Leiston climate — normals and trends
Leiston (United Kingdom) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.2 °C and it receives 614 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 August (16.8 °C on average) and the coldest is February (4.5 °C). Rainfall peaks in November.
Leiston averages 15 frost days, 0 hot days (≥ 30 °C) and 128 rainy days per year.
Leiston has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.
The number of frost days there went from about 25 to 5 per year over the period.
The hottest day of the period reached 28.9 °C (on 19 July 2022) and the coldest -9.9 °C (on 24 February 1947).
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
LeistonEngland
- coords
- 52.21°, 1.58°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.2°C
Average daily high
12.3°C
Average daily low
8.1°C
Annual rainfall
614mm
Sunshine / day
8.3h
Mean relative humidity
81%
Average peak wind
26.2km/h
Seasonal range
12.3°C
Frost days (< 0 °C)
15 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
128 d/yr
Annual snowfall
10.7 cm
Average feels-like high
9.2 °C
Average feels-like low
4.4 °C
Average peak gust
43.0 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
11.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.44 · 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
28.9 °C
19 July 2022
Coldest day
-9.9 °C
24 February 1947
Wettest day
61 mm
29 July 1969
Windiest day
82.8 km/h
16 October 1987
Strongest gust
141.1 km/h
16 October 1987
Hottest feels-like
30.6 °C
10 August 2003
Coldest feels-like
-15.0 °C
24 February 1947
Snowiest day
8.9 cm
30 December 1962
Sunniest day
16.0 h
3 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 | 6.2 °C | 0.0 °C | 52 mm | +0 mm |
| Feb | 6.7 °C | +0.4 °C | 54 mm | +11 mm |
| Mar | 9.8 °C | +1.8 °C | 7 mm | -37 mm |
| Apr | 12.3 °C | +2.0 °C | 11 mm | -29 mm |
| May | 15.4 °C | +2.0 °C | 31 mm | -16 mm |
| Jun | 20.3 °C | +3.6 °C | 42 mm | -5 mm |
| Jul | 21.2 °C | +2.2 °C | 86 mm | +31 mm |
| Aug | 20.6 °C | +1.2 °C | 34 mm | -23 mm |
| Sep | 18.0 °C | +0.7 °C | 47 mm | -5 mm |
| Oct | 14.3 °C | +0.3 °C | 82 mm | +22 mm |
| Nov | 11.0 °C | +1.1 °C | 104 mm | +41 mm |
| Dec | 9.3 °C | +1.8 °C | 41 mm | -15 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 Leiston?
Leiston has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 10.2 °C and it receives 614 mm of precipitation per year.
What is the hottest day ever recorded in Leiston?
The hottest day measured in Leiston between 1940 and 2025 was 19 July 2022, reaching 28.9 °C.
What is the coldest day in Leiston?
The coldest day measured in Leiston between 1940 and 2025 was 24 February 1947, at -9.9 °C.
Does it snow in Leiston?
Yes. Leiston gets on average 10.7 cm of snow per year and has around 15 frost days.
Has the climate of Leiston warmed?
Yes: Leiston warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Leiston?
The wettest day measured in Leiston between 1940 and 2025 was 29 July 1969, with 61 mm of rain in 24 hours.
What was the windiest day in Leiston?
The windiest day measured in Leiston between 1940 and 2025 was 16 October 1987, with winds reaching 82.8 km/h.
What is the warmest month in Leiston?
The warmest month in Leiston is August (16.8 °C on average); the coldest is February (4.5 °C).
How much does it rain in Leiston?
Leiston receives on average 614 mm of precipitation per year, spread over about 128 rainy days.
Is it sunny in Leiston?
Leiston gets on average 8.3 hours of sunshine per day, roughly 3,030 hours per year over 1940-2025.
What is the biggest single-day snowfall in Leiston?
The heaviest 24-hour snowfall measured in Leiston between 1940 and 2025 was 30 December 1962, with 8.9 cm.
Are there tropical nights in Leiston?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Leiston.
What was the most extreme apparent temperature in Leiston?
In Leiston, between 1940 and 2025, the highest apparent temperature reached 30.6 °C on 10 August 2003, and the lowest was -15.0 °C on 24 February 1947.
Compare Leiston with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Leiston