Kilmarnock climate — normals and trends
Kilmarnock (United Kingdom) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.7 °C and it receives 1,335 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 (13.9 °C on average) and the coldest is January (4.2 °C). Rainfall peaks in December.
Kilmarnock averages 22 frost days, 0 hot days (≥ 30 °C) and 199 rainy days per year.
Kilmarnock has warmed by +1.4 °C between 1940 and 2025, or +0.16 °C per decade. This trend is statistically significant.
The number of frost days there went from about 35 to 9 per year over the period.
The hottest day of the period reached 27.2 °C (on 28 June 1995) and the coldest -11.1 °C (on 27 December 1995).
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
KilmarnockScotland
- coords
- 55.61°, -4.50°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.7°C
Average daily high
10.8°C
Average daily low
6.7°C
Annual rainfall
1,335mm
Sunshine / day
7.1h
Mean relative humidity
83%
Average peak wind
25.0km/h
Seasonal range
9.7°C
Frost days (< 0 °C)
22 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
199 d/yr
Annual snowfall
33.0 cm
Average feels-like high
7.5 °C
Average feels-like low
2.9 °C
Average peak gust
44.3 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
9.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.4 °C
since 1940
+0.2 °C per decade · r² = 0.42 · 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
27.2 °C
28 June 1995
Coldest day
-11.1 °C
27 December 1995
Wettest day
60 mm
10 August 2004
Windiest day
81.7 km/h
27 December 1998
Strongest gust
161.6 km/h
27 December 1998
Hottest feels-like
29.3 °C
29 July 1948
Coldest feels-like
-15.6 °C
28 December 1995
Snowiest day
13.1 cm
29 January 1945
Sunniest day
17.0 h
24 June 1942
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 | 6.1 °C | +0.3 °C | 77 mm | -57 mm |
| Feb | 7.0 °C | +1.1 °C | 89 mm | -17 mm |
| Mar | 9.9 °C | +2.5 °C | 58 mm | -41 mm |
| Apr | 12.8 °C | +3.3 °C | 45 mm | -34 mm |
| May | 15.1 °C | +2.7 °C | 84 mm | +6 mm |
| Jun | 15.5 °C | +0.8 °C | 132 mm | +50 mm |
| Jul | 17.5 °C | +1.5 °C | 112 mm | +17 mm |
| Aug | 17.8 °C | +1.8 °C | 94 mm | -16 mm |
| Sep | 14.8 °C | +0.5 °C | 129 mm | +7 mm |
| Oct | 12.0 °C | +0.3 °C | 191 mm | +50 mm |
| Nov | 9.4 °C | +0.9 °C | 195 mm | +55 mm |
| Dec | 8.1 °C | +1.3 °C | 169 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 Kilmarnock?
Kilmarnock has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 8.7 °C and it receives 1,335 mm of precipitation per year.
What is the hottest day ever recorded in Kilmarnock?
The hottest day measured in Kilmarnock between 1940 and 2025 was 28 June 1995, reaching 27.2 °C.
What is the coldest day in Kilmarnock?
The coldest day measured in Kilmarnock between 1940 and 2025 was 27 December 1995, at -11.1 °C.
Does it snow in Kilmarnock?
Yes. Kilmarnock gets on average 33.0 cm of snow per year and has around 22 frost days.
Has the climate of Kilmarnock warmed?
Yes: Kilmarnock warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Kilmarnock?
The wettest day measured in Kilmarnock between 1940 and 2025 was 10 August 2004, with 60 mm of rain in 24 hours.
What was the windiest day in Kilmarnock?
The windiest day measured in Kilmarnock between 1940 and 2025 was 27 December 1998, with winds reaching 81.7 km/h.
What is the warmest month in Kilmarnock?
The warmest month in Kilmarnock is August (13.9 °C on average); the coldest is January (4.2 °C).
How much does it rain in Kilmarnock?
Kilmarnock receives on average 1,335 mm of precipitation per year, spread over about 199 rainy days.
Is it sunny in Kilmarnock?
Kilmarnock gets on average 7.1 hours of sunshine per day, roughly 2,592 hours per year over 1940-2025.
What is the biggest single-day snowfall in Kilmarnock?
The heaviest 24-hour snowfall measured in Kilmarnock between 1940 and 2025 was 29 January 1945, with 13.1 cm.
Are there tropical nights in Kilmarnock?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Kilmarnock.
What was the most extreme apparent temperature in Kilmarnock?
In Kilmarnock, between 1940 and 2025, the highest apparent temperature reached 29.3 °C on 29 July 1948, and the lowest was -15.6 °C on 28 December 1995.
Compare Kilmarnock with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Kilmarnock