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The climate of the island of Sal is
arid tropical, influenced by the north-east trade winds, and with little rainfall concentrated in the period July-October.
Temperatures are very stable, and fluctuate slightly in comparison with the average.
Sal - Climate data
In Sal, the
average temperature of the coldest month (February) is of 21.9 °C (71.5 °F), that of the warmest month (September) is of 27.6 °C (81.6 °F). Here are the average temperatures.
Sal - Average temperatures (1991-2020) | Month | Min (°C) | Max (°C) | Mean (°C) | Min (°F) | Max (°F) | Mean (°F) |
|---|
| January | 19 | 25 | 22.2 | 67 | 77 | 72 |
|---|
| February | 19 | 25 | 21.9 | 66 | 77 | 71.5 |
|---|
| March | 19 | 26 | 22.2 | 66 | 78 | 72 |
|---|
| April | 20 | 26 | 22.7 | 67 | 78 | 72.9 |
|---|
| May | 20 | 26 | 23.5 | 69 | 80 | 74.3 |
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| June | 21 | 27 | 24.4 | 71 | 81 | 75.9 |
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| July | 23 | 28 | 25.6 | 73 | 83 | 78.1 |
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| August | 24 | 30 | 27 | 75 | 86 | 80.5 |
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| September | 25 | 30 | 27.6 | 76 | 87 | 81.6 |
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| October | 24 | 30 | 26.9 | 75 | 86 | 80.5 |
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| November | 22 | 28 | 25.4 | 72 | 83 | 77.7 |
|---|
| December | 20 | 26 | 23.4 | 69 | 80 | 74.2 |
|---|
| Year | 21.4 | 27.4 | 24.35 | 70.5 | 81.4 | 76 |
|---|
In Sal,
precipitation amounts to 160 millimeters (6.3 inches) per year: it is therefore at a desert level. It ranges from 1 mm (0 in) in the driest months (April, May, June) to 52 mm (2 in) in the wettest one (September). Here is the average precipitation.
Sal - Average precipitation| Month | Millimeters | Inches | Days |
|---|
| January | 2 | 0.1 | 2 |
|---|
| February | 21 | 0.8 | 2 |
|---|
| March | 8 | 0.3 | 1 |
|---|
| April | 1 | 0.1 | 1 |
|---|
| May | 1 | 0 | 0 |
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| June | 1 | 0 | 0 |
|---|
| July | 10 | 0.4 | 3 |
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| August | 17 | 0.7 | 5 |
|---|
| September | 52 | 2.1 | 5 |
|---|
| October | 25 | 1 | 2 |
|---|
| November | 3 | 0.1 | 2 |
|---|
| December | 19 | 0.7 | 2 |
|---|
| Year | 160 | 6.3 | 25 |
|---|
At Sal, the
sea temperature ranges from 22 °C (72 °F) in February, March to 27 °C (81 °F) in September, October. Here are the average sea temperatures.
Sal - Sea temperature| Month | Celsius (°C) | Fahrenheit (°F) |
|---|
January | 23 | 73 | February | 22 | 72 | March | 22 | 72 | April | 22.5 | 72 | May | 22.5 | 73 | June | 23 | 74 | July | 24.5 | 76 | August | 26 | 79 | September | 27 | 80 | October | 27 | 80 | November | 26 | 79 | December | 24.5 | 76 | Year | 24.1 | 75.5 |
In Sal, there are on average around 2190
sunshine hours per year. Here are the average hours of sunshine per day.
Sal - Sunshine hours| Month | Average | Total |
|---|
January | 6 | 185 | February | 6.5 | 175 | March | 6.5 | 200 | April | 7 | 215 | May | 6.5 | 205 | June | 6 | 175 | July | 5 | 150 | August | 5 | 160 | September | 6 | 180 | October | 6.5 | 200 | November | 6.5 | 190 | December | 5 | 155 | Year | 6 | 2190 |
Sal - Weather by month
Based on the period 1991-2020
In
January, the weather in Sal is usually warm. The average temperature is of 22.2 °C (72 °F), with a minimum of 19.2 °C (66.5 °F) and a maximum of 25.2 °C (77.4 °F).
On the coldest nights of the month, the temperature usually drops to around 17 °C (62.5 °F). However, it dropped to 15.2 °C (59.4 °F) in January 2020.
On the warmest days of the month, the temperature usually reaches around 28 °C (82.5 °F). However, it reached 31.5 °C (88.7 °F) in January 2016.
Precipitation amounts to only 2 mm (0.1 in), distributed over 2 days.
The day lasts on average 11 hours and 20 minutes.
There are on average 6 hours of sunshine per day. So, the sun shines 52% of the time.
The average humidity is 69%.
The average wind speed is 24 kph (15 mph).
The average sea temperature is of 23 °C (73 °F). Therefore, the sea can be considered barely acceptable for swimming.
In
February, the coolest month of the year, the weather in Sal is usually warm. The average temperature is of 21.9 °C (71 °F), with a minimum of 18.8 °C (65.8 °F) and a maximum of 25.1 °C (77.2 °F).
On the coldest nights of the month, the temperature usually drops to around 16.5 °C (61.5 °F). However, it dropped to 10.2 °C (50.4 °F) in February 1994.
On the warmest days of the month, the temperature usually reaches around 28.5 °C (83 °F). However, it reached 32.3 °C (90.1 °F) in February 2010.
Precipitation amounts to 21 mm (0.8 in), distributed over 2 days.
The day lasts on average 11 hours and 35 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 54% of the time.
The average humidity is 70%.
The average wind speed is 25 kph (16 mph).
The average sea temperature is of 22 °C (72 °F). Therefore, the sea is cool for swimming.
In
March, the weather in Sal is usually warm. The average temperature is of 22.2 °C (72 °F), with a minimum of 18.9 °C (66 °F) and a maximum of 25.5 °C (78 °F).
On the coldest nights, the temperature usually drops to around 17 °C (62.5 °F). However, it dropped to 15.8 °C (60.4 °F) in March 2000.
On the warmest days, the temperature usually reaches around 29 °C (84 °F). However, it reached 32 °C (89.6 °F) in March 2002.
Precipitation amounts to only 8 mm (0.3 in), and all occurs in one day.
The day lasts on average 12 hours and 5 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 54% of the time.
The average humidity is 70%. Hence, the air is normally humid.
The average wind speed is 25 kph (15 mph).
The average sea temperature is of 22 °C (71.5 °F). Therefore, the sea is cool for swimming.
In
April, the weather in Sal is usually warm to hot and muggy. The average temperature is of 22.7 °C (73 °F), with a minimum of 19.6 °C (67.3 °F) and a maximum of 25.8 °C (78.5 °F).
On the coldest nights, the temperature usually drops to around 17.5 °C (64 °F). However, it dropped to 14.2 °C (57.6 °F) in April 1992.
On the warmest days, the temperature usually reaches around 29 °C (84.5 °F). However, it reached 32.8 °C (91 °F) in April 2001.
Precipitation amounts to only 1 mm (0 in), and all occurs in one day.
The day lasts on average 12 hours and 30 minutes.
There are on average 7 hours of sunshine per day. So, the sun shines 58% of the time.
The average humidity is 70%. Hence, the air is normally humid.
The average wind speed is 25 kph (16 mph).
The average sea temperature is of 22.5 °C (72 °F). Therefore, the sea can be considered barely acceptable for swimming.
In
May, the weather in Sal is usually warm to hot and muggy. The average temperature is of 23.5 °C (74 °F), with a minimum of 20.5 °C (68.9 °F) and a maximum of 26.5 °C (79.6 °F).
On the coldest nights, the temperature usually drops to around 18.5 °C (65 °F). However, it dropped to 15.5 °C (59.9 °F) in May 1993.
On the warmest days, the temperature usually reaches around 29 °C (84.5 °F). However, it reached 32 °C (89.6 °F) in May 2003.
Precipitation amounts to only 1 mm (0 in), distributed over 0 days.
The day lasts on average 12 hours and 55 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 51% of the time.
The average humidity is 72%. Hence, the air is normally humid.
The average wind speed is 26 kph (16 mph).
The average sea temperature is of 22.5 °C (72.5 °F). Therefore, the sea can be considered barely acceptable for swimming.
In
June, the weather in Sal is usually warm to hot and muggy. The average temperature is of 24.4 °C (76 °F), with a minimum of 21.5 °C (70.7 °F) and a maximum of 27.3 °C (81.2 °F).
On the coldest nights, the temperature usually drops to around 19.5 °C (67.5 °F). However, it dropped to 15.6 °C (60.1 °F) in June 1994.
On the warmest days, the temperature usually reaches around 30.5 °C (86.5 °F). However, it reached 32.3 °C (90.1 °F) in June 1995.
Precipitation amounts to only 1 mm (0 in), distributed over 0 days.
The day lasts on average 13 hours and 5 minutes. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
There are on average 6 hours of sunshine per day. So, the sun shines 44% of the time.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is 24 kph (15 mph).
The average sea temperature is of 23 °C (73.5 °F). Therefore, the sea can be considered barely acceptable for swimming.
In
July, the weather in Sal is usually warm to hot and muggy. The average temperature is of 25.6 °C (78 °F), with a minimum of 22.8 °C (73 °F) and a maximum of 28.5 °C (83.3 °F).
On the coldest nights of the month, the temperature usually drops to around 21 °C (70 °F). However, it dropped to 19.5 °C (67.1 °F) in July 2018.
On the warmest days of the month, the temperature usually reaches around 31.5 °C (89 °F). However, it reached 33.9 °C (93 °F) in July 1995.
Precipitation amounts to 10 mm (0.4 in), distributed over 3 days.
The day lasts on average 13 hours and 0 minutes.
There are on average 5 hours of sunshine per day. So, the sun shines 37% of the time.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is 20 kph (12 mph).
The average sea temperature is of 24.5 °C (75.5 °F). Therefore, the sea is warm enough for swimming.
In
August, the weather in Sal is usually warm to hot and muggy. The average temperature is of 27.0 °C (81 °F), with a minimum of 24.1 °C (75.3 °F) and a maximum of 29.9 °C (85.8 °F).
On the coldest nights of the month, the temperature usually drops to around 21.5 °C (71 °F). However, it dropped to 19.5 °C (67.1 °F) in August 1991.
On the warmest days of the month, the temperature usually reaches around 32 °C (90 °F). However, it reached 35 °C (95 °F) in August 2010.
Precipitation amounts to 17 mm (0.7 in), distributed over 5 days.
The day lasts on average 12 hours and 35 minutes.
There are on average 5 hours of sunshine per day. So, the sun shines 41% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is 18 kph (11 mph).
The average sea temperature is of 26 °C (79 °F). Therefore, the sea is warm enough for swimming.
In
September, the hottest month of the year, the weather in Sal is usually very hot and muggy. The average temperature is of 27.6 °C (82 °F), with a minimum of 24.7 °C (76.4 °F) and a maximum of 30.4 °C (86.8 °F).
On the coldest nights, the temperature usually drops to around 21.5 °C (71 °F). However, it dropped to 15 °C (59 °F) in September 2016.
On the warmest days, the temperature usually reaches around 32.5 °C (91 °F). However, it reached 35.2 °C (95.4 °F) in September 2012.
Precipitation amounts to 52 mm (2 in), distributed over 5 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 77%. Hence, the air is normally humid.
The average wind speed is 20 kph (12 mph).
The average sea temperature is of 27 °C (80.5 °F). Therefore, the sea is pleasantly warm and allows long swims.
In
October, the weather in Sal is usually warm to hot and muggy. The average temperature is of 26.9 °C (80 °F), with a minimum of 23.9 °C (75 °F) and a maximum of 30 °C (86 °F).
On the coldest nights, the temperature usually drops to around 21 °C (70 °F). However, it dropped to 20.4 °C (68.7 °F) in October 1994.
On the warmest days, the temperature usually reaches around 33 °C (91 °F). However, it reached 35.2 °C (95.4 °F) in October 2006.
Precipitation amounts to 25 mm (1 in), distributed over 2 days.
The day lasts on average 11 hours and 40 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 55% of the time.
The average humidity is 75%. 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.
In
November, the weather in Sal is usually warm to hot and muggy. The average temperature is of 25.4 °C (78 °F), with a minimum of 22.4 °C (72.2 °F) and a maximum of 28.4 °C (83.1 °F).
On the coldest nights, the temperature usually drops to around 19.5 °C (67 °F). However, it dropped to 17.5 °C (63.5 °F) in November 2020.
On the warmest days, the temperature usually reaches around 31.5 °C (88.5 °F). However, it reached 35 °C (95 °F) in November 1995.
Precipitation amounts to only 3 mm (0.1 in), distributed over 2 days.
The day lasts on average 11 hours and 20 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 56% 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 26 °C (78.5 °F). Therefore, the sea is warm enough for swimming.
In
December, the weather in Sal is usually warm to hot and muggy. The average temperature is of 23.4 °C (74 °F), with a minimum of 20.4 °C (68.8 °F) and a maximum of 26.4 °C (79.6 °F).
On the coldest nights of the month, the temperature usually drops to around 18 °C (64 °F). However, it dropped to 14.5 °C (58.1 °F) in December 1996.
On the warmest days of the month, the temperature usually reaches around 29 °C (84.5 °F). However, it reached 32 °C (89.6 °F) in December 2018.
Precipitation amounts to 19 mm (0.7 in), distributed over 2 days.
The day lasts on average 11 hours and 10 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
There are on average 5 hours of sunshine per day. So, the sun shines 45% of the time.
The average humidity is 70%. Hence, the air is normally humid.
The average wind speed is 23 kph (14 mph).
The average sea temperature is of 24.5 °C (75.5 °F). Therefore, the sea is warm enough for swimming.