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
Groningen, Suriname, starts September with an average high-temperature of a still tropical 31.5°C (88.7°F), hinting at a minimal fluctuation from August. Groningen's average low-temperature in September is measured at a moderately hot 24.6°C (76.3°F).Heat index
The heat index in September is calculated to be a blistering 41°C (105.8°F). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. 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 particularly relevant to babies and toddlers. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. The body is at risk of dehydration and related complications when it fails to shed excessive heat.
Humidity
September and October, with an average relative humidity of 77%, are the least humid months.Rainfall
The month with the least rainfall is September, when the rain falls for 13.5 days and typically collects 34mm (1.34") of precipitation.Daylight
In September, the average length of the day is 12h and 9min.On the first day of September, sunrise is at 06:35 and sunset at 18:48. On the last day of the month, sunrise is at 06:29 and sunset at 18:33 -03.
Sunshine
With an average of 9.6h of sunshine, September has the most sunshine of the year.UV index
February, March, June through November, with an average maximum UV index of 7, are months with the highest UV index in Groningen. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.Note: In September, a daily maximum UV index of 7 leads to the following instructions:
Deflect overexposure. Sun protection is a necessity. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September?
What is the least humid month?
What is the average humidity in September?
What is the driest month?
How many days does it rain in September?
How many hours of daylight does Groningen have in September?
When are sunrise and sunset in September?
What month has the most sunshine in Groningen?
How many hours of sunshine does Groningen have in September?
What is the month with the highest UV index?
How high is the UV index in September?
Average temperature in September
Groningen, Suriname
- Average high temperature in September: 31.5°C
The warmest month (with the highest average high temperature) is October (31.9°C).
The month with the lowest average high temperature is February (28.5°C).
- Average low temperature in September: 24.6°C
The months with the highest average low temperature are October and November (24.8°C).
The coldest month (with the lowest average low temperature) is January (23.8°C).
Average pressure in September
Groningen, Suriname
- Average pressure in September: 1011.5mbar
The months with the highest atmospheric pressure are June and July (1012.8mbar).
The month with the lowest atmospheric pressure is November (1009.4mbar).
Average wind speed in September
Groningen, Suriname
- Average wind speed in September: 12.5km/h
The windiest month (with the highest average wind speed) is February (14.9km/h).
The calmest month (with the lowest average wind speed) is July (10.4km/h).
Average humidity in September
Groningen, Suriname
- Average humidity in September: 77%
The months with the highest relative humidity are May and June (84%).
The months with the lowest relative humidity are September and October (77%).
Average rainfall in September
Groningen, Suriname
- Average rainfall in September: 34mm
The wettest month (with the highest rainfall) is May (156mm).
The driest month (with the least rainfall) is September (34mm).
Average rainfall days in September
Groningen, Suriname
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is May (28.1 days).
The month with the least rainy days is September (13.5 days).
Average daylight in September /
Average sunshine in September
Groningen, Suriname
- 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 48min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is September (Average sunshine: 9h and 36min).
The months with the least sunshine are February and April (Average sunshine: 6h and 42min).
Average sunshine days in September
Groningen, Suriname
- Average sunshine days in September: 14 days
The month with the most sunshine days is September (14 days).
The months with the least sunshine days are February and May (1 days).
Average UV index in September
Groningen, Suriname
- Average UV index in September: 7
The months with the highest UV index are February, March, June, July, August, September, October and November (UV index 7).
The months with the lowest UV index are January, April, May and December (UV index 6).
Average cloud cover in September
Groningen, Suriname
- Average cloud cover in September: 21
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is September (Cloud cover 21).
Average visibility in September
Groningen, Suriname
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Groningen, Suriname
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