Barry climate — normals and trends
Barry (United Kingdom) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.1 °C and it receives 940 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 (16.1 °C on average) and the coldest is January (4.8 °C). Rainfall peaks in December.
Barry averages 23 frost days, 0 hot days (≥ 30 °C) and 148 rainy days per year.
Barry has warmed by +1.5 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.
The number of frost days there went from about 34 to 12 per year over the period.
The hottest day of the period reached 31.6 °C (on 18 July 2022) and the coldest -16.6 °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
BarryWales
- coords
- 51.40°, -3.28°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.1°C
Average daily high
12.7°C
Average daily low
7.5°C
Annual rainfall
940mm
Sunshine / day
7.8h
Mean relative humidity
82%
Average peak wind
23.1km/h
Seasonal range
11.3°C
Frost days (< 0 °C)
23 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
148 d/yr
Annual snowfall
13.1 cm
Average feels-like high
9.9 °C
Average feels-like low
4.3 °C
Average peak gust
42.0 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.40 · 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
31.6 °C
18 July 2022
Coldest day
-16.6 °C
21 January 1940
Wettest day
61 mm
20 October 1944
Windiest day
73.1 km/h
25 January 1990
Strongest gust
150.5 km/h
25 January 1990
Hottest feels-like
32.4 °C
29 July 1948
Coldest feels-like
-22.0 °C
21 January 1940
Snowiest day
24.1 cm
8 January 1982
Sunniest day
16.0 h
14 June 1940
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 | 6.9 °C | +0.2 °C | 120 mm | +30 mm |
| Feb | 7.6 °C | +0.6 °C | 88 mm | +17 mm |
| Mar | 11.3 °C | +2.3 °C | 17 mm | -53 mm |
| Apr | 14.8 °C | +3.3 °C | 66 mm | +5 mm |
| May | 17.5 °C | +2.9 °C | 35 mm | -38 mm |
| Jun | 19.0 °C | +1.7 °C | 78 mm | +15 mm |
| Jul | 21.2 °C | +2.2 °C | 50 mm | -16 mm |
| Aug | 21.0 °C | +2.1 °C | 43 mm | -35 mm |
| Sep | 16.7 °C | -0.2 °C | 145 mm | +65 mm |
| Oct | 14.0 °C | +0.4 °C | 101 mm | +4 mm |
| Nov | 11.3 °C | +1.4 °C | 187 mm | +94 mm |
| Dec | 9.2 °C | +1.5 °C | 184 mm | +87 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 Barry?
Barry has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 10.1 °C and it receives 940 mm of precipitation per year.
What is the hottest day ever recorded in Barry?
The hottest day measured in Barry between 1940 and 2025 was 18 July 2022, reaching 31.6 °C.
What is the coldest day in Barry?
The coldest day measured in Barry between 1940 and 2025 was 21 January 1940, at -16.6 °C.
Does it snow in Barry?
Yes. Barry gets on average 13.1 cm of snow per year and has around 23 frost days.
Has the climate of Barry warmed?
Yes: Barry warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Barry?
The wettest day measured in Barry between 1940 and 2025 was 20 October 1944, with 61 mm of rain in 24 hours.
What was the windiest day in Barry?
The windiest day measured in Barry between 1940 and 2025 was 25 January 1990, with winds reaching 73.1 km/h.
What is the warmest month in Barry?
The warmest month in Barry is July (16.1 °C on average); the coldest is January (4.8 °C).
How much does it rain in Barry?
Barry receives on average 940 mm of precipitation per year, spread over about 148 rainy days.
Is it sunny in Barry?
Barry 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 Barry?
The heaviest 24-hour snowfall measured in Barry between 1940 and 2025 was 8 January 1982, with 24.1 cm.
Are there tropical nights in Barry?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Barry.
What was the most extreme apparent temperature in Barry?
In Barry, between 1940 and 2025, the highest apparent temperature reached 32.4 °C on 29 July 1948, and the lowest was -22.0 °C on 21 January 1940.
Compare Barry with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Barry