Climate - Parnaiba (Brazil)

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.
Compared to cities further west, such as Belém and São Luis, the rains are less abundant and the dry season is longer.

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.
Precipitation 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.
The sea temperature ranges from 27 °C (27 °F) in August, September, October, November to 28.5 °C (28.5 °F) in March, April, May. Here are the average sea temperatures.
On average, there are around 2820 sunshine hours per year. Here are the average sunshine hours per day.

Parnaiba - 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 °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, in January 1999, it dropped to 21 °C (69.8 °F).
On the warmest days of the month, the temperature usually reaches around 35.5 °C (95.5 °F). However, in January 2007, it reached 37.1 °C (98.8 °F).
Precipitation amounts to 120 mm (4.7 in), distributed over 9 days.
On average, there are 200 hours of sunshine per month, i.e. 6.5 hours per day.
The average humidity is 72%.
The average wind speed is 21 kph (13 kph).
The average sea temperature is of 28 °C (82 °F).

In February, 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, in February 1997, it dropped to 20.3 °C (68.5 °F).
On the warmest days of the month, the temperature usually reaches around 34 °C (93.5 °F). However, in February 2012, it reached 36.8 °C (98.2 °F).
Precipitation amounts to 180 mm (7.1 in), distributed over 13 days.
On average, there are 165 hours of sunshine per month, i.e. 6 hours per day.
The average humidity is 75%.
The average wind speed is 17 kph (11 kph).
The average sea temperature is of 28 °C (83 °F).

In March, 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 of the month, the temperature usually drops to around 22 °C (71.5 °F). However, in March 2005, it dropped to 19.9 °C (67.8 °F).
On the warmest days of the month, the temperature usually reaches around 33 °C (91.5 °F). However, in March 2010, it reached 36.3 °C (97.3 °F).
Precipitation amounts to 260 mm (10.2 in), distributed over 17 days.
On average, there are 160 hours of sunshine per month, i.e. 5 hours per day.
The average humidity is 77%.
The average wind speed is 15 kph (10 kph).
The average sea temperature is of 28.5 °C (83.5 °F).

In April, 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 of the month, the temperature usually drops to around 22 °C (71 °F). However, in April 2000, it dropped to 20.6 °C (69.1 °F).
On the warmest days of the month, the temperature usually reaches around 33 °C (91 °F). However, in April 1998, it reached 34.9 °C (94.8 °F).
Precipitation amounts to 270 mm (10.6 in), distributed over 17 days.
On average, there are 170 hours of sunshine per month, i.e. 5.5 hours per day.
The average humidity is 78%.
The average wind speed is 14 kph (9 kph).
The average sea temperature is of 28.5 °C (83.5 °F).

In May, 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 of the month, the temperature usually drops to around 21.5 °C (70.5 °F). However, in May 1994, it dropped to 19.8 °C (67.6 °F).
On the warmest days of the month, the temperature usually reaches around 32.5 °C (91 °F). However, in May 1998, it reached 34.8 °C (94.6 °F).
Precipitation amounts to 175 mm (6.9 in), distributed over 12 days.
On average, there are 210 hours of sunshine per month, i.e. 7 hours per day.
The average humidity is 74%.
The average wind speed is 16 kph (10 kph).
The average sea temperature is of 28.5 °C (83.5 °F).

In June, the coldest month of the year, 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 of the month, the temperature usually drops to around 20 °C (68 °F). However, in June 2018, it dropped to 18 °C (64.4 °F).
On the warmest days of the month, the temperature usually reaches around 33 °C (92 °F). However, in June 1998, it reached 35.3 °C (95.5 °F).
Precipitation amounts to 50 mm (2 in), distributed over 5 days.
On average, there are 240 hours of sunshine per month, i.e. 8 hours per day.
The average humidity is 70%.
The average wind speed is 16 kph (10 kph).
The average sea temperature is of 28 °C (82.5 °F).

In July, 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, in July 1995, it dropped to 17.8 °C (64 °F).
On the warmest days of the month, the temperature usually reaches around 34 °C (93.5 °F). However, in July 1998, it reached 36.4 °C (97.5 °F).
Precipitation amounts to 40 mm (1.6 in), distributed over 4 days.
On average, there are 260 hours of sunshine per month, i.e. 8.5 hours per day.
The average humidity is 68%.
The average wind speed is 17 kph (11 kph).
The average sea temperature is of 27.5 °C (81.5 °F).

In August, 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, in August 2017, it dropped to 18.6 °C (65.5 °F).
On the warmest days of the month, the temperature usually reaches around 35.5 °C (96.5 °F). However, in August 2005, it reached 37.2 °C (99 °F).
Precipitation amounts to only 4 mm (0.2 in), and all occurs in one day.
On average, there are 300 hours of sunshine per month, i.e. 9.5 hours per day.
The average humidity is 65%.
The average wind speed is 23 kph (14 kph).
The average sea temperature is of 27 °C (80.5 °F).

In September, 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 of the month, the temperature usually drops to around 21 °C (69.5 °F). However, in September 1995, it dropped to 18 °C (64.4 °F).
On the warmest days of the month, the temperature usually reaches around 36.5 °C (97.5 °F). However, in September 2007, it reached 37.4 °C (99.3 °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 64%.
The average wind speed is 28 kph (17 kph).
The average sea temperature is of 27 °C (80 °F).

In October, the warmest month of the year, 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 of the month, the temperature usually drops to around 22 °C (72 °F). However, in October 1994, it dropped to 20.7 °C (69.3 °F).
On the warmest days of the month, the temperature usually reaches around 36.5 °C (97.5 °F). However, in October 1998, it reached 37.4 °C (99.3 °F).
Precipitation amounts to only 1 mm (0 in), distributed over 0 days.
On average, there are 300 hours of sunshine per month, i.e. 9.5 hours per day.
The average humidity is 64%.
The average wind speed is 30 kph (18 kph).
The average sea temperature is of 27 °C (80.5 °F).

In November, the warmest month of the year, 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 of the month, the temperature usually drops to around 22 °C (72 °F). However, in November 2002, it dropped to 20.9 °C (69.6 °F).
On the warmest days of the month, the temperature usually reaches around 36.5 °C (97.5 °F). However, in November 1993, it reached 38.2 °C (100.8 °F).
Precipitation amounts to only 4 mm (0.2 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 66%.
The average wind speed is 30 kph (19 kph).
The average sea temperature is of 27 °C (81 °F).

In December, the warmest month of the year, 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, in December 1996, it dropped to 21.5 °C (70.7 °F).
On the warmest days of the month, the temperature usually reaches around 36 °C (97 °F). However, in December 2005, it reached 36.6 °C (97.9 °F).
Precipitation amounts to 30 mm (1.2 in), distributed over 3 days.
On average, there are 245 hours of sunshine per month, i.e. 8 hours per day.
The average humidity is 67%.
The average wind speed is 27 kph (17 kph).
The average sea temperature is of 27.5 °C (81.5 °F).