Rondônia Weather in December

Average temperatures, rainfall, sunshine and the best places to visit in Rondônia, Brazil in December.

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Porto Velho Ariquemes Ji-Paraná Vilhena

Considering a trip to Rondônia, Brazil this December and wondering about the expected weather conditions? Find all the crucial information you need right here, addressing your question:

What to Expect in Rondônia in December

Rondônia, Brazil is a region in Brazil. December in Rondônia generally has temperatures that range from warm to very warm, with heavy precipitation.

Temperatures

The average highest temperatures fluctuate between warm in Vilhena at 30°C (86°F) to very warm in Ariquemes at 32°C (90°F). Nighttime temperatures generally drop to 23°C (73°F) in Ariquemes and 21°C (70°F) in Vilhena. The temperatures mentioned for both day and night are typical averages. However some days might get even hotter. It's best to stay prepared by wearing cloths suitable for the warmth.

To learn more about the conditions in specific areas of Rondônia, Brazil, check out the map below.

Precipitation

In December, precipitation varies across different areas. From heavy rainfall in Ji-Paraná with an average of 258 mm (10 in) to heavy rainfall in Porto Velho with 300 mm (12 in).

Explore Rondônia by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Best Places to Visit in Rondônia in December

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Rondônia.

Conditions Temperatures Precipitation
perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Rondônia

What is the weather like in December for some of the most popular destinations in Rondônia, Brazil?

Temperature range in Rondônia (December)

Precipitation variation in Rondônia (December)

Porto Velho

In December Porto Velho generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 24°C (75°F) and heavy monthly rainfall. So on average the conditions are poor that month.

« November
December
January »
November
December
January
Max temperature
32°C (90°F)
31°C (88°F)
31°C (88°F)
Min temperature
24°C (75°F)
24°C (75°F)
24°C (75°F)
Monthly rainfall
241 mm (9.5 in)
300 mm (12 in)
311 mm (12 in)
Monthly rainy days
17 days
22 days
24 days
Weather conditions
poor
poor
poor
Climate in Porto Velho →

Ariquemes

In December Ariquemes generally has very high temperatures with maximum daytime temperatures around 32°C (90°F), minimum nighttime temperatures around 23°C (73°F) and heavy monthly rainfall. So on average the conditions are poor that month.

« November
December
January »
November
December
January
Max temperature
32°C (90°F)
32°C (90°F)
31°C (88°F)
Min temperature
23°C (73°F)
23°C (73°F)
23°C (73°F)
Monthly rainfall
219 mm (8.6 in)
261 mm (10 in)
297 mm (12 in)
Monthly rainy days
15 days
20 days
22 days
Weather conditions
poor
poor
poor
Climate in Ariquemes →

Ji-Paraná

In December Ji-Paraná generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 23°C (73°F) and heavy monthly rainfall. So on average the conditions are poor that month.

« November
December
January »
November
December
January
Max temperature
32°C (90°F)
31°C (88°F)
31°C (88°F)
Min temperature
23°C (73°F)
23°C (73°F)
23°C (73°F)
Monthly rainfall
218 mm (8.6 in)
258 mm (10 in)
277 mm (11 in)
Monthly rainy days
14 days
18 days
21 days
Weather conditions
poor
poor
poor
Climate in Ji-Paraná →

Vilhena

In December Vilhena generally has high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 21°C (70°F) and heavy monthly rainfall. So on average the conditions are poor that month.

« November
December
January »
November
December
January
Max temperature
30°C (86°F)
30°C (86°F)
29°C (84°F)
Min temperature
21°C (70°F)
21°C (70°F)
21°C (70°F)
Monthly rainfall
225 mm (8.9 in)
276 mm (11 in)
283 mm (11 in)
Monthly rainy days
13 days
17 days
19 days
Weather conditions
poor
poor
poor
Climate in Vilhena →

Cacoal

In December Cacoal generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 23°C (73°F) and heavy monthly rainfall. So on average the conditions are poor that month.

« November
December
January »
November
December
January
Max temperature
32°C (90°F)
31°C (88°F)
31°C (88°F)
Min temperature
23°C (73°F)
23°C (73°F)
23°C (73°F)
Monthly rainfall
237 mm (9.3 in)
285 mm (11 in)
314 mm (12 in)
Monthly rainy days
13 days
17 days
20 days
Weather conditions
poor
poor
poor
Climate in Cacoal →

Is your destination not in the list? Have a look at all destinations in Rondônia, in Brazil.

Popular cities in December

Day & night temperatures, rainfall and average weather in Rondônia in December.

City Weather Day temp Night temp Rainfall
Porto Velho 31°C (88°F) 24°C (75°F) 300 mm (12 in)
Ariquemes 32°C (90°F) 23°C (73°F) 261 mm (10 in)
Ji-Paraná 31°C (88°F) 23°C (73°F) 258 mm (10 in)
Vilhena 30°C (86°F) 21°C (70°F) 276 mm (11 in)
Cacoal 31°C (88°F) 23°C (73°F) 285 mm (11 in)
Rondônia 31°C (88°F) 23°C (73°F) 259 mm (10 in)

Rondônia weather in December: frequently asked questions

What is the weather like in Rondônia, Brazil in December?

December in Rondônia, Brazil brings poor weather. In Porto Velho, daytime temperatures are typically around 31°C (88°F) and nighttime lows hover near 24°C (75°F).

What is the average temperature in Rondônia, Brazil in December?

Average temperatures in Rondônia, Brazil during December range from a nighttime low near 24°C (75°F) to a daytime high around 31°C (88°F) in Porto Velho.

Does Rondônia, Brazil get a lot of rain in December?

Rainfall in Rondônia, Brazil peaks during December. Porto Velho averages roughly 300 mm (12 in), so frequent and sometimes heavy showers are the norm.

Is December a Good Time to Visit Rondônia, Brazil?

In our view, December might not be the best time to travel to Rondônia, Brazil with often poor weather in Porto Velho.

Generally speaking, the best visiting conditions can be found in June and July offering mostly tolerable weather in Porto Velho. The weather in January, February, March, April, August, September, October, November and December, on the other hand, tends to be poor.

Interested in more climate information?

We have much more information about the climate in Rondônia.

Weather and climate has detailed information for every country in the world. Are you going to Brazil? Get detailed historical weather averages for many cities in Brazil.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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