September weather forecastUnión Oriental, Ecuador

September

Weather in September

September, the first month of the autumn in Unión Oriental, is a hot month, with temperature in the range of an average low of 18.8°C (65.8°F) and an average high of 30.8°C (87.4°F).

Temperature

Unión Oriental notes the warmest temperatures in September, with a high average of 30.8°C (87.4°F) and a low of 18.8°C (65.8°F).

Heat index

The heat index value during September is estimated at a sweltering 39°C (102.2°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
Research indicates the heat index considers values in shaded locales and with light winds. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. A person's impression of weather can be shaped by several aspects, among them metabolic variations, pregnancy, and levels of physical activity. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

With an average relative humidity of 75%, September is the least humid month.

Rainfall

In Unión Oriental, in September, it is raining for 24.2 days, with typically 150mm (5.91") of accumulated precipitation. Throughout the year, there are 310.3 rainfall days, and 2604mm (102.52") of precipitation is accumulated.

Daylight

The months with the shortest days in Unión Oriental are March and September, with an average of 12h and 6min of daylight.
On the first day of the month, sunrise is at 06:03 and sunset at 18:10. On the last day of September, sunrise is at 05:53 and sunset at 18:00 -05.

Sunshine

The month with the most sunshine is September, with an average of 8.8h of sunshine.

UV index

The months with the highest UV index are January, February, May, July through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index of 6 in September interprets into the following recommendations:
Shield from overexposure. Defense against sun-related harm is required. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.

Updated: Jun 9, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In Unión Oriental, Ecuador, the peak temperatures are generally noted in September, averaging a high of 30.8°C (87.4°F) and a low of 18.8°C (65.8°F).

During September, Unión Oriental experiences an average high-temperature of 30.8°C (87.4°F) and a low-temperature of 18.8°C (65.8°F). In September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is estimated at 39°C (102.2°F).

The least humid month is September, with an average relative humidity of 75%.

In Unión Oriental, the average relative humidity in September is 75%.

In Unión Oriental, during September, the rain falls for 24.2 days and regularly aggregates up to 150mm (5.91") of precipitation.

The months with the shortest days are March and September, with an average of 12h and 6min of daylight.

In September, the average day length is 12h and 7min.

In September, on the first day of the month, sunrise is at 06:03 and sunset at 18:10. On the last day of the month, sunrise is at 05:53 and sunset at 18:00 -05.

September has the most sunshine of the year, with an average of 8.8h of sunshine.

The average sunshine duration in September is 8.8h.

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

The average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

29.2°C

30.8°C

30.4°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

4.6km/h

4.8km/h

4.5km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

6.8

4.6

2.5

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Unión Oriental, Ecuador

Average high temperature in September: 30.8°C

The warmest month (with the highest average high temperature) is September (30.8°C).
The month with the lowest average high temperature is June (26.5°C).

Average low temperature in September: 18.8°C

The month with the highest average low temperature is February (20.4°C).
The coldest months (with the lowest average low temperature) are July and August (18.3°C).

Average pressure in September
Unión Oriental, Ecuador

Average pressure in September: 1014mbar

The month with the highest atmospheric pressure is July (1015.7mbar).
The month with the lowest atmospheric pressure is November (1010.9mbar).

Average wind speed in September
Unión Oriental, Ecuador

Average wind speed in September: 4.5km/h

The windiest month (with the highest average wind speed) is September (4.5km/h).
The calmest months (with the lowest average wind speed) are April and May (3.6km/h).

Average humidity in September
Unión Oriental, Ecuador

Average humidity in September: 75%

The months with the highest relative humidity are April and May (88%).
The month with the lowest relative humidity is September (75%).

Average rainfall in September
Unión Oriental, Ecuador

Average rainfall in September: 150mm

The wettest month (with the highest rainfall) is November (289mm).
The driest month (with the least rainfall) is July (144mm).

Average rainfall days in September
Unión Oriental, Ecuador

Average rainfall days in September: 24.2 days

The month with the highest number of rainy days is March (27.7 days).
The month with the least rainy days is August (23.3 days).

Average daylight in September /
Average sunshine in September
Unión Oriental, Ecuador

Average daylight in September: 12h and 6min

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

Average sunshine in September: 8h and 48min

The month with the most sunshine is September (Average sunshine: 8h and 48min).
The month with the least sunshine is June (Average sunshine: 5h and 6min).

Average sunshine days in September
Unión Oriental, Ecuador

Average sunshine days in September: 4.6 days

The month with the most sunshine days is August (6.8 days).
The month with the least sunshine days is November (2.1 days).

Average UV index in September
Unión Oriental, Ecuador

Average UV index in September: 6

The months with the highest UV index are January, February, May, July, August, September, October, November and December (UV index 6).
The months with the lowest UV index are March, April and June (UV index 5).