Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
April
Weather in April
Temperature
April's presence marks an average high-temperature of a still warm 27.4°C (81.3°F), subtly varied from March's 27.3°C (81.1°F). Rialma's nighttime temperature in April falls to an average of 18.4°C (65.1°F).Heat index
The heat index for April is evaluated at a hot 31°C (87.8°F). Unrelenting activity during exposure could cause fatigue and potentially lead to heat cramps.The metrics for the heat index are tailored for both shady environments and light winds. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', reflects the feeling of heat when considering both air temperature and humidity. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
Humidity
The average relative humidity in April is 85%.Rainfall
In Rialma, Brazil, in April, during 24.1 rainfall days, 137mm (5.39") of precipitation is typically accumulated. In Rialma, during the entire year, the rain falls for 219.6 days and collects up to 1537mm (60.51") of precipitation.Daylight
In Rialma, Brazil, the average length of the day in April is 11h and 45min.On the first day of April in Rialma, sunrise is at 06:23 and sunset at 18:20. On the last day of the month, sunrise is at 06:28 and sunset at 18:02 -03.
Sunshine
The average sunshine in April in Rialma is 8.4h.UV index
In April, the average daily maximum UV index in Rialma, Brazil, is 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: An average maximum UV index of 6 in April leads to these recommendations:
Ward off overexposure. Defence against solar harm is crucial. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Rialma in April?
What is the average humidity in April in Rialma?
How much does it rain in Rialma in April?
What is the average length of the day in April in Rialma?
When is the sunrise / sunset in April in Rialma?
How long on average sun shines in April in Rialma?
What is the UV index reading in April in Rialma?
Average temperature in April
Rialma, Brazil
- Average high temperature in April: 27.4°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 April: 18.4°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 April
Rialma, Brazil
- Average pressure in April: 1013.5mbar
The month with the highest atmospheric pressure is July (1017mbar).
The month with the lowest atmospheric pressure is November (1011mbar).
Average wind speed in April
Rialma, Brazil
- Average wind speed in April: 5.7km/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 April
Rialma, Brazil
- Average humidity in April: 85%
The month with the highest relative humidity is March (88%).
The month with the lowest relative humidity is September (40%).
Average rainfall in April
Rialma, Brazil
- Average rainfall in April: 137mm
The wettest month (with the highest rainfall) is November (266mm).
The driest month (with the least rainfall) is July (1mm).
Average rainfall days in April
Rialma, Brazil
- Average rainfall days in April: 24.1 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 April /
Average sunshine in April
Rialma, Brazil
- Average daylight in April: 11h 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 April: 8h and 2min
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 April
Rialma, Brazil
- Average sunshine days in April: 4.9 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 April
Rialma, Brazil
- Average UV index in April: 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 April
Rialma, Brazil
- Average cloud cover in April: 45
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 April
Rialma, Brazil
- Average visibility in April: 8km
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).
