Quito weather in September
In September, Quito has an average high of 17 °C63 °F and an average low of 5 °C41 °F, with about 38 mm1.5 in of precipitation. September is the warmest month of the year and ranks 10th for precipitation.
How September compares with other months
Compared with August, September is about the same temperature and wetter by 13 mm0.5 in. Compared with October, September is about the same temperature and drier by 38 mm1.5 in. Daylight lasts about 12.1 hours around the middle of the month. Average relative humidity is 75% and the average cloud amount 72%.
Is September a good time to visit Quito?
Yes — September is one of the most comfortable months to visit Quito by our comfort score, which favours average highs of 21–28 °C, lows above 5 °C, little rain and moderate humidity.
What to wear in September
For Quito in September, pack long sleeves, a sweater and a medium jacket and an extra layer for the cooler mornings and evenings.
September in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Quito | 1763 | 541 | 381.5 |
| Santo Domingo de los Colorados | 3187 | 1966 | 271.1 |
| Ibarra | 2272 | 1050 | 391.6 |
| Latacunga | 1865 | 744 | 522.0 |
| Ambato | 1967 | 846 | 522.0 |
| Quevedo | 3595 | 2373 | 190.8 |
| Riobamba | 1864 | 744 | 662.6 |
| Esmeraldas | 3087 | 2373 | 301.2 |
| Pasto | 1864 | 847 | 481.9 |
Nearby places that are more than 1 °C1.8 °F warmer in September: Santo Domingo de los Colorados, Ibarra, Latacunga and Ambato.
Other months in Quito
- January15 °C59 °F / 6 °C44 °F
- February15 °C59 °F / 7 °C44 °F
- March15 °C59 °F / 7 °C45 °F
- April15 °C60 °F / 7 °C45 °F
- May16 °C61 °F / 7 °C44 °F
- June17 °C62 °F / 5 °C42 °F
- July17 °C63 °F / 5 °C41 °F
- August18 °C64 °F / 5 °C41 °F
- September17 °C63 °F / 5 °C41 °F
- October16 °C61 °F / 6 °C43 °F
- November15 °C60 °F / 6 °C43 °F
- December15 °C59 °F / 6 °C43 °F
Frequently asked questions
How warm is Quito in September?
In September the average high in Quito is 17 °C (63 °F) and the average low is 5 °C (41 °F).
Does it rain a lot in Quito in September?
On average about 38 mm (1.5 in) of precipitation falls in September; it ranks 10th of the 12 months.
Is September the warmest month in Quito?
No. The warmest month in Quito is August, with an average high of 18 °C (64 °F). The coldest month is August, with an average low of 5 °C (41 °F).
How long is the day in Quito in September?
In the middle of September the day in Quito lasts about 12.1 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Quito in September?
The average relative humidity in September is about 75%. This is a long-term average for the whole day.
How cloudy is Quito in September?
On average about 72% of the sky is covered by cloud in September. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 1,863 m, while Quito lies at about 2,854 m. Temperatures on this page were therefore adjusted by −6.4 °C11.6 °F using the standard lapse rate of 6.5 °C per 1,000 m.