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
Santon Downham, United Kingdom, registers an average high-temperature of a comfortable 18.4°C (65.1°F) with the arrival of September, showing minor deviation from the preceding month. During September, Santon Downham sees a mean low-temperature of 11.4°C (52.5°F).Humidity
In Santon Downham, the average relative humidity in September is 79%.Rainfall
In Santon Downham, United Kingdom, in September, it is raining for 11.3 days, with typically 28mm (1.1") of accumulated precipitation. Throughout the year, there are 166.7 rainfall days, and 404mm (15.91") of precipitation is accumulated.Snowfall
April through November are months without snowfall.Daylight
In Santon Downham, the average length of the day in September is 12h and 40min.On the first day of September in Santon Downham, sunrise is at 6:09 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:36 pm BST.
Sunshine
In September, the average sunshine is 7h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Santon Downham?
What is the average humidity in September in Santon Downham?
How much does it rain in Santon Downham in September?
When it does not snow in Santon Downham?
What is the average length of the day in September in Santon Downham?
When is the sunrise / sunset in September in Santon Downham?
How long on average sun shines in September in Santon Downham?
What is the UV index reading in September in Santon Downham?
Average temperature in September
Santon Downham, United Kingdom
- Average high temperature in September: 18.4°C
The warmest month (with the highest average high temperature) is August (21.2°C).
The month with the lowest average high temperature is January (6.1°C).
- Average low temperature in September: 11.4°C
The month with the highest average low temperature is August (13.5°C).
The coldest month (with the lowest average low temperature) is January (1.9°C).
Average pressure in September
Santon Downham, United Kingdom
- Average pressure in September: 1016.4mbar
The month with the highest atmospheric pressure is May (1016.6mbar).
The month with the lowest atmospheric pressure is November (1010mbar).
Average wind speed in September
Santon Downham, United Kingdom
- Average wind speed in September: 13.3km/h
The windiest months (with the highest average wind speed) are February and December (18.4km/h).
The calmest month (with the lowest average wind speed) is July (12.6km/h).
Average humidity in September
Santon Downham, United Kingdom
- Average humidity in September: 79%
The month with the highest relative humidity is December (89%).
The month with the lowest relative humidity is August (76%).
Average rainfall in September
Santon Downham, United Kingdom
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is June (50mm).
The driest month (with the least rainfall) is April (19mm).
Average rainfall days in September
Santon Downham, United Kingdom
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is September (11.3 days).
Average snowfall in September
Santon Downham, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (24mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Santon Downham, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.9 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
Santon Downham, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 42min).
The month with the shortest days is December (Average daylight: 7h and 48min).
- Average sunshine in September: 7h and 0min
The month with the most sunshine is August (Average sunshine: 8h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days in September
Santon Downham, United Kingdom
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is September (15.5 days).
The month with the least sunshine days is July (9.1 days).
Average UV index in September
Santon Downham, United Kingdom
- Average UV index in September: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Santon Downham, United Kingdom
- Average cloud cover in September: 49
The month with the most cloud cover is February (Cloud cover 62).
The months with the least cloud cover are April, August and September (Cloud cover 49).
Average visibility in September
Santon Downham, United Kingdom
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
