Isle of Bute climate — normals and trends
Isle of Bute (United Kingdom) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.1 °C and it receives 1,412 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 (14.0 °C on average) and the coldest is February (4.7 °C). Rainfall peaks in December.
Isle of Bute averages 14 frost days, 0 hot days (≥ 30 °C) and 199 rainy days per year.
Isle of Bute 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 25 to 3 per year over the period.
The hottest day of the period reached 25.7 °C (on 28 June 1995) and the coldest -10.8 °C (on 26 January 1945).
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
Isle of ButeScotland
- coords
- 55.84°, -5.06°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.1°C
Average daily high
10.8°C
Average daily low
7.3°C
Annual rainfall
1,412mm
Sunshine / day
7.3h
Mean relative humidity
83%
Average peak wind
27.7km/h
Seasonal range
9.3°C
Frost days (< 0 °C)
14 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
199 d/yr
Annual snowfall
24.1 cm
Average feels-like high
7.4 °C
Average feels-like low
3.2 °C
Average peak gust
48.2 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
9.4 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
25.7 °C
28 June 1995
Coldest day
-10.8 °C
26 January 1945
Wettest day
69 mm
10 August 2004
Windiest day
81.0 km/h
26 December 1998
Strongest gust
154.8 km/h
13 February 1989
Hottest feels-like
27.0 °C
5 June 1982
Coldest feels-like
-15.9 °C
26 January 1945
Snowiest day
16.0 cm
29 January 1945
Sunniest day
17.0 h
16 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 | 6.6 °C | +0.3 °C | 87 mm | -57 mm |
| Feb | 7.3 °C | +1.0 °C | 110 mm | -0 mm |
| Mar | 9.9 °C | +2.4 °C | 63 mm | -43 mm |
| Apr | 12.2 °C | +2.8 °C | 57 mm | -24 mm |
| May | 14.9 °C | +2.7 °C | 79 mm | -2 mm |
| Jun | 15.1 °C | +0.7 °C | 147 mm | +65 mm |
| Jul | 17.2 °C | +1.5 °C | 89 mm | -6 mm |
| Aug | 17.4 °C | +1.6 °C | 110 mm | -5 mm |
| Sep | 14.8 °C | +0.5 °C | 165 mm | +34 mm |
| Oct | 12.3 °C | +0.4 °C | 210 mm | +53 mm |
| Nov | 9.9 °C | +1.0 °C | 218 mm | +67 mm |
| Dec | 8.5 °C | +1.2 °C | 224 mm | +65 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 Isle of Bute?
Isle of Bute has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.1 °C and it receives 1,412 mm of precipitation per year.
What is the hottest day ever recorded in Isle of Bute?
The hottest day measured in Isle of Bute between 1940 and 2025 was 28 June 1995, reaching 25.7 °C.
What is the coldest day in Isle of Bute?
The coldest day measured in Isle of Bute between 1940 and 2025 was 26 January 1945, at -10.8 °C.
Does it snow in Isle of Bute?
Yes. Isle of Bute gets on average 24.1 cm of snow per year and has around 14 frost days.
Has the climate of Isle of Bute warmed?
Yes: Isle of Bute warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Isle of Bute?
The wettest day measured in Isle of Bute between 1940 and 2025 was 10 August 2004, with 69 mm of rain in 24 hours.
What was the windiest day in Isle of Bute?
The windiest day measured in Isle of Bute between 1940 and 2025 was 26 December 1998, with winds reaching 81.0 km/h.
What is the warmest month in Isle of Bute?
The warmest month in Isle of Bute is August (14.0 °C on average); the coldest is February (4.7 °C).
How much does it rain in Isle of Bute?
Isle of Bute receives on average 1,412 mm of precipitation per year, spread over about 199 rainy days.
Is it sunny in Isle of Bute?
Isle of Bute gets on average 7.3 hours of sunshine per day, roughly 2,665 hours per year over 1940-2025.
What is the biggest single-day snowfall in Isle of Bute?
The heaviest 24-hour snowfall measured in Isle of Bute between 1940 and 2025 was 29 January 1945, with 16.0 cm.
Are there tropical nights in Isle of Bute?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Isle of Bute.
What was the most extreme apparent temperature in Isle of Bute?
In Isle of Bute, between 1940 and 2025, the highest apparent temperature reached 27.0 °C on 5 June 1982, and the lowest was -15.9 °C on 26 January 1945.
Compare Isle of Bute with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Isle of Bute