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 snowfall in September
- Average snowfall 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
September
Weather in September
Temperature
Iffley notes an average high-temperature of an enjoyable 18°C (64.4°F) in September, displaying minor variation from August. Throughout September, Iffley anticipates an average low-temperature of 10°C (50°F).Humidity
In Iffley, United Kingdom, the average relative humidity in September is 82%.Rainfall
March and September are months with the least rain in Iffley when the rain falls for 11.3 days and typically aggregates up to 18mm (0.71") of rain.Snowfall
April through November are months without snowfall in Iffley, United Kingdom.Daylight
In Iffley, the average length of the day in September is 12h and 38min.On the first day of the month, sunrise is at 6:18 am and sunset at 7:51 pm. On the last day of September, in Iffley, sunrise is at 7:05 am and sunset at 6:44 pm BST.
Sunshine
The average sunshine in September is 7h.UV index
May through September, with an average maximum UV index of 4, are months with the highest UV index. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum UV index of 4 in September translates into the following recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Iffley in September?
What is the average humidity in September in Iffley?
What is the driest month in Iffley?
How much does it rain in Iffley in September?
When it does not snow in Iffley?
How many hours of daylight does Iffley have in September?
What time are sunrise and sunset in September in Iffley?
How long on average sun shines in September in Iffley?
What are the months with the highest UV index in Iffley?
How high is the UV index in September in Iffley?
Average temperature in September
Iffley, United Kingdom
- Average high temperature in September: 18°C
The warmest month (with the highest average high temperature) is July (20.7°C).
The month with the lowest average high temperature is January (6.3°C).
- Average low temperature in September: 10°C
The month with the highest average low temperature is August (12.3°C).
The coldest month (with the lowest average low temperature) is January (1.4°C).
Average pressure in September
Iffley, United Kingdom
- Average pressure in September: 1016.6mbar
The month with the highest atmospheric pressure is May (1016.7mbar).
The month with the lowest atmospheric pressure is November (1010.2mbar).
Average wind speed in September
Iffley, United Kingdom
- Average wind speed in September: 13.2km/h
The windiest month (with the highest average wind speed) is February (18.2km/h).
The calmest month (with the lowest average wind speed) is July (12.8km/h).
Average humidity in September
Iffley, United Kingdom
- Average humidity in September: 82%
The month with the highest relative humidity is December (91%).
The months with the lowest relative humidity are July and August (80%).
Average rainfall in September
Iffley, United Kingdom
- Average rainfall in September: 18mm
The wettest month (with the highest rainfall) is November (36mm).
The driest months (with the least rainfall) are March and September (18mm).
Average rainfall days in September
Iffley, United Kingdom
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is July (16.9 days).
The month with the least rainy days is September (11.3 days).
Average snowfall in September
Iffley, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (19mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Iffley, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Iffley, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in September: 7h and 0min
The month with the most sunshine is July (Average sunshine: 7h and 36min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days in September
Iffley, United Kingdom
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is September (16.1 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in September
Iffley, United Kingdom
- Average UV index in September: 4
The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Iffley, United Kingdom
- Average cloud cover in September: 51
The month with the most cloud cover is November (Cloud cover 63).
The month with the least cloud cover is September (Cloud cover 51).
Average visibility in September
Iffley, United Kingdom
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, May, July, August, October and December (9km).
The months with the lowest visibility are April, June, September and November (8km).
