Annan climate — normals and trends
Annan (United Kingdom) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.0 °C and it receives 955 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 (15.1 °C on average) and the coldest is January (3.6 °C). Rainfall peaks in December.
Annan averages 51 frost days, 0 hot days (≥ 30 °C) and 164 rainy days per year.
Annan 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 69 to 33 per year over the period.
The hottest day of the period reached 31.7 °C (on 19 July 2022) and the coldest -19.2 °C (on 13 January 1979).
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
AnnanScotland
- coords
- 54.99°, -3.26°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.0°C
Average daily high
12.1°C
Average daily low
5.8°C
Annual rainfall
955mm
Sunshine / day
7.0h
Mean relative humidity
82%
Average peak wind
20.2km/h
Seasonal range
11.5°C
Frost days (< 0 °C)
51 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
164 d/yr
Annual snowfall
23.6 cm
Average feels-like high
9.3 °C
Average feels-like low
2.8 °C
Average peak gust
39.6 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
9.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.41 · 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
31.7 °C
19 July 2022
Coldest day
-19.2 °C
13 January 1979
Wettest day
67 mm
10 August 2004
Windiest day
64.7 km/h
26 December 1998
Strongest gust
125.3 km/h
13 January 1984
Hottest feels-like
33.9 °C
29 July 1948
Coldest feels-like
-23.4 °C
13 January 1979
Snowiest day
17.3 cm
24 April 1981
Sunniest day
16.8 h
26 June 1995
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 | 5.9 °C | 0.0 °C | 58 mm | -29 mm |
| Feb | 7.5 °C | +1.0 °C | 61 mm | -11 mm |
| Mar | 11.5 °C | +2.9 °C | 30 mm | -40 mm |
| Apr | 14.7 °C | +3.4 °C | 47 mm | -18 mm |
| May | 17.7 °C | +3.1 °C | 56 mm | -15 mm |
| Jun | 18.0 °C | +0.8 °C | 99 mm | +29 mm |
| Jul | 20.1 °C | +1.5 °C | 96 mm | +17 mm |
| Aug | 20.0 °C | +1.8 °C | 58 mm | -29 mm |
| Sep | 16.2 °C | +0.3 °C | 129 mm | +46 mm |
| Oct | 12.9 °C | +0.2 °C | 76 mm | -17 mm |
| Nov | 9.9 °C | +1.1 °C | 168 mm | +83 mm |
| Dec | 8.6 °C | +1.9 °C | 145 mm | +52 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 Annan?
Annan has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.0 °C and it receives 955 mm of precipitation per year.
What is the hottest day ever recorded in Annan?
The hottest day measured in Annan between 1940 and 2025 was 19 July 2022, reaching 31.7 °C.
What is the coldest day in Annan?
The coldest day measured in Annan between 1940 and 2025 was 13 January 1979, at -19.2 °C.
Does it snow in Annan?
Yes. Annan gets on average 23.6 cm of snow per year and has around 51 frost days.
Has the climate of Annan warmed?
Yes: Annan warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Annan?
The wettest day measured in Annan between 1940 and 2025 was 10 August 2004, with 67 mm of rain in 24 hours.
What was the windiest day in Annan?
The windiest day measured in Annan between 1940 and 2025 was 26 December 1998, with winds reaching 64.7 km/h.
What is the warmest month in Annan?
The warmest month in Annan is July (15.1 °C on average); the coldest is January (3.6 °C).
How much does it rain in Annan?
Annan receives on average 955 mm of precipitation per year, spread over about 164 rainy days.
Is it sunny in Annan?
Annan gets on average 7.0 hours of sunshine per day, roughly 2,555 hours per year over 1940-2025.
What is the biggest single-day snowfall in Annan?
The heaviest 24-hour snowfall measured in Annan between 1940 and 2025 was 24 April 1981, with 17.3 cm.
Are there tropical nights in Annan?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Annan.
What was the most extreme apparent temperature in Annan?
In Annan, between 1940 and 2025, the highest apparent temperature reached 33.9 °C on 29 July 1948, and the lowest was -23.4 °C on 13 January 1979.
Compare Annan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Annan