Climate - Diourbel (Senegal)

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Diourbel's climate is tropical semi-arid, with a long, dry season from November to May, and a wet, rainy season that runs roughly from late June to early October. The total rainfall that falls in a year is not low, but the climate can be defined as semi-arid because the dry season is very long.
The city is located in the center of Senegal, about 120 km (75 mi) east of Dakar.
During the day it is hot all year round, but from November to March, nights are cool and the humidity is lower.
All year round, however, a hot, dry wind can blow from the interior, maybe just for a day or two.

Diourbel - Climate data

The average temperature of the coldest month (January) is of 25.5 °C (77.9 °F), that of the warmest month (June) is of 30.6 °C (87.2 °F). Here are the average temperatures.
Precipitation amounts to 610 millimeters (24 inches) per year: so, it is at an intermediate level. It ranges from 0 mm (0 in) in the driest months (January, February, March, April, May, November, December) to 250 mm (9.8 in) in the wettest one (September). Here is the average precipitation.

Diourbel - Weather by month

Based on the period 1991-2020

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In January, the coldest month of the year, the weather in Diourbel is usually warm to hot. However, there are remarkable differences between night and day. The average temperature is of 25.5 °C (78 °F), with a minimum of 16.6 °C (61.9 °F) and a maximum of 34.4 °C (93.8 °F).
On the coldest nights of the month, the temperature usually drops to around 12 °C (53.5 °F).
On the warmest days of the month, the temperature usually reaches around 39 °C (102 °F). However, it reached 43.2 °C (109.8 °F) in January 2010.
Precipitation amounts to only 0 mm (0 in), so on average it never rains in the whole month.
The day lasts on average 11 hours and 25 minutes.
The average humidity is 34%. Hence, the air is normally dry.
The average wind speed is 6 kph (4 mph).

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In February, the weather in Diourbel is usually warm to hot. However, there are remarkable differences between night and day. The average temperature is of 27.0 °C (81 °F), with a minimum of 17.9 °C (64.2 °F) and a maximum of 36.1 °C (97 °F).
On the coldest nights of the month, the temperature usually drops to around 13 °C (55.5 °F).
On the warmest days of the month, the temperature usually reaches around 40.5 °C (104.5 °F). However, it reached 43.3 °C (109.9 °F) in February 2010.
Precipitation amounts to only 0 mm (0 in), so on average it never rains in the whole month.
The day lasts on average 11 hours and 40 minutes.
The average humidity is 36%.
The average wind speed is 6 kph (4 mph).

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In March, the weather in Diourbel is usually very hot. However, there are remarkable differences between night and day. The average temperature is of 28.6 °C (84 °F), with a minimum of 18.9 °C (66 °F) and a maximum of 38.4 °C (101.1 °F).
On the coldest nights, the temperature usually drops to around 14.5 °C (58.5 °F).
On the warmest days, the temperature usually reaches around 42.5 °C (108.5 °F). However, it reached 44.7 °C (112.5 °F) in March 2017.
Precipitation amounts to only 0 mm (0 in), so on average it never rains in the whole month.
The day lasts on average 12 hours and 5 minutes.
The average humidity is 38%.
The average wind speed is 7 kph (4 mph).

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In April, the weather in Diourbel is usually very hot. However, there are remarkable differences between night and day. The average temperature is of 29.6 °C (85 °F), with a minimum of 19.5 °C (67 °F) and a maximum of 39.7 °C (103.5 °F).
On the coldest nights, the temperature usually drops to around 15.5 °C (60 °F).
On the warmest days, the temperature usually reaches around 44 °C (111.5 °F). However, it reached 47 °C (116.6 °F) in April 2016.
Precipitation amounts to only 0 mm (0 in), so on average it never rains in the whole month.
The day lasts on average 12 hours and 30 minutes.
The average humidity is 43%.
The average wind speed is 8 kph (5 mph).

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In May, the weather in Diourbel is usually very hot. However, there are remarkable differences between night and day. The average temperature is of 30.5 °C (87 °F), with a minimum of 20.9 °C (69.7 °F) and a maximum of 40 °C (104.1 °F).
On the coldest nights, the temperature usually drops to around 17 °C (62.5 °F).
On the warmest days, the temperature usually reaches around 44.5 °C (112 °F). However, it reached 46.3 °C (115.3 °F) in May 2020.
Precipitation amounts to only 0 mm (0 in), so on average it never rains in the whole month.
The day lasts on average 12 hours and 50 minutes.
The average humidity is 48%.
The average wind speed is 7 kph (4 mph).

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In June, the warmest month of the year, the weather in Diourbel is usually very hot. However, there are remarkable differences between night and day. The average temperature is of 30.6 °C (87 °F), with a minimum of 23 °C (73.3 °F) and a maximum of 38.3 °C (101 °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 42.5 °C (108.5 °F). However, it reached 45.6 °C (114.1 °F) in June 1992.
Precipitation amounts to 20 mm (0.8 in), and all occurs in one day.
The day lasts on average 13 hours and 0 minutes. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
The average humidity is 60%.
The average wind speed is 7 kph (4 mph).

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In July, the weather in Diourbel is usually very hot. The average temperature is of 29.8 °C (86 °F), with a minimum of 24 °C (75.3 °F) and a maximum of 35.5 °C (96 °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 39.5 °C (103.5 °F). However, it reached 44 °C (111.2 °F) in July 1995.
Precipitation amounts to 135 mm (5.3 in), distributed over 5 days.
The day lasts on average 12 hours and 55 minutes.
The average humidity is 70%. Hence, the air is normally humid.
The average wind speed is 6 kph (4 mph).

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In August, the weather in Diourbel is usually very hot. The average temperature is of 29.0 °C (84 °F), with a minimum of 23.9 °C (75 °F) and a maximum of 34 °C (93.3 °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 37.5 °C (100 °F). However, it reached 40.8 °C (105.4 °F) in August 1997.
Precipitation amounts to 175 mm (6.9 in), distributed over 9 days.
The day lasts on average 12 hours and 35 minutes.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is 4 kph (3 mph).

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In September, the weather in Diourbel is usually very hot. The average temperature is of 28.9 °C (84 °F), with a minimum of 23.6 °C (74.5 °F) and a maximum of 34.2 °C (93.5 °F).
On the coldest nights, the temperature usually drops to around 19 °C (66.5 °F).
On the warmest days, the temperature usually reaches around 37.5 °C (99.5 °F). However, it reached 39.2 °C (102.6 °F) in September 2017.
Precipitation amounts to 250 mm (9.8 in), distributed over 7 days.
The day lasts on average 12 hours and 10 minutes.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is 4 kph (2 mph).

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In October, the weather in Diourbel is usually very hot. However, there are remarkable differences between night and day. The average temperature is of 30.3 °C (86 °F), with a minimum of 23.3 °C (74 °F) and a maximum of 37.2 °C (99 °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 40.5 °C (105 °F). However, it reached 42.5 °C (108.5 °F) in October 2017.
Precipitation amounts to 25 mm (1 in), distributed over 2 days.
The day lasts on average 11 hours and 50 minutes.
The average humidity is 65%.
The average wind speed is 4 kph (2 mph).

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In November, the weather in Diourbel is usually very hot. However, there are remarkable differences between night and day. The average temperature is of 28.9 °C (84 °F), with a minimum of 19.9 °C (67.8 °F) and a maximum of 37.9 °C (100.2 °F).
On the coldest nights, the temperature usually drops to around 15.5 °C (59.5 °F).
On the warmest days, the temperature usually reaches around 40.5 °C (105 °F). However, it reached 43 °C (109.4 °F) in November 2017.
Precipitation amounts to only 0 mm (0 in), so on average it never rains in the whole month.
The day lasts on average 11 hours and 25 minutes.
The average humidity is 44%.
The average wind speed is 4 kph (3 mph).

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In December, the weather in Diourbel is usually warm to hot. However, there are remarkable differences between night and day. The average temperature is of 26.3 °C (79 °F), with a minimum of 17.5 °C (63.5 °F) and a maximum of 35.1 °C (95.2 °F).
On the coldest nights of the month, the temperature usually drops to around 12.5 °C (55 °F).
On the warmest days of the month, the temperature usually reaches around 39 °C (102.5 °F). However, it reached 42.8 °C (109 °F) in December 2016.
Precipitation amounts to only 0 mm (0 in), so on average it never rains in the whole month.
The day lasts on average 11 hours and 20 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
The average humidity is 38%.
The average wind speed is 5 kph (3 mph).