, that is, hot and rainy all year round. However, even though there is no dry season, the rains decrease somewhat in the austral winter, from June to September.
The city is located in the extreme south of Colombia, at 4 degrees south latitude, in the Amazonas department, on the banks of the Amazon River. Nearby are the cities of Tabatinga, Brazil, and Santa Rosa de Yavarí, Peru. Further south, along the Javary River, is the Brazilian town of Benjamin Constant.
Occasionally, in the austral winter, there can be slightly cool periods, maybe just a day or two, with highs of 24/25 °C (75/77 °F). In July 2010, there were two days with a maximum temperature of 20 °C (68 °F).
The best time to visit Leticia is from June to September, being the one in which the rains are a little less frequent and the sun is seen a little more often. It must be said that even in this period, the rains are frequent and abundant, although less than in the rest of the year.
. Here are the average temperatures.
January is generally a warm to hot, muggy month. The average temperature is of
27.2 °C, with a minimum of
23.2 °C and a maximum of
31.2 °C.

On the coldest nights of the month, the temperature usually drops to around
20.5 °C.

On the warmest days of the month, the temperature usually reaches around
34 °C.

Precipitation amounts to
355 mm, distributed over 24 days.
The day lasts on average 12 hours and 20 minutes.

There are on average 4.5 hours of sunshine per day. So, the sun shines 35% of the time.
The average humidity is 87%. Hence, the air is normally humid.
The average wind speed is of
3.6 kph.
February is generally a warm to hot, muggy month. The average temperature is of
27.2 °C, with a minimum of
23.1 °C and a maximum of
31.2 °C.

On the coldest nights of the month, the temperature usually drops to around
21 °C.

On the warmest days of the month, the temperature usually reaches around
34 °C.

Precipitation amounts to
335 mm, distributed over 21 days.
The day lasts on average 12 hours and 10 minutes.

There are on average 4 hours of sunshine per day. So, the sun shines 34% of the time.
The average humidity is 87%. Hence, the air is normally humid.
The average wind speed is of
3.5 kph.
March is generally a warm to hot, muggy month. The average temperature is of
27.3 °C, with a minimum of
23.3 °C and a maximum of
31.2 °C.

On the coldest nights of the month, the temperature usually drops to around
21.5 °C.

On the warmest days of the month, the temperature usually reaches around
34 °C.

Precipitation amounts to
350 mm, distributed over 22 days.
The day lasts on average 12 hours and 5 minutes.

There are on average 4 hours of sunshine per day. So, the sun shines 35% of the time.
The average humidity is 87%. Hence, the air is normally humid.
The average wind speed is of
3.6 kph.
April is generally a warm to hot, muggy month. The average temperature is of
27.1 °C, with a minimum of
23.2 °C and a maximum of
31 °C.

On the coldest nights of the month, the temperature usually drops to around
21 °C.

On the warmest days of the month, the temperature usually reaches around
33.5 °C.

Precipitation amounts to
350 mm, distributed over 22 days.
The day lasts on average 12 hours and 0 minutes.

There are on average 4.5 hours of sunshine per day. So, the sun shines 39% of the time.
The average humidity is 87%. Hence, the air is normally humid.
The average wind speed is of
3.3 kph.
May is generally a warm to hot, muggy month. The average temperature is of
26.7 °C, with a minimum of
23 °C and a maximum of
30.5 °C.

On the coldest nights of the month, the temperature usually drops to around
20.5 °C.

On the warmest days of the month, the temperature usually reaches around
33 °C.

Precipitation amounts to
290 mm, distributed over 23 days.
The day lasts on average 11 hours and 55 minutes.

There are on average 4.5 hours of sunshine per day. So, the sun shines 40% of the time.
The average humidity is 87%. Hence, the air is normally humid.
The average wind speed is of
3.2 kph.
June, the least warm month of the year, is generally a warm to hot, muggy month. The average temperature is of
26.2 °C, with a minimum of
22.3 °C and a maximum of
30.2 °C.

On the coldest nights of the month, the temperature usually drops to around
18.5 °C.

On the warmest days of the month, the temperature usually reaches around
32.5 °C.

Precipitation amounts to
205 mm, distributed over 19 days.
The day lasts on average 11 hours and 55 minutes.

There are on average 5 hours of sunshine per day. So, the sun shines 41% of the time.
The average humidity is 86%. Hence, the air is normally humid.
The average wind speed is of
3.2 kph.
July is generally a warm to hot, muggy month. The average temperature is of
26.3 °C, with a minimum of
21.9 °C and a maximum of
30.7 °C.

On the coldest nights of the month, the temperature usually drops to around
18 °C.

On the warmest days of the month, the temperature usually reaches around
33.5 °C.

Precipitation amounts to
160 mm, distributed over 16 days.
The day lasts on average 11 hours and 55 minutes.

There are on average 6 hours of sunshine per day. So, the sun shines 51% of the time.
The average humidity is 84%. Hence, the air is normally humid.
The average wind speed is of
3.3 kph.
August is generally a warm to hot, muggy month. The average temperature is of
26.8 °C, with a minimum of
21.9 °C and a maximum of
31.6 °C.

On the coldest nights of the month, the temperature usually drops to around
18.5 °C.

On the warmest days of the month, the temperature usually reaches around
34 °C.

Precipitation amounts to
170 mm, distributed over 16 days.
The day lasts on average 12 hours and 0 minutes.

There are on average 6.5 hours of sunshine per day. So, the sun shines 53% of the time.
The average humidity is 82%. Hence, the air is normally humid.
The average wind speed is of
3.5 kph.
September is generally a warm to hot, muggy month. The average temperature is of
27.4 °C, with a minimum of
22.4 °C and a maximum of
32.3 °C.

On the coldest nights of the month, the temperature usually drops to around
19 °C.

On the warmest days of the month, the temperature usually reaches around
35.5 °C.

Precipitation amounts to
235 mm, distributed over 17 days.
The day lasts on average 12 hours and 5 minutes.

There are on average 6 hours of sunshine per day. So, the sun shines 48% of the time.
The average humidity is 83%. Hence, the air is normally humid.
The average wind speed is of
3.7 kph.
October is generally a warm to hot, muggy month. The average temperature is of
27.5 °C, with a minimum of
22.9 °C and a maximum of
32.2 °C.

On the coldest nights of the month, the temperature usually drops to around
20.5 °C.

On the warmest days of the month, the temperature usually reaches around
35.5 °C.

Precipitation amounts to
265 mm, distributed over 19 days.
The day lasts on average 12 hours and 10 minutes.

There are on average 5.5 hours of sunshine per day. So, the sun shines 45% of the time.
The average humidity is 84%. Hence, the air is normally humid.
The average wind speed is of
3.6 kph.
November, the hottest month of the year, is generally a warm to hot, muggy month. The average temperature is of
27.5 °C, with a minimum of
23.2 °C and a maximum of
31.9 °C.

On the coldest nights of the month, the temperature usually drops to around
20.5 °C.

On the warmest days of the month, the temperature usually reaches around
34.5 °C.

Precipitation amounts to
300 mm, distributed over 21 days.
The day lasts on average 12 hours and 20 minutes.

There are on average 5 hours of sunshine per day. So, the sun shines 42% of the time.
The average humidity is 85%. Hence, the air is normally humid.
The average wind speed is of
3.6 kph.
December, the hottest month of the year, is generally a warm to hot, muggy month. The average temperature is of
27.3 °C, with a minimum of
23.2 °C and a maximum of
31.4 °C.

On the coldest nights of the month, the temperature usually drops to around
21.5 °C.

On the warmest days of the month, the temperature usually reaches around
34 °C.

Precipitation amounts to
290 mm, distributed over 23 days.
The day lasts on average 12 hours and 25 minutes.

There are on average 4.5 hours of sunshine per day. So, the sun shines 37% of the time.
The average humidity is 87%. Hence, the air is normally humid.
The average wind speed is of
3.4 kph.