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Climate - Porto Nacional (Tocantins)


Average weather, temperature, rainfall, sunshine hours

Flag - Brazil

Porto Nacional, where it is located


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Climate chart - Porto Nacional
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).

Porto Nacional

Best Time



The best time to visit Porto Nacional is from May to September, being the dry season. It must be said that this is a very hot period, especially in August and September, so you can choose the period from May to July.

Porto Nacional - Climate data


In Porto Nacional, 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.
Porto Nacional - Average temperatures (1991-2015)
MonthMin (°C)Max (°C)Mean (°C)Min (°F)Max (°F)Mean (°F)
January233227.2738981
February223227.3729081.1
March223227.1728980.8
April223327.7729281.9
May223427.6719381.7
June193426.6679379.8
July183426.4659479.5
August203627.9679782.1
September223629.4729785
October233528.8739483.8
November233227.8749082
December233227.3739081.2
Year21.633.527.557192.481.5

In Porto Nacional, 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.
Porto Nacional - Average precipitation
MonthMillimetersInchesDays
January2551018
February2409.416
March27010.618
April1656.511
May5024
June30.10
July100
August50.20
September5024
October1405.59
November1857.314
December26010.215
Year162564109

In Porto Nacional, there are on average around 2380 sunshine hours per year. Here are the average hours of sunshine per day.
Porto Nacional - Sunshine hours
MonthAverageTotal
January4.5140
February5135
March4.5140
April6.5190
May8.5255
June9270
July9.5290
August9280
September6.5190
October5.5175
November5.5165
December4.5145
Year6.52380

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 weather in Porto Nacional is usually warm to hot and muggy. 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.
The day lasts on average 12 hours and 35 minutes.
There are on average 4.5 hours of sunshine per day. So, the sun shines 36% of the time.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is 5 kph (3 mph).



In February, the weather in Porto Nacional is usually warm to hot and muggy. 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.
The day lasts on average 12 hours and 25 minutes.
There are on average 5 hours of sunshine per day. So, the sun shines 39% of the time.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is 5 kph (3 mph).



In March, the weather in Porto Nacional is usually warm to hot and muggy. 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, the temperature usually drops to around 20.5 °C (69.5 °F).
On the warmest days, the temperature usually reaches around 35.5 °C (96 °F).
Precipitation amounts to 270 mm (10.6 in), distributed over 18 days.
The day lasts on average 12 hours and 5 minutes.
There are on average 4.5 hours of sunshine per day. So, the sun shines 38% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is 5 kph (3 mph).



In April, the weather in Porto Nacional is usually very hot. 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, the temperature usually drops to around 21 °C (69.5 °F).
On the warmest days, the temperature usually reaches around 36 °C (97 °F).
Precipitation amounts to 165 mm (6.5 in), distributed over 11 days.
The day lasts on average 11 hours and 55 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 53% of the time.
The average humidity is 68%.
The average wind speed is 5 kph (3 mph).



In May, the weather in Porto Nacional is usually very hot. 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, the temperature usually drops to around 20 °C (67.5 °F).
On the warmest days, the temperature usually reaches around 36 °C (97 °F).
Precipitation amounts to 50 mm (2 in), distributed over 4 days.
The day lasts on average 11 hours and 35 minutes.
There are on average 8.5 hours of sunshine per day. So, the sun shines 71% of the time.
The average humidity is 59%.
The average wind speed is 6 kph (4 mph).



In June, the weather in Porto Nacional is usually warm to hot. However, there are remarkable differences between night and day. 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, the temperature usually drops to around 17.5 °C (63.5 °F).
On the warmest days, the temperature usually reaches around 36 °C (96.5 °F).
Precipitation amounts to only 3 mm (0.1 in), distributed over 0 days.
The day lasts on average 11 hours and 30 minutes.
There are on average 9 hours of sunshine per day. So, the sun shines 79% of the time.
The average humidity is 48%.
The average wind speed is 7 kph (5 mph).



In July, the least warm month of the year, the weather in Porto Nacional is usually warm to hot. However, there are remarkable differences between night and day. 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.
The day lasts on average 11 hours and 35 minutes.
There are on average 9.5 hours of sunshine per day. So, the sun shines 81% of the time.
The average humidity is 42%.
The average wind speed is 8 kph (5 mph).



In August, the weather in Porto Nacional is usually very hot. However, there are remarkable differences between night and day. 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.
The day lasts on average 11 hours and 50 minutes.
There are on average 9 hours of sunshine per day. So, the sun shines 76% of the time.
The average humidity is 36%.
The average wind speed is 8 kph (5 mph).



In September, the hottest month of the year, the weather in Porto Nacional is usually very hot. However, there are remarkable differences between night and day. 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, the temperature usually drops to around 20 °C (68 °F).
On the warmest days, the temperature usually reaches around 39.5 °C (103 °F).
Precipitation amounts to 50 mm (2 in), distributed over 4 days.
The day lasts on average 12 hours and 5 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 53% of the time.
The average humidity is 43%.
The average wind speed is 7 kph (4 mph).



In October, the weather in Porto Nacional is usually very hot. 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, the temperature usually drops to around 20.5 °C (69.5 °F).
On the warmest days, the temperature usually reaches around 38.5 °C (101.5 °F).
Precipitation amounts to 140 mm (5.5 in), distributed over 9 days.
The day lasts on average 12 hours and 20 minutes.
There are on average 5.5 hours of sunshine per day. So, the sun shines 46% of the time.
The average humidity is 59%.
The average wind speed is 6 kph (4 mph).



In November, the weather in Porto Nacional is usually very hot. 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, the temperature usually drops to around 20.5 °C (68.5 °F).
On the warmest days, the temperature usually reaches around 37 °C (98.5 °F).
Precipitation amounts to 185 mm (7.3 in), distributed over 14 days.
The day lasts on average 12 hours and 35 minutes.
There are on average 5.5 hours of sunshine per day. So, the sun shines 43% of the time.
The average humidity is 70%.
The average wind speed is 5 kph (3 mph).



In December, the weather in Porto Nacional is usually warm to hot and muggy. 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.
The day lasts on average 12 hours and 40 minutes.
There are on average 4.5 hours of sunshine per day. So, the sun shines 37% of the time.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is 5 kph (3 mph).

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