Climate averages 1991–2020
Portoviejo weather
by month.
See how the year changes. November has the highest average daily maximum; August has the lowest average monthly rainfall.
Pleasant-weather months by our simple rule: JuneJulyAugustSeptemberOctober
Long-term climate patterns, not a forecast for a particular trip.
Across the year Portoviejo averages a daytime high of 28.8°C and a nighttime low of 22.2°C, with about 1,044 mm of rain on roughly 141 days. November is the warmest month (average high 29.5°C) and July (tied with June) the coolest (28.0°C). February is the wettest month with 256 mm; August is the driest with 14 mm.
Months with pleasant weather by a simple rule (average high between 18°C and 29°C, average low of at least 5°C and at most 8 rain days): June, July, August, September and October. This looks at temperature and rain only, not humidity, wind, sea temperature or crowds.
The annual picture
A year in Portoviejo
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Portoviejo climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.7°C22.8°C | 22.8°C | 132 | 18.2 | 12.212 h |
| February | 28.5°C23.0°C | 23.0°C | 256 | 22.9 | 12.112 h |
| March | 29.0°C23.1°C | 23.1°C | 234 | 23.1 | 12.112 h |
| April | 29.0°C23.0°C | 23.0°C | 158 | 20.3 | 12.112 h |
| May | 28.6°C22.8°C | 22.8°C | 75 | 14.2 | 12.112 h |
| June | 28.0°C22.1°C | 22.1°C | 32 | 7.9 | 12.112 h |
| July | 28.0°C21.6°C | 21.6°C | 22 | 5.9 | 12.112 h |
| August | 28.6°C21.3°C | 21.3°C | 14 | 4.0 | 12.112 h |
| September | 28.9°C21.3°C | 21.3°C | 20 | 5.1 | 12.112 h |
| October | 29.0°C21.4°C | 21.4°C | 18 | 4.5 | 12.112 h |
| November | 29.5°C21.5°C | 21.5°C | 22 | 4.3 | 12.212 h |
| December | 29.4°C22.3°C | 22.3°C | 61 | 10.1 | 12.212 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
Nearby cities
- La LibertadEcuador · 140 kmHigh 25.4°C · Low 21.8°C · 420 mm rain a year
- Eloy AlfaroEcuador · 141 kmHigh 28.0°C · Low 22.2°C · 2,699 mm rain a year
- Santo Domingo de los ColoradosEcuador · 168 kmHigh 24.2°C · Low 19.5°C · 2,680 mm rain a year
- EsmeraldasEcuador · 241 kmHigh 27.8°C · Low 23.3°C · 1,684 mm rain a year
- CuencaEcuador · 261 kmHigh 17.7°C · Low 10.8°C · 1,499 mm rain a year
- TumbesPeru · 278 kmHigh 29.6°C · Low 22.0°C · 614 mm rain a year
- IbarraEcuador · 302 kmHigh 20.3°C · Low 11.2°C · 1,690 mm rain a year
- LojaEcuador · 355 kmHigh 21.0°C · Low 14.2°C · 1,310 mm rain a year
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsWhat do the high and low temperatures mean?
We average the daily maximum and daily minimum for each calendar month over 1991–2020. They are not record extremes, a forecast range or temperatures at a fixed time of day.
How is a rain day counted?
A local calendar day (standard time, UTC-5, no daylight saving) with at least 1 mm of total precipitation counts as one rain day. We count these for each year and month, then average across 30 years. The average does not predict which days will be wet.
Where do the numbers come from?
ERA5-Land (temperature) and ERA5 (precipitation) reanalysis from the Copernicus Climate Change Service, read from the Open-Meteo open-data archive. Temperature comes from the 0.1° model cell at -1.10°, -80.50° (7 km from the city centre), adjusted up by 0.6°C for the difference between the city's elevation (90 m) and the cell's (182 m). Rain comes from the 0.25° cell at -1.00°, -80.50°. These are model estimates, not weather-station readings; coast, hills and city streets can differ.
Does this page show sunshine, humidity or sea temperature?
No. The data used here contain air temperature and precipitation only. Daylight hours are calculated from the city's latitude (sunrise to sunset), not measured sunshine.