September weather forecast
Portoviejo, Ecuador

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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. Portoviejo experiences broadly consistent meteorological conditions, with slight fluctuations in the wind and warmth. A fractionally increased amount of rainfall days fails to mar the overall pleasant weather of September. The wind speed shows a steady upswing, guaranteeing comfort for both residents and visitors alike.

Temperature

September brings a marginal elevation to a still warm 29.5°C (85.1°F) from August's 28.9°C (84°F) in Portoviejo's average high-temperatures. The mean low-temperature during September nights is a pleasant 20.6°C (69.1°F).

Heat index

September's average heat index is computed to be a tropical 34°C (93.2°F). Exercise extra preventive actions, heat cramps and heat exhaustion are plausible. Continuous activity could result in heatstroke.
Be aware that heat index ratings are designed for shaded locations and minor breezes. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'feels like' or 'real feel', is a value derived by merging air temperature with the humidity to convey how the climate feels. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.

Humidity

In September, the average relative humidity is 72%.

Rainfall

July and September are months with the least rain when the rain falls for 7 days and typically aggregates up to 6mm (0.24") of rain.

Daylight

In September, the average length of the day is 12h and 7min.
On the first day of September, sunrise is at 06:18 and sunset at 18:24. On the last day of the month, sunrise is at 06:07 and sunset at 18:15 -05.

Sunshine

August and September, with an average of 6.6h of sunshine, are months with the most sunshine.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 6. January through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.

Frequently asked questions

Is it hot during September?

The average high-temperature, in September, in Portoviejo, is 29.5°C (85.1°F), while the average low-temperature is 20.6°C (69.1°F). In September, the average heat index (a.k.a. 'real feel', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 34°C (93.2°F).

What is the average humidity in September?

The average relative humidity in September is 72%.

What is the driest month?

The months with the least rainfall are July and September Rain falls for 7 days and accumulates 6mm (0.24") of rain.

How many days does it rain in September?

In Portoviejo, in September, it is raining for 7 days, with typically 6mm (0.24") of accumulated precipitation.

What is the average length of the day in September?

The average day length in September is 12h and 7min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 06:18 and sunset at 18:24. On the last day of the month, sunrise is at 06:07 and sunset at 18:15 -05.

What are the months with the most sunshine?

The months with the most sunshine are August and September, with an average of 6.6h of sunshine.

How long on average sun shines in September?

The average sunshine duration in September is 6.6h.

What are the months with the highest UV index?

January through December, with an average maximum UV index of 6, are months with the highest UV index.

When is the lowest UV index?

January through December, with an average maximum UV index of 6, are months with the lowest UV index.

How high is the UV index in September?

In Portoviejo, Ecuador, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health threat from exposure to Sun's UV rays.

Average temperature in September
Portoviejo, Ecuador

Average temperature in September - Portoviejo, Ecuador
  • Average high temperature in September: 29.5°C

The warmest months (with the highest average high temperature) are April and May (29.8°C).
The month with the lowest average high temperature is January (28.4°C).

  • Average low temperature in September: 20.6°C

The month with the highest average low temperature is January (22.4°C).
The coldest month (with the lowest average low temperature) is August (19.6°C).

Average pressure in September
Portoviejo, Ecuador

Average pressure in September - Portoviejo, Ecuador
  • Average pressure in September: 1012.1mbar

The months with the highest atmospheric pressure are August, September and October (1012.1mbar).
The month with the lowest atmospheric pressure is February (1010.9mbar).

Average wind speed in September
Portoviejo, Ecuador

Average wind speed in September - Portoviejo, Ecuador
  • Average wind speed in September: 8.3km/h

The windiest months (with the highest average wind speed) are October and November (8.4km/h).
The calmest month (with the lowest average wind speed) is March (5.5km/h).

Average humidity in September
Portoviejo, Ecuador

Average humidity in September - Portoviejo, Ecuador
  • Average humidity in September: 72%

The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is November (69%).

Average rainfall in September
Portoviejo, Ecuador

Average rainfall in September - Portoviejo, Ecuador
  • Average rainfall in September: 6mm

The wettest month (with the highest rainfall) is January (132mm).
The driest months (with the least rainfall) are July and September (6mm).

Average rainfall days in September
Portoviejo, Ecuador

Average rainfall days in September - Portoviejo, Ecuador
  • Average rainfall days in September: 7 days

The month with the highest number of rainy days is February (26.5 days).
The month with the least rainy days is August (4.9 days).

Average daylight in September /
Average sunshine in September
Portoviejo, Ecuador

Average daylight in September / Average sunshine in September - Portoviejo, Ecuador
  • Average daylight in September: 12h and 1min

The month with the longest days is December (Average daylight: 12h and 12min).
The month with the shortest days is June (Average daylight: 12h and 6min).

  • Average sunshine in September: 6h and 4min

The months with the most sunshine are August and September (Average sunshine: 6h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

Average sunshine days in September
Portoviejo, Ecuador

Average sunshine days in September - Portoviejo, Ecuador
  • Average sunshine days in September: 20.5 days

The month with the most sunshine days is August (23.3 days).
The month with the least sunshine days is February (1 days).

Average UV index in September
Portoviejo, Ecuador

Average UV index in September - Portoviejo, Ecuador
  • Average UV index in September: 6

The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 6).

Average cloud cover in September
Portoviejo, Ecuador

Average cloud cover in September - Portoviejo, Ecuador
  • Average cloud cover in September: 48

The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 46).

Average visibility in September
Portoviejo, Ecuador

Average visibility in September - Portoviejo, Ecuador
  • Average visibility in September: 10km

The months with the highest visibility are May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are February and March (8km).

Portoviejo, Ecuador

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