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Guayaquil, Ecuador climate
Aw Tropical savanna (dry winter)
Guayaquil has a remarkably steady tropical climate (Tropical savanna (dry winter), Köppen Aw). The hottest month is April with an average daily high near 31°C, while the coldest is August averaging around 21°C at night. Precipitation totals about 1372 mm a year and is strongly seasonal — February alone averages 297 mm while September barely receives 45 mm.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Guayaquil climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 31 | 31 | 31 | 31 | 30 | 29 | 29 | 30 | 30 | 30 | 31 |
| Avg temp (°C) | 27 | 27 | 28 | 28 | 27 | 26 | 25 | 25 | 25 | 26 | 26 | 27 |
| Avg low (°C) | 24 | 24 | 24 | 24 | 23 | 22 | 21 | 21 | 21 | 21 | 22 | 23 |
| Precipitation (mm) | 188 | 297 | 243 | 148 | 59 | 46 | 76 | 86 | 45 | 50 | 59 | 77 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 31 | 31 | 31 | 31 | 30 |
| Avg temp (°C) | 27 | 27 | 28 | 28 | 27 | 26 |
| Avg low (°C) | 24 | 24 | 24 | 24 | 23 | 22 |
| Precipitation (mm) | 188 | 297 | 243 | 148 | 59 | 46 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 29 | 29 | 30 | 30 | 30 | 31 |
| Avg temp (°C) | 25 | 25 | 25 | 26 | 26 | 27 |
| Avg low (°C) | 21 | 21 | 21 | 21 | 22 | 23 |
| Precipitation (mm) | 76 | 86 | 45 | 50 | 59 | 77 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 82 | 85 | 86 | 79 | 76 | 70 | 69 | 67 | 71 | 78 | 78 | 79 |
| Relative humidity (%) | 69 | 79 | 81 | 78 | 73 | 66 | 61 | 58 | 58 | 59 | 60 | 62 |
| Wind speed (mph) | 5.8 | 4.6 | 4.1 | 4.3 | 4.9 | 5.6 | 6.3 | 6.9 | 7.3 | 7.5 | 7.4 | 7.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 82 | 85 | 86 | 79 | 76 | 70 |
| Relative humidity (%) | 69 | 79 | 81 | 78 | 73 | 66 |
| Wind speed (mph) | 5.8 | 4.6 | 4.1 | 4.3 | 4.9 | 5.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 69 | 67 | 71 | 78 | 78 | 79 |
| Relative humidity (%) | 61 | 58 | 58 | 59 | 60 | 62 |
| Wind speed (mph) | 6.3 | 6.9 | 7.3 | 7.5 | 7.4 | 7.0 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 29 years of daily observations at Simon Bolivar Intl / Jose Joaquin DE Olmedo Intl, a weather station, about 4 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.