September weather forecastAmpa, Guyana

September

Weather in September

September, the first month of the autumn in Ampa, is still a hot month, with an average temperature ranging between max 33.1°C (91.6°F) and min 22.9°C (73.2°F).

Temperature

September is the warmest month of the year, registering average temperatures as high as 33.1°C (91.6°F) and as low as 22.9°C (73.2°F).

Heat index

In September, the average heat index is evaluated at a life-threatening hot 48°C (118.4°F). Heed: Expect heat cramps and heat exhaustion. Continued action may cause heatstroke.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', arises from combining readings of air temperature and relative moisture content. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

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 Ampa. Rain falls for 21 days and accumulates 55mm (2.17") of precipitation.

Daylight

The average length of the day in September is 12h and 9min.
On the first day of the month, sunrise is at 05:47 and sunset at 18:01. On the last day of September, sunrise is at 05:42 and sunset at 17:46 -04.

Sunshine

In September, the average sunshine is 9h.

UV index

The months with the highest UV index are March, April, July through November, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The average daily UV index of 7 in September transforms into the following instructions:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.

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

Frequently asked questions

September is the warmest month, exhibiting average temperatures of 33.1°C (91.6°F) at the peak and 22.9°C (73.2°F) at the base.

The average high-temperature, in September, in Ampa, is 33.1°C (91.6°F), while the average low-temperature is 22.9°C (73.2°F). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in September is evaluated at 48°C (118.4°F).

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

In September, the average relative humidity in Ampa is 78%.

The month with the least rainfall in Ampa, Guyana, is September, when the rain falls for 21 days and typically collects 55mm (2.17") of precipitation.

In Ampa, Guyana, during September, the rain falls for 21 days and regularly aggregates up to 55mm (2.17") of precipitation.

In September, the average day length in Ampa, Guyana, is 12h and 9min.

In September, on the first day of the month, sunrise is at 05:47 and sunset at 18:01. On the last day of the month, in Ampa, Guyana, sunrise is at 05:42 and sunset at 17:46 -04.

In Ampa, the average sunshine duration in September is 9h.

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

In September, the average daily maximum UV index in Ampa, Guyana, is 7. A UV Index reading of 6 to 7 represents a high hazard to health from unsafe exposure to Sun's UV rays.

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
Ampa, 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
Ampa, 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
Ampa, 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
Ampa, 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
Ampa, 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
Ampa, 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
Ampa, 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 48min).

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
Ampa, 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
Ampa, 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).