Witham climate — normals and trends
Witham (United Kingdom) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.4 °C and it receives 578 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 (4.6 °C). Rainfall peaks in November.
Witham averages 20 frost days, 0 hot days (≥ 30 °C) and 121 rainy days per year.
Witham has warmed by +1.7 °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 32 to 8 per year over the period.
The hottest day of the period reached 32.0 °C (on 19 July 2022) and the coldest -9.6 °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
WithamEngland
- coords
- 51.80°, 0.64°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.4°C
Average daily high
13.0°C
Average daily low
7.8°C
Annual rainfall
578mm
Sunshine / day
8.1h
Mean relative humidity
81%
Average peak wind
24.1km/h
Seasonal range
12.4°C
Frost days (< 0 °C)
20 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
121 d/yr
Annual snowfall
10.6 cm
Average feels-like high
10.1 °C
Average feels-like low
4.5 °C
Average peak gust
42.0 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
11.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.47 · 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
32.0 °C
19 July 2022
Coldest day
-9.6 °C
24 February 1947
Wettest day
54 mm
3 September 1965
Windiest day
77.9 km/h
16 October 1987
Strongest gust
130.3 km/h
16 October 1987
Hottest feels-like
33.7 °C
25 July 2019
Coldest feels-like
-14.6 °C
24 February 1947
Snowiest day
15.9 cm
4 March 1970
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 | 6.3 °C | -0.1 °C | 63 mm | +13 mm |
| Feb | 7.1 °C | +0.3 °C | 50 mm | +8 mm |
| Mar | 11.1 °C | +2.2 °C | 12 mm | -30 mm |
| Apr | 13.8 °C | +2.3 °C | 25 mm | -17 mm |
| May | 17.0 °C | +2.2 °C | 23 mm | -25 mm |
| Jun | 21.8 °C | +3.8 °C | 38 mm | -9 mm |
| Jul | 22.6 °C | +2.4 °C | 70 mm | +21 mm |
| Aug | 21.9 °C | +1.7 °C | 25 mm | -26 mm |
| Sep | 18.5 °C | +0.6 °C | 36 mm | -10 mm |
| Oct | 14.5 °C | +0.3 °C | 65 mm | +11 mm |
| Nov | 11.1 °C | +1.2 °C | 81 mm | +25 mm |
| Dec | 9.4 °C | +1.8 °C | 41 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 Witham?
Witham has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 10.4 °C and it receives 578 mm of precipitation per year.
What is the hottest day ever recorded in Witham?
The hottest day measured in Witham between 1940 and 2025 was 19 July 2022, reaching 32.0 °C.
What is the coldest day in Witham?
The coldest day measured in Witham between 1940 and 2025 was 24 February 1947, at -9.6 °C.
Does it snow in Witham?
Yes. Witham gets on average 10.6 cm of snow per year and has around 20 frost days.
Has the climate of Witham warmed?
Yes: Witham warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Witham?
The wettest day measured in Witham between 1940 and 2025 was 3 September 1965, with 54 mm of rain in 24 hours.
What was the windiest day in Witham?
The windiest day measured in Witham between 1940 and 2025 was 16 October 1987, with winds reaching 77.9 km/h.
What is the warmest month in Witham?
The warmest month in Witham is July (17.0 °C on average); the coldest is January (4.6 °C).
How much does it rain in Witham?
Witham receives on average 578 mm of precipitation per year, spread over about 121 rainy days.
Is it sunny in Witham?
Witham gets on average 8.1 hours of sunshine per day, roughly 2,957 hours per year over 1940-2025.
What is the biggest single-day snowfall in Witham?
The heaviest 24-hour snowfall measured in Witham between 1940 and 2025 was 4 March 1970, with 15.9 cm.
Are there tropical nights in Witham?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Witham.
What was the most extreme apparent temperature in Witham?
In Witham, between 1940 and 2025, the highest apparent temperature reached 33.7 °C on 25 July 2019, and the lowest was -14.6 °C on 24 February 1947.
Compare Witham with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Witham