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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Climate and monthly weather forecast
Weather in January
January, the same as December, is a moderately hot summer month in Rialma, Brazil, with an average temperature ranging between min 18.9°C (66°F) and max 27°C (80.6°F). 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). The heat index value for January is evaluated at a tropical 30°C (86°F). Weather in January »
Weather in February
February, the last month of the summer in Rialma, is also a moderately hot month, with an average temperature fluctuating between 27.3°C (81.1°F) and 18.8°C (65.8°F). The arrival of February brings an average high-temperature of a still warm 27.3°C (81.1°F), nearly identical to January's 27°C (80.6°F). Weather in February »
Weather in March
The first month of the autumn, March, is also a moderately hot month in Rialma, Brazil, with an average temperature varying between 19°C (66.2°F) and 27.3°C (81.1°F). March's climate reveals an average high-temperature of a still warm 27.3°C (81.1°F), consistent with February. Weather in March »
Weather in April
April, like March, in Rialma, Brazil, is another warm autumn month, with temperature in the range of an average high of 27.4°C (81.3°F) and an average low of 18.4°C (65.1°F). 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). Weather in April »
Weather in May
May, the last month of the autumn in Rialma, is another warm month, with an average temperature ranging between min 17.2°C (63°F) and max 27.2°C (81°F). May brings an average high-temperature of a still warm 27.2°C (81°F), showing a slight difference from April's 27.4°C (81.3°F). Weather in May »
Weather in June
June, the first month of the winter in Rialma, is still a warm month, with an average temperature varying between 27.3°C (81.1°F) and 16.4°C (61.5°F). The transition into June shows a subtle variation to a still moderately hot 27.3°C (81.1°F) from May's 27.2°C (81°F) in the average high-temperature. Weather in June »
Weather in July
July, like June, in Rialma, Brazil, is another warm winter month, with an average temperature ranging between max 28.9°C (84°F) and min 16.1°C (61°F). Transitioning from June to July, Rialma observes an average high-temperature of a still warm 28.9°C (84°F), differing subtly from the previous month. Weather in July »
Weather in August
The last month of the winter, August, is a tropical month in Rialma, Brazil, with an average temperature varying between 31.7°C (89.1°F) and 17.8°C (64°F). The transition into August reveals an average high-temperature of a tropical 31.7°C (89.1°F), mirroring a close resemblance to July. Weather in August »
Weather in September
The first month of the spring, September, is still a tropical month in Rialma, Brazil, with an average temperature varying between 33.5°C (92.3°F) and 20.4°C (68.7°F). September, recording an average high temperature of 33.5°C (92.3°F) and a low temperature of 20.4°C (68.7°F), is Rialma's warmest month. The heat index value for September is evaluated at a sweltering 35°C (95°F). Weather in September »
Weather in October
October, the same as September, in Rialma, Brazil, is another tropical spring month, with an average temperature fluctuating between 31.5°C (88.7°F) and 21°C (69.8°F). The advent of October signifies a minor shift to an average high-temperature of a still hot 31.5°C (88.7°F), aligning closely with September. Weather in October »
Weather in November
The last month of the spring, November, is another warm month in Rialma, Brazil, with an average temperature ranging between max 27.7°C (81.9°F) and min 19.9°C (67.8°F). November implies a soft temperature shift, with average high-temperatures reducing from October's tropical 31.5°C (88.7°F) to a warm 27.7°C (81.9°F). Weather in November »
Weather in December
The first month of the summer, December, is still a warm month in Rialma, Brazil, with an average temperature varying between 27.2°C (81°F) and 19.3°C (66.7°F). Rialma observes a minor difference in average high-temperatures between November's 27.7°C (81.9°F) and December's 27.2°C (81°F). Weather in December »
Updated: Feb 2, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year in Rialma?
Rialma notes the coldest temperatures in January, with a average high of 27°C (80.6°F) and a low of 18.9°C (66°F).
How much does it rain in Rialma?
In Rialma, Brazil, during the entire year, the rain falls for 219.6 days and collects up to 1537mm (60.51") of precipitation.
What is the month with the lowest UV index in Rialma?
The months with the lowest UV index are February and December, with an average maximum UV index of 5.
What is the most humid month in Rialma?
With an average relative humidity of 88%, March is the most humid month in Rialma, Brazil.
What is the month with the shortest days in Rialma?
The month with the shortest days in Rialma is June, with an average of 11h and 12min of daylight.
What is the driest month in Rialma?
July is the month with the least rainfall in Rialma. Rain falls for 1.8 days and accumulates 1mm (0.04") of precipitation.
What is the month with the most sunshine in Rialma?
July and August, with an average of 9.9h of sunshine, are months with the most sunshine in Rialma, Brazil.
When is the highest UV index in Rialma?
August and September, with an average maximum UV index of 7, are months with the highest UV index.
What month is the hottest in Rialma?
In Rialma, the peak temperatures are generally noted in September, averaging a high of 33.5°C (92.3°F) and a low of 20.4°C (68.7°F).
What is the least humid month in Rialma?
The least humid month in Rialma, Brazil, is September, with an average relative humidity of 40%.
What is the rainiest month in Rialma?
November is the month with the most rainfall. Rain falls for 28.6 days and accumulates 266mm (10.47") of precipitation.
When are the longest days in Rialma?
With an average of 13h and 0min of daylight, December has the longest days of the year.
Is there Daylight Saving Time (DST) in Rialma?
Rialma, Brazil, does not observe Daylight Saving Time (DST). -03 timezone is used over the entire year.
What is the month with the least sunshine in Rialma?
December has the least sunshine of the year in Rialma, Brazil, with an average of 6.9h of sunshine.
Average temperature
Rialma, Brazil
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).
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
Rialma, Brazil
- Average pressure in January:
1012.2mbar - Average pressure in February:
1012.2mbar - Average pressure in March:
1012.4mbar - Average pressure in April:
1013.5mbar - Average pressure in May:
1015.1mbar - Average pressure in June:
1016.8mbar
- Average pressure in July:
1017mbar - Average pressure in August:
1015.7mbar - Average pressure in September:
1013.5mbar - Average pressure in October:
1011.5mbar - Average pressure in November:
1011mbar - Average pressure in December:
1011.4mbar
The month with the highest atmospheric pressure is July (1017mbar).
The month with the lowest atmospheric pressure is November (1011mbar).
Average wind speed
Rialma, Brazil
- Average wind speed in January:
5.6km/h - Average wind speed in February:
5.3km/h - Average wind speed in March:
5.2km/h - Average wind speed in April:
5.7km/h - Average wind speed in May:
6.4km/h - Average wind speed in June:
7.3km/h
- Average wind speed in July:
8.2km/h - Average wind speed in August:
8.3km/h - Average wind speed in September:
8.1km/h - Average wind speed in October:
7km/h - Average wind speed in November:
5.9km/h - Average wind speed in December:
5.9km/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
Rialma, Brazil
The month with the highest relative humidity is March (88%).
The month with the lowest relative humidity is September (40%).
Average rainfall
Rialma, Brazil
- Average rainfall in January:
229mm - Average rainfall in February:
224mm - Average rainfall in March:
215mm - Average rainfall in April:
137mm - Average rainfall in May:
39mm - Average rainfall in June:
10mm
The wettest month (with the highest rainfall) is November (266mm).
The driest month (with the least rainfall) is July (1mm).
Average rainfall days
Rialma, Brazil
- Average rainfall days in January:
29.3 days - Average rainfall days in February:
26.7 days - Average rainfall days in March:
29.2 days - Average rainfall days in April:
24.1 days - Average rainfall days in May:
14.1 days - Average rainfall days in June:
5.8 days
- Average rainfall days in July:
1.8 days - Average rainfall days in August:
1.3 days - Average rainfall days in September:
7.9 days - Average rainfall days in October:
21.5 days - Average rainfall days in November:
28.6 days - Average rainfall days in December:
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 / Average sunshine
Rialma, Brazil
- Average daylight in January:
12h and 5min - Average daylight in February:
12h and 4min - Average daylight in March:
12h and 1min - Average daylight in April:
11h and 5min - Average daylight in May:
11h and 2min - Average daylight in June:
11h and 1min
- Average daylight in July:
11h and 2min - Average daylight in August:
11h and 4min - Average daylight in September:
12h and 0min - Average daylight in October:
12h and 3min - Average daylight in November:
12h and 5min - Average daylight in December:
13h and 0min
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 - Average sunshine in February:
7h and 4min - Average sunshine in March:
7h and 4min - Average sunshine in April:
8h and 2min - Average sunshine in May:
9h and 2min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 4min - Average sunshine in October:
9h and 0min - Average sunshine in November:
7h and 3min - Average sunshine in December:
6h and 5min
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
Rialma, Brazil
- Average sunshine days in January:
1.1 days - Average sunshine days in February:
0.7 days - Average sunshine days in March:
1.6 days - Average sunshine days in April:
4.9 days - Average sunshine days in May:
14.9 days - Average sunshine days in June:
22.2 days
- Average sunshine days in July:
28.8 days - Average sunshine days in August:
29 days - Average sunshine days in September:
21.3 days - Average sunshine days in October:
9 days - Average sunshine days in November:
0.7 days - Average sunshine days in December:
1.5 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
Rialma, Brazil
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
Rialma, Brazil
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
Rialma, Brazil
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).
