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Climate - Imperatriz (Maranhão)


Average weather, temperature, rainfall, sunshine hours

Flag - Brazil

Imperatriz, where it is located


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Climate chart - Imperatriz
The climate of Imperatriz is tropical, with a rainy season from December to April and a dry season from June to October, with May and November as transitional months.
During the day it can get very hot all year round, but especially from July to October. In September 2017, the temperature reached 40 °C (104 °F), and the average high was 38.1 °C (100.6 °F).
The city is located in northeastern Brazil, at 5 degrees south latitude, in the state of Maranhão, on the banks of the Tocantins River.

Imperatriz

Best Time



It is difficult to find the best time in Imperatriz, since the dry season, from June to October, which in any case will be preferred, is also very hot. In June and July the temperature is a bit lower, but the humidity is a bit higher.

Imperatriz - Climate data


In Imperatriz, the average temperature of the coldest month (January) is of 27.7 °C (81.9 °F), that of the warmest month (October) is of 29.6 °C (85.2 °F). Here are the average temperatures.
Imperatriz - Average temperatures (1991-2020)
MonthMin (°C)Max (°C)Mean (°C)Min (°F)Max (°F)Mean (°F)
January233227.7749081.9
February233227.9749082.2
March243228759082.5
April243328.2759182.7
May233328.4749283.1
June223427.9729382.3
July213527.8709482
August213628.5709783.2
September233629.5739785.1
October243529.6759585.2
November243429.1769384.4
December243328.4759283.1
Year2333.828.3573.592.883

In Imperatriz, precipitation amounts to 1515 millimeters (59.6 inches) per year: it is therefore abundant. It ranges from 6 mm (0.2 in) in the driest month (July) to 295 mm (11.6 in) in the wettest one (March). Here is the average precipitation.
Imperatriz - Average precipitation
MonthMillimetersInchesDays
January2551015
February2208.715
March29511.617
April2058.114
May903.57
June150.62
July60.31
August90.41
September401.63
October702.86
November1204.79
December1907.513
Year151559.6103

In Imperatriz, there are on average around 2275 sunshine hours per year. Here are the average hours of sunshine per day.
Imperatriz - Sunshine hours
MonthAverageTotal
January5150
February4.5135
March4.5145
April5.5170
May7220
June8.5260
July9280
August8.5265
September6.5200
October5160
November5145
December4.5145
Year6.22275

Imperatriz - Weather by month

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


In January, the least warm month of the year, the weather in Imperatriz is usually very hot and muggy. The average temperature is of 27.7 °C (82 °F), with a minimum of 23.4 °C (74 °F) and a maximum of 32.1 °C (89.8 °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 35 °C (95 °F).
Precipitation amounts to 255 mm (10 in), distributed over 15 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 79%. Hence, the air is normally humid.
The average wind speed is 6 kph (4 mph).



In February, the weather in Imperatriz is usually very hot and muggy. The average temperature is of 27.9 °C (82 °F), with a minimum of 23.4 °C (74.2 °F) and a maximum of 32.4 °C (90.3 °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 35 °C (95 °F).
Precipitation amounts to 220 mm (8.7 in), distributed over 15 days.
The day lasts on average 12 hours and 20 minutes.
There are on average 4.5 hours of sunshine per day. So, the sun shines 38% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is 7 kph (4 mph).



In March, the weather in Imperatriz is usually very hot and muggy. The average temperature is of 28.0 °C (82 °F), with a minimum of 23.6 °C (74.5 °F) and a maximum of 32.4 °C (90.4 °F).
On the coldest nights, the temperature usually drops to around 22 °C (71.5 °F).
On the warmest days, the temperature usually reaches around 35 °C (94.5 °F).
Precipitation amounts to 295 mm (11.6 in), distributed over 17 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 39% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is 7 kph (4 mph).



In April, the weather in Imperatriz is usually very hot and muggy. The average temperature is of 28.2 °C (83 °F), with a minimum of 23.7 °C (74.7 °F) and a maximum of 32.6 °C (90.7 °F).
On the coldest nights, the temperature usually drops to around 22 °C (72 °F).
On the warmest days, the temperature usually reaches around 34.5 °C (94.5 °F).
Precipitation amounts to 205 mm (8.1 in), distributed over 14 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 5.5 hours of sunshine per day. So, the sun shines 48% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is 6 kph (4 mph).



In May, the weather in Imperatriz is usually very hot and muggy. The average temperature is of 28.4 °C (83 °F), with a minimum of 23.4 °C (74.2 °F) and a maximum of 33.3 °C (91.9 °F).
On the coldest nights, the temperature usually drops to around 21.5 °C (71 °F).
On the warmest days, the temperature usually reaches around 35.5 °C (95.5 °F).
Precipitation amounts to 90 mm (3.5 in), distributed over 7 days.
The day lasts on average 11 hours and 55 minutes.
There are on average 7 hours of sunshine per day. So, the sun shines 60% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is 6 kph (4 mph).



In June, the weather in Imperatriz is usually very hot. The average temperature is of 27.9 °C (82 °F), with a minimum of 22.1 °C (71.7 °F) and a maximum of 33.8 °C (92.8 °F).
On the coldest nights, the temperature usually drops to around 19.5 °C (67 °F).
On the warmest days, the temperature usually reaches around 35.5 °C (96 °F).
Precipitation amounts to 15 mm (0.6 in), distributed over 2 days.
The day lasts on average 11 hours and 50 minutes.
There are on average 8.5 hours of sunshine per day. So, the sun shines 74% of the time.
The average humidity is 67%.
The average wind speed is 7 kph (5 mph).



In July, the weather in Imperatriz is usually very hot. However, there are remarkable differences between night and day. The average temperature is of 27.8 °C (82 °F), with a minimum of 21 °C (69.7 °F) and a maximum of 34.6 °C (94.3 °F).
On the coldest nights of the month, the temperature usually drops to around 18 °C (65 °F).
On the warmest days of the month, the temperature usually reaches around 36.5 °C (97.5 °F).
Precipitation amounts to only 6 mm (0.2 in), and all occurs in one day.
The day lasts on average 11 hours and 50 minutes.
There are on average 9 hours of sunshine per day. So, the sun shines 77% of the time.
The average humidity is 60%.
The average wind speed is 8 kph (5 mph).



In August, the weather in Imperatriz is usually very hot. However, there are remarkable differences between night and day. The average temperature is of 28.5 °C (83 °F), with a minimum of 21 °C (69.8 °F) and a maximum of 35.9 °C (96.6 °F).
On the coldest nights of the month, the temperature usually drops to around 18 °C (64.5 °F).
On the warmest days of the month, the temperature usually reaches around 38 °C (100 °F).
Precipitation amounts to only 9 mm (0.4 in), and all occurs in one day.
The day lasts on average 11 hours and 55 minutes.
There are on average 8.5 hours of sunshine per day. So, the sun shines 72% of the time.
The average humidity is 56%.
The average wind speed is 9 kph (5 mph).



In September, the weather in Imperatriz is usually very hot. However, there are remarkable differences between night and day. The average temperature is of 29.5 °C (85 °F), with a minimum of 22.8 °C (73.1 °F) and a maximum of 36.2 °C (97.1 °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 38 °C (100.5 °F).
Precipitation amounts to 40 mm (1.6 in), distributed over 3 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 55% of the time.
The average humidity is 57%.
The average wind speed is 9 kph (6 mph).



In October, the hottest month of the year, the weather in Imperatriz is usually very hot. The average temperature is of 29.6 °C (85 °F), with a minimum of 23.9 °C (75.1 °F) and a maximum of 35.2 °C (95.4 °F).
On the coldest nights, the temperature usually drops to around 21.5 °C (70.5 °F).
On the warmest days, the temperature usually reaches around 38 °C (100.5 °F).
Precipitation amounts to 70 mm (2.8 in), distributed over 6 days.
The day lasts on average 12 hours and 10 minutes.
There are on average 5 hours of sunshine per day. So, the sun shines 42% of the time.
The average humidity is 63%.
The average wind speed is 9 kph (5 mph).



In November, the weather in Imperatriz is usually very hot. The average temperature is of 29.1 °C (84 °F), with a minimum of 24.2 °C (75.6 °F) and a maximum of 33.9 °C (93.1 °F).
On the coldest nights, the temperature usually drops to around 22 °C (71.5 °F).
On the warmest days, the temperature usually reaches around 36.5 °C (98 °F).
Precipitation amounts to 120 mm (4.7 in), distributed over 9 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 38% of the time.
The average humidity is 70%.
The average wind speed is 8 kph (5 mph).



In December, the weather in Imperatriz is usually very hot and muggy. The average temperature is of 28.4 °C (83 °F), with a minimum of 23.8 °C (74.8 °F) and a maximum of 33.1 °C (91.5 °F).
On the coldest nights of the month, the temperature usually drops to around 21.5 °C (71 °F).
On the warmest days of the month, the temperature usually reaches around 36 °C (97 °F).
Precipitation amounts to 190 mm (7.5 in), distributed over 13 days.
The day lasts on average 12 hours and 25 minutes.
There are on average 4.5 hours of sunshine per day. So, the sun shines 37% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is 7 kph (4 mph).

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