September weather forecast
Aishalton, Guyana

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Weather in September

September brings a clear shift in weather patterns for Aishalton. Rainfall continues its gradual decline, providing a respite from the previous wet months. The month is characterized by lesser winds and decreasing humidity. Still, temperature fluctuations in September remain minimal, maintaining a pleasant warmth. The total rainfall drops significantly, down to 66mm (2.6"), signaling the end of the rainy season.

Temperature

Aishalton's weather in September indicates an average high-temperature of a still tropical 32.5°C (90.5°F), nearly consistent with the 31.2°C (88.2°F) of August. In Aishalton, the nighttime temperature averages to a warm 23.2°C (73.8°F) during September.

Heat index

The heat index for September is calculated to be a scorching 42°C (107.6°F). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
In the scope of the heat index, its values resonate with shade and light wind conditions. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', takes into account both air temperature and humidity to illustrate what people actually feel. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

The average relative humidity in September in Aishalton is 71%.

Rainfall

In September, in Aishalton, Guyana, the rain falls for 20 days. Throughout September, 66mm (2.6") of precipitation is accumulated. In Aishalton, during the entire year, the rain falls for 204.4 days and collects up to 941mm (37.05") of precipitation.

Snowfall

The only month with snowfall is September. The month with the most snowfall is September, when snow falls for 0.1 days and typically aggregates up to 1mm (0.04") of snow.

Daylight

In September, the average length of the day is 12h and 8min.
On the first day of the month, sunrise is at 05:51 and sunset at 18:01. On the last day of September, sunrise is at 05:43 and sunset at 17:49 -04.

Sunshine

In September, the average sunshine is 9.8h.

UV index

January through May, July through December, with an average maximum UV index of 7, are months with the highest UV index in Aishalton. 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 UV index of 7 in September translates into these instructions:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. 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. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Updated: Feb 19, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

How hot is it in Aishalton in September?

In September, in Aishalton, the average high-temperature is 32.5°C (90.5°F), and the average low-temperature is 23.2°C (73.8°F). In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is calculated to be 42°C (107.6°F).

What is the average humidity in September in Aishalton?

The average relative humidity in September in Aishalton is 71%.

How much does it rain in Aishalton in September?

In Aishalton, Guyana, in September, it is raining for 20 days, with typically 66mm (2.6") of accumulated precipitation.

When does it snow the most in Aishalton?

September is the month with the most snowfall in Aishalton, Guyana. Snow falls for 0.1 days and accumulates 1mm (0.04") of snow.

When does it start to snow in Aishalton?

September is the first month it typically snows in Aishalton. Throughout September, in the average 0.1 snowfall days, it receives 1mm (0.04") of snow.

What is the average length of the day in September in Aishalton?

The average day length in September is 12h and 8min.

When is the sunrise / sunset in September in Aishalton?

In September, on the first day of the month, sunrise is at 05:51 and sunset at 18:01. On the last day of the month, in Aishalton, Guyana, sunrise is at 05:43 and sunset at 17:49 -04.

How long on average sun shines in September in Aishalton?

The average sunshine duration in September in Aishalton is 9.8h.

What are the months with the highest UV index in Aishalton?

The months with the highest UV index in Aishalton are January through May, July through December, with an average maximum UV index of 7.

How high is the UV index in September in Aishalton?

The average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in September
Aishalton, Guyana

Average temperature in September - Aishalton, Guyana
  • Average high temperature in September: 32.5°C

The warmest month (with the highest average high temperature) is March (34.5°C).
The months with the lowest average high temperature are June and July (30°C).

  • Average low temperature in September: 23.2°C

The month with the highest average low temperature is April (24°C).
The coldest month (with the lowest average low temperature) is July (22.2°C).

Average pressure in September
Aishalton, Guyana

Average pressure in September - Aishalton, Guyana
  • Average pressure in September: 1011.2mbar

The month with the highest atmospheric pressure is July (1012.9mbar).
The month with the lowest atmospheric pressure is November (1008.8mbar).

Average wind speed in September
Aishalton, Guyana

Average wind speed in September - Aishalton, Guyana
  • Average wind speed in September: 8.4km/h

The windiest month (with the highest average wind speed) is February (16.3km/h).
The calmest month (with the lowest average wind speed) is July (7.2km/h).

Average humidity in September
Aishalton, Guyana

Average humidity in September - Aishalton, Guyana
  • Average humidity in September: 71%

The months with the highest relative humidity are June and July (82%).
The month with the lowest relative humidity is March (59%).

Average rainfall in September
Aishalton, Guyana

Average rainfall in September - Aishalton, Guyana
  • Average rainfall in September: 66mm

The wettest month (with the highest rainfall) is June (186mm).
The driest month (with the least rainfall) is January (9mm).

Average rainfall days in September
Aishalton, Guyana

Average rainfall days in September - Aishalton, Guyana
  • Average rainfall days in September: 20 days

The month with the highest number of rainy days is July (27.8 days).
The month with the least rainy days is January (6 days).

Average snowfall in September
Aishalton, Guyana

Average snowfall in September - Aishalton, Guyana
  • Average snowfall in September: 1mm

The month with the highest snowfall is September (1mm).
The months with the least snowfall are January, February, March, April, May, June, July, August, October, November and December (0mm).

Average snowfall days in September
Aishalton, Guyana

Average snowfall days in September - Aishalton, Guyana
  • Average snowfall days in September: 0.1 days

The month with the highest number of snowfall days is September (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, October, November and December (0 days).

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

Average daylight in September / Average sunshine in September - Aishalton, Guyana
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 12h and 18min).
The month with the shortest days is December (Average daylight: 12h and 0min).

  • Average sunshine in September: 9h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 7h and 48min).

Average sunshine days in September
Aishalton, Guyana

Average sunshine days in September - Aishalton, Guyana
  • Average sunshine days in September: 7.2 days

The month with the most sunshine days is January (22.4 days).
The month with the least sunshine days is June (1.9 days).

Average UV index in September
Aishalton, Guyana

Average UV index in September - Aishalton, Guyana
  • Average UV index in September: 7

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

Average cloud cover in September
Aishalton, Guyana

Average cloud cover in September - Aishalton, Guyana
  • Average cloud cover in September: 30

The month with the most cloud cover is May (Cloud cover 49).
The month with the least cloud cover is October (Cloud cover 28).

Average visibility in September
Aishalton, Guyana

Average visibility in September - Aishalton, Guyana
  • Average visibility in September: 10km

The months with the highest visibility are January, February, March, April, September, October, November and December (10km).
The months with the lowest visibility are May, June, July and August (9km).

Aishalton, Guyana

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