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Boa Vista Weather in December
Boa Vista in December averages 34°C (93°F) during the day and 24°C (75°F) at night. Keep in mind that quite a bit of rainfall is expected this month.
Rainfall in Boa Vista in December
Analyzing past climate data, one can expect approximately 12 days of rain, averaging 65 mm (2.6 in). Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.
Temperature in Boa Vista in December
If you're visiting Boa Vista in December, expect highs of 34°C (93°F) and overnight lows around 24°C (75°F). Sunshine and humidity can make it feel even warmer than the raw temperature suggests. With overnight lows of 24°C (75°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably.
Sunshine in Boa Vista in December
The area enjoys a balanced 173 hours of sunlight, ensuring it's neither too overcast nor too sunny.If you prefer dry days with pleasant temperatures, December may not be the ideal month to visit Boa Vista. Our weather planner can help you explore destinations with more pleasant weather conditions.
Boa Vista Temperature in December
Min Temperature
24°C (75°F)
Max Temperature
34°C (93°F)
Chance of Rain
38%
Precipitation
65 mm (2.6 in)
Rainy days
12 days
Humidity
73%
Sunshine
173 hours
Percentage Sunshine
Boa Vista Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Boa Vista - and find the best time to visit.
Daily Historical Temperatures
48-year average (1976-2025)
Based on our historical records, temperatures in Boa Vista typically stay consistent throughout December, with daily highs averaging around 34°C (93°F). Nights are warm, with lows around 25°C (77°F).
Average temperatures in December
Daily Historical Precipitation
48-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather records for Boa Vista in December
Browse day-by-day weather records for Boa Vista spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Boa Vista historical weather extremes in December
The extremes listed below come from historical weather data collected in Boa Vista from 1998 through 2025.
- The warmest day in December was on December 5, 1998, with a maximum of 38°C (100°F).
- The lowest daytime temperature in December was 24°C (75°F), recorded on December 4, 2022.
- Nighttime temperatures dropped to 20°C (68°F) on December 13, 2014, marking the coldest December night on record.
Best Places in Brazil in December
Find out more about the weather in Brazil and which places have the best travel conditions in this month. See all of Brazil in December →
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).
What to Wear in Boa Vista in December
Hot weather in December means keeping cool is the priority. Loose-fitting clothes in natural fabrics work best. Pack plenty of shorts, tank tops, and breathable shirts. Don't forget a hat, swimwear, and comfortable sandals. Rain gear is recommended, you can expect wet weather on multiple days. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.
What To Do in Boa Vista in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming7/10 -
Cycling8/10 -
Walking8/10 -
Camping8/10 -
Outdoor sports8/10
Boa Vista 3-Day Forecast
More climate data for Boa Vista
Temperature Rainfall Sunshine Humidity
See the full Boa Vista climate overview or explore weather in Brazil.
Popular in December
Where to go in December - average daytime high across popular destinations.
Fortaleza
31°C (88°F) Rio de Janeiro
30°C (86°F) Salvador
29°C (84°F) Búzios
27°C (81°F) Gramado28°C (82°F) Florianópolis28°C (82°F) Sao Paulo28°C (82°F) Paraty27°C (81°F) Bucket list
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