September weather forecast
Martlesham, United Kingdom

September

Weather in September

The first month of the autumn, September, is still a comfortable month in Martlesham, United Kingdom, with an average temperature varying between 18.4°C (65.1°F) and 12.7°C (54.9°F).

Temperature

Martlesham, United Kingdom, notes an average high-temperature of an enjoyable 18.4°C (65.1°F) in September, displaying minor variation from August. Martlesham witnesses a consistent average low-temperature of 12.7°C (54.9°F) throughout September.

Humidity

In Martlesham, the average relative humidity in September is 77%.

Rainfall

In Martlesham, during September, the rain falls for 12.2 days and regularly aggregates up to 27mm (1.06") of precipitation. Throughout the year, there are 175.8 rainfall days, and 418mm (16.46") of precipitation is accumulated.

Snowfall

April through October are months without snowfall in Martlesham.

Daylight

The average length of the day in September in Martlesham is 12h and 39min.
On the first day of the month, sunrise is at 6:07 am and sunset at 7:41 pm. On the last day of September, sunrise is at 6:55 am and sunset at 6:34 pm BST.

Sunshine

The average sunshine in September is 7.8h.

UV index

The average daily maximum UV index in September in Martlesham is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum UV index of 4 in September translates into the following recommendations:
Undertake protective steps - Preventing sun damage is advised. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.

Frequently asked questions

What is the average September temperature in Martlesham?
September temperatures vary between a high-temperature of 18.4°C (65.1°F) and a low-temperature of 12.7°C (54.9°F).
What is the average humidity in September in Martlesham?
In September, the average relative humidity in Martlesham, United Kingdom, is 77%.
How much does it rain in Martlesham in September?
In September, in Martlesham, the rain falls for 12.2 days. Throughout September, 27mm (1.06") of precipitation is accumulated.
When it does not snow in Martlesham?
In Martlesham, snow does not fall in April through October.
How many hours of daylight does Martlesham have in September?
In Martlesham, the average day length in September is 12h and 39min.
When are sunrise and sunset in September in Martlesham?
On the first day of September, sunrise is at 6:07 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:34 pm BST.
How long on average sun shines in September in Martlesham?
The average sunshine duration in September is 7.8h.
What is the UV index reading in September in Martlesham?
In Martlesham, United Kingdom, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September - Martlesham, United Kingdom
Average temperature in September
Martlesham, United Kingdom
  • Average high temperature in September: 18.4°C

The warmest month (with the highest average high temperature) is August (20.9°C).
The month with the lowest average high temperature is January (6.5°C).

  • Average low temperature in September: 12.7°C

The month with the highest average low temperature is August (14.8°C).
The coldest month (with the lowest average low temperature) is January (3.1°C).

Average pressure in September - Martlesham, United Kingdom
Average pressure in September
Martlesham, United Kingdom
  • Average pressure in September: 1016.7mbar

The months with the highest atmospheric pressure are May and September (1016.7mbar).
The month with the lowest atmospheric pressure is November (1010.4mbar).

Average wind speed in September - Martlesham, United Kingdom
Average wind speed in September
Martlesham, United Kingdom
  • Average wind speed in September: 16.2km/h

The windiest month (with the highest average wind speed) is December (21.9km/h).
The calmest month (with the lowest average wind speed) is July (14.7km/h).

Average humidity in September - Martlesham, United Kingdom
Average humidity in September
Martlesham, United Kingdom
  • Average humidity in September: 77%

The month with the highest relative humidity is December (87%).
The month with the lowest relative humidity is August (75%).

Average rainfall in September - Martlesham, United Kingdom
Average rainfall in September
Martlesham, United Kingdom
  • Average rainfall in September: 27mm

The wettest month (with the highest rainfall) is December (48mm).
The driest month (with the least rainfall) is April (18mm).

Average rainfall days in September - Martlesham, United Kingdom
Average rainfall days in September
Martlesham, United Kingdom
  • Average rainfall days in September: 12.2 days

The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is September (12.2 days).

Average snowfall in September - Martlesham, United Kingdom
Average snowfall in September
Martlesham, United Kingdom
  • Average snowfall in September: 0mm

The month with the highest snowfall is February (25mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in September - Martlesham, United Kingdom
Average snowfall days in September
Martlesham, United Kingdom
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (3.6 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 - Martlesham, United Kingdom
Average daylight in September /
Average sunshine in September
Martlesham, 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 5min

The month with the most sunshine is August (Average sunshine: 8h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).

Average sunshine days in September - Martlesham, United Kingdom
Average sunshine days in September
Martlesham, United Kingdom
  • Average sunshine days in September: 14.5 days

The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is February (10.8 days).

Average UV index in September - Martlesham, United Kingdom
Average UV index in September
Martlesham, 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, November and December (UV index 2).

Average cloud cover in September - Martlesham, United Kingdom
Average cloud cover in September
Martlesham, United Kingdom
  • Average cloud cover in September: 43

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 43).

Average visibility in September - Martlesham, United Kingdom
Average visibility in September
Martlesham, United Kingdom
  • Average visibility in September: 10km

The months with the highest visibility are March, June, August and September (10km).
The months with the lowest visibility are January, February, April, May, July, October, November and December (9km).

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