Climate - Boa Vista (Brazil)

Boa Vista's climate is tropical, hot all year round, with a rainy season from May to August and a dry season from October to March.
The city is the capital of the state of Roraima and is located in the extreme north of Brazil, at 2 degrees north latitude, on the banks of the Branco River. We are in an area, on the border with Venezuela and Guyana, covered by the savannah and not by the forest, because the dry season is long. Furthermore, we are in the small area of Brazil north of the equator, where the dry season corresponds to the winter of the northern hemisphere.

The average temperature of the coldest month (July) is of 27.5 °C (81.5 °F), that of the warmest month (October) is of 29.7 °C (85.4 °F). Here are the average temperatures.
Precipitation amounts to 1650 millimeters (65 inches) per year: it is therefore abundant. It ranges from 20 mm (0.8 in) in the driest months (January, February) to 360 mm (14.2 in) in the wettest one (June). Here is the average precipitation.
On average, there are around 1895 sunshine hours per year. Here are the average sunshine hours per day.

Boa Vista - Weather by month

Based on the period 1991-2020
(January - February - March - April - May - June - July - August - September - October - November - December)

In January, the average temperature is of 28.9 °C (84 °F), with a minimum of 24.3 °C (75.8 °F) and a maximum of 33.4 °C (92.2 °F).
On the coldest nights of the month, the temperature usually drops to around 22 °C (72 °F). However, in January 1995, it dropped to 20.6 °C (69.1 °F).
On the warmest days of the month, the temperature usually reaches around 35.5 °C (95.5 °F). However, in January 2006, it reached 38 °C (100.4 °F).
Precipitation amounts to 20 mm (0.8 in), distributed over 5 days.
On average, there are 180 hours of sunshine per month, i.e. 5.5 hours per day.
The average humidity is 62%.
The average wind speed is 17 kph (11 kph).

In February, the average temperature is of 29.0 °C (84 °F), with a minimum of 24.4 °C (76 °F) and a maximum of 33.6 °C (92.5 °F).
On the coldest nights of the month, the temperature usually drops to around 22 °C (71.5 °F). However, in February 2005, it dropped to 21 °C (69.8 °F).
On the warmest days of the month, the temperature usually reaches around 35.5 °C (95.5 °F). However, in February 1998, it reached 39.4 °C (102.9 °F).
Precipitation amounts to 20 mm (0.8 in), distributed over 3 days.
On average, there are 150 hours of sunshine per month, i.e. 5.5 hours per day.
The average humidity is 61%.
The average wind speed is 18 kph (11 kph).

In March, the average temperature is of 29.5 °C (85 °F), with a minimum of 24.9 °C (76.8 °F) and a maximum of 34.1 °C (93.4 °F).
On the coldest nights of the month, the temperature usually drops to around 22 °C (72 °F). However, in March 2000, it dropped to 21.6 °C (70.9 °F).
On the warmest days of the month, the temperature usually reaches around 36 °C (97 °F). However, in March 1998, it reached 38.2 °C (100.8 °F).
Precipitation amounts to 50 mm (2 in), distributed over 4 days.
On average, there are 140 hours of sunshine per month, i.e. 4.5 hours per day.
The average humidity is 59%.
The average wind speed is 17 kph (11 kph).

In April, the average temperature is of 29.1 °C (84 °F), with a minimum of 24.7 °C (76.5 °F) and a maximum of 33.6 °C (92.4 °F).
On the coldest nights of the month, the temperature usually drops to around 22 °C (71.5 °F). However, in April 2004, it dropped to 20.9 °C (69.6 °F).
On the warmest days of the month, the temperature usually reaches around 36 °C (96.5 °F). However, in April 2001, it reached 37.2 °C (99 °F).
Precipitation amounts to 130 mm (5.1 in), distributed over 9 days.
On average, there are 130 hours of sunshine per month, i.e. 4.5 hours per day.
The average humidity is 67%.
The average wind speed is 14 kph (9 kph).

In May, the average temperature is of 28.1 °C (83 °F), with a minimum of 24.1 °C (75.4 °F) and a maximum of 32 °C (89.7 °F).
On the coldest nights of the month, the temperature usually drops to around 22 °C (72 °F). However, in May 2014, it dropped to 20 °C (68 °F).
On the warmest days of the month, the temperature usually reaches around 34.5 °C (94 °F). However, in May 1996, it reached 36.4 °C (97.5 °F).
Precipitation amounts to 270 mm (10.6 in), distributed over 19 days.
On average, there are 140 hours of sunshine per month, i.e. 4.5 hours per day.
The average humidity is 76%.
The average wind speed is 10 kph (6 kph).

In June, the average temperature is of 27.6 °C (82 °F), with a minimum of 23.8 °C (74.8 °F) and a maximum of 31.5 °C (88.7 °F).
On the coldest nights of the month, the temperature usually drops to around 22 °C (71.5 °F). However, in June 2001, it dropped to 20.5 °C (68.9 °F).
On the warmest days of the month, the temperature usually reaches around 33.5 °C (92.5 °F). However, in June 1992, it reached 36 °C (96.8 °F).
Precipitation amounts to 360 mm (14.2 in), distributed over 19 days.
On average, there are 95 hours of sunshine per month, i.e. 3 hours per day.
The average humidity is 79%.
The average wind speed is 8 kph (5 kph).

In July, the coldest month of the year, the average temperature is of 27.5 °C (81 °F), with a minimum of 23.6 °C (74.4 °F) and a maximum of 31.4 °C (88.6 °F).
On the coldest nights of the month, the temperature usually drops to around 21 °C (70 °F). However, in July 2000, it dropped to 19.9 °C (67.8 °F).
On the warmest days of the month, the temperature usually reaches around 34 °C (93 °F). However, in July 2008, it reached 36 °C (96.8 °F).
Precipitation amounts to 330 mm (13 in), distributed over 20 days.
On average, there are 135 hours of sunshine per month, i.e. 4.5 hours per day.
The average humidity is 79%.
The average wind speed is 7 kph (5 kph).

In August, the average temperature is of 28.3 °C (83 °F), with a minimum of 24 °C (75.1 °F) and a maximum of 32.6 °C (90.7 °F).
On the coldest nights of the month, the temperature usually drops to around 21.5 °C (71 °F). However, in August 1996, it dropped to 19.2 °C (66.6 °F).
On the warmest days of the month, the temperature usually reaches around 35.5 °C (95.5 °F). However, in August 1999, it reached 39.4 °C (102.9 °F).
Precipitation amounts to 220 mm (8.7 in), distributed over 14 days.
On average, there are 155 hours of sunshine per month, i.e. 5 hours per day.
The average humidity is 75%.
The average wind speed is 8 kph (5 kph).

In September, the average temperature is of 29.4 °C (85 °F), with a minimum of 24.6 °C (76.3 °F) and a maximum of 34.1 °C (93.4 °F).
On the coldest nights of the month, the temperature usually drops to around 22 °C (71.5 °F). However, in September 2000, it dropped to 20.9 °C (69.6 °F).
On the warmest days of the month, the temperature usually reaches around 36 °C (97 °F). However, in September 2012, it reached 39.5 °C (103.1 °F).
Precipitation amounts to 100 mm (3.9 in), distributed over 7 days.
On average, there are 200 hours of sunshine per month, i.e. 6.5 hours per day.
The average humidity is 68%.
The average wind speed is 9 kph (6 kph).

In October, the warmest month of the year, the average temperature is of 29.7 °C (85 °F), with a minimum of 24.8 °C (76.6 °F) and a maximum of 34.6 °C (94.2 °F).
On the coldest nights of the month, the temperature usually drops to around 22 °C (72 °F). However, in October 2018, it dropped to 20.5 °C (68.9 °F).
On the warmest days of the month, the temperature usually reaches around 36 °C (97 °F). However, in October 2000, it reached 39 °C (102.2 °F).
Precipitation amounts to 60 mm (2.4 in), distributed over 5 days.
On average, there are 205 hours of sunshine per month, i.e. 6.5 hours per day.
The average humidity is 65%.
The average wind speed is 10 kph (6 kph).

In November, the average temperature is of 29.5 °C (85 °F), with a minimum of 24.8 °C (76.6 °F) and a maximum of 34.3 °C (93.7 °F).
On the coldest nights of the month, the temperature usually drops to around 23 °C (73 °F). However, in November 2013, it dropped to 20 °C (68 °F).
On the warmest days of the month, the temperature usually reaches around 36 °C (97 °F). However, in November 2000, it reached 38 °C (100.4 °F).
Precipitation amounts to 60 mm (2.4 in), distributed over 5 days.
On average, there are 195 hours of sunshine per month, i.e. 6.5 hours per day.
The average humidity is 66%.
The average wind speed is 11 kph (7 kph).

In December, the average temperature is of 29.0 °C (84 °F), with a minimum of 24.5 °C (76.1 °F) and a maximum of 33.5 °C (92.3 °F).
On the coldest nights of the month, the temperature usually drops to around 22 °C (72 °F). However, in December 1997, it dropped to 20.2 °C (68.4 °F).
On the warmest days of the month, the temperature usually reaches around 35.5 °C (95.5 °F). However, in December 1998, it reached 39 °C (102.2 °F).
Precipitation amounts to 30 mm (1.2 in), distributed over 5 days.
On average, there are 175 hours of sunshine per month, i.e. 5.5 hours per day.
The average humidity is 65%.
The average wind speed is 14 kph (9 kph).