature of 27°C (80.6°F) and an average low-temperature of 18.9°C (66°F).Heat index
The heat index value for January is evaluated at a tropical 30°C (86°F). If one remains active during constant exposure, it might cause exhaustion and heat cramps.Heat index readings emphasize conditions of light breezes and shaded spots. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. 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.
Humidity
In Rialma, the average relative humidity in January is 86%.Rainfall
In Rialma, in January, during 29.3 rainfall days, 229mm (9.02") of precipitation is typically accumulated. Throughout the year, there are 219.6 rainfall days, and 1537mm (60.51") of precipitation is accumulated.Daylight
In January, the average length of the day is 12h and 55min.On the first day of January, sunrise is at 05:51 and sunset at 18:52. On the last day of the month, sunrise is at 06:08 and sunset at 18:55 -03.
Sunshine
In Rialma, Brazil, the average sunshine in January is 7h.UV index
In January, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 6 during January translates into the following recommendations:
Beware of overexposure. Fair-skinned individuals risk burning in less than 20 minutes. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year in Rialma?
What are the temperatures in Rialma in January?
What is the average humidity in January in Rialma?
How many days does it rain in January in Rialma?
What is the average length of the day in January in Rialma?
What time are sunrise and sunset in January in Rialma?
How long on average sun shines in January in Rialma?
What is the UV index reading in January in Rialma?
Average temperature in January
Rialma, Brazil
- Average high temperature in January: 27°C
The warmest month (with the highest average high temperature) is September (33.5°C).
The month with the lowest average high temperature is January (27°C).
- Average low temperature in January: 18.9°C
The month with the highest average low temperature is October (21°C).
The coldest month (with the lowest average low temperature) is July (16.1°C).
Average pressure in January
Rialma, Brazil
- Average pressure in January: 1012.2mbar
The month with the highest atmospheric pressure is July (1017mbar).
The month with the lowest atmospheric pressure is November (1011mbar).
Average wind speed in January
Rialma, Brazil
- Average wind speed in January: 5.6km/h
The windiest month (with the highest average wind speed) is August (8.3km/h).
The calmest month (with the lowest average wind speed) is March (5.2km/h).
Average humidity in January
Rialma, Brazil
- Average humidity in January: 86%
The month with the highest relative humidity is March (88%).
The month with the lowest relative humidity is September (40%).
Average rainfall in January
Rialma, Brazil
- Average rainfall in January: 229mm
The wettest month (with the highest rainfall) is November (266mm).
The driest month (with the least rainfall) is July (1mm).
Average rainfall days in January
Rialma, Brazil
- Average rainfall days in January: 29.3 days
The months with the highest number of rainy days are January and December (29.3 days).
The month with the least rainy days is August (1.3 days).
Average daylight in January /
Average sunshine in January
Rialma, Brazil
- Average daylight in January: 12h and 5min
The month with the longest days is December (Average daylight: 13h and 0min).
The month with the shortest days is June (Average daylight: 11h and 12min).
- Average sunshine in January: 7h and 0min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).
Average sunshine days in January
Rialma, Brazil
- Average sunshine days in January: 1.1 days
The month with the most sunshine days is August (29 days).
The months with the least sunshine days are February and November (0.7 days).
Average UV index in January
Rialma, Brazil
- Average UV index in January: 6
The months with the highest UV index are August and September (UV index 7).
The months with the lowest UV index are February and December (UV index 5).
Average cloud cover in January
Rialma, Brazil
- Average cloud cover in January: 55
The month with the most cloud cover is December (Cloud cover 56).
The months with the least cloud cover are July and August (Cloud cover 11).
Average visibility in January
Rialma, Brazil
- Average visibility in January: 7km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, February and March (7km).
