Guayaquil is warmest in September, averaging 38° by day and 22° at night. The wettest month is February with 196 mm, and the year brings about 863 mm in total.
Month by month
| Month | High | Low | Rain | Sea | Daylight | Good for |
|---|---|---|---|---|---|---|
| January | 34° | 23° | 158 mm | 27° | 12.1 h | Mild |
| February | 33° | 23° | 196 mm | 27° | 12.1 h | Rainy season |
| March | 31° | 23° | 202 mm | 28° | 12.0 h | Rainy season |
| April | 33° | 23° | 132 mm | 27° | 12.0 h | Mild |
| May | 35° | 23° | 37 mm | 27° | 11.9 h | Beach weather |
| June | 35° | 22° | 42 mm | 26° | 11.9 h | Beach weather |
| July | 36° | 22° | 16 mm | 25° | 11.9 h | Very hot |
| August | 37° | 21° | 3 mm | 25° | 11.9 h | Very hot |
| September | 38° | 22° | 6 mm | 25° | 12.0 h | Very hot |
| October | 37° | 22° | 9 mm | 25° | 12.0 h | Very hot |
| November | 36° | 22° | 9 mm | 25° | 12.1 h | Beach weather |
| December | 35° | 23° | 53 mm | 25° | 12.1 h | Beach weather |
High and low are average daily maximum and minimum, rain is typical monthly total, sea is the average surface temperature, daylight is the hours between sunrise and sunset mid-month. Climate normals from NASA POWER and NOAA MUR — averages, not promises.
When to go
Beach weather: May, June, November and December — highs around 35°, nights no colder than 22°, and at most 53 mm of rain in a month. The sea sits at 25–27° then.
Wet season: February and March — up to 202 mm in a single month.
Serious heat: In July, August, September and October the average high reaches 38°.