Climate and monthly weather forecastPortoviejo, Ecuador

The climate of Portoviejo

Located in the South American country of Ecuador, Portoviejo experiences a tropical wet and dry climate, also referred to as savanna, as per the Köppen climate classification (Aw). This classification wholly depends upon a sharp contrast witnessed between the wet and dry seasons.
Throughout the year, Portoviejo undergoes subtle but significant variations in weather parameters such as temperature, humidity, and rainfall. Monthly average high temperatures tend to hover around 28.4°C (83.1°F) and 29.8°C (85.6°F), while lows float between 19.6°C (67.3°F) and 22.4°C (72.3°F). This consolidated data indicates quite a consistent and scorched climatic condition, with the highest mean temperatures occurring around April and May at 29.8°C (85.6°F).
Relative humidity percentages remain fairly high throughout the twelve months, reflecting the tropical climate. These percentages range from 69% to 84%, with February marked as the most humid month. Rainfall demonstrates a more distinct yearly pattern, with totals dropping to a minimal 6mm (0.24") in July and August and peaking typically at 132mm (5.2") in January.
The changing pattern of rain is accompanied by a similar pattern in rainfall days, i.e., from a minimum of 4.9 days in August to a maximum of 26.5 days in February. One may witness a clear transformation between a wetter, overcast period of the year and the drier, sunnier months, dictated by the tropical savanna climate.

The best time to visit Portoviejo

With such a diverse weather pattern, the choice for the best time to visit Portoviejo often boils down to the visitor's preferences. However, considering the favorable weather conditions, such as lower rainfall and more sunshine hours, it is recommended to plan a trip between June and October. During these months, measurable rainfall is rare, averaging at most 12mm (0.47") in October and as low as 6mm (0.24") from July to September. Furthermore, the sunshine hours range from 6 to 6.6, promising pleasant and sunny days.

The worst time to visit Portoviejo

In contrast, the worst time for tourists typically coincides with the wettest months of the year. This period from January to March sees heavier rainfall from 102mm (4.02") to 132mm (5.2") and higher humidity levels reaching up to 84%. The increased precipitation levels and high humidity during these months might prove to be uncomfortable for many visitors.

Spring weather in Portoviejo

Spring in Portoviejo brings a transition from wetter to drier conditions. During this season, which includes March, April, and May, average high temperatures range from 29.5°C (85.1°F) to 29.8°C (85.6°F), making it the hottest season climatically. Rainfall occurs frequently in March but drastically decreases in April and May of precipitation. In Portoviejo, the average length of the day in January is 12h and 10min.
On the first day of the month, sunrise is at 06:19 and sunset at 18:30. On the last day of January, sunrise is at 06:30 and sunset at 18:40 -05. The month with the least sunshine is January, with an average of 4.5h of sunshine. The months with the highest UV index are January through December, with an average maximum UV index of 6. The months with the lowest UV index are January through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily high UV index of 6 in January translates into this advice:
Fend off overexposure. Sun protection is vital. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.

Weather in February

Shifting into February, the climate in Portoviejo still maintains its humid and warm nature. There is a slight reduction in the lower temperatures when compared to January, with the mercury dropping to 22.1°C (71.8°F). A notable increase in relative humidity translates into a cozier and warm atmosphere that is accompanied by slightly less precipitation. Weather in February »

Weather in March

March ushers in a slightly drier phase in Portoviejo, with rainfall reducing from the previous two months. Sustaining the warm trend, the recorded temperatures for the month range from 21.6°C (70.9°F) to 29.5°C (85.1°F). Gradually decreasing rainfall results in drier conditions, although the city continues to experience a majority of rainy days. Weather in March »

Weather in April

April signifies a distinct change in the weather in Portoviejo. With a notable decrease in rainfall to 52mm (2.05"), it signals the onset of the drier season. Distinctively less rainy days and higher sunshine hours brighten up the city's landscapes. Weather in April »

Weather in May

May in Portoviejo makes a significant diversion from the previous months’ weather patterns. Comparing to the past months, May experiences a drastic drop in rainfall, reaching as low as 27mm (1.06"). Massive reduction in rainy days and significantly less cloud coverage means more bright, sunny days. Weather in May »

Weather in June

June brings in the driest phase of the year in Portoviejo, with rainfall decreasing further to merely 8mm (0.31"). The city becomes notably drier with a drop in the number of wet days, offering a more inviting climate for outdoor activities. Weather in June »

Weather in July

July adopts a consistent weather pattern from June, with slight changes observed in certain aspects. While the temperature differences between day and night remain minimal, rainfall remains at a significantly low level only reaching 6mm (0.24"). Weather in July »

Weather in August

There is a minor shift in Portoviejo's weather in August, with an observed gradual increase in rainfall to 9mm (0.35"). Despite this, August retains its position among the drier months of the year. While temperatures are slightly lower than the previous months, they are still comfortably warm. Weather in August »

Weather in September

Approaching the end of the dry spell, September experiences a minuscule increase in rainfall from the previous month. A slight rise in the temperature lower limit to 20.6°C (69.1°F) is seen, indicating a shift towards warmer nights. Weather in September »

Weather in October

October begins a transition back towards the wet season in Portoviejo with an increase in rainfall to 12mm (0.47"). While the lower temperatures remain largely stable, the extended sunlight hours offer ample time for outdoor activities. Weather in October »

Weather in November

November in Portoviejo presents a climate progressively turning wet, with rainfall further increasing to 10mm (0.39"). The consistent warmth, both during the day and at night, promotes a comfortably warm atmosphere. Even though the wind flow continues to be strong, it caters to the hot conditions, alleviating the overall heat. Weather in November »

Weather in December

December marks the official entry of the wet season in Portoviejo, with rainfall reaching 60mm (2.36"). Nevertheless, the climatic conditions remain consistently warm, ranging from 22.1°C (71.8°F) to 29.2°C (84.6°F). As is customary with the wet season, there appears a significant jump in the number of rainy days. Weather in December »