Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
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).Heat index
During September, the heat index is evaluated at a life-threatening hot 48°C (118.4°F). Beware: Heat exhaustion along with heat cramps are on the cards. Heatstroke could result from sustained physical activity.Data suggests that the heat index is set for environments in shade and with a light wind. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a value derived by merging air temperature with the humidity to convey how the climate feels. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.
Humidity
September and October, with an average relative humidity of 78%, are the least humid months in Nismes, Guyana.Rainfall
The month with the least rainfall is September, when the rain falls for 21 days and typically collects 55mm (2.17") of precipitation.Daylight
In September, the average length of the day is 12h and 10min.On the first day of September, sunrise is at 05:45 and sunset at 18:00. On the last day of the month, sunrise is at 05:40 and sunset at 17:44 -04.
Sunshine
In September, the average sunshine is 9h.UV index
March, April, July through November, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.Note: During September, 7 as the daily maximum UV index converts into the following advice:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Frequently asked questions
What part of the year is the hottest in Nismes?
How hot does it get in Nismes in September?
What are the least humid months in Nismes?
What is the average humidity in September in Nismes?
What is the driest month in Nismes?
How many days does it rain in September in Nismes?
How many hours of daylight does Nismes have in September?
What time are sunrise and sunset in September in Nismes?
How long on average sun shines in September in Nismes?
When is the highest UV index in Nismes?
What is the UV index reading in September in Nismes?
Average temperature in September
Nismes, 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
Nismes, 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
Nismes, 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
Nismes, 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
Nismes, 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
Nismes, 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
Nismes, Guyana
- Average daylight in September: 12h and 1min
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
Nismes, 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
Nismes, 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).
Average cloud cover in September
Nismes, Guyana
- Average cloud cover in September: 31
The month with the most cloud cover is May (Cloud cover 55).
The month with the least cloud cover is September (Cloud cover 31).
Average visibility in September
Nismes, Guyana
- Average visibility in September: 8km
The months with the highest visibility are March and April (9km).
The months with the lowest visibility are June and July (7km).
Nismes, Guyana
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