Northam climate — normals and trends
Northam (United Kingdom) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 10.5 °C and it receives 872 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 (15.8 °C on average) and the coldest is February (5.7 °C). Rainfall peaks in November.
Northam averages 11 frost days, 0 hot days (≥ 30 °C) and 162 rainy days per year.
Northam has warmed by +1.3 °C between 1940 and 2025, or +0.15 °C per decade. This trend is statistically significant.
The number of frost days there went from about 18 to 4 per year over the period.
The hottest day of the period reached 31.9 °C (on 18 July 2022) and the coldest -8.4 °C (on 13 February 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
NorthamEngland
- coords
- 51.03°, -4.22°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.5°C
Average daily high
12.6°C
Average daily low
8.4°C
Annual rainfall
872mm
Sunshine / day
8.1h
Mean relative humidity
83%
Average peak wind
26.1km/h
Seasonal range
10.1°C
Frost days (< 0 °C)
11 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
162 d/yr
Annual snowfall
6.3 cm
Average feels-like high
9.8 °C
Average feels-like low
4.8 °C
Average peak gust
44.9 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
11.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.3 °C
since 1940
+0.2 °C per decade · r² = 0.35 · 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
31.9 °C
18 July 2022
Coldest day
-8.4 °C
13 February 1963
Wettest day
48 mm
14 June 1980
Windiest day
81.2 km/h
25 January 1990
Strongest gust
150.5 km/h
25 January 1990
Hottest feels-like
32.4 °C
18 July 2022
Coldest feels-like
-15.4 °C
12 January 1987
Snowiest day
10.4 cm
15 December 1950
Sunniest day
15.9 h
18 June 1944
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 | 8.0 °C | +0.4 °C | 116 mm | +30 mm |
| Feb | 8.5 °C | +0.9 °C | 74 mm | +6 mm |
| Mar | 11.2 °C | +2.0 °C | 14 mm | -51 mm |
| Apr | 14.6 °C | +3.4 °C | 91 mm | +36 mm |
| May | 16.2 °C | +2.3 °C | 33 mm | -29 mm |
| Jun | 18.2 °C | +1.9 °C | 92 mm | +35 mm |
| Jul | 19.4 °C | +1.5 °C | 49 mm | -12 mm |
| Aug | 20.2 °C | +2.0 °C | 47 mm | -21 mm |
| Sep | 16.6 °C | 0.0 °C | 132 mm | +61 mm |
| Oct | 14.2 °C | +0.3 °C | 95 mm | +6 mm |
| Nov | 12.0 °C | +1.4 °C | 158 mm | +62 mm |
| Dec | 9.8 °C | +1.1 °C | 149 mm | +54 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 Northam?
Northam has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 10.5 °C and it receives 872 mm of precipitation per year.
What is the hottest day ever recorded in Northam?
The hottest day measured in Northam between 1940 and 2025 was 18 July 2022, reaching 31.9 °C.
What is the coldest day in Northam?
The coldest day measured in Northam between 1940 and 2025 was 13 February 1963, at -8.4 °C.
Does it snow in Northam?
Yes. Northam gets on average 6.3 cm of snow per year and has around 11 frost days.
Has the climate of Northam warmed?
Yes: Northam warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Northam?
The wettest day measured in Northam between 1940 and 2025 was 14 June 1980, with 48 mm of rain in 24 hours.
What was the windiest day in Northam?
The windiest day measured in Northam between 1940 and 2025 was 25 January 1990, with winds reaching 81.2 km/h.
What is the warmest month in Northam?
The warmest month in Northam is August (15.8 °C on average); the coldest is February (5.7 °C).
How much does it rain in Northam?
Northam receives on average 872 mm of precipitation per year, spread over about 162 rainy days.
Is it sunny in Northam?
Northam 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 Northam?
The heaviest 24-hour snowfall measured in Northam between 1940 and 2025 was 15 December 1950, with 10.4 cm.
Are there tropical nights in Northam?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Northam.
What was the most extreme apparent temperature in Northam?
In Northam, between 1940 and 2025, the highest apparent temperature reached 32.4 °C on 18 July 2022, and the lowest was -15.4 °C on 12 January 1987.
Compare Northam with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Northam