Portoviejo climate
Portoviejo (Ecuador) has a hot semi-arid climate (Köppen BSh). The average temperature over the year is 25 °C77 °F, and about 575 mm23 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Portoviejo climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2983 | 2272 | 2578 | 1044.1 |
| Feb | 2883 | 2374 | 2678 | 1606.3 |
| Mar | 2883 | 2374 | 2678 | 1526.0 |
| Apr | 2983 | 2373 | 2678 | 823.2 |
| May | 2883 | 2272 | 2577 | 311.2 |
| Jun | 2882 | 2170 | 2576 | 100.4 |
| Jul | 2882 | 2169 | 2476 | 30.1 |
| Aug | 2883 | 2068 | 2475 | 20.1 |
| Sep | 2882 | 2068 | 2475 | 20.1 |
| Oct | 2882 | 2069 | 2476 | 40.1 |
| Nov | 2883 | 2169 | 2476 | 40.2 |
| Dec | 2983 | 2171 | 2577 | 200.8 |
| Year | 2983 | 2068 | 2577 | 57523 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 79% | 85% | 4.0 | 12:10 |
| Feb | 82% | 86% | 4.2 | 12:09 |
| Mar | 83% | 82% | 4.7 | 12:07 |
| Apr | 82% | 73% | 4.7 | 12:05 |
| May | 80% | 75% | 4.1 | 12:04 |
| Jun | 78% | 81% | 3.4 | 12:04 |
| Jul | 76% | 83% | 3.3 | 12:04 |
| Aug | 75% | 78% | 3.7 | 12:05 |
| Sep | 75% | 77% | 4.0 | 12:06 |
| Oct | 74% | 82% | 3.9 | 12:08 |
| Nov | 74% | 79% | 4.0 | 12:10 |
| Dec | 75% | 79% | 4.0 | 12:11 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Portoviejo is like
The warmest month is February, with an average high of 28 °C83 °F and a low of 23 °C74 °F. The coldest is September, when highs average 28 °C82 °F and lows 20 °C68 °F. Temperatures barely change through the year: the warmest and the coolest month differ by only 1.7 °C3.1 °F.
Annual precipitation is moderate at about 575 mm23 in. The wettest three-month stretch is January–March, which brings 72% of the annual total. Months with less than 20 mm0.8 in on average: June–November. The wettest month is February (160 mm6.3 in), the driest is September (2 mm0.1 in).
Relative humidity ranges from 74% in November to 83% in March. The clearest skies (lowest average cloud amount, 73%) are typical of April. Average wind speed near the ground ranges from 8 km/h (5 mph) in March to 14 km/h (9 mph) in October.
Best time to visit Portoviejo
Based on these averages, the most comfortable months for sightseeing and outdoor activities are May–December: average highs of 28 °C82 °F to 29 °C83 °F with 2 mm0.1 in to 31 mm1.2 in of precipitation per month.
The most challenging month is February, which is very wet (160 mm6.3 in) and humid (82% relative humidity).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Portoviejo
- Wetter months (January–April) — highs 2883 to 29 °C83 °F, lows 2272 to 23 °C74 °F, about 125 mm4.9 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
- Drier months (May–December) — highs 2882 to 29 °C83 °F, lows 2068 to 22 °C72 °F, about 10 mm0.4 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses.
How Portoviejo compares
Compared with Guayaquil, about 141 km to the southeast, Portoviejo is on average 2.8 °C5 °F cooler and receives 25% less precipitation (575 mm23 in vs 771 mm30 in). The difference is largest in September (3.9 °C7.1 °F cooler).
Of the 16 places in Ecuador covered by World Climates, Portoviejo is the 8th warmest by annual mean temperature and the 14th wettest by annual precipitation. See all of them on the Ecuador climate page.
Places in other countries with the most similar temperature and rainfall pattern (seasons shifted for the other hemisphere where needed): Mbour (Senegal, BSh), Serekunda (Gambia, Aw) and Dakar (Senegal, BSh).
Nearby places
- Manta 33 km · 25 °C78 °F · 575 mm23 in
- Daule 104 km · 28 °C82 °F · 771 mm30 in
- Quevedo 110 km · 28 °C82 °F · 1,257 mm50 in
- Guayaquil 141 km · 28 °C82 °F · 771 mm30 in
- Milagro 153 km · 29 °C83 °F · 912 mm36 in
- Santo Domingo de los Colorados 168 km · 24 °C75 °F · 1,465 mm58 in
- Latacunga 205 km · 13 °C55 °F · 1,253 mm49 in
- Ambato 205 km · 14 °C57 °F · 1,253 mm49 in
Frequently asked questions
What is the warmest month in Portoviejo?
February is the warmest month in Portoviejo, with an average high of 28 °C (83 °F) and an average low of 23 °C (74 °F).
What is the coldest month in Portoviejo?
September is the coldest month, with an average high of 28 °C (82 °F) and an average low of 20 °C (68 °F).
When does it rain the most in Portoviejo?
February is the wettest month with about 160 mm (6.3 in) of precipitation; September is the driest with about 2 mm (0.1 in).
What is the best time to visit Portoviejo?
Judging by long-term averages, the most comfortable months are May–December.
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.