September weather forecast and climate
Irvine, United Kingdom

Weather in September

September, the first month of the autumn, in Irvine, is also a moderate month, with temperature in the range of an average high of 14.3°C (57.7°F) and an average low of 9.4°C (48.9°F).

Temperature

In Irvine, the average high-temperature is relatively the same as in August - a mild 14.3°C (57.7°F). In September, the average low-temperature is 9.4°C (48.9°F).

Humidity

January, August through December, with an average relative humidity of 88%, are most humid months in Irvine, United Kingdom.

Rainfall

In Irvine, during September, the rain falls for 18.9 days and regularly aggregates up to 54mm (2.13") of precipitation. In Irvine, United Kingdom, during the entire year, the rain falls for 233.5 days and collects up to 779mm (30.67") of precipitation.

Snowfall

In Irvine snow does not fall in May through November.

Daylight

In Irvine, the average length of the day is 12.7h.

Sunshine

In Irvine, the average sunshine in September is 5.8h.

UV index

The average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate health risk from the exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 3 transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
[Resources]

FAQ

What are the most humid months in Irvine?

Months with the highest humidity are January, August through December, with an average relative humidity of 88%.

What is the average humidity in September in Irvine?

In September, the average relative humidity in Irvine, United Kingdom, is 88%.

How many days does it rain in September in Irvine?

In Irvine, during September, the rain falls for 18.9 days and regularly aggregates up to 54mm (2.13") of precipitation.

When it does not snow in Irvine?

In Irvine, United Kingdom, snow does not fall in May through November.

What is the average length of the day in September in Irvine?

In September, the average length of the day is 12.7h.

How many hours of sunshine does Irvine have in September?

In Irvine, the average sunshine in September is 5.8h.

What is the UV index intensity in September in Irvine?

The average daily maximum UV index in September in Irvine is 3. A UV Index reading of 3 to 5 represents a moderate health threat from the exposure to the Sun's UV rays.

Average temperature in September
Irvine, United Kingdom

Average temperature in September - Irvine, United Kingdom
  • Average high temperature in September: 14.3°C

The warmest month (with the highest average high temperature) is July (16.6°C).
The month with the lowest average high temperature is January (5.4°C).

  • Average low temperature in September: 9.4°C

The month with the highest average low temperature is July (10.4°C).
The coldest month (with the lowest average low temperature) is February (2°C).

[Resources]

Average pressure in September
Irvine, United Kingdom

Average pressure in September - Irvine, United Kingdom
  • Average pressure in September: 1013.5mbar

The month with the highest atmospheric pressure is May (1015.4mbar).
The month with the lowest atmospheric pressure is November (1006.9mbar).

[Resources]

Average wind speed in September
Irvine, United Kingdom

Average wind speed in September - Irvine, United Kingdom
  • Average wind speed in September: 16.5km/h

The windiest month (with the highest average wind speed) is January (21.9km/h).
The calmest months (with the lowest average wind speed) are June and July (13.7km/h).

[Resources]

Average humidity in September
Irvine, United Kingdom

Average humidity in September - Irvine, United Kingdom
  • Average humidity in September: 88%

Months with the highest relative humidity are January, August, September, October, November and December (88%).
Months with the lowest relative humidity are April and May (83%).

[Resources]

Average rainfall in September
Irvine, United Kingdom

Average rainfall in September - Irvine, United Kingdom
  • Average rainfall in September: 54mm

The wettest month (with the highest rainfall) is August (87mm).
The driest month (with the least rainfall) is April (34mm).

[Resources]

Average rainfall days in September
Irvine, United Kingdom

Average rainfall days in September - Irvine, United Kingdom
  • Average rainfall days in September: 18.9 days

The month with the highest number of rainy days is August (22.9 days).
The month with the least rainy days is April (16.6 days).

[Resources]

Average snowfall in September
Irvine, United Kingdom

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

The month with the highest snowfall is February (61mm).
Months with the least snowfall are May, June, July, August, September, October and November (0mm).

[Resources]

Average snowfall days in September
Irvine, United Kingdom

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

The month with the highest number of snowfall days is February (4.2 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

[Resources]

Average daylight in September /
Average sunshine in September
Irvine, United Kingdom

Average daylight in September / Average sunshine in September - Irvine, United Kingdom
  • Average daylight in September: 12.7h

The month with the longest days is June (Average daylight: 17.4h).
The month with the shortest days is December (Average daylight: 7.2h).

  • Average sunshine in September: 5.8h

The month with the most sunshine is June (Average sunshine: 7.4h).
The month with the least sunshine is January (Average sunshine: 3.5h).

[Resources]

Average sunshine days in September
Irvine, United Kingdom

Average sunshine days in September - Irvine, United Kingdom
  • Average sunshine days in September: 8.1 days

The month with the most sunshine days is April (10.9 days).
The month with the least sunshine days is August (5.8 days).

[Resources]

Average UV index in September
Irvine, United Kingdom

Average UV index in September - Irvine, United Kingdom
  • Average UV index in September: 3

Months with the highest UV index are May, June and July (UV index 4).
Months with the lowest UV index are January, February, March, November and December (UV index 2).

[Resources]

Average cloud cover in September
Irvine, United Kingdom

Average cloud cover in September - Irvine, United Kingdom
  • Average cloud cover in September: 60

The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is April (Cloud cover 54).

[Resources]

Average visibility in September
Irvine, United Kingdom

Average visibility in September - Irvine, United Kingdom
  • Average visibility in September: 9km

Months with the highest visibility are January, February, March, April, May, June, September, October, November and December (9km).
Months with the lowest visibility are July and August (8km).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location