Brecon climate — normals and trends
Brecon (United Kingdom) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.2 °C and it receives 1,089 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (14.3 °C on average) and the coldest is January (2.7 °C). Rainfall peaks in December.
Brecon averages 57 frost days, 0 hot days (≥ 30 °C) and 168 rainy days per year.
Brecon has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The number of frost days there went from about 75 to 39 per year over the period.
The hottest day of the period reached 32.1 °C (on 18 July 2022) and the coldest -22.7 °C (on 21 January 1940).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
BreconWales
- coords
- 51.95°, -3.39°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.2°C
Average daily high
11.2°C
Average daily low
5.1°C
Annual rainfall
1,089mm
Sunshine / day
7.8h
Mean relative humidity
87%
Average peak wind
19.7km/h
Seasonal range
11.6°C
Frost days (< 0 °C)
57 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
168 d/yr
Annual snowfall
38.4 cm
Average feels-like high
8.4 °C
Average feels-like low
2.1 °C
Average peak gust
45.0 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.41 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
32.1 °C
18 July 2022
Coldest day
-22.7 °C
21 January 1940
Wettest day
62 mm
27 December 1979
Windiest day
61.1 km/h
30 November 1954
Strongest gust
148.0 km/h
25 January 1990
Hottest feels-like
32.8 °C
18 July 2022
Coldest feels-like
-27.7 °C
21 January 1940
Snowiest day
33.0 cm
8 January 1982
Sunniest day
16.1 h
26 June 2018
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 5.3 °C | +0.4 °C | 136 mm | +34 mm |
| Feb | 6.1 °C | +0.8 °C | 90 mm | +6 mm |
| Mar | 10.5 °C | +2.9 °C | 20 mm | -63 mm |
| Apr | 13.9 °C | +3.5 °C | 75 mm | -3 mm |
| May | 16.4 °C | +2.9 °C | 47 mm | -46 mm |
| Jun | 18.2 °C | +2.0 °C | 90 mm | +10 mm |
| Jul | 19.9 °C | +2.1 °C | 58 mm | -24 mm |
| Aug | 19.6 °C | +2.1 °C | 54 mm | -36 mm |
| Sep | 15.2 °C | -0.1 °C | 168 mm | +82 mm |
| Oct | 12.2 °C | +0.3 °C | 116 mm | +14 mm |
| Nov | 9.6 °C | +1.6 °C | 194 mm | +95 mm |
| Dec | 7.6 °C | +1.7 °C | 179 mm | +70 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Brecon?
Brecon has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 8.2 °C and it receives 1,089 mm of precipitation per year.
What is the hottest day ever recorded in Brecon?
The hottest day measured in Brecon between 1940 and 2025 was 18 July 2022, reaching 32.1 °C.
What is the coldest day in Brecon?
The coldest day measured in Brecon between 1940 and 2025 was 21 January 1940, at -22.7 °C.
Does it snow in Brecon?
Yes. Brecon gets on average 38.4 cm of snow per year and has around 57 frost days.
Has the climate of Brecon warmed?
Yes: Brecon warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Brecon?
The wettest day measured in Brecon between 1940 and 2025 was 27 December 1979, with 62 mm of rain in 24 hours.
What was the windiest day in Brecon?
The windiest day measured in Brecon between 1940 and 2025 was 30 November 1954, with winds reaching 61.1 km/h.
What is the warmest month in Brecon?
The warmest month in Brecon is July (14.3 °C on average); the coldest is January (2.7 °C).
How much does it rain in Brecon?
Brecon receives on average 1,089 mm of precipitation per year, spread over about 168 rainy days.
Is it sunny in Brecon?
Brecon gets on average 7.8 hours of sunshine per day, roughly 2,847 hours per year over 1940-2025.
What is the biggest single-day snowfall in Brecon?
The heaviest 24-hour snowfall measured in Brecon between 1940 and 2025 was 8 January 1982, with 33.0 cm.
Are there tropical nights in Brecon?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Brecon.
What was the most extreme apparent temperature in Brecon?
In Brecon, between 1940 and 2025, the highest apparent temperature reached 32.8 °C on 18 July 2022, and the lowest was -27.7 °C on 21 January 1940.
Compare Brecon with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Brecon