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Climate chart - Parnaíba (Piauí)
Parnaíba's climate is
tropical, with a rainy season from January to May and a dry season from June to December.
The city is located in northeastern Brazil, in the state of Piauí, on the coast of the Atlantic Ocean, near the mouth of the Parnaíba River. Nearby are the towns of Ilha Grande, Luís Correia, and Cajueiro da Praia.
The delta of the Parnaíba River (or Delta das Americas), one of the largest in the world, is characterized by canals, lagoons and sand dunes.
Compared to cities further west, such as Belém and São Luis, the rains are less abundant and the dry season is longer.
Best Time
The best time to visit Parnaíba is from June to December, being the driest and sunniest of the year. The period from August to November is the driest, but the temperatures are slightly higher.
Parnaíba - Climate data
The
average temperature of the coldest month (June) is of 27.0 °C (80.5 °F), that of the warmest months (October, November) is of 29.0 °C (84.3 °F). Here are the average temperatures.
Parnaíba - Average temperatures (1991-2020) | Month | Min (°C) | Max (°C) | Mean (°C) | Min (°F) | Max (°F) | Mean (°F) |
|---|
| January | 23.6 | 32.4 | 28 | 74 | 90 | 82.4 |
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| February | 23.3 | 31.6 | 27.4 | 74 | 89 | 81.4 |
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| March | 23.3 | 31 | 27.2 | 74 | 88 | 80.9 |
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| April | 23.2 | 30.9 | 27 | 74 | 88 | 80.7 |
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| May | 23 | 31.3 | 27.2 | 73 | 88 | 80.9 |
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| June | 22.2 | 31.7 | 27 | 72 | 89 | 80.5 |
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| July | 21.8 | 32.4 | 27.1 | 71 | 90 | 80.8 |
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| August | 22.2 | 33.8 | 28 | 72 | 93 | 82.4 |
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| September | 23.2 | 34.5 | 28.8 | 74 | 94 | 83.9 |
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| October | 23.8 | 34.3 | 29 | 75 | 94 | 84.3 |
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| November | 24 | 34.1 | 29 | 75 | 93 | 84.3 |
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| December | 24.2 | 33.7 | 29 | 76 | 93 | 84.1 |
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| Year | 23.1 | 32.6 | 27.85 | 73.7 | 90.8 | 82 |
|---|
amounts to 1135 millimeters (44.7 inches) per year: it is therefore quite abundant. It ranges from 1 mm (0 in) in the driest months (September, October) to 270 mm (10.6 in) in the wettest one (April). Here is the average precipitation.
Parnaíba - Average precipitation| Month | Millimeters | Inches | Days |
|---|
| January | 120 | 4.7 | 9 |
|---|
| February | 180 | 7.1 | 13 |
|---|
| March | 260 | 10.2 | 17 |
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| April | 270 | 10.6 | 17 |
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| May | 175 | 6.9 | 12 |
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| June | 50 | 2 | 5 |
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| July | 40 | 1.6 | 4 |
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| August | 4 | 0.2 | 1 |
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| September | 1 | 0 | 0 |
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| October | 1 | 0 | 0 |
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| November | 4 | 0.1 | 0 |
|---|
| December | 30 | 1.2 | 3 |
|---|
| Year | 1135 | 44.7 | 81 |
|---|
The
sea temperature ranges from 27 °C (81 °F) in August, September, October, November to 28.5 °C (83 °F) in March, April, May. Here are the average sea temperatures.
Parnaíba - Sea temperature| Month | Celsius (°C) | Fahrenheit (°F) |
|---|
January | 28 | 82 | February | 28 | 83 | March | 28.5 | 83 | April | 28.5 | 84 | May | 28.5 | 83 | June | 28 | 83 | July | 27.5 | 81 | August | 27 | 80 | September | 27 | 80 | October | 27 | 80 | November | 27 | 81 | December | 27.5 | 82 | Year | 27.7 | 81.9 |
There are on average around 2820
sunshine hours per year. Here are the average hours of sunshine per day.
Parnaíba - Sunshine hours| Month | Average | Total |
|---|
January | 6.5 | 200 | February | 6 | 165 | March | 5 | 160 | April | 5.5 | 170 | May | 7 | 210 | June | 8 | 240 | July | 8.5 | 260 | August | 9.5 | 300 | September | 9.5 | 290 | October | 9.5 | 300 | November | 9 | 275 | December | 8 | 245 | Year | 7.7 | 2820 |
Parnaíba - Weather by month
Based on the period 1991-2020
January is generally a very hot, muggy month. The average temperature is of 28 °C (82 °F), with a minimum of 23.6 °C (74.5 °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 (71 °F). However, it dropped to 21 °C (69.8 °F) in January 1999.
On the warmest days of the month, the temperature usually reaches around 35.5 °C (95.5 °F). However, it reached 37.1 °C (98.8 °F) in January 2007.
Precipitation amounts to 120 mm (4.7 in), distributed over 9 days.
The day lasts on average 12 hours and 20 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 52% of the time.
The average humidity is 72%. Hence, the air is normally humid.
The average wind speed is 21 kph (13 mph).
The average sea temperature is of 28 °C (82 °F). Therefore, the sea is pleasantly warm and allows long swims.
February is generally a warm to hot, muggy month. The average temperature is of 27.4 °C (81 °F), with a minimum of 23.3 °C (73.9 °F) and a maximum of 31.6 °C (88.9 °F).
On the coldest nights of the month, the temperature usually drops to around 21.5 °C (70.5 °F). However, it dropped to 20.3 °C (68.5 °F) in February 1997.
On the warmest days of the month, the temperature usually reaches around 34 °C (93.5 °F). However, it reached 36.8 °C (98.2 °F) in February 2012.
Precipitation amounts to 180 mm (7.1 in), distributed over 13 days.
The day lasts on average 12 hours and 10 minutes.
There are on average 6 hours of sunshine per day. So, the sun shines 49% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is 17 kph (11 mph).
The average sea temperature is of 28 °C (83 °F). Therefore, the sea is pleasantly warm and allows long swims.
March is generally a warm to hot, muggy month. The average temperature is of 27.2 °C (81 °F), with a minimum of 23.3 °C (73.9 °F) and a maximum of 31 °C (87.8 °F).
On the coldest nights, the temperature usually drops to around 22 °C (71.5 °F). However, it dropped to 19.9 °C (67.8 °F) in March 2005.
On the warmest days, the temperature usually reaches around 33 °C (91.5 °F). However, it reached 36.3 °C (97.3 °F) in March 2010.
Precipitation amounts to 260 mm (10.2 in), distributed over 17 days.
The day lasts on average 12 hours and 5 minutes.
There are on average 5 hours of sunshine per day. So, the sun shines 43% of the time.
The average humidity is 77%. Hence, the air is normally humid.
The average wind speed is 15 kph (10 mph).
The average sea temperature is of 28.5 °C (83.5 °F). Therefore, the sea is pleasantly warm and allows long swims.
April is generally a warm to hot, muggy month. The average temperature is of 27.0 °C (81 °F), with a minimum of 23.2 °C (73.8 °F) and a maximum of 30.9 °C (87.6 °F).
On the coldest nights, the temperature usually drops to around 22 °C (71 °F). However, it dropped to 20.6 °C (69.1 °F) in April 2000.
On the warmest days, the temperature usually reaches around 33 °C (91 °F). However, it reached 34.9 °C (94.8 °F) in April 1998.
Precipitation amounts to 270 mm (10.6 in), distributed over 17 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 47% of the time.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is 14 kph (9 mph).
The average sea temperature is of 28.5 °C (83.5 °F). Therefore, the sea is pleasantly warm and allows long swims.
May is generally a warm to hot, muggy month. The average temperature is of 27.2 °C (81 °F), with a minimum of 23 °C (73.4 °F) and a maximum of 31.3 °C (88.3 °F).
On the coldest nights, the temperature usually drops to around 21.5 °C (70.5 °F). However, it dropped to 19.8 °C (67.6 °F) in May 1994.
On the warmest days, the temperature usually reaches around 32.5 °C (91 °F). However, it reached 34.8 °C (94.6 °F) in May 1998.
Precipitation amounts to 175 mm (6.9 in), distributed over 12 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 7 hours of sunshine per day. So, the sun shines 57% of the time.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is 16 kph (10 mph).
The average sea temperature is of 28.5 °C (83.5 °F). Therefore, the sea is pleasantly warm and allows long swims.
June, the least warm month of the year, is generally a warm to hot, muggy month. The average temperature is of 27.0 °C (81 °F), with a minimum of 22.2 °C (72 °F) and a maximum of 31.7 °C (89.1 °F).
On the coldest nights, the temperature usually drops to around 20 °C (68 °F). However, it dropped to 18 °C (64.4 °F) in June 2018.
On the warmest days, the temperature usually reaches around 33 °C (92 °F). However, it reached 35.3 °C (95.5 °F) in June 1998.
Precipitation amounts to 50 mm (2 in), distributed over 5 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 8 hours of sunshine per day. So, the sun shines 66% of the time.
The average humidity is 70%. Hence, the air is normally humid.
The average wind speed is 16 kph (10 mph).
The average sea temperature is of 28 °C (82.5 °F). Therefore, the sea is pleasantly warm and allows long swims.
July is generally a warm to hot month. The average temperature is of 27.1 °C (81 °F), with a minimum of 21.8 °C (71.2 °F) and a maximum of 32.4 °C (90.3 °F).
On the coldest nights of the month, the temperature usually drops to around 19.5 °C (67 °F). However, it dropped to 17.8 °C (64 °F) in July 1995.
On the warmest days of the month, the temperature usually reaches around 34 °C (93.5 °F). However, it reached 36.4 °C (97.5 °F) in July 1998.
Precipitation amounts to 40 mm (1.6 in), distributed over 4 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 8.5 hours of sunshine per day. So, the sun shines 70% of the time.
The average humidity is 68%.
The average wind speed is 17 kph (11 mph).
The average sea temperature is of 27.5 °C (81.5 °F). Therefore, the sea is pleasantly warm and allows long swims.
August is generally a very hot month. The average temperature is of 28 °C (82 °F), with a minimum of 22.2 °C (72 °F) and a maximum of 33.8 °C (92.8 °F).
On the coldest nights of the month, the temperature usually drops to around 20 °C (68 °F). However, it dropped to 18.6 °C (65.5 °F) in August 2017.
On the warmest days of the month, the temperature usually reaches around 35.5 °C (96.5 °F). However, it reached 37.2 °C (99 °F) in August 2005.
Precipitation amounts to only 4 mm (0.2 in), and all occurs in one day.
The day lasts on average 12 hours and 0 minutes.
There are on average 9.5 hours of sunshine per day. So, the sun shines 80% of the time.
The average humidity is 65%.
The average wind speed is 23 kph (14 mph).
The average sea temperature is of 27 °C (80.5 °F). Therefore, the sea is pleasantly warm and allows long swims.
September is generally a very hot month. The average temperature is of 28.8 °C (84 °F), with a minimum of 23.2 °C (73.8 °F) and a maximum of 34.5 °C (94.1 °F).
On the coldest nights, the temperature usually drops to around 21 °C (69.5 °F). However, it dropped to 18 °C (64.4 °F) in September 1995.
On the warmest days, the temperature usually reaches around 36.5 °C (97.5 °F). However, it reached 37.4 °C (99.3 °F) in September 2007.
Precipitation amounts to only 1 mm (0 in), distributed over 0 days.
The day lasts on average 12 hours and 5 minutes.
There are on average 9.5 hours of sunshine per day. So, the sun shines 80% of the time.
The average humidity is 64%.
The average wind speed is 28 kph (17 mph).
The average sea temperature is of 27 °C (80 °F). Therefore, the sea is pleasantly warm and allows long swims.
October, the hottest month of the year, is generally a very hot month. The average temperature is of 29.0 °C (84 °F), with a minimum of 23.8 °C (74.8 °F) and a maximum of 34.3 °C (93.7 °F).
On the coldest nights, the temperature usually drops to around 22 °C (72 °F). However, it dropped to 20.7 °C (69.3 °F) in October 1994.
On the warmest days, the temperature usually reaches around 36.5 °C (97.5 °F). However, it reached 37.4 °C (99.3 °F) in October 1998.
Precipitation amounts to only 1 mm (0 in), distributed over 0 days.
The day lasts on average 12 hours and 10 minutes.
There are on average 9.5 hours of sunshine per day. So, the sun shines 79% of the time.
The average humidity is 64%.
The average wind speed is 30 kph (18 mph).
The average sea temperature is of 27 °C (80.5 °F). Therefore, the sea is pleasantly warm and allows long swims.
November, the hottest month of the year, is generally a very hot month. The average temperature is of 29.0 °C (84 °F), with a minimum of 24 °C (75.2 °F) and a maximum of 34.1 °C (93.4 °F).
On the coldest nights, the temperature usually drops to around 22 °C (72 °F). However, it dropped to 20.9 °C (69.6 °F) in November 2002.
On the warmest days, the temperature usually reaches around 36.5 °C (97.5 °F). However, it reached 38.2 °C (100.8 °F) in November 1993.
Precipitation amounts to only 4 mm (0.2 in), distributed over 0 days.
The day lasts on average 12 hours and 20 minutes.
There are on average 9 hours of sunshine per day. So, the sun shines 75% of the time.
The average humidity is 66%.
The average wind speed is 30 kph (19 mph).
The average sea temperature is of 27 °C (81 °F). Therefore, the sea is pleasantly warm and allows long swims.
December, the hottest month of the year, is generally a very hot month. The average temperature is of 29.0 °C (84 °F), with a minimum of 24.2 °C (75.6 °F) and a maximum of 33.7 °C (92.7 °F).
On the coldest nights of the month, the temperature usually drops to around 22 °C (72 °F). However, it dropped to 21.5 °C (70.7 °F) in December 1996.
On the warmest days of the month, the temperature usually reaches around 36 °C (97 °F). However, it reached 36.6 °C (97.9 °F) in December 2005.
Precipitation amounts to 30 mm (1.2 in), distributed over 3 days.
The day lasts on average 12 hours and 20 minutes.
There are on average 8 hours of sunshine per day. So, the sun shines 64% of the time.
The average humidity is 67%.
The average wind speed is 27 kph (17 mph).
The average sea temperature is of 27.5 °C (81.5 °F). Therefore, the sea is pleasantly warm and allows long swims.