September weather forecastPomona, Guyana

September

Weather in September

The first month of the autumn, September, is also a hot month in Pomona, Guyana, with temperature in the range of an average low of 22.9°C (73.2°F) and an average high of 33.1°C (91.6°F).

Temperature

In Pomona, temperatures reach their average annual highs in September, measuring 33.1°C (91.6°F) and a minimum average of 22.9°C (73.2°F).

Heat index

September's heat index is estimated at a life-threatening hot 48°C (118.4°F). Heed: Expect heat cramps and heat exhaustion. Continued action may cause heatstroke.
One should consider that heat index numbers are for shaded settings and light wind. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

The months with the lowest humidity are September and October, with an average relative humidity of 78%.

Rainfall

September is the month with the least rainfall in Pomona. Rain falls for 21 days and accumulates 55mm (2.17") of precipitation.

Daylight

The average length of the day in September in Pomona is 12h and 10min.
On the first day of September in Pomona, sunrise is at 05:46 and sunset at 18:01. On the last day of the month, sunrise is at 05:41 and sunset at 17:45 -04.

Sunshine

In September, the average sunshine in Pomona is 9h.

UV index

March, April, July through November, with an average maximum UV index of 7, are months with the highest UV index in Pomona. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The maximum daily UV index of 7 in September interprets into the following recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.

Updated: Feb 19, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

September is the warmest month, with the temperature often reaching an average high of 33.1°C (91.6°F) and an average low of 22.9°C (73.2°F).

In Pomona, in September, the average high-temperature is 33.1°C (91.6°F), and the average low-temperature is 22.9°C (73.2°F). In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 48°C (118.4°F).

September and October, with an average relative humidity of 78%, are the least humid months in Pomona.

In September, the average relative humidity is 78%.

September is the month with the least rainfall. Rain falls for 21 days and accumulates 55mm (2.17") of precipitation.

In September, the rain falls for 21 days. Throughout September, 55mm (2.17") of precipitation is accumulated.

In September, the average day length in Pomona is 12h and 10min.

On the first day of September in Pomona, sunrise is at 05:46 and sunset at 18:01. On the last day of the month, sunrise is at 05:41 and sunset at 17:45 -04.

In September, the average sunshine duration is 9h.

The months with the highest UV index in Pomona, Guyana, are March, April, July through November, with an average maximum UV index of 7.

In Pomona, Guyana, the average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high health threat from unprotected exposure to 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

32.2°C

33.1°C

32.9°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

5.8km/h

6.2km/h

6.7km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

8.5

6.2

5.2

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Pomona, Guyana

Average high temperature in September: 33.1°C

The warmest month (with the highest average high temperature) is September (33.1°C).
The month with the lowest average high temperature is January (29.3°C).

Average low temperature in September: 22.9°C

The month with the highest average low temperature is October (23.5°C).
The coldest month (with the lowest average low temperature) is January (21.8°C).

Average pressure in September
Pomona, Guyana

Average pressure in September: 1011.6mbar

The month with the highest atmospheric pressure is June (1013.3mbar).
The month with the lowest atmospheric pressure is November (1009.8mbar).

Average wind speed in September
Pomona, Guyana

Average wind speed in September: 5.8km/h

The windiest month (with the highest average wind speed) is March (7.3km/h).
The calmest months (with the lowest average wind speed) are July and August (5.1km/h).

Average humidity in September
Pomona, Guyana

Average humidity in September: 78%

The month with the highest relative humidity is June (85%).
The months with the lowest relative humidity are September and October (78%).

Average rainfall in September
Pomona, Guyana

Average rainfall in September: 55mm

The wettest month (with the highest rainfall) is June (167mm).
The driest month (with the least rainfall) is September (55mm).

Average rainfall days in September
Pomona, Guyana

Average rainfall days in September: 21 days

The month with the highest number of rainy days is December (29.1 days).
The month with the least rainy days is August (20.8 days).

Average daylight in September /
Average sunshine in September
Pomona, Guyana

Average daylight in September: 12h and 12min

The month with the longest days is June (Average daylight: 12h and 30min).
The month with the shortest days is December (Average daylight: 11h and 42min).

Average sunshine in September: 9h and 0min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 6h and 0min).

Average sunshine days in September
Pomona, Guyana

Average sunshine days in September: 6.2 days

The month with the most sunshine days is August (8.5 days).
The month with the least sunshine days is December (0.3 days).

Average UV index in September
Pomona, Guyana

Average UV index in September: 7

The months with the highest UV index are March, April, July, August, September, October and November (UV index 7).
The months with the lowest UV index are January, February, May, June and December (UV index 6).