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
The months of July through September are noted for their lowest temperatures, with an average high-temperature of 27.7°C (81.9°F).Heat index
During September, the heat index is evaluated at a tropical 31°C (87.8°F). If activity and exposure persist, they could induce fatigue, leading to possible heat cramps.When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
Humidity
The months with the highest humidity are June through September, with an average relative humidity of 78%.Rainfall
In Gahi, in September, it is raining for 20.8 days, with typically 82mm (3.23") of accumulated precipitation. In Gahi, during the entire year, the rain falls for 285.2 days and collects up to 2066mm (81.34") of precipitation.Daylight
The average length of the day in September is 12h and 2min.On the first day of the month, sunrise is at 05:48 and sunset at 17:40. On the last day of September, sunrise is at 05:27 and sunset at 17:41 +12.
Sunshine
The average sunshine in September is 7.6h.UV index
The months with the highest UV index in Gahi are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: A typical high UV index of 7 in September suggests the following recommendations:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. 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
What time of the year is the coldest?
What is the usual temperature for Gahi in September?
What is the most humid month?
What is the average humidity in September?
How many days does it rain in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How long on average sun shines in September in Gahi?
What are the months with the highest UV index?
What are the months with the lowest UV index?
How high is the UV index in September?
Average temperature in September
Gahi, Wallis and Futuna
- Average high temperature in September: 27.7°C
The warmest months (with the highest average high temperature) are February and March (29.1°C).
The months with the lowest average high temperature are July, August and September (27.7°C).
- Average low temperature in September: 26.9°C
The month with the highest average low temperature is March (28.2°C).
The coldest month (with the lowest average low temperature) is August (26.8°C).
Average pressure in September
Gahi, Wallis and Futuna
- Average pressure in September: 1011.9mbar
The month with the highest atmospheric pressure is September (1011.9mbar).
The month with the lowest atmospheric pressure is January (1007.1mbar).
Average wind speed in September
Gahi, Wallis and Futuna
- Average wind speed in September: 25.4km/h
The windiest month (with the highest average wind speed) is July (27.2km/h).
The calmest month (with the lowest average wind speed) is March (17.2km/h).
Average humidity in September
Gahi, Wallis and Futuna
- Average humidity in September: 78%
The months with the highest relative humidity are June, July, August and September (78%).
The month with the lowest relative humidity is March (75%).
Average rainfall in September
Gahi, Wallis and Futuna
- Average rainfall in September: 82mm
The wettest month (with the highest rainfall) is February (405mm).
The driest month (with the least rainfall) is August (67mm).
Average rainfall days in September
Gahi, Wallis and Futuna
- Average rainfall days in September: 20.8 days
The month with the highest number of rainy days is December (28.2 days).
The month with the least rainy days is July (19.1 days).
Average daylight in September /
Average sunshine in September
Gahi, Wallis and Futuna
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 12h and 54min).
The month with the shortest days is June (Average daylight: 11h and 24min).
- Average sunshine in September: 7h and 4min
The month with the most sunshine is January (Average sunshine: 9h and 18min).
The months with the least sunshine are June and July (Average sunshine: 5h and 42min).
Average sunshine days in September
Gahi, Wallis and Futuna
- Average sunshine days in September: 6.8 days
The month with the most sunshine days is July (9.3 days).
The month with the least sunshine days is December (1.5 days).
Average UV index in September
Gahi, Wallis and Futuna
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in September
Gahi, Wallis and Futuna
- Average cloud cover in September: 46
The month with the most cloud cover is August (Cloud cover 49).
The months with the least cloud cover are March, April and May (Cloud cover 44).
Average visibility in September
Gahi, Wallis and Futuna
- Average visibility in September: 10km
The months with the highest visibility are March, April, May, June, July, August, September, October and November (10km).
The months with the lowest visibility are January, February and December (9km).
Gahi, Wallis and Futuna
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