Aberystwyth climate — normals and trends
Aberystwyth (United Kingdom) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.4 °C and it receives 1,175 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 (15.1 °C on average) and the coldest is January (4.3 °C). Rainfall peaks in December.
Aberystwyth averages 32 frost days, 0 hot days (≥ 30 °C) and 184 rainy days per year.
Aberystwyth has warmed by +1.5 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.
The number of frost days there went from about 48 to 16 per year over the period.
The hottest day of the period reached 33.8 °C (on 18 July 2022) and the coldest -16.7 °C (on 12 December 1981).
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
AberystwythWales
- coords
- 52.42°, -4.08°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.4°C
Average daily high
12.1°C
Average daily low
6.6°C
Annual rainfall
1,175mm
Sunshine / day
7.1h
Mean relative humidity
83%
Average peak wind
20.7km/h
Seasonal range
10.8°C
Frost days (< 0 °C)
32 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
184 d/yr
Annual snowfall
16.4 cm
Average feels-like high
9.5 °C
Average feels-like low
3.6 °C
Average peak gust
45.1 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
9.7 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
33.8 °C
18 July 2022
Coldest day
-16.7 °C
12 December 1981
Wettest day
61 mm
6 August 1973
Windiest day
74.0 km/h
30 November 1954
Strongest gust
148.7 km/h
25 January 1990
Hottest feels-like
34.3 °C
29 July 1948
Coldest feels-like
-21.4 °C
12 December 1981
Snowiest day
26.6 cm
8 January 1982
Sunniest day
16.2 h
24 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 | 6.4 °C | +0.1 °C | 125 mm | +10 mm |
| Feb | 7.5 °C | +0.9 °C | 72 mm | -19 mm |
| Mar | 11.5 °C | +2.8 °C | 21 mm | -66 mm |
| Apr | 15.0 °C | +3.8 °C | 77 mm | +2 mm |
| May | 17.2 °C | +2.9 °C | 62 mm | -20 mm |
| Jun | 18.0 °C | +1.3 °C | 129 mm | +51 mm |
| Jul | 19.4 °C | +1.3 °C | 55 mm | -28 mm |
| Aug | 20.0 °C | +2.1 °C | 55 mm | -42 mm |
| Sep | 16.0 °C | 0.0 °C | 193 mm | +92 mm |
| Oct | 13.2 °C | +0.3 °C | 136 mm | +19 mm |
| Nov | 10.7 °C | +1.4 °C | 200 mm | +79 mm |
| Dec | 8.9 °C | +1.7 °C | 160 mm | +30 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 Aberystwyth?
Aberystwyth has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.4 °C and it receives 1,175 mm of precipitation per year.
What is the hottest day ever recorded in Aberystwyth?
The hottest day measured in Aberystwyth between 1940 and 2025 was 18 July 2022, reaching 33.8 °C.
What is the coldest day in Aberystwyth?
The coldest day measured in Aberystwyth between 1940 and 2025 was 12 December 1981, at -16.7 °C.
Does it snow in Aberystwyth?
Yes. Aberystwyth gets on average 16.4 cm of snow per year and has around 32 frost days.
Has the climate of Aberystwyth warmed?
Yes: Aberystwyth warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Aberystwyth?
The wettest day measured in Aberystwyth between 1940 and 2025 was 6 August 1973, with 61 mm of rain in 24 hours.
What was the windiest day in Aberystwyth?
The windiest day measured in Aberystwyth between 1940 and 2025 was 30 November 1954, with winds reaching 74.0 km/h.
What is the warmest month in Aberystwyth?
The warmest month in Aberystwyth is July (15.1 °C on average); the coldest is January (4.3 °C).
How much does it rain in Aberystwyth?
Aberystwyth receives on average 1,175 mm of precipitation per year, spread over about 184 rainy days.
Is it sunny in Aberystwyth?
Aberystwyth gets on average 7.1 hours of sunshine per day, roughly 2,592 hours per year over 1940-2025.
What is the biggest single-day snowfall in Aberystwyth?
The heaviest 24-hour snowfall measured in Aberystwyth between 1940 and 2025 was 8 January 1982, with 26.6 cm.
Are there tropical nights in Aberystwyth?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Aberystwyth.
What was the most extreme apparent temperature in Aberystwyth?
In Aberystwyth, between 1940 and 2025, the highest apparent temperature reached 34.3 °C on 29 July 1948, and the lowest was -21.4 °C on 12 December 1981.
Compare Aberystwyth with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Aberystwyth