December weather forecastDianópolis, Brazil

December

Weather in December

December, the first month of the summer in Dianópolis, is also a moderately hot month, with temperature in the range of an average high of 28.8°C (83.8°F) and an average low of 20.4°C (68.7°F).

Temperature

With the advent of December, Dianópolis experiences an average high-temperature of a still warm 28.8°C (83.8°F), mirroring a close resemblance to the previous month. The temperature lowers to an average of 20.4°C (68.7°F) during December nights.

Heat index

For most parts of December, the heat index is appraised at a hot 34°C (93.2°F). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is the outcome of merging air's temperature and its humidity metrics. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.

Humidity

In December, the average relative humidity in Dianópolis, Brazil, is 77%.

Rainfall

In December, the rain falls for 25 days. Throughout December, 171mm (6.73") of precipitation is accumulated. In Dianópolis, during the entire year, the rain falls for 189.7 days and collects up to 1222mm (48.11") of precipitation.

Daylight

December has the longest days of the year, with an average of 12h and 48min of daylight.
On the first day of December, sunrise is at 05:33 and sunset at 18:19. On the last day of the month, sunrise is at 05:46 and sunset at 18:34 -03.

Sunshine

In December, the average sunshine in Dianópolis is 9.5h.

UV index

The months with the lowest UV index in Dianópolis are January through July, October through December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: A daily high UV index of 6 in December leads to these guidelines:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Boost your sun resistance with garments that are densely woven yet spacious.

Updated: Feb 2, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

During December, Dianópolis experiences an average high-temperature of 28.8°C (83.8°F) and a low-temperature of 20.4°C (68.7°F). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines air temperature and relative humidity, in December is appraised at 34°C (93.2°F).

In December, the average relative humidity is 77%.

In Dianópolis, in December, during 25 rainfall days, 171mm (6.73") of precipitation is typically accumulated.

The month with the longest days is December, with an average of 12h and 48min of daylight.

The average day length in December in Dianópolis is 12h and 48min.

On the first day of December in Dianópolis, Brazil, sunrise is at 05:33 and sunset at 18:19. On the last day of the month, sunrise is at 05:46 and sunset at 18:34 -03.

In December, the average sunshine duration in Dianópolis, Brazil, is 9.5h.

January through July, October through December, with an average maximum UV index of 6, are months with the lowest UV index in Dianópolis.

In December, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

29.3°C

28.8°C

28.3°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

8.8km/h

8.3km/h

7.5km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

4.2

5.2

4.2

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Dianópolis, Brazil

Average high temperature in December: 28.8°C

The warmest month (with the highest average high temperature) is September (33.9°C).
The months with the lowest average high temperature are January, April and May (28.3°C).

Average low temperature in December: 20.4°C

The month with the highest average low temperature is October (22.3°C).
The coldest month (with the lowest average low temperature) is July (18.4°C).

Average pressure in December
Dianópolis, Brazil

Average pressure in December: 1011.3mbar

The month with the highest atmospheric pressure is July (1016.4mbar).
The month with the lowest atmospheric pressure is November (1010.8mbar).

Average wind speed in December
Dianópolis, Brazil

Average wind speed in December: 7.5km/h

The windiest month (with the highest average wind speed) is August (12.8km/h).
The calmest month (with the lowest average wind speed) is March (6km/h).

Average humidity in December
Dianópolis, Brazil

Average humidity in December: 77%

The month with the highest relative humidity is March (82%).
The month with the lowest relative humidity is September (37%).

Average rainfall in December
Dianópolis, Brazil

Average rainfall in December: 171mm

The wettest month (with the highest rainfall) is March (207mm).
The driest month (with the least rainfall) is July (0mm).

Average rainfall days in December
Dianópolis, Brazil

Average rainfall days in December: 25 days

The month with the highest number of rainy days is March (28 days).
The month with the least rainy days is August (0.6 days).

Average daylight in December /
Average sunshine in December
Dianópolis, Brazil

Average daylight in December: 12h and 48min

The month with the longest days is December (Average daylight: 12h and 48min).
The month with the shortest days is June (Average daylight: 11h and 30min).

Average sunshine in December: 9h and 30min

The month with the most sunshine is October (Average sunshine: 10h and 54min).
The month with the least sunshine is May (Average sunshine: 7h and 0min).

Average sunshine days in December
Dianópolis, Brazil

Average sunshine days in December: 5.2 days

The month with the most sunshine days is July (30.3 days).
The month with the least sunshine days is March (2.3 days).

Average UV index in December
Dianópolis, Brazil

Average UV index in December: 6

The months with the highest UV index are August and September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, October, November and December (UV index 6).

Average cloud cover in December
Dianópolis, Brazil

Average cloud cover in December: 44

The month with the most cloud cover is March (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 11).

Average visibility in December
Dianópolis, Brazil

Average visibility in December: 9km

The months with the highest visibility are June, July, August, September and October (10km).
The months with the lowest visibility are January, March and April (8km).