East Grinstead climate — normals and trends
East Grinstead (United Kingdom) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.2 °C and it receives 672 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 (16.8 °C on average) and the coldest is January (4.3 °C). Rainfall peaks in November.
East Grinstead averages 35 frost days, 1 hot days (≥ 30 °C) and 126 rainy days per year.
East Grinstead 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 50 to 20 per year over the period.
The hottest day of the period reached 35.3 °C (on 19 July 2022) and the coldest -16.1 °C (on 12 January 1987).
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
East GrinsteadEngland
- coords
- 51.12°, -0.01°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.2°C
Average daily high
13.3°C
Average daily low
7.0°C
Annual rainfall
672mm
Sunshine / day
8.1h
Mean relative humidity
81%
Average peak wind
22.6km/h
Seasonal range
12.5°C
Frost days (< 0 °C)
35 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
126 d/yr
Annual snowfall
10.0 cm
Average feels-like high
10.5 °C
Average feels-like low
3.9 °C
Average peak gust
43.1 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
11.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.44 · 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
35.3 °C
19 July 2022
Coldest day
-16.1 °C
12 January 1987
Wettest day
42 mm
5 September 1974
Windiest day
81.1 km/h
16 October 1987
Strongest gust
144.7 km/h
30 October 2000
Hottest feels-like
36.1 °C
19 July 2022
Coldest feels-like
-21.0 °C
12 January 1987
Snowiest day
14.1 cm
9 January 1968
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 | 6.7 °C | +0.2 °C | 103 mm | +42 mm |
| Feb | 7.4 °C | +0.5 °C | 50 mm | +0 mm |
| Mar | 11.9 °C | +2.6 °C | 16 mm | -33 mm |
| Apr | 15.8 °C | +3.7 °C | 27 mm | -22 mm |
| May | 17.8 °C | +2.4 °C | 29 mm | -26 mm |
| Jun | 21.8 °C | +3.3 °C | 31 mm | -18 mm |
| Jul | 22.9 °C | +2.4 °C | 73 mm | +22 mm |
| Aug | 22.0 °C | +1.6 °C | 25 mm | -30 mm |
| Sep | 18.1 °C | +0.1 °C | 61 mm | +8 mm |
| Oct | 14.7 °C | +0.4 °C | 76 mm | +11 mm |
| Nov | 11.4 °C | +1.4 °C | 86 mm | +15 mm |
| Dec | 9.6 °C | +2.0 °C | 71 mm | +6 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 East Grinstead?
East Grinstead has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 10.2 °C and it receives 672 mm of precipitation per year.
What is the hottest day ever recorded in East Grinstead?
The hottest day measured in East Grinstead between 1940 and 2025 was 19 July 2022, reaching 35.3 °C.
What is the coldest day in East Grinstead?
The coldest day measured in East Grinstead between 1940 and 2025 was 12 January 1987, at -16.1 °C.
Does it snow in East Grinstead?
Yes. East Grinstead gets on average 10.0 cm of snow per year and has around 35 frost days.
Has the climate of East Grinstead warmed?
Yes: East Grinstead warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in East Grinstead?
The wettest day measured in East Grinstead between 1940 and 2025 was 5 September 1974, with 42 mm of rain in 24 hours.
What was the windiest day in East Grinstead?
The windiest day measured in East Grinstead between 1940 and 2025 was 16 October 1987, with winds reaching 81.1 km/h.
What is the warmest month in East Grinstead?
The warmest month in East Grinstead is July (16.8 °C on average); the coldest is January (4.3 °C).
How much does it rain in East Grinstead?
East Grinstead receives on average 672 mm of precipitation per year, spread over about 126 rainy days.
Is it sunny in East Grinstead?
East Grinstead 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 East Grinstead?
The heaviest 24-hour snowfall measured in East Grinstead between 1940 and 2025 was 9 January 1968, with 14.1 cm.
Are there tropical nights in East Grinstead?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in East Grinstead.
What was the most extreme apparent temperature in East Grinstead?
In East Grinstead, between 1940 and 2025, the highest apparent temperature reached 36.1 °C on 19 July 2022, and the lowest was -21.0 °C on 12 January 1987.
Compare East Grinstead with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around East Grinstead