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Manaus in September: Weather, Average temperature and Climate

Discover the weather for Manaus in September and if it’s a good time to travel (based on historical data).
Check flight prices to Manaus on Avionero:
September

Weather in Manaus in September 2024

OK Weather
Hot
🌧️
Rainy
If you plan to visit Manaus in September, the weather is typically alright, with an average high temperature of +32°C during the day and approximately 3 sunny days. Expect some rainy, though, as there are typically 19 rainy days in the month and around 124 mm of precipitation. The weather is changeable so you may have to pack for every eventuality. Search flights in one click on Avionero.

Average weather

☀️
+32°C
Avg. max. temperature
+21°C
Min.
+38°C
Max.
124 mm
Total precipitation
81%
Avg. humidity
1 m/s
Avg. wind
3 ☀️
Sunny Days
1 ⛅️
Cloudy
19 🌦
Rainy
Our opinion: Manaus has OK weather in September.

Average temperature in Manaus in September

Here are the expected maximum, average and minimum temperatures in Manaus for September based on the historical data.
Last Year
Historical Data

Going from a maximum of +37°C during the day to a minimum of +24°C during the night, the temperature in September averages around +35°C.

The average maximum temperature goes up 0% by the end of the month, compared with the beginning of the month, from +36°C to +36°C.

Is Manaus warm or cold in September?

Manaus is typically hot in September.

Maximum temperatures go up compared to the previous month from +32°C to +32°C. The minimum temperature also goes up from +24°C to +25°C.

Make sure that you pack your summer linen and swimming costumes; it’s probably going to be hot.

September is one of the warmest months in Manaus, here is the comparison with other months:

Climate in Manaus in September

Manaus weather looks like this, on average, in September and the surrounding months.
AugustSeptemberOctober
Avg. temperature
+32°C+32°C+32°C
Min. temperature
+21°C+21°C+21°C
Max. temperature
+36°C+38°C+38°C
Rainfall
100 mm124 mm153 mm
Wind
1 m/s1 m/s1 m/s
Humidity
81%81%82%
Air pressure
1011 HPa1010 HPa1009 HPa
Sunny days
432
Cloudy days
112
Rainy days
201920
Snowy days
000

September weather is still as ok as in August. The temperature levels stay the same in the area of +32°C for average maximum temperature during the day. Prepare for more rain. Average rainfall goes from 100 mm to 124 mm. Humidity levels don’t change as the month goes on, averaging around 81%. The average wind speed doesn’t change much during September, staying around 1 m/s. The days becoming less sunny, going from 4 sunny days in August to 3 in September.

October brings much the same weather, it remains ok.

Wind

Wind speed in Manaus in September based on historical data.
Last Year
Historical Data

The average wind speed is 2 m/s getting up to 3 m/s which is a light breeze; barely moving the tree leaves.

The average wind speed in Manaus is gradually increasing during September, going from 1 m/s to 2 m/s over the course of the month.

Rain

Amount of rainfall in mm during September in Manaus based on historical data.
Last Year
Historical Data
A chance of rain on a typical day in September stands at 20%, leading to total precipitation of around 36 mm. The maximum amount of rainfall per day is around 12 mm, which is considered light rain. On average, there are about 6 rainy days during September, so prepare to bring an umbrella.
Here’s how September is compared with other months in the amount of precipitation, total mm:
Manaus wettest month is March, where a typical day has a 77% chance of precipitation and 350 mm of rainfall per day. August, on the other hand, is the driest month with a mere 65% chance of precipitation and 100 mm of rainfall per day.

How was the weather last September in Manaus?

This is the weather in Manaus in September 2023:
1 September
☀️
+36°C
2 September
☀️
+36°C
3 September
☀️
+36°C
4 September
☀️
+37°C
5 September
☀️
+37°C
6 September
☀️
+36°C
7 September
☀️
+33°C
8 September
☁️
+35°C
9 September
☀️
+37°C
10 September
☀️
+37°C
11 September
☀️
+31°C
12 September
🌧️
+34°C
13 September
☀️
+35°C
14 September
☀️
+36°C
15 September
☀️
+36°C
16 September
☀️
+30°C
17 September
☀️
+32°C
18 September
☀️
+35°C
19 September
☀️
+36°C
20 September
☁️
+31°C
21 September
☀️
+33°C
22 September
☀️
+33°C
23 September
☀️
+33°C
24 September
☀️
+34°C
25 September
☀️
+35°C
26 September
☀️
+36°C
27 September
☀️
+37°C
28 September
☀️
+34°C
29 September
☀️
+35°C
30 September
☀️
+36°C
In September 2023 Manaus had 27 sunny days, 2 cloudy days, and 1 rainy days. The average maximum temperature was +35°C, with an absolute maximum of +37°C and a minimum of +30°C. The average humidity was 69%, with a maximum of 100% and a minimum of 34%. The average wind speed was 2 m/s, with a maximum of 21 m/s and a minimum of 0 m/s.
Are you planning a trip in September?

Climate Change over Years

This is how Manaus climate have been changing during last 43 years period.

The climate in Manaus in September has not changed much over the last 43 years.

The average temperature was the lowest in 1989 (+29°C) and the highest in 2020 (+32°C). The driest year was 1980 with only 2148 mm of rainfall, and the wettest year was 2008 with 3331 mm.

FAQ

Frequently asked questions about the weather in Manaus in September:

Is September a good time to visit Manaus?

It’s always a good time to visit Manaus, but the weather is changeable in September, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.

Can you sunbathe in Manaus in September?

Absolutely, September is hot in Manaus. Plan on beach and pool time, and ensure that you pack light and breathable options to stay comfortable.

Is Manaus rainy in September?

Manaus is often rainy in September. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in Manaus in September?

Usually, it’s not very sunny in Manaus in September, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Other cities in Brazil

Check out the weather for other cities in Brazil.

Monthly weather in Manaus

Source of the data

For this page, we’ve looked at the typical weather in Manaus, based on historical hourly weather data from January 1, 1979, to December 31, 2022.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.