Climate in San Andrés (Colombia)

The climate of San Andrés is tropical, hot all year round, with a rainy season from May to mid-January, and a short dry season from mid-January to April.
The period from June to October is the hottest and most humid. From late October to mid-January, the north-east trade winds blow, which are a little cooler, but still bring frequent rains because the sea is warm and provides energy.
The small island, about 12 km (7.5 mi) long, is located in the Caribbean Sea, at 12 degrees north latitude, about 200 km (125 mi) to the east of Nicaragua, and is part of the Archipelago of San Andrés, Providencia and Santa Catalina department.
Inside the island there are hills, the highest of which reaches 88 meters (298 feet) in height.
The island is located in the southern part of the hurricane trajectory. The hurricane season runs from June to November, but they are most likely from August to October.
In November 2020, the hurricanes Eta and Iota have brought strong winds and produced widespread flooding within days of each other.

Best Time

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The best time to visit San Andrés is from mid-January to April, as it is the dry season.

San Andrés - Climate data

The average temperature of the coldest month (January) is of 27.0 °C (80.6 °F), that of the warmest months (June, August) is of 28.4 °C (83.1 °F). Here are the average temperatures.
Precipitation amounts to 1885 millimeters (74.2 inches) per year: it is therefore abundant. It ranges from 25 mm (1 in) in the driest month (March) to 325 mm (12.8 in) in the wettest one (October). Here is the average precipitation.
The sea temperature ranges from 26 °C (79 °F) in March, September, November to 27 °C (81 °F) in May, June. Here are the average sea temperatures.
There are on average around 2650 sunshine hours per year. Here are the average hours of sunshine per day.

San Andrés - Weather by month

Based on the period 1991-2020

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January, the least warm month of the year, is generally a warm to hot, muggy month. The average temperature is of 27.0 °C (81 °F), with a minimum of 24.9 °C (76.9 °F) and a maximum of 29 °C (84.3 °F).
On the coldest nights of the month, the temperature usually drops to around 23 °C (73 °F).
On the warmest days of the month, the temperature usually reaches around 31.5 °C (88.5 °F).
Precipitation amounts to 75 mm (3 in), distributed over 8 days.
The day lasts on average 11 hours and 30 minutes.
There are on average 8 hours of sunshine per day. So, the sun shines 70% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is 17 kph (11 mph).
The average sea temperature is of 26.5 °C (79.5 °F). Therefore, the sea is pleasantly warm and allows long swims.

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February is generally a warm to hot, muggy month. The average temperature is of 27.0 °C (81 °F), with a minimum of 25 °C (76.9 °F) and a maximum of 29.1 °C (84.5 °F).
On the coldest nights of the month, the temperature usually drops to around 23 °C (73 °F).
On the warmest days of the month, the temperature usually reaches around 31.5 °C (88.5 °F).
Precipitation amounts to 40 mm (1.6 in), distributed over 6 days.
The day lasts on average 11 hours and 40 minutes.
There are on average 8.5 hours of sunshine per day. So, the sun shines 73% of the time.
The average humidity is 79%. Hence, the air is normally humid.
The average wind speed is 16 kph (10 mph).
The average sea temperature is of 26.5 °C (79.5 °F). Therefore, the sea is pleasantly warm and allows long swims.

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March is generally a warm to hot, muggy month. The average temperature is of 27.4 °C (81 °F), with a minimum of 25.4 °C (77.7 °F) and a maximum of 29.5 °C (85.1 °F).
On the coldest nights, the temperature usually drops to around 23.5 °C (74.5 °F).
On the warmest days, the temperature usually reaches around 31 °C (88 °F).
Precipitation amounts to 25 mm (1 in), distributed over 4 days.
The day lasts on average 12 hours and 5 minutes.
There are on average 9 hours of sunshine per day. So, the sun shines 75% of the time.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is 15 kph (9 mph).
The average sea temperature is of 26 °C (79 °F). Therefore, the sea is warm enough for swimming.

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April is generally a very hot, muggy month. The average temperature is of 28.2 °C (83 °F), with a minimum of 26 °C (78.9 °F) and a maximum of 30.3 °C (86.5 °F).
On the coldest nights, the temperature usually drops to around 24 °C (75.5 °F).
On the warmest days, the temperature usually reaches around 32.5 °C (90.5 °F).
Precipitation amounts to 35 mm (1.4 in), distributed over 5 days.
The day lasts on average 12 hours and 25 minutes.
There are on average 9 hours of sunshine per day. So, the sun shines 74% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is 13 kph (8 mph).
The average sea temperature is of 26.5 °C (80 °F). Therefore, the sea is pleasantly warm and allows long swims.

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May is generally a very hot, muggy month. The average temperature is of 28.4 °C (83 °F), with a minimum of 26.3 °C (79.3 °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).
On the warmest days, the temperature usually reaches around 32.5 °C (90 °F).
Precipitation amounts to 130 mm (5.1 in), distributed over 11 days.
The day lasts on average 12 hours and 40 minutes.
There are on average 8 hours of sunshine per day. So, the sun shines 62% of the time.
The average humidity is 83%. Hence, the air is normally humid.
The average wind speed is 13 kph (8 mph).
The average sea temperature is of 27 °C (80.5 °F). Therefore, the sea is pleasantly warm and allows long swims.

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June, the hottest month of the year, is generally a very hot, muggy month. The average temperature is of 28.4 °C (83 °F), with a minimum of 26.2 °C (79.2 °F) and a maximum of 30.6 °C (87 °F).
On the coldest nights, the temperature usually drops to around 23.5 °C (74.5 °F).
On the warmest days, the temperature usually reaches around 32.5 °C (90.5 °F).
Precipitation amounts to 205 mm (8.1 in), distributed over 18 days.
The day lasts on average 12 hours and 55 minutes.
There are on average 6 hours of sunshine per day. So, the sun shines 48% of the time.
The average humidity is 84%. Hence, the air is normally humid.
The average wind speed is 15 kph (9 mph).
The average sea temperature is of 27 °C (80 °F). Therefore, the sea is pleasantly warm and allows long swims.

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July is generally a very hot, muggy month. The average temperature is of 28.3 °C (83 °F), with a minimum of 26.2 °C (79.1 °F) and a maximum of 30.4 °C (86.7 °F).
On the coldest nights of the month, the temperature usually drops to around 23.5 °C (74 °F).
On the warmest days of the month, the temperature usually reaches around 32.5 °C (90 °F).
Precipitation amounts to 200 mm (7.9 in), distributed over 22 days.
The day lasts on average 12 hours and 50 minutes.
There are on average 6 hours of sunshine per day. So, the sun shines 47% of the time.
The average humidity is 84%. Hence, the air is normally humid.
The average wind speed is 17 kph (11 mph).
The average sea temperature is of 26.5 °C (79.5 °F). Therefore, the sea is pleasantly warm and allows long swims.

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August, the hottest month of the year, is generally a very hot, muggy month. The average temperature is of 28.4 °C (83 °F), with a minimum of 26.1 °C (78.9 °F) and a maximum of 30.7 °C (87.3 °F).
On the coldest nights of the month, the temperature usually drops to around 24 °C (75 °F).
On the warmest days of the month, the temperature usually reaches around 32.5 °C (91 °F).
Precipitation amounts to 200 mm (7.9 in), distributed over 20 days.
The day lasts on average 12 hours and 30 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 54% of the time.
The average humidity is 84%. Hence, the air is normally humid.
The average wind speed is 13 kph (8 mph).
The average sea temperature is of 26.5 °C (79.5 °F). Therefore, the sea is pleasantly warm and allows long swims.

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September is generally a very hot, muggy month. The average temperature is of 28.3 °C (83 °F), with a minimum of 25.7 °C (78.2 °F) and a maximum of 31 °C (87.7 °F).
On the coldest nights, the temperature usually drops to around 23.5 °C (74.5 °F).
On the warmest days, the temperature usually reaches around 33 °C (91 °F).
Precipitation amounts to 240 mm (9.4 in), distributed over 20 days.
The day lasts on average 12 hours and 10 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 52% of the time.
The average humidity is 84%. Hence, the air is normally humid.
The average wind speed is 9 kph (6 mph).
The average sea temperature is of 26 °C (79 °F). Therefore, the sea is warm enough for swimming.

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October is generally a very hot, muggy month. The average temperature is of 28.0 °C (82 °F), with a minimum of 25.4 °C (77.8 °F) and a maximum of 30.6 °C (87.1 °F).
On the coldest nights, the temperature usually drops to around 23.5 °C (74 °F).
On the warmest days, the temperature usually reaches around 32.5 °C (91 °F).
Precipitation amounts to 325 mm (12.8 in), distributed over 21 days.
The day lasts on average 11 hours and 50 minutes.
There are on average 6 hours of sunshine per day. So, the sun shines 50% of the time.
The average humidity is 84%. Hence, the air is normally humid.
The average wind speed is 10 kph (6 mph).
The average sea temperature is of 26.5 °C (79.5 °F). Therefore, the sea is pleasantly warm and allows long swims.

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November is generally a very hot, muggy month. The average temperature is of 27.6 °C (82 °F), with a minimum of 25.4 °C (77.7 °F) and a maximum of 29.9 °C (85.8 °F).
On the coldest nights, the temperature usually drops to around 23 °C (73.5 °F).
On the warmest days, the temperature usually reaches around 32.5 °C (90.5 °F).
Precipitation amounts to 275 mm (10.8 in), distributed over 20 days.
The day lasts on average 11 hours and 30 minutes.
There are on average 6.5 hours of sunshine per day. So, the sun shines 55% of the time.
The average humidity is 83%. Hence, the air is normally humid.
The average wind speed is 13 kph (8 mph).
The average sea temperature is of 26 °C (79 °F). Therefore, the sea is warm enough for swimming.

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December is generally a warm to hot, muggy month. The average temperature is of 27.4 °C (81 °F), with a minimum of 25.3 °C (77.5 °F) and a maximum of 29.5 °C (85.1 °F).
On the coldest nights of the month, the temperature usually drops to around 23 °C (74 °F).
On the warmest days of the month, the temperature usually reaches around 31.5 °C (89 °F).
Precipitation amounts to 140 mm (5.5 in), distributed over 15 days.
The day lasts on average 11 hours and 25 minutes.
There are on average 7 hours of sunshine per day. So, the sun shines 60% of the time.
The average humidity is 81%. Hence, the air is normally humid.
The average wind speed is 16 kph (10 mph).
The average sea temperature is of 26.5 °C (79.5 °F). Therefore, the sea is pleasantly warm and allows long swims.