Climate - Porto Nacional (Brazil)

The climate of Porto Nacional is tropical, with a rainy season from October to April and a dry season from May to September.
The city is located in Brazil, in the state of Tocantins and along the river of the same name, at 10 degrees south latitude and 240 meters (785 feet) above sea level. The river is very wide because a hydroelectric power plant was built further north, near the city of Lajeado.
About 60 km (37 miles) further north is the state capital, Palmas, which has a similar climate. We are in a transition zone between the north-west of Brazil, where the Amazon rainforest is located, and the north-east, which is more arid.
From June to August, the dry period, would be the austral winter, and in fact the night temperatures decrease a bit, but during the day it is very hot. In addition, from mid-August to October, the temperature rises and the hottest days of the year are recorded, before the rains. In September 2010, the temperature reached 42 °C (107.5 °F), and the average high was 37.9 °C (100 °F).

The average temperature of the coldest month (July) is of 26.4 °C (79.5 °F), that of the warmest month (September) is of 29.4 °C (85.0 °F). Here are the average temperatures.
Precipitation amounts to 1625 millimeters (64 inches) per year: it is therefore abundant. It ranges from 1 mm (0 in) in the driest month (July) to 270 mm (10.6 in) in the wettest one (March). Here is the average precipitation.
The sea temperature ranges from 26 °C (26 °F) in August to 28.5 °C (28.5 °F) in March, April. Here are the average sea temperatures.
On average, there are around 2380 sunshine hours per year. Here are the average sunshine hours per day.

Porto Nacional - Weather by month

Based on the period 1991-2015
(January - February - March - April - May - June - July - August - September - October - November - December)

In January, the average temperature is of 27.2 °C (81 °F), with a minimum of 22.6 °C (72.6 °F) and a maximum of 31.9 °C (89.4 °F).
On the coldest nights of the month, the temperature usually drops to around 21 °C (70 °F).
On the warmest days of the month, the temperature usually reaches around 36 °C (96.5 °F).
Precipitation amounts to 255 mm (10 in), distributed over 18 days.
On average, there are 140 hours of sunshine per month, i.e. 4.5 hours per day.
The average humidity is 73%.
The average wind speed is 5 kph (3 kph).

In February, the average temperature is of 27.3 °C (81 °F), with a minimum of 22.4 °C (72.3 °F) and a maximum of 32.2 °C (90 °F).
On the coldest nights of the month, the temperature usually drops to around 21 °C (70 °F).
On the warmest days of the month, the temperature usually reaches around 36 °C (97 °F).
Precipitation amounts to 240 mm (9.4 in), distributed over 16 days.
On average, there are 135 hours of sunshine per month, i.e. 5 hours per day.
The average humidity is 74%.
The average wind speed is 5 kph (3 kph).

In March, the average temperature is of 27.1 °C (81 °F), with a minimum of 22.4 °C (72.4 °F) and a maximum of 31.8 °C (89.3 °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 270 mm (10.6 in), distributed over 18 days.
On average, there are 140 hours of sunshine per month, i.e. 4.5 hours per day.
The average humidity is 75%.
The average wind speed is 5 kph (3 kph).

In April, the average temperature is of 27.7 °C (82 °F), with a minimum of 22.4 °C (72.3 °F) and a maximum of 33.1 °C (91.5 °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 36 °C (97 °F).
Precipitation amounts to 165 mm (6.5 in), distributed over 11 days.
On average, there are 190 hours of sunshine per month, i.e. 6.5 hours per day.
The average humidity is 68%.
The average wind speed is 5 kph (3 kph).

In May, the average temperature is of 27.6 °C (82 °F), with a minimum of 21.5 °C (70.7 °F) and a maximum of 33.7 °C (92.7 °F).
On the coldest nights of the month, the temperature usually drops to around 20 °C (67.5 °F).
On the warmest days of the month, the temperature usually reaches around 36 °C (97 °F).
Precipitation amounts to 50 mm (2 in), distributed over 4 days.
On average, there are 255 hours of sunshine per month, i.e. 8.5 hours per day.
The average humidity is 59%.
The average wind speed is 6 kph (4 kph).

In June, the average temperature is of 26.6 °C (80 °F), with a minimum of 19.2 °C (66.5 °F) and a maximum of 34 °C (93.1 °F).
On the coldest nights of the month, the temperature usually drops to around 17.5 °C (63.5 °F).
On the warmest days of the month, the temperature usually reaches around 36 °C (96.5 °F).
Precipitation amounts to only 3 mm (0.1 in), distributed over 0 days.
On average, there are 270 hours of sunshine per month, i.e. 9 hours per day.
The average humidity is 48%.
The average wind speed is 7 kph (5 kph).

In July, the coldest month of the year, the average temperature is of 26.4 °C (80 °F), with a minimum of 18.3 °C (65 °F) and a maximum of 34.5 °C (94 °F).
On the coldest nights of the month, the temperature usually drops to around 17 °C (62.5 °F).
On the warmest days of the month, the temperature usually reaches around 36.5 °C (97.5 °F).
Precipitation amounts to only 1 mm (0 in), distributed over 0 days.
On average, there are 290 hours of sunshine per month, i.e. 9.5 hours per day.
The average humidity is 42%.
The average wind speed is 8 kph (5 kph).

In August, the average temperature is of 27.9 °C (82 °F), with a minimum of 19.7 °C (67.4 °F) and a maximum of 36 °C (96.9 °F).
On the coldest nights of the month, the temperature usually drops to around 17.5 °C (63 °F).
On the warmest days of the month, the temperature usually reaches around 38.5 °C (101.5 °F).
Precipitation amounts to only 5 mm (0.2 in), distributed over 0 days.
On average, there are 280 hours of sunshine per month, i.e. 9 hours per day.
The average humidity is 36%.
The average wind speed is 8 kph (5 kph).

In September, the warmest month of the year, the average temperature is of 29.4 °C (85 °F), with a minimum of 22.5 °C (72.5 °F) and a maximum of 36.4 °C (97.5 °F).
On the coldest nights of the month, the temperature usually drops to around 20 °C (68 °F).
On the warmest days of the month, the temperature usually reaches around 39.5 °C (103 °F).
Precipitation amounts to 50 mm (2 in), distributed over 4 days.
On average, there are 190 hours of sunshine per month, i.e. 6.5 hours per day.
The average humidity is 43%.
The average wind speed is 7 kph (4 kph).

In October, the average temperature is of 28.8 °C (84 °F), with a minimum of 23 °C (73.5 °F) and a maximum of 34.5 °C (94.1 °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 38.5 °C (101.5 °F).
Precipitation amounts to 140 mm (5.5 in), distributed over 9 days.
On average, there are 175 hours of sunshine per month, i.e. 5.5 hours per day.
The average humidity is 59%.
The average wind speed is 6 kph (4 kph).

In November, the average temperature is of 27.8 °C (82 °F), with a minimum of 23.2 °C (73.7 °F) and a maximum of 32.4 °C (90.3 °F).
On the coldest nights of the month, the temperature usually drops to around 20.5 °C (68.5 °F).
On the warmest days of the month, the temperature usually reaches around 37 °C (98.5 °F).
Precipitation amounts to 185 mm (7.3 in), distributed over 14 days.
On average, there are 165 hours of sunshine per month, i.e. 5.5 hours per day.
The average humidity is 70%.
The average wind speed is 5 kph (3 kph).

In December, the average temperature is of 27.3 °C (81 °F), with a minimum of 22.6 °C (72.8 °F) and a maximum of 32 °C (89.6 °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 36 °C (97 °F).
Precipitation amounts to 260 mm (10.2 in), distributed over 15 days.
On average, there are 145 hours of sunshine per month, i.e. 4.5 hours per day.
The average humidity is 73%.
The average wind speed is 5 kph (3 kph).