September weather forecastMoelfre, United Kingdom

September

Weather in September

The first month of the autumn, September, is still a refreshing month in Moelfre, United Kingdom, with temperature in the range of an average low of 12.7°C (54.9°F) and an average high of 15.5°C (59.9°F).

Temperature

September's beginning signals an average high-temperature of a moderate 15.5°C (59.9°F), barely different from August's 16.6°C (61.9°F). In Moelfre, nights during September observe an average temperature decrease to a fresh 12.7°C (54.9°F).

Humidity

The average relative humidity in September is 83%.

Rainfall

In September, the rain falls for 15.4 days. Throughout September, 31mm (1.22") of precipitation is accumulated. Throughout the year, there are 196.7 rainfall days, and 430mm (16.93") of precipitation is accumulated.

Snowfall

In Moelfre, snow does not fall in April through October.

Sea temperature

In Moelfre, the average seawater temperature in September is 15.6°C (60.1°F).
Note: For the majority of people, swimming in water at 15.6°C (60.1°F) is not enjoyable. The challenge of controlling breathing escalates as the temperature decreases from 21°C (69.8°F) to 15°C (59°F).

Daylight

In September, the average length of the day is 12h and 41min.
On the first day of the month, sunrise is at 6:27 am and sunset at 8:06 pm. On the last day of September, sunrise is at 7:17 am and sunset at 6:55 pm BST.

Sunshine

In Moelfre, the average sunshine in September is 6.8h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Take precautions - Protection against sunburn is recommended. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.

Updated: Jun 29, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

During September, Moelfre experiences an average high-temperature of 15.5°C (59.9°F) and a low-temperature of 12.7°C (54.9°F).

The average relative humidity in September is 83%.

In Moelfre, during September, the rain falls for 15.4 days and regularly aggregates up to 31mm (1.22") of precipitation.

April through October are months without snowfall.

In September, the average sea temperature is 15.6°C (60.1°F). For most, swimming in 15.6°C (60.1°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

In Moelfre, the average day length in September is 12h and 41min.

On the first day of September, sunrise is at 6:27 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 6:55 pm BST.

In Moelfre, the average sunshine duration in September is 6.8h.

May through September, with an average maximum UV index of 4, are months with the highest UV index in Moelfre, United Kingdom.

In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium health risk from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

16.6°C

15.5°C

13.4°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

21.5km/h

22.1km/h

24.7km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

8.1

9.5

Average UV index

Average cloud cover

Average visibility

Average temperature in September
Moelfre, United Kingdom

Average high temperature in September: 15.5°C

The warmest month (with the highest average high temperature) is August (16.6°C).
The month with the lowest average high temperature is February (7.3°C).

Average low temperature in September: 12.7°C

The month with the highest average low temperature is August (14.1°C).
The coldest month (with the lowest average low temperature) is February (5°C).

Average pressure in September
Moelfre, United Kingdom

Average pressure in September: 1015.5mbar

The month with the highest atmospheric pressure is May (1016.1mbar).
The month with the lowest atmospheric pressure is November (1008.7mbar).

Average wind speed in September
Moelfre, United Kingdom

Average wind speed in September: 21.4km/h

The windiest month (with the highest average wind speed) is December (28.6km/h).
The calmest month (with the lowest average wind speed) is June (17.2km/h).

Average humidity in September
Moelfre, United Kingdom

Average humidity in September: 83%

The months with the highest relative humidity are July and August (84%).
The months with the lowest relative humidity are April and November (80%).

Average rainfall in September
Moelfre, United Kingdom

Average rainfall in September: 31mm

The wettest month (with the highest rainfall) is November (51mm).
The driest months (with the least rainfall) are April and May (21mm).

Average rainfall days in September
Moelfre, United Kingdom

Average rainfall days in September: 15.4 days

The month with the highest number of rainy days is August (19.9 days).
The month with the least rainy days is June (13.2 days).

Average snowfall in September
Moelfre, United Kingdom

Average snowfall in September: 0mm

The month with the highest snowfall is January (10mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in September
Moelfre, United Kingdom

Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (2.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in September
Moelfre, United Kingdom

Average sea temperature in September: 15.6°C

The best month for swimming (with the highest average sea temperature) is August (15.7°C).
The coldest month (with the lowest average sea temperature) is March (7.9°C).

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

Average daylight in September: 12h and 42min

The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 36min).

Average sunshine in September: 6h and 48min

The month with the most sunshine is May (Average sunshine: 8h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 42min).

Average sunshine days in September
Moelfre, United Kingdom

Average sunshine days in September: 11 days

The month with the most sunshine days is June (14.7 days).
The month with the least sunshine days is December (6.2 days).

Average UV index in September
Moelfre, 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
Moelfre, United Kingdom

Average cloud cover in September: 53

The month with the most cloud cover is December (Cloud cover 65).
The month with the least cloud cover is May (Cloud cover 46).

Average visibility in September
Moelfre, United Kingdom

Average visibility in September: 10km

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