September weather forecastGrays, United Kingdom
September weather for Grays, United Kingdom: September is the month with the warmest seawater in Grays, United Kingdom, with an average sea temperature of 17.3°C (63.1°F). September, the first month of the autumn in Grays, is still a refreshing month, with temperature in the range of an average high of 18.8°C (65.8°F) and an average low of 11.8°C (53.2°F).
September
Weather in September
September, the first month of the autumn in Grays, is still a refreshing month, with temperature in the range of an average high of 18.8°C (65.8°F) and an average low of 11.8°C (53.2°F).Temperature
September begins with an average high-temperature of an enjoyable 18.8°C (65.8°F), reflecting close similarity to the preceding month. Throughout the month of September, Grays witnesses an average temperature of 11.8°C (53.2°F).Humidity
In September, the average relative humidity in Grays, United Kingdom, is 77%.Rainfall
In September, in Grays, United Kingdom, the rain falls for 10.2 days. Throughout September, 24mm (0.94") of precipitation is accumulated. Throughout the year, in Grays, there are 160.1 rainfall days, and 378mm (14.88") of precipitation is accumulated.Snowfall
May through October are months without snowfall.Sea temperature
The month with the warmest seawater in Grays is September, with an average sea temperature of 17.3°C (63.1°F).Note: For most individuals, swimming in 17.3°C (63.1°F) is not a pleasurable activity. Breathing becomes progressively more difficult as water temperature declines below 21°C (69.8°F).
Daylight
In Grays, United Kingdom, the average length of the day in September is 12h and 38min.On the first day of September in Grays, sunrise is at 6:12 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:38 pm BST.
Sunshine
The average sunshine in September is 7.5h.UV index
In September, the average daily maximum UV index in Grays is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index, 4 during September, leads to the following recommendations:
Take necessary precautions - Suggestions to elude sunburn are provided. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Grays, United Kingdom
- Average high temperature in September: 18.8°C
The warmest month (with the highest average high temperature) is July (22°C).
The month with the lowest average high temperature is January (6.7°C).
- Average low temperature in September: 11.8°C
The month with the highest average low temperature is August (14°C).
The coldest month (with the lowest average low temperature) is January (2.4°C).
Average pressure in September
Grays, United Kingdom
- Average pressure in September: 1017mbar
The month with the highest atmospheric pressure is September (1017mbar).
The month with the lowest atmospheric pressure is November (1010.7mbar).
Average wind speed in September
Grays, United Kingdom
- Average wind speed in September: 13.3km/h
The windiest month (with the highest average wind speed) is February (18.2km/h).
The calmest months (with the lowest average wind speed) are July and August (13.2km/h).
Average humidity in September
Grays, United Kingdom
- Average humidity in September: 77%
The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is August (73%).
Average rainfall in September
Grays, United Kingdom
- Average rainfall in September: 24mm
The wettest month (with the highest rainfall) is December (47mm).
The driest month (with the least rainfall) is April (19mm).
Average rainfall days in September
Grays, United Kingdom
- Average rainfall days in September: 10.2 days
The month with the highest number of rainy days is November (15.2 days).
The month with the least rainy days is September (10.2 days).
Average snowfall in September
Grays, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (22mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Grays, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in September
Grays, United Kingdom
- Average sea temperature in September: 17.3°C
The best month for swimming (with the highest average sea temperature) is September (17.3°C).
The coldest month (with the lowest average sea temperature) is March (7.9°C).
Average daylight in September /
Average sunshine in September
Grays, United Kingdom
- Average daylight in September: 12h and 36min
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 30min
The month with the most sunshine is August (Average sunshine: 8h and 18min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in September
Grays, United Kingdom
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is September (16.8 days).
The month with the least sunshine days is November (12.4 days).
Average UV index in September
Grays, United Kingdom
- Average UV index in September: 4
The months with the highest UV index are June, July and August (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
Grays, United Kingdom
- Average cloud cover in September: 46
The month with the most cloud cover is February (Cloud cover 61).
The months with the least cloud cover are August and September (Cloud cover 46).
Average visibility in September
Grays, 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).
