Caister-on-Sea climate — normals and trends
Caister-on-Sea (United Kingdom) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.1 °C and it receives 679 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 (16.4 °C on average) and the coldest is February (4.7 °C). Rainfall peaks in November.
Caister-on-Sea averages 4 frost days, 0 hot days (≥ 30 °C) and 135 rainy days per year.
Caister-on-Sea has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The number of frost days there went from about 9 to 0 per year over the period.
The hottest day of the period reached 24.1 °C (on 24 July 2019) and the coldest -5.9 °C (on 25 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
Caister-on-SeaEngland
- coords
- 52.65°, 1.73°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.1°C
Average daily high
11.3°C
Average daily low
9.0°C
Annual rainfall
679mm
Sunshine / day
8.5h
Mean relative humidity
82%
Average peak wind
31.5km/h
Seasonal range
11.7°C
Frost days (< 0 °C)
4 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
135 d/yr
Annual snowfall
9.8 cm
Average feels-like high
8.0 °C
Average feels-like low
4.4 °C
Average peak gust
43.6 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
11.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.43 · 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
24.1 °C
24 July 2019
Coldest day
-5.9 °C
25 January 1963
Wettest day
68 mm
29 July 1969
Windiest day
87.9 km/h
16 October 1987
Strongest gust
137.5 km/h
16 October 1987
Hottest feels-like
25.7 °C
24 July 2019
Coldest feels-like
-14.3 °C
31 January 1956
Snowiest day
8.9 cm
15 February 1979
Sunniest day
16.0 h
4 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 | 6.5 °C | +0.3 °C | 63 mm | +4 mm |
| Feb | 6.3 °C | +0.5 °C | 54 mm | +5 mm |
| Mar | 7.9 °C | +1.0 °C | 5 mm | -43 mm |
| Apr | 10.0 °C | +1.4 °C | 11 mm | -29 mm |
| May | 13.1 °C | +1.7 °C | 41 mm | -5 mm |
| Jun | 17.8 °C | +3.2 °C | 46 mm | -2 mm |
| Jul | 18.9 °C | +2.0 °C | 57 mm | +0 mm |
| Aug | 19.1 °C | +1.5 °C | 37 mm | -22 mm |
| Sep | 17.5 °C | +1.1 °C | 49 mm | -11 mm |
| Oct | 14.3 °C | +0.6 °C | 97 mm | +27 mm |
| Nov | 11.1 °C | +1.0 °C | 134 mm | +57 mm |
| Dec | 9.4 °C | +1.7 °C | 48 mm | -19 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 Caister-on-Sea?
Caister-on-Sea has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 10.1 °C and it receives 679 mm of precipitation per year.
What is the hottest day ever recorded in Caister-on-Sea?
The hottest day measured in Caister-on-Sea between 1940 and 2025 was 24 July 2019, reaching 24.1 °C.
What is the coldest day in Caister-on-Sea?
The coldest day measured in Caister-on-Sea between 1940 and 2025 was 25 January 1963, at -5.9 °C.
Does it snow in Caister-on-Sea?
Yes. Caister-on-Sea gets on average 9.8 cm of snow per year and has around 4 frost days.
Has the climate of Caister-on-Sea warmed?
Yes: Caister-on-Sea warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Caister-on-Sea?
The wettest day measured in Caister-on-Sea between 1940 and 2025 was 29 July 1969, with 68 mm of rain in 24 hours.
What was the windiest day in Caister-on-Sea?
The windiest day measured in Caister-on-Sea between 1940 and 2025 was 16 October 1987, with winds reaching 87.9 km/h.
What is the warmest month in Caister-on-Sea?
The warmest month in Caister-on-Sea is August (16.4 °C on average); the coldest is February (4.7 °C).
How much does it rain in Caister-on-Sea?
Caister-on-Sea receives on average 679 mm of precipitation per year, spread over about 135 rainy days.
Is it sunny in Caister-on-Sea?
Caister-on-Sea gets on average 8.5 hours of sunshine per day, roughly 3,103 hours per year over 1940-2025.
What is the biggest single-day snowfall in Caister-on-Sea?
The heaviest 24-hour snowfall measured in Caister-on-Sea between 1940 and 2025 was 15 February 1979, with 8.9 cm.
Are there tropical nights in Caister-on-Sea?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Caister-on-Sea.
What was the most extreme apparent temperature in Caister-on-Sea?
In Caister-on-Sea, between 1940 and 2025, the highest apparent temperature reached 25.7 °C on 24 July 2019, and the lowest was -14.3 °C on 31 January 1956.
Compare Caister-on-Sea with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Caister-on-Sea