Sawston climate — normals and trends
Sawston (United Kingdom) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.0 °C and it receives 609 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 (17.0 °C on average) and the coldest is January (3.8 °C). Rainfall peaks in August.
Sawston averages 40 frost days, 1 hot days (≥ 30 °C) and 125 rainy days per year.
Sawston has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.
The number of frost days there went from about 57 to 23 per year over the period.
The hottest day of the period reached 37.8 °C (on 19 July 2022) and the coldest -13.4 °C (on 23 January 1963).
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
SawstonEngland
- coords
- 52.12°, 0.17°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.0°C
Average daily high
13.4°C
Average daily low
6.7°C
Annual rainfall
609mm
Sunshine / day
7.7h
Mean relative humidity
80%
Average peak wind
22.1km/h
Seasonal range
13.2°C
Frost days (< 0 °C)
40 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
125 d/yr
Annual snowfall
13.4 cm
Average feels-like high
10.4 °C
Average feels-like low
3.5 °C
Average peak gust
40.9 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
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.47 · 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
37.8 °C
19 July 2022
Coldest day
-13.4 °C
23 January 1963
Wettest day
49 mm
20 June 1973
Windiest day
67.9 km/h
16 October 1987
Strongest gust
125.3 km/h
18 January 2007
Hottest feels-like
37.1 °C
25 July 2019
Coldest feels-like
-18.2 °C
2 February 1956
Snowiest day
16.3 cm
4 March 1970
Sunniest day
16.0 h
30 May 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 | +0.1 °C | 60 mm | +12 mm |
| Feb | 7.4 °C | +0.6 °C | 47 mm | +7 mm |
| Mar | 12.5 °C | +3.0 °C | 16 mm | -29 mm |
| Apr | 15.9 °C | +3.6 °C | 28 mm | -21 mm |
| May | 18.5 °C | +2.9 °C | 22 mm | -35 mm |
| Jun | 23.4 °C | +4.6 °C | 30 mm | -26 mm |
| Jul | 23.4 °C | +2.3 °C | 68 mm | +13 mm |
| Aug | 23.0 °C | +2.0 °C | 29 mm | -29 mm |
| Sep | 18.9 °C | +0.6 °C | 38 mm | -12 mm |
| Oct | 14.5 °C | +0.3 °C | 55 mm | +3 mm |
| Nov | 11.1 °C | +1.6 °C | 101 mm | +49 mm |
| Dec | 9.3 °C | +2.2 °C | 37 mm | -12 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 Sawston?
Sawston has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 10.0 °C and it receives 609 mm of precipitation per year.
What is the hottest day ever recorded in Sawston?
The hottest day measured in Sawston between 1940 and 2025 was 19 July 2022, reaching 37.8 °C.
What is the coldest day in Sawston?
The coldest day measured in Sawston between 1940 and 2025 was 23 January 1963, at -13.4 °C.
Does it snow in Sawston?
Yes. Sawston gets on average 13.4 cm of snow per year and has around 40 frost days.
Has the climate of Sawston warmed?
Yes: Sawston warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Sawston?
The wettest day measured in Sawston between 1940 and 2025 was 20 June 1973, with 49 mm of rain in 24 hours.
What was the windiest day in Sawston?
The windiest day measured in Sawston between 1940 and 2025 was 16 October 1987, with winds reaching 67.9 km/h.
What is the warmest month in Sawston?
The warmest month in Sawston is July (17.0 °C on average); the coldest is January (3.8 °C).
How much does it rain in Sawston?
Sawston receives on average 609 mm of precipitation per year, spread over about 125 rainy days.
Is it sunny in Sawston?
Sawston gets on average 7.7 hours of sunshine per day, roughly 2,811 hours per year over 1940-2025.
What is the biggest single-day snowfall in Sawston?
The heaviest 24-hour snowfall measured in Sawston between 1940 and 2025 was 4 March 1970, with 16.3 cm.
Are there tropical nights in Sawston?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Sawston.
What was the most extreme apparent temperature in Sawston?
In Sawston, between 1940 and 2025, the highest apparent temperature reached 37.1 °C on 25 July 2019, and the lowest was -18.2 °C on 2 February 1956.
Compare Sawston with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Sawston