Guayaquil weather in September
In September, Guayaquil has an average high of 36 °C97 °F and an average low of 20 °C68 °F, with about 2 mm0.1 in of precipitation. It is the 4th warmest month of the year and the driest.
How September compares with other months
Compared with August, September is about the same temperature. Compared with October, September is about the same temperature. Daylight lasts about 12.1 hours around the middle of the month. Average relative humidity is 57% and the average cloud amount 71%.
Is September a good time to visit Guayaquil?
September is not among the most comfortable months by our comfort score: it is hot (average high 36 °C97 °F). The most comfortable months in Guayaquil are May.
What to wear in September
For Guayaquil in September, pack very light, breathable clothing, a sun hat and plenty of water.
September in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Guayaquil | 3697 | 2068 | 20.1 |
| Milagro | 3798 | 2272 | 160.6 |
| Daule | 3696 | 2068 | 20.1 |
| Machala | 3392 | 2271 | 80.3 |
| Cuenca | 1864 | 846 | 491.9 |
| Quevedo | 3595 | 2373 | 190.8 |
| Portoviejo | 2882 | 2068 | 20.1 |
| Riobamba | 1864 | 744 | 662.6 |
| Manta | 2983 | 2169 | 20.1 |
Nearby places that are more than 1 °C1.8 °F warmer in September: Milagro; cooler: Cuenca, Portoviejo, Riobamba and Manta.
Other months in Guayaquil
- January34 °C92 °F / 22 °C72 °F
- February32 °C89 °F / 23 °C73 °F
- March31 °C88 °F / 23 °C73 °F
- April32 °C90 °F / 22 °C72 °F
- May33 °C92 °F / 22 °C71 °F
- June35 °C94 °F / 21 °C70 °F
- July35 °C96 °F / 20 °C69 °F
- August36 °C97 °F / 20 °C68 °F
- September36 °C97 °F / 20 °C68 °F
- October35 °C95 °F / 20 °C68 °F
- November35 °C94 °F / 20 °C69 °F
- December35 °C95 °F / 22 °C71 °F
Frequently asked questions
How warm is Guayaquil in September?
In September the average high in Guayaquil is 36 °C (97 °F) and the average low is 20 °C (68 °F).
Does it rain a lot in Guayaquil in September?
On average about 2 mm (0.1 in) of precipitation falls in September; it ranks 12th of the 12 months.
Is September the warmest month in Guayaquil?
No. The warmest month in Guayaquil is August, with an average high of 36 °C (97 °F). The coldest month is August, with an average low of 20 °C (68 °F).
How long is the day in Guayaquil in September?
In the middle of September the day in Guayaquil 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 Guayaquil in September?
The average relative humidity in September is about 57%. This is a long-term average for the whole day.
How cloudy is Guayaquil in September?
On average about 71% 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 65 m, while Guayaquil lies at about 14 m. Temperatures on this page were therefore adjusted by +0.3 °C0.6 °F using the standard lapse rate of 6.5 °C per 1,000 m.