Climate - St Brandon (Mauritius)

The climate of the islets of St Brandon (or Cargados Carajos) is tropical, with a hot, rainy period from December to April and a relatively cool, dry period from June to October.
The islets are located about 400 km (245 mi) north-east of the main island of Mauritius, at the 16th parallel south, and being closer to the Equator, they have a somewhat warmer climate.

St Brandon - Climate data

In St Brandon, the average temperature of the coldest month (August) is of 24.1 °C (75.4 °F), that of the warmest months (February, March) is of 28.8 °C (83.8 °F). Here are the average temperatures.
In St Brandon, precipitation amounts to 975 millimeters (38.4 inches) per year: so, it is at an intermediate level. It ranges from 30 mm (1.2 in) in the driest month (October) to 175 mm (6.9 in) in the wettest one (February). Here is the average precipitation.
At St Brandon, the sea temperature ranges from 24 °C (75 °F) in August, September to 28 °C (82 °F) in January, February, March, April. Here are the average sea temperatures.

St Brandon - Weather by month

Based on the period 1991-2020

---

In January, the weather in St Brandon is usually very hot and muggy. The average temperature is of 28.6 °C (84 °F), with a minimum of 25.9 °C (78.6 °F) and a maximum of 31.4 °C (88.5 °F).
On the coldest nights of the month, the temperature usually drops to around 24 °C (75 °F). However, it dropped to 22.5 °C (72.5 °F) in January 1999.
On the warmest days of the month, the temperature usually reaches around 33.5 °C (92.5 °F). However, it reached 35.6 °C (96.1 °F) in January 2020.
Precipitation amounts to 145 mm (5.7 in), distributed over 11 days.
The day lasts on average 13 hours and 0 minutes.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is 20 kph (12 mph).
The average sea temperature is of 28 °C (82.5 °F). Therefore, the sea is pleasantly warm and allows long swims.

---

In February, the hottest month of the year, the weather in St Brandon is usually very hot and muggy. The average temperature is of 28.8 °C (84 °F), with a minimum of 26.1 °C (79 °F) and a maximum of 31.4 °C (88.5 °F).
On the coldest nights of the month, the temperature usually drops to around 23.5 °C (74.5 °F). However, it dropped to 20.6 °C (69.1 °F) in February 2013.
On the warmest days of the month, the temperature usually reaches around 33.5 °C (92.5 °F). However, it reached 35.1 °C (95.2 °F) in February 2007.
Precipitation amounts to 175 mm (6.9 in), distributed over 12 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 19 kph (12 mph).
The average sea temperature is of 28 °C (82.5 °F). Therefore, the sea is pleasantly warm and allows long swims.

---

In March, the hottest month of the year, the weather in St Brandon is usually very hot and muggy. The average temperature is of 28.8 °C (84 °F), with a minimum of 26.2 °C (79.2 °F) and a maximum of 31.3 °C (88.3 °F).
On the coldest nights, the temperature usually drops to around 24 °C (75 °F). However, it dropped to 21 °C (69.8 °F) in March 2008.
On the warmest days, the temperature usually reaches around 33.5 °C (92 °F). However, it reached 34.9 °C (94.8 °F) in March 2016.
Precipitation amounts to 140 mm (5.5 in), distributed over 13 days.
The day lasts on average 12 hours and 10 minutes.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is 21 kph (13 mph).
The average sea temperature is of 28 °C (82.5 °F). Therefore, the sea is pleasantly warm and allows long swims.

---

In April, the weather in St Brandon is usually very hot and muggy. The average temperature is of 28.1 °C (83 °F), with a minimum of 25.7 °C (78.3 °F) and a maximum of 30.5 °C (86.9 °F).
On the coldest nights, the temperature usually drops to around 23.5 °C (74.5 °F). However, it dropped to 21.8 °C (71.2 °F) in April 1997.
On the warmest days, the temperature usually reaches around 32.5 °C (90.5 °F). However, it reached 34 °C (93.2 °F) in April 2016.
Precipitation amounts to 120 mm (4.7 in), distributed over 11 days.
The day lasts on average 11 hours and 40 minutes.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is 23 kph (14 mph).
The average sea temperature is of 28 °C (82.5 °F). Therefore, the sea is pleasantly warm and allows long swims.

---

In May, the weather in St Brandon is usually warm to hot and muggy. The average temperature is of 26.8 °C (80 °F), with a minimum of 24.6 °C (76.3 °F) and a maximum of 29 °C (84.2 °F).
On the coldest nights, the temperature usually drops to around 22.5 °C (72.5 °F). However, it dropped to 20 °C (68 °F) in May 2004.
On the warmest days, the temperature usually reaches around 31.5 °C (88.5 °F). However, it reached 33.2 °C (91.8 °F) in May 2016.
Precipitation amounts to 75 mm (3 in), distributed over 10 days.
The day lasts on average 11 hours and 20 minutes.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is 26 kph (16 mph).
The average sea temperature is of 27 °C (80.5 °F). Therefore, the sea is pleasantly warm and allows long swims.

---

In June, the weather in St Brandon is usually warm to hot and muggy. The average temperature is of 25.2 °C (77 °F), with a minimum of 23.2 °C (73.8 °F) and a maximum of 27.1 °C (80.8 °F).
On the coldest nights, the temperature usually drops to around 21 °C (70 °F). However, it dropped to 19.2 °C (66.6 °F) in June 1993.
On the warmest days, the temperature usually reaches around 29.5 °C (85.5 °F). However, it reached 31 °C (87.8 °F) in June 2015.
Precipitation amounts to 45 mm (1.8 in), distributed over 11 days.
The day lasts on average 11 hours and 5 minutes. June 21, the winter solstice, is the shortest day of the year in the Southern Hemisphere.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is 28 kph (17 mph).
The average sea temperature is of 26 °C (79 °F). Therefore, the sea is warm enough for swimming.

---

In July, the weather in St Brandon is usually warm to hot and muggy. The average temperature is of 24.2 °C (76 °F), with a minimum of 22.2 °C (72 °F) and a maximum of 26.2 °C (79.2 °F).
On the coldest nights of the month, the temperature usually drops to around 20.5 °C (68.5 °F). However, it dropped to 18 °C (64.4 °F) in July 1993.
On the warmest days of the month, the temperature usually reaches around 28.5 °C (83.5 °F). However, it reached 32.3 °C (90.1 °F) in July 2010.
Precipitation amounts to 45 mm (1.8 in), distributed over 12 days.
The day lasts on average 11 hours and 10 minutes.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is 30 kph (19 mph).
The average sea temperature is of 25 °C (77 °F). Therefore, the sea is warm enough for swimming.

---

In August, the coolest month of the year, the weather in St Brandon is usually warm to hot and muggy. The average temperature is of 24.1 °C (75 °F), with a minimum of 21.9 °C (71.4 °F) and a maximum of 26.3 °C (79.3 °F).
On the coldest nights of the month, the temperature usually drops to around 20 °C (68.5 °F). However, it dropped to 17.6 °C (63.7 °F) in August 1992.
On the warmest days of the month, the temperature usually reaches around 28.5 °C (83 °F). However, it reached 29.8 °C (85.6 °F) in August 2008.
Precipitation amounts to 45 mm (1.8 in), distributed over 11 days.
The day lasts on average 11 hours and 35 minutes.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is 29 kph (18 mph).
The average sea temperature is of 24 °C (75 °F). Therefore, the sea is warm enough for swimming.

---

In September, the weather in St Brandon is usually warm to hot and muggy. The average temperature is of 24.6 °C (76 °F), with a minimum of 22.3 °C (72.1 °F) and a maximum of 26.9 °C (80.4 °F).
On the coldest nights, the temperature usually drops to around 20.5 °C (69 °F). However, it dropped to 18.9 °C (66 °F) in September 1996.
On the warmest days, the temperature usually reaches around 29 °C (84 °F). However, it reached 30.5 °C (86.9 °F) in September 2015.
Precipitation amounts to 35 mm (1.4 in), distributed over 8 days.
The day lasts on average 12 hours and 0 minutes.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is 27 kph (17 mph).
The average sea temperature is of 24 °C (75 °F). Therefore, the sea is warm enough for swimming.

---

In October, the weather in St Brandon is usually warm to hot and muggy. The average temperature is of 25.5 °C (78 °F), with a minimum of 23.1 °C (73.6 °F) and a maximum of 27.9 °C (82.2 °F).
On the coldest nights, the temperature usually drops to around 21.5 °C (70.5 °F). However, it dropped to 19.2 °C (66.6 °F) in October 1999.
On the warmest days, the temperature usually reaches around 30 °C (86 °F). However, it reached 31.7 °C (89.1 °F) in October 2017.
Precipitation amounts to 30 mm (1.2 in), distributed over 6 days.
The day lasts on average 12 hours and 30 minutes.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is 27 kph (17 mph).
The average sea temperature is of 25 °C (77 °F). Therefore, the sea is warm enough for swimming.

---

In November, the weather in St Brandon is usually warm to hot and muggy. The average temperature is of 26.8 °C (80 °F), with a minimum of 24.2 °C (75.6 °F) and a maximum of 29.4 °C (84.9 °F).
On the coldest nights, the temperature usually drops to around 22 °C (71.5 °F). However, it dropped to 20.6 °C (69.1 °F) in November 1995.
On the warmest days, the temperature usually reaches around 31.5 °C (88.5 °F). However, it reached 33.5 °C (92.3 °F) in November 2018.
Precipitation amounts to 35 mm (1.4 in), distributed over 5 days.
The day lasts on average 12 hours and 55 minutes.
The average humidity is 77%. Hence, the air is normally humid.
The average wind speed is 24 kph (15 mph).
The average sea temperature is of 25 °C (77 °F). Therefore, the sea is warm enough for swimming.

---

In December, the weather in St Brandon is usually very hot and muggy. The average temperature is of 28.0 °C (82 °F), with a minimum of 25.3 °C (77.5 °F) and a maximum of 30.8 °C (87.4 °F).
On the coldest nights of the month, the temperature usually drops to around 23 °C (73.5 °F). However, it dropped to 19 °C (66.2 °F) in December 2010.
On the warmest days of the month, the temperature usually reaches around 33 °C (91 °F). However, it reached 36.4 °C (97.5 °F) in December 2015.
Precipitation amounts to 90 mm (3.5 in), distributed over 9 days.
The day lasts on average 13 hours and 5 minutes. December 21, the summer solstice, is the longest day of the year in the Southern Hemisphere.
The average humidity is 77%. Hence, the air is normally humid.
The average wind speed is 21 kph (13 mph).
The average sea temperature is of 27 °C (80.5 °F). Therefore, the sea is pleasantly warm and allows long swims.