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 sea temperature 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
Weather in September
Temperature
A minor adjustment in Rhu's average high-temperature is noted with the start of September, touching a still moderate 13.9°C (57°F) from August's 15.8°C (60.4°F). During the nights in September, the temperature in Rhu averages to a frosty 8.7°C (47.7°F).Humidity
The months with the highest humidity in Rhu are January, August through December, with an average relative humidity of 89%.Rainfall
In September, in Rhu, the rain falls for 21.5 days. Throughout September, 80mm (3.15") of precipitation is accumulated. Throughout the year, in Rhu, there are 249.9 rainfall days, and 1079mm (42.48") of precipitation is accumulated.Snowfall
In Rhu, snow does not fall in May through October.Sea temperature
In September, the average sea temperature in Rhu, United Kingdom, is 13.7°C (56.7°F).Note: Unprotected swimming in 13.7°C (56.7°F) is dangerous due to potential cold shock. Especially when temperatures go below 10°C (50°F), leading to hyperventilation.
Daylight
In Rhu, the average length of the day in September is 12h and 44min.On the first day of September in Rhu, United Kingdom, sunrise is at 6:24 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 6:56 pm BST.
Sunshine
The average sunshine in September is 4.9h.UV index
In Rhu, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 3 during September translates into the following guidance:
Heed the precautions - It is counselled to guard against solar damage. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Frequently asked questions
What is the temperature in September in Rhu?
What are the most humid months in Rhu?
What is the average humidity in September in Rhu?
How many days does it rain in September in Rhu?
When it does not snow in Rhu?
What is the sea water temperature in September in Rhu?
How many hours of daylight does Rhu have in September?
When are sunrise and sunset in September in Rhu?
How many hours of sunshine does Rhu have in September?
What is the UV index reading in September in Rhu?
Average temperature in September
Rhu, United Kingdom
- Average high temperature in September: 13.9°C
The warmest month (with the highest average high temperature) is July (16.3°C).
The month with the lowest average high temperature is January (5°C).
- Average low temperature in September: 8.7°C
The month with the highest average low temperature is July (9.8°C).
The coldest month (with the lowest average low temperature) is February (1.4°C).
Average pressure in September
Rhu, United Kingdom
- Average pressure in September: 1013.1mbar
The month with the highest atmospheric pressure is May (1015.2mbar).
The month with the lowest atmospheric pressure is November (1006.6mbar).
Average wind speed in September
Rhu, United Kingdom
- Average wind speed in September: 14.5km/h
The windiest month (with the highest average wind speed) is January (19.3km/h).
The calmest months (with the lowest average wind speed) are June and July (11.9km/h).
Average humidity in September
Rhu, United Kingdom
- Average humidity in September: 89%
The months with the highest relative humidity are January, August, September, October, November and December (89%).
The months with the lowest relative humidity are April and May (83%).
Average rainfall in September
Rhu, United Kingdom
- Average rainfall in September: 80mm
The wettest month (with the highest rainfall) is December (116mm).
The driest month (with the least rainfall) is April (48mm).
Average rainfall days in September
Rhu, United Kingdom
- Average rainfall days in September: 21.5 days
The month with the highest number of rainy days is August (24 days).
The month with the least rainy days is February (17.8 days).
Average snowfall in September
Rhu, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (53mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Rhu, 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 June, July, August, September and October (0 days).
Average sea temperature in September
Rhu, United Kingdom
- Average sea temperature in September: 13.7°C
The best month for swimming (with the highest average sea temperature) is August (13.8°C).
The coldest month (with the lowest average sea temperature) is March (7.2°C).
Average daylight in September /
Average sunshine in September
Rhu, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 30min).
The month with the shortest days is December (Average daylight: 7h and 6min).
- Average sunshine in September: 4h and 5min
The month with the most sunshine is June (Average sunshine: 6h and 36min).
The month with the least sunshine is February (Average sunshine: 3h and 0min).
Average sunshine days in September
Rhu, United Kingdom
- Average sunshine days in September: 6.8 days
The month with the most sunshine days is April (8.8 days).
The months with the least sunshine days are July and August (5.4 days).
Average UV index in September
Rhu, United Kingdom
- Average UV index in September: 3
The months with the highest UV index are May and June (UV index 4).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Rhu, United Kingdom
- Average cloud cover in September: 68
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is April (Cloud cover 59).
Average visibility in September
Rhu, United Kingdom
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April, May and November (9km).
The months with the lowest visibility are June, July, August, September, October and December (8km).
Rhu, United Kingdom
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