Climate - Petrolina (Brazil)

Petrolina's climate is tropical semi-arid, with a relatively rainy season from January to March and a dry season from May to October.
The city is located in the state of Pernambuco, 380 meters (1,245 feet) above sea level, on the banks of the São Francisco River. Across the river lies the city of Juazeiro. To the west of the city the river widens into the Lago de Sobradinho, a lake created by a dam built in the 1970s.
We are in the north-east of Brazil, the driest area of the country. The sun shines very often, even almost 3,000 hours a year.
Temperatures drop a bit in the austral winter, from June to August.

The average temperature of the coldest month (July) is of 25.2 °C (77.4 °F), that of the warmest month (November) is of 29.1 °C (84.4 °F). Here are the average temperatures.
Precipitation amounts to 485 millimeters (19.1 inches) per year: it is therefore quite scarce. It ranges from 1 mm (0 in) in the driest month (August) to 115 mm (4.5 in) in the wettest one (March). Here is the average precipitation.
The sea temperature ranges from 26.5 °C (26.5 °F) in August, September to 28.5 °C (28.5 °F) in March, April, May. Here are the average sea temperatures.
On average, there are around 2995 sunshine hours per year. Here are the average sunshine hours per day.

Petrolina - 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 28.6 °C (83 °F), with a minimum of 23.6 °C (74.4 °F) and a maximum of 33.7 °C (92.6 °F).
On the coldest nights of the month, the temperature usually drops to around 21 °C (70.5 °F).
On the warmest days of the month, the temperature usually reaches around 36.5 °C (97.5 °F).
Precipitation amounts to 90 mm (3.5 in), distributed over 6 days.
On average, there are 250 hours of sunshine per month, i.e. 8 hours per day.
The average humidity is 54%.
The average wind speed is 13 kph (8 kph).

In February, the average temperature is of 28.7 °C (84 °F), with a minimum of 23.7 °C (74.6 °F) and a maximum of 33.7 °C (92.7 °F).
On the coldest nights of the month, the temperature usually drops to around 21.5 °C (70.5 °F).
On the warmest days of the month, the temperature usually reaches around 36.5 °C (97.5 °F).
Precipitation amounts to 90 mm (3.5 in), distributed over 6 days.
On average, there are 225 hours of sunshine per month, i.e. 8 hours per day.
The average humidity is 56%.
The average wind speed is 13 kph (8 kph).

In March, the average temperature is of 28.7 °C (84 °F), with a minimum of 23.7 °C (74.7 °F) and a maximum of 33.7 °C (92.6 °F).
On the coldest nights of the month, the temperature usually drops to around 21.5 °C (71 °F).
On the warmest days of the month, the temperature usually reaches around 36.5 °C (97.5 °F).
Precipitation amounts to 115 mm (4.5 in), distributed over 7 days.
On average, there are 235 hours of sunshine per month, i.e. 7.5 hours per day.
The average humidity is 58%.
The average wind speed is 12 kph (7 kph).

In April, the average temperature is of 28.1 °C (83 °F), with a minimum of 23.4 °C (74.1 °F) and a maximum of 32.9 °C (91.2 °F).
On the coldest nights of the month, the temperature usually drops to around 20.5 °C (69.5 °F).
On the warmest days of the month, the temperature usually reaches around 35.5 °C (96 °F).
Precipitation amounts to 45 mm (1.8 in), distributed over 3 days.
On average, there are 235 hours of sunshine per month, i.e. 8 hours per day.
The average humidity is 59%.
The average wind speed is 13 kph (8 kph).

In May, the average temperature is of 27.2 °C (81 °F), with a minimum of 22.5 °C (72.4 °F) and a maximum of 31.9 °C (89.4 °F).
On the coldest nights of the month, the temperature usually drops to around 19 °C (66.5 °F).
On the warmest days of the month, the temperature usually reaches around 34.5 °C (94.5 °F).
Precipitation amounts to 13 mm (0.5 in), distributed over 2 days.
On average, there are 230 hours of sunshine per month, i.e. 7.5 hours per day.
The average humidity is 59%.
The average wind speed is 15 kph (9 kph).

In June, the average temperature is of 26.0 °C (79 °F), with a minimum of 21.3 °C (70.3 °F) and a maximum of 30.8 °C (87.5 °F).
On the coldest nights of the month, the temperature usually drops to around 18.5 °C (65 °F).
On the warmest days of the month, the temperature usually reaches around 34 °C (93 °F).
Precipitation amounts to only 6 mm (0.2 in), distributed over 2 days.
On average, there are 220 hours of sunshine per month, i.e. 7.5 hours per day.
The average humidity is 59%.
The average wind speed is 16 kph (10 kph).

In July, the coldest month of the year, the average temperature is of 25.2 °C (77 °F), with a minimum of 20.3 °C (68.5 °F) and a maximum of 30.2 °C (86.4 °F).
On the coldest nights of the month, the temperature usually drops to around 16.5 °C (62 °F).
On the warmest days of the month, the temperature usually reaches around 33 °C (91.5 °F).
Precipitation amounts to only 4 mm (0.2 in), and all occurs in one day.
On average, there are 240 hours of sunshine per month, i.e. 8 hours per day.
The average humidity is 56%.
The average wind speed is 17 kph (11 kph).

In August, the average temperature is of 25.8 °C (78 °F), with a minimum of 20.5 °C (68.9 °F) and a maximum of 31.2 °C (88.1 °F).
On the coldest nights of the month, the temperature usually drops to around 18 °C (64 °F).
On the warmest days of the month, the temperature usually reaches around 34 °C (93.5 °F).
Precipitation amounts to only 1 mm (0 in), distributed over 0 days.
On average, there are 270 hours of sunshine per month, i.e. 8.5 hours per day.
The average humidity is 52%.
The average wind speed is 18 kph (11 kph).

In September, the average temperature is of 27.4 °C (81 °F), with a minimum of 21.7 °C (71.1 °F) and a maximum of 33 °C (91.5 °F).
On the coldest nights of the month, the temperature usually drops to around 19 °C (66 °F).
On the warmest days of the month, the temperature usually reaches around 36 °C (97 °F).
Precipitation amounts to only 3 mm (0.1 in), distributed over 0 days.
On average, there are 275 hours of sunshine per month, i.e. 9 hours per day.
The average humidity is 47%.
The average wind speed is 18 kph (11 kph).

In October, the average temperature is of 28.7 °C (84 °F), with a minimum of 23 °C (73.5 °F) and a maximum of 34.4 °C (93.9 °F).
On the coldest nights of the month, the temperature usually drops to around 21 °C (69.5 °F).
On the warmest days of the month, the temperature usually reaches around 37 °C (99 °F).
Precipitation amounts to 11 mm (0.4 in), and all occurs in one day.
On average, there are 285 hours of sunshine per month, i.e. 9 hours per day.
The average humidity is 45%.
The average wind speed is 17 kph (10 kph).

In November, the warmest month of the year, the average temperature is of 29.1 °C (84 °F), with a minimum of 23.7 °C (74.7 °F) and a maximum of 34.5 °C (94.2 °F).
On the coldest nights of the month, the temperature usually drops to around 21.5 °C (70.5 °F).
On the warmest days of the month, the temperature usually reaches around 38 °C (100 °F).
Precipitation amounts to 50 mm (2 in), distributed over 4 days.
On average, there are 265 hours of sunshine per month, i.e. 9 hours per day.
The average humidity is 49%.
The average wind speed is 15 kph (9 kph).

In December, the warmest month of the year, the average temperature is of 28.9 °C (84 °F), with a minimum of 23.7 °C (74.7 °F) and a maximum of 34.1 °C (93.4 °F).
On the coldest nights of the month, the temperature usually drops to around 21 °C (70.5 °F).
On the warmest days of the month, the temperature usually reaches around 37.5 °C (100 °F).
Precipitation amounts to 55 mm (2.2 in), distributed over 4 days.
On average, there are 265 hours of sunshine per month, i.e. 8.5 hours per day.
The average humidity is 52%.
The average wind speed is 14 kph (9 kph).