December weather forecast
Ribeirão Preto, Brazil

englishespañol中文
Share

Weather in December

Closing off the year in Ribeirão Preto, December advances the warming trend and blends it with heightened precipitation. The city caps off its annual rainfall with an impressive 189mm (7.44"), marking it as the second-wettest month of the year. Moreover, the number of daylight hours reaches its peak, increasing the heat effect during the daytime. As the temperature continues to climb, the humidity also hikes, creating a humid atmosphere. Thus, the city wraps up the year experiencing the epitome of its tropical monsoon climate.

Temperature

Ribeirão Preto's average high-temperature marks a still moderately hot 28.5°C (83.3°F) with the advent of December, closely mirroring that of the preceding month. Ribeirão Preto experiences an average nighttime temperature of 19.9°C (67.8°F) in the month of December.

Heat index

In December, the average heat index is evaluated at a hot 34°C (93.2°F). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
Research indicates the heat index considers values in shaded locales and with light winds. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.

Humidity

In December, the average relative humidity in Ribeirão Preto is 84%.

Rainfall

In Ribeirão Preto, in December, during 29.7 rainfall days, 189mm (7.44") of precipitation is typically accumulated. Throughout the year, there are 221 rainfall days, and 1294mm (50.94") of precipitation is accumulated.

Daylight

December has the longest days of the year in Ribeirão Preto, Brazil, with an average of 13h and 24min of daylight.
On the first day of the month, sunrise is at 05:20 and sunset at 18:40. On the last day of December, in Ribeirão Preto, sunrise is at 05:32 and sunset at 18:56 -03.

Sunshine

In December, the average sunshine in Ribeirão Preto is 7.7h.

UV index

February, April through June and December, with an average maximum UV index of 5, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.
Note: In December, the UV index of 5 transforms into the following advice:
Undertake precautions - It is suggested to shield oneself from sunburn. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.

Frequently asked questions

How hot does it get in Ribeirão Preto in December?

The average high-temperature and low-temperature in Ribeirão Preto, Brazil, during December are 28.5°C (83.3°F) and 19.9°C (67.8°F) respectively. In December, the average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, is evaluated at 34°C (93.2°F).

What is the average humidity in December in Ribeirão Preto?

In Ribeirão Preto, Brazil, the average relative humidity in December is 84%.

How much does it rain in Ribeirão Preto in December?

In Ribeirão Preto, Brazil, in December, during 29.7 rainfall days, 189mm (7.44") of precipitation is typically accumulated.

When are the longest days in Ribeirão Preto?

December has the longest days of the year in Ribeirão Preto, with an average of 13h and 24min of daylight.

How many hours of daylight does Ribeirão Preto have in December?

In December, the average day length is 13h and 24min.

When is the sunrise / sunset in December in Ribeirão Preto?

In December, on the first day of the month, sunrise is at 05:20 and sunset at 18:40. On the last day of the month, sunrise is at 05:32 and sunset at 18:56 -03.

How many hours of sunshine does Ribeirão Preto have in December?

In Ribeirão Preto, Brazil, the average sunshine duration in December is 7.7h.

What is the month with the lowest UV index in Ribeirão Preto?

The months with the lowest UV index in Ribeirão Preto, Brazil, are February, April through June and December, with an average maximum UV index of 5.

What is the UV index reading in December in Ribeirão Preto?

In December, the average daily maximum UV index in Ribeirão Preto is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from unsafe exposure to Sun's UV rays.

Average temperature in December
Ribeirão Preto, Brazil

Average temperature in December - Ribeirão Preto, Brazil
  • Average high temperature in December: 28.5°C

The warmest month (with the highest average high temperature) is September (31.1°C).
The month with the lowest average high temperature is June (24.2°C).

  • Average low temperature in December: 19.9°C

The month with the highest average low temperature is December (19.9°C).
The coldest month (with the lowest average low temperature) is June (14.3°C).

Average pressure in December
Ribeirão Preto, Brazil

Average pressure in December - Ribeirão Preto, Brazil
  • Average pressure in December: 1011.3mbar

The month with the highest atmospheric pressure is July (1019.3mbar).
The month with the lowest atmospheric pressure is December (1011.3mbar).

Average wind speed in December
Ribeirão Preto, Brazil

Average wind speed in December - Ribeirão Preto, Brazil
  • Average wind speed in December: 6.9km/h

The windiest month (with the highest average wind speed) is September (8.9km/h).
The calmest month (with the lowest average wind speed) is February (6.2km/h).

Average humidity in December
Ribeirão Preto, Brazil

Average humidity in December - Ribeirão Preto, Brazil
  • Average humidity in December: 84%

The month with the highest relative humidity is March (88%).
The month with the lowest relative humidity is September (54%).

Average rainfall in December
Ribeirão Preto, Brazil

Average rainfall in December - Ribeirão Preto, Brazil
  • Average rainfall in December: 189mm

The wettest month (with the highest rainfall) is January (238mm).
The driest month (with the least rainfall) is August (11mm).

Average rainfall days in December
Ribeirão Preto, Brazil

Average rainfall days in December - Ribeirão Preto, Brazil
  • Average rainfall days in December: 29.7 days

The month with the highest number of rainy days is December (29.7 days).
The month with the least rainy days is August (4.6 days).

Average daylight in December /
Average sunshine in December
Ribeirão Preto, Brazil

Average daylight in December / Average sunshine in December - Ribeirão Preto, Brazil
  • Average daylight in December: 13h and 2min

The month with the longest days is December (Average daylight: 13h and 24min).
The month with the shortest days is June (Average daylight: 10h and 54min).

  • Average sunshine in December: 7h and 4min

The month with the most sunshine is September (Average sunshine: 9h and 24min).
The month with the least sunshine is January (Average sunshine: 7h and 12min).

Average sunshine days in December
Ribeirão Preto, Brazil

Average sunshine days in December - Ribeirão Preto, Brazil
  • Average sunshine days in December: 0.5 days

The month with the most sunshine days is August (26 days).
The month with the least sunshine days is December (0.5 days).

Average UV index in December
Ribeirão Preto, Brazil

Average UV index in December - Ribeirão Preto, Brazil
  • Average UV index in December: 5

The months with the highest UV index are January, March, July, August, September, October and November (UV index 6).
The months with the lowest UV index are February, April, May, June and December (UV index 5).

Average cloud cover in December
Ribeirão Preto, Brazil

Average cloud cover in December - Ribeirão Preto, Brazil
  • Average cloud cover in December: 50

The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 15).

Average visibility in December
Ribeirão Preto, Brazil

Average visibility in December - Ribeirão Preto, Brazil
  • Average visibility in December: 8km

The months with the highest visibility are July, August and September (10km).
The months with the lowest visibility are January, February, March, April and May (7km).

Ribeirão Preto, Brazil

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location