Weather and climate in Santarém (Pará)

The climate of Santarém is tropical, with a rainy season from December to June and a dry season from August to November. This last period is also, albeit slightly, the hottest of the year. The dry season is neither very long nor very pronounced, so tropical forest grows in the area.
The city is located in Brazil, in the state of Pará, just south of the equator, where the Tapajós River flows into the Amazon River. Both rivers have a considerable width, of several kilometers.

Best Time

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The best time to visit Santarém is from August to November, being the dry season. It must be said that this is the hottest time of the year, although the humidity is slightly lower.

Santarém - Climate data

The average temperature of the coldest month (April) is of 27.2 °C (80.9 °F), that of the warmest month (October) is of 29.2 °C (84.6 °F). Here are the average temperatures.
Precipitation amounts to 2120 millimeters (83.5 inches) per year: it is therefore abundant. It ranges from 55 mm (2.2 in) in the driest month (October) to 385 mm (15.2 in) in the wettest one (March). Here is the average precipitation.
There are on average around 2035 sunshine hours per year. Here are the average hours of sunshine per day.

Santarém - Weather by month

Based on the period 1991-2020

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January is generally a very hot, muggy month. The average temperature is of 27.7 °C (82 °F), with a minimum of 24.3 °C (75.8 °F) and a maximum of 31 °C (87.8 °F).
On the coldest nights of the month, the temperature usually drops to around 22 °C (72 °F).
On the warmest days of the month, the temperature usually reaches around 33 °C (92 °F).
Precipitation amounts to 195 mm (7.7 in), distributed over 16 days.
The day lasts on average 12 hours and 10 minutes.
There are on average 4.5 hours of sunshine per day. So, the sun shines 38% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is 11 kph (7 mph).

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February is generally a warm to hot, muggy month. The average temperature is of 27.3 °C (81 °F), with a minimum of 24.1 °C (75.4 °F) and a maximum of 30.4 °C (86.7 °F).
On the coldest nights of the month, the temperature usually drops to around 22.5 °C (72 °F).
On the warmest days of the month, the temperature usually reaches around 32.5 °C (90.5 °F).
Precipitation amounts to 275 mm (10.8 in), distributed over 18 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 32% of the time.
The average humidity is 82%. Hence, the air is normally humid.
The average wind speed is 11 kph (7 mph).

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March is generally a warm to hot, muggy month. The average temperature is of 27.2 °C (81 °F), with a minimum of 24.1 °C (75.3 °F) and a maximum of 30.3 °C (86.6 °F).
On the coldest nights, the temperature usually drops to around 22 °C (72 °F).
On the warmest days, the temperature usually reaches around 32 °C (90 °F).
Precipitation amounts to 385 mm (15.2 in), distributed over 22 days.
The day lasts on average 12 hours and 5 minutes.
There are on average 3.5 hours of sunshine per day. So, the sun shines 30% of the time.
The average humidity is 83%. Hence, the air is normally humid.
The average wind speed is 10 kph (6 mph).

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April, the least warm month of the year, is generally a warm to hot, muggy month. The average temperature is of 27.2 °C (81 °F), with a minimum of 24.1 °C (75.3 °F) and a maximum of 30.3 °C (86.5 °F).
On the coldest nights, the temperature usually drops to around 22.5 °C (72.5 °F).
On the warmest days, the temperature usually reaches around 32 °C (89 °F).
Precipitation amounts to 345 mm (13.6 in), distributed over 21 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 84%. Hence, the air is normally humid.
The average wind speed is 10 kph (6 mph).

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May is generally a warm to hot, muggy month. The average temperature is of 27.2 °C (81 °F), with a minimum of 24 °C (75.3 °F) and a maximum of 30.4 °C (86.8 °F).
On the coldest nights, the temperature usually drops to around 22.5 °C (72.5 °F).
On the warmest days, the temperature usually reaches around 32 °C (89.5 °F).
Precipitation amounts to 275 mm (10.8 in), 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 38% of the time.
The average humidity is 84%. Hence, the air is normally humid.
The average wind speed is 9 kph (6 mph).

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June is generally a warm to hot, muggy month. The average temperature is of 27.2 °C (81 °F), with a minimum of 23.6 °C (74.6 °F) and a maximum of 30.7 °C (87.3 °F).
On the coldest nights, the temperature usually drops to around 22 °C (72 °F).
On the warmest days, the temperature usually reaches around 32 °C (90 °F).
Precipitation amounts to 150 mm (5.9 in), distributed over 16 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 5.5 hours of sunshine per day. So, the sun shines 46% of the time.
The average humidity is 82%. Hence, the air is normally humid.
The average wind speed is 9 kph (6 mph).

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July is generally a warm to hot, muggy month. The average temperature is of 27.2 °C (81 °F), with a minimum of 23.4 °C (74.2 °F) and a maximum of 31 °C (87.9 °F).
On the coldest nights of the month, the temperature usually drops to around 21.5 °C (71 °F).
On the warmest days of the month, the temperature usually reaches around 32.5 °C (90.5 °F).
Precipitation amounts to 130 mm (5.1 in), distributed over 12 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 55% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is 9 kph (6 mph).

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August is generally a very hot, muggy month. The average temperature is of 28.0 °C (82 °F), with a minimum of 24 °C (75.2 °F) and a maximum of 32 °C (89.7 °F).
On the coldest nights of the month, the temperature usually drops to around 22 °C (71.5 °F).
On the warmest days of the month, the temperature usually reaches around 33.5 °C (92.5 °F).
Precipitation amounts to 65 mm (2.6 in), distributed over 8 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 7.5 hours of sunshine per day. So, the sun shines 63% of the time.
The average humidity is 76%. Hence, the air is normally humid.
The average wind speed is 11 kph (7 mph).

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September is generally a very hot, muggy month. The average temperature is of 28.9 °C (84 °F), with a minimum of 24.9 °C (76.8 °F) and a maximum of 32.9 °C (91.2 °F).
On the coldest nights, the temperature usually drops to around 22.5 °C (72 °F).
On the warmest days, the temperature usually reaches around 34.5 °C (94.5 °F).
Precipitation amounts to 60 mm (2.4 in), distributed over 7 days.
The day lasts on average 12 hours and 5 minutes.
There are on average 7.5 hours of sunshine per day. So, the sun shines 60% of the time.
The average humidity is 72%. Hence, the air is normally humid.
The average wind speed is 13 kph (8 mph).

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October, the hottest month of the year, is generally a very hot, muggy month. The average temperature is of 29.2 °C (85 °F), with a minimum of 25.2 °C (77.3 °F) and a maximum of 33.2 °C (91.8 °F).
On the coldest nights, the temperature usually drops to around 23 °C (73 °F).
On the warmest days, the temperature usually reaches around 35 °C (94.5 °F).
Precipitation amounts to 55 mm (2.2 in), distributed over 5 days.
The day lasts on average 12 hours and 10 minutes.
There are on average 7 hours of sunshine per day. So, the sun shines 59% of the time.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is 13 kph (8 mph).

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November is generally a very hot, muggy month. The average temperature is of 28.8 °C (84 °F), with a minimum of 24.9 °C (76.7 °F) and a maximum of 32.8 °C (91.1 °F).
On the coldest nights, the temperature usually drops to around 22.5 °C (72.5 °F).
On the warmest days, the temperature usually reaches around 34.5 °C (94.5 °F).
Precipitation amounts to 70 mm (2.8 in), distributed over 5 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 73%. Hence, the air is normally humid.
The average wind speed is 12 kph (8 mph).

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December is generally a very hot, muggy month. The average temperature is of 28.6 °C (83 °F), with a minimum of 24.9 °C (76.9 °F) and a maximum of 32.2 °C (90 °F).
On the coldest nights of the month, the temperature usually drops to around 22.5 °C (73 °F).
On the warmest days of the month, the temperature usually reaches around 34 °C (93 °F).
Precipitation amounts to 120 mm (4.7 in), distributed over 10 days.
The day lasts on average 12 hours and 20 minutes.
There are on average 5.5 hours of sunshine per day. So, the sun shines 43% of the time.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is 12 kph (8 mph).