Climate - Saint Denis (Reunion)

The climate of Saint-Denis is tropical, with a hot, rainy period from December to April and a relatively cool, dry period from June to October. In the latter, the south-east trade winds blow, and some short showers can form. The sun shines for a good number of hours all year round.
The city is the capital of the island of Réunion and is located on the north coast.

The average temperature of the coldest month (July) is of 21.8 °C (71.3 °F), that of the warmest month (February) is of 27.1 °C (80.7 °F). Here are the average temperatures.
Precipitation amounts to 1660 millimeters (65.4 inches) per year: it is therefore abundant. It ranges from 45 mm (1.8 in) in the driest month (October) to 350 mm (13.8 in) in the wettest one (February). Here is the average precipitation.
The sea temperature ranges from 24 °C (24 °F) in August, September to 28.5 °C (28.5 °F) in February, March. Here are the average sea temperatures.
On average, there are around 2560 sunshine hours per year. Here are the average sunshine hours per day.

Saint Denis - 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 26.9 °C (80 °F), with a minimum of 23.6 °C (74.5 °F) and a maximum of 30.2 °C (86.3 °F).
On the coldest nights of the month, the temperature usually drops to around 21.5 °C (70.5 °F). However, in January 2002, it dropped to 19.1 °C (66.4 °F).
On the warmest days of the month, the temperature usually reaches around 32 °C (90 °F). However, in January 1994, it reached 33.3 °C (91.9 °F).
Precipitation amounts to 280 mm (11 in), distributed over 13 days.
On average, there are 215 hours of sunshine per month, i.e. 7 hours per day.
The average humidity is 76%.
The average wind speed is 20 kph (12 kph).
The average sea temperature is of 28 °C (82.5 °F).

In February, the warmest month of the year, the average temperature is of 27.1 °C (81 °F), with a minimum of 23.8 °C (74.8 °F) and a maximum of 30.3 °C (86.6 °F).
On the coldest nights of the month, the temperature usually drops to around 21.5 °C (70.5 °F). However, in February 2000, it dropped to 19.9 °C (67.8 °F).
On the warmest days of the month, the temperature usually reaches around 32 °C (90 °F). However, in February 1995, it reached 34 °C (93.2 °F).
Precipitation amounts to 350 mm (13.8 in), distributed over 14 days.
On average, there are 195 hours of sunshine per month, i.e. 7 hours per day.
The average humidity is 77%.
The average wind speed is 19 kph (12 kph).
The average sea temperature is of 28.5 °C (83 °F).

In March, the average temperature is of 26.6 °C (80 °F), with a minimum of 23.3 °C (73.9 °F) and a maximum of 30 °C (85.9 °F).
On the coldest nights of the month, the temperature usually drops to around 20.5 °C (69 °F). However, in March 2015, it dropped to 18.5 °C (65.3 °F).
On the warmest days of the month, the temperature usually reaches around 31.5 °C (89 °F). However, in March 2002, it reached 33.1 °C (91.6 °F).
Precipitation amounts to 235 mm (9.3 in), distributed over 13 days.
On average, there are 215 hours of sunshine per month, i.e. 7 hours per day.
The average humidity is 76%.
The average wind speed is 20 kph (12 kph).
The average sea temperature is of 28.5 °C (83 °F).

In April, the average temperature is of 25.8 °C (78 °F), with a minimum of 22.3 °C (72.1 °F) and a maximum of 29.2 °C (84.6 °F).
On the coldest nights of the month, the temperature usually drops to around 19.5 °C (67 °F). However, in April 1992, it dropped to 17.5 °C (63.5 °F).
On the warmest days of the month, the temperature usually reaches around 31 °C (87.5 °F). However, in April 2018, it reached 32.7 °C (90.9 °F).
Precipitation amounts to 155 mm (6.1 in), distributed over 11 days.
On average, there are 220 hours of sunshine per month, i.e. 7.5 hours per day.
The average humidity is 74%.
The average wind speed is 20 kph (12 kph).
The average sea temperature is of 28 °C (82 °F).

In May, the average temperature is of 24.2 °C (76 °F), with a minimum of 20.7 °C (69.3 °F) and a maximum of 27.7 °C (81.8 °F).
On the coldest nights of the month, the temperature usually drops to around 17.5 °C (63.5 °F). However, in May 2016, it dropped to 15.3 °C (59.5 °F).
On the warmest days of the month, the temperature usually reaches around 29.5 °C (85 °F). However, in May 2016, it reached 30.6 °C (87.1 °F).
Precipitation amounts to 95 mm (3.7 in), distributed over 10 days.
On average, there are 215 hours of sunshine per month, i.e. 7 hours per day.
The average humidity is 72%.
The average wind speed is 19 kph (12 kph).
The average sea temperature is of 26.5 °C (80 °F).

In June, the average temperature is of 22.6 °C (73 °F), with a minimum of 19.1 °C (66.4 °F) and a maximum of 26.2 °C (79.1 °F).
On the coldest nights of the month, the temperature usually drops to around 16 °C (61 °F). However, in June 2020, it dropped to 14.5 °C (58.1 °F).
On the warmest days of the month, the temperature usually reaches around 28 °C (82.5 °F). However, in June 1992, it reached 29.8 °C (85.6 °F).
Precipitation amounts to 75 mm (3 in), distributed over 7 days.
On average, there are 215 hours of sunshine per month, i.e. 7 hours per day.
The average humidity is 69%.
The average wind speed is 21 kph (13 kph).
The average sea temperature is of 25.5 °C (78 °F).

In July, the coldest month of the year, the average temperature is of 21.8 °C (71 °F), with a minimum of 18.3 °C (64.9 °F) and a maximum of 25.4 °C (77.7 °F).
On the coldest nights of the month, the temperature usually drops to around 15.5 °C (59.5 °F). However, in July 1991, it dropped to 13.1 °C (55.6 °F).
On the warmest days of the month, the temperature usually reaches around 27.5 °C (81 °F). However, in July 2008, it reached 29.4 °C (84.9 °F).
Precipitation amounts to 60 mm (2.4 in), distributed over 9 days.
On average, there are 220 hours of sunshine per month, i.e. 7 hours per day.
The average humidity is 69%.
The average wind speed is 23 kph (14 kph).
The average sea temperature is of 24.5 °C (76 °F).

In August, the average temperature is of 21.8 °C (71 °F), with a minimum of 18.2 °C (64.8 °F) and a maximum of 25.5 °C (77.9 °F).
On the coldest nights of the month, the temperature usually drops to around 15.5 °C (59.5 °F). However, in August 1991, it dropped to 12.8 °C (55 °F).
On the warmest days of the month, the temperature usually reaches around 27.5 °C (81 °F). However, in August 1996, it reached 29.2 °C (84.6 °F).
Precipitation amounts to 60 mm (2.4 in), distributed over 10 days.
On average, there are 210 hours of sunshine per month, i.e. 7 hours per day.
The average humidity is 68%.
The average wind speed is 23 kph (14 kph).
The average sea temperature is of 24 °C (75 °F).

In September, the average temperature is of 22.4 °C (72 °F), with a minimum of 18.7 °C (65.7 °F) and a maximum of 26 °C (78.8 °F).
On the coldest nights of the month, the temperature usually drops to around 16 °C (60.5 °F). However, in September 1993, it dropped to 13.8 °C (56.8 °F).
On the warmest days of the month, the temperature usually reaches around 28 °C (82 °F). However, in September 1992, it reached 33 °C (91.4 °F).
Precipitation amounts to 50 mm (2 in), distributed over 8 days.
On average, there are 210 hours of sunshine per month, i.e. 7 hours per day.
The average humidity is 68%.
The average wind speed is 22 kph (14 kph).
The average sea temperature is of 24 °C (75 °F).

In October, the average temperature is of 22.9 °C (73 °F), with a minimum of 18.7 °C (65.7 °F) and a maximum of 27 °C (80.6 °F).
On the coldest nights of the month, the temperature usually drops to around 17 °C (63 °F). However, in October 2006, it dropped to 13.4 °C (56.1 °F).
On the warmest days of the month, the temperature usually reaches around 29 °C (84 °F). However, in October 1991, it reached 30.5 °C (86.9 °F).
Precipitation amounts to 45 mm (1.8 in), distributed over 7 days.
On average, there are 210 hours of sunshine per month, i.e. 7 hours per day.
The average humidity is 69%.
The average wind speed is 22 kph (13 kph).
The average sea temperature is of 24.5 °C (76.5 °F).

In November, the average temperature is of 24.1 °C (75 °F), with a minimum of 19.9 °C (67.8 °F) and a maximum of 28.3 °C (82.9 °F).
On the coldest nights of the month, the temperature usually drops to around 18 °C (65 °F). However, in November 2007, it dropped to 15.6 °C (60.1 °F).
On the warmest days of the month, the temperature usually reaches around 30.5 °C (86.5 °F). However, in November 2014, it reached 31.8 °C (89.2 °F).
Precipitation amounts to 70 mm (2.8 in), distributed over 6 days.
On average, there are 210 hours of sunshine per month, i.e. 7 hours per day.
The average humidity is 70%.
The average wind speed is 20 kph (12 kph).
The average sea temperature is of 26 °C (78.5 °F).

In December, the average temperature is of 25.3 °C (78 °F), with a minimum of 21.1 °C (70 °F) and a maximum of 29.5 °C (85.1 °F).
On the coldest nights of the month, the temperature usually drops to around 20 °C (68.5 °F). However, in December 2020, it dropped to 18 °C (64.4 °F).
On the warmest days of the month, the temperature usually reaches around 31.5 °C (88.5 °F). However, in December 2019, it reached 34.5 °C (94.1 °F).
Precipitation amounts to 190 mm (7.5 in), distributed over 11 days.
On average, there are 220 hours of sunshine per month, i.e. 7 hours per day.
The average humidity is 73%.
The average wind speed is 19 kph (12 kph).
The average sea temperature is of 27 °C (81 °F).