Manaus in September
In September, Manaus averages 33°C (91°F) during the day and 25°C (78°F) at night, with frequent rain — about 22 days of the month see precipitation (64 mm total).
ShoulderConditions are very hot — early-morning and evening sightseeing recommended. Expect daily rain or showers, often in heavy bursts.
September is one of the wetter and less comfortable months in Manaus. If your dates are flexible, consider a different time of year.
How September compares to the rest of the year in Manaus
September is one of the warmest months in Manaus (1st of 12) and one of the driest months (11th of 12). Daytime temperature runs 2°C above the annual average (30°C). September runs 1°C warmer than August (32°C) and cools 1°C in October (32°C).
September sunrise & sunset in Manaus
Times shown for Manaus local time (America/Manaus), calculated for the 15th of September. They shift by a few minutes day to day across the month.
Photography light in Manaus — September
Golden-hour and blue-hour windows for the 15th of September, in Manaus's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Manaus in September
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on September's tier (Shoulder) and Manaus's popularity.
Crowds & pricing — September in Manaus
Manaus is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Sun & mosquito risk — September in Manaus
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Manaus in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 29°C / 85°F | 24°C / 76°F | 253 mm | 30 | — |
| February | 29°C / 84°F | 24°C / 76°F | 245 mm | 28 | — |
| March | 29°C / 85°F | 24°C / 76°F | 312 mm | 31 | — |
| April | 29°C / 84°F | 24°C / 76°F | 271 mm | 30 | — |
| May | 29°C / 85°F | 24°C / 76°F | 216 mm | 31 | — |
| June | 29°C / 85°F | 24°C / 75°F | 123 mm | 27 | — |
| July | 31°C / 87°F | 24°C / 76°F | 55 mm | 24 | — |
| August | 32°C / 90°F | 25°C / 77°F | 49 mm | 20 | — |
| September | 33°C / 91°F | 25°C / 78°F | 64 mm | 22 | — |
| October | 32°C / 90°F | 26°C / 78°F | 102 mm | 24 | — |
| November | 31°C / 88°F | 25°C / 78°F | 143 mm | 27 | — |
| December | 30°C / 85°F | 25°C / 76°F | 258 mm | 28 | — |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Manaus in September →
Frequently asked questions
How hot is Manaus in September?
In September, Manaus averages a high of 33°C (91°F) and a low of 25°C (78°F) — generally hot.
Does it rain a lot in Manaus in September?
September is quite rainy in Manaus, with about 22 rainy days on average.
Is September a good time to visit Manaus?
September is hot but on the rainy side. It suits travelers who are comfortable with hot weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Manaus in September?
Pack lightweight, breathable clothing, sunglasses and sunscreen, plus a compact umbrella or rain jacket. See the full September packing list for Manaus for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.