Wales - United Kingdom weather in September 2025
Wales - United Kingdom weather in September 2025
Day
17 °C
Night
11 °C
Sea
16 °C
Precipitation
83 mm
in month
Rainy days
13 days
in month
Daylight
13 hours
average
Sunshine
5 hours
average
Humidity
86 %
Day
17 °C
Night
11 °C
Sea
16 °C
Precipitation
83 mm
in month
Rainy days
13 days
in month
Daylight
13 hours
average
Sunshine
5 hours
average
Humidity
86 %
Overview: Wales - United Kingdom
Travel information
Weather charts for Wales - United Kingdom
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Beach
City
17 °C
15 °C21 °C17 °C
13 °C
Weather overview and FAQs
Weather overview
In September in Wales, the average air temperature ranges from 17 °C (63 °F) during the day to 11 °C (52 °F) at night. There are 13 days of rain on average, where the rainfall is 83 mm (3.27 in).
Are there good conditions to visit in Wales in September?
Wales can be visited in September - the weather will be moderate. A relatively low temperature of 17 °C (63 °F) may be ideal for walking or outdoor activities, but some people may have a different idea of the holiday. The temperature of 11 °C (52 °F) at night may make it better to dine inside or to put on more clothes for a dinner outside.
What temperature can I expect during the day in Wales in September?
In September in Wales, the average daily temperatures will be 17 °C (63 °F). Nice temperature for walking around the city or on the beach, but you will probably get cold soon when wearing a swimsuit. When walking around all day, people used to cold conditions, pull out their shorts and get rid of their sweaters. On some days, when spending time in the direct sun, sunscreen can be useful, especially for people with more sensitive skin.
How heavy is the precipitation in September in Wales?
In Wales in September, there is 83 mm (3.27 in) rainfall, which means on average 3 mm (0.11 in) rainfall per day.
What is the average number of rainy days in September in Wales?
There are 13 days, which are rainy in Wales in September, that is, days with precipitation more than 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 3.1 days of the week, or in general - 44 % days.
What is the air temperature in September in Wales at night?
The average night temperature in Wales in September is 11 °C (52 °F). Nights can be cooler, morning running can be refreshing but choose appropriate clothing, evening outdoor sitting can be pleasant but you can also be cold.
What is the humidity in September in Wales?
In Wales in September, expect humidity around 86 %. This humidity is rather above average, but except for sensitive individuals, it should not be a problem.
Is the weather in Wales warmer in September than in October?
Yes, in September in Wales it is warmer than in October by 3 °C (38 °F).
How many hours of sun to expect in September in Wales?
In September in Wales, you can expect around 5 hours of sunshine.
How long is the day (from dawn till dusk) in Wales in September?
The length of daylight in Wales in September is 13 hours.
Is Wales rainier in September than in October?
No, in Wales in September it does not rain more than in October.
How windy is it in September in Wales?
In September in Wales, there will be an average wind scale of 5.
Is the temperature rising or falling in the course of time in Wales in September?
During September in Wales, the day temperatures are decreasing - from 18 °C (65 °F) at the beginning of the month to 16 °C (61 °F) at the end of the month.