Blessington climate — normals and trends
Blessington (Ireland) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.5 °C and it receives 800 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 (15.3 °C on average) and the coldest is January (4.6 °C). Rainfall peaks in August.
Blessington averages 27 frost days, 0 hot days (≥ 30 °C) and 157 rainy days per year.
Blessington has warmed by +0.8 °C between 1940 and 2025, or +0.09 °C per decade. This trend is statistically significant.
The number of frost days there went from about 36 to 18 per year over the period.
The hottest day of the period reached 29.5 °C (on 18 July 2022) and the coldest -11.4 °C (on 4 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
BlessingtonLeinster
- coords
- 53.17°, -6.53°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.5°C
Average daily high
12.4°C
Average daily low
6.6°C
Annual rainfall
800mm
Sunshine / day
7.6h
Mean relative humidity
82%
Average peak wind
20.5km/h
Seasonal range
10.7°C
Frost days (< 0 °C)
27 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
157 d/yr
Annual snowfall
15.9 cm
Average feels-like high
9.7 °C
Average feels-like low
3.6 °C
Average peak gust
44.2 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.8 °C
since 1940
+0.1 °C per decade · r² = 0.18 · 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
29.5 °C
18 July 2022
Coldest day
-11.4 °C
4 February 1963
Wettest day
69 mm
29 June 1986
Windiest day
67.1 km/h
24 December 1997
Strongest gust
141.5 km/h
24 December 1997
Hottest feels-like
32.3 °C
13 July 1983
Coldest feels-like
-15.9 °C
2 January 1979
Snowiest day
31.2 cm
8 December 1954
Sunniest day
16.7 h
20 June 2025
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 | 6.8 °C | 0.0 °C | 75 mm | +7 mm |
| Feb | 8.4 °C | +1.1 °C | 63 mm | +8 mm |
| Mar | 11.3 °C | +2.1 °C | 19 mm | -40 mm |
| Apr | 14.2 °C | +2.7 °C | 92 mm | +32 mm |
| May | 16.3 °C | +2.0 °C | 50 mm | -21 mm |
| Jun | 18.4 °C | +1.3 °C | 80 mm | +15 mm |
| Jul | 20.0 °C | +1.4 °C | 88 mm | +18 mm |
| Aug | 19.6 °C | +1.3 °C | 34 mm | -40 mm |
| Sep | 15.9 °C | -0.3 °C | 106 mm | +38 mm |
| Oct | 13.1 °C | +0.1 °C | 93 mm | +21 mm |
| Nov | 10.4 °C | +1.1 °C | 122 mm | +55 mm |
| Dec | 8.9 °C | +1.3 °C | 79 mm | +6 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 Blessington?
Blessington has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.5 °C and it receives 800 mm of precipitation per year.
What is the hottest day ever recorded in Blessington?
The hottest day measured in Blessington between 1940 and 2025 was 18 July 2022, reaching 29.5 °C.
What is the coldest day in Blessington?
The coldest day measured in Blessington between 1940 and 2025 was 4 February 1963, at -11.4 °C.
Does it snow in Blessington?
Yes. Blessington gets on average 15.9 cm of snow per year and has around 27 frost days.
Has the climate of Blessington warmed?
Yes: Blessington warmed by +0.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Blessington?
The wettest day measured in Blessington between 1940 and 2025 was 29 June 1986, with 69 mm of rain in 24 hours.
What was the windiest day in Blessington?
The windiest day measured in Blessington between 1940 and 2025 was 24 December 1997, with winds reaching 67.1 km/h.
What is the warmest month in Blessington?
The warmest month in Blessington is July (15.3 °C on average); the coldest is January (4.6 °C).
How much does it rain in Blessington?
Blessington receives on average 800 mm of precipitation per year, spread over about 157 rainy days.
Is it sunny in Blessington?
Blessington gets on average 7.6 hours of sunshine per day, roughly 2,774 hours per year over 1940-2025.
What is the biggest single-day snowfall in Blessington?
The heaviest 24-hour snowfall measured in Blessington between 1940 and 2025 was 8 December 1954, with 31.2 cm.
Are there tropical nights in Blessington?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Blessington.
What was the most extreme apparent temperature in Blessington?
In Blessington, between 1940 and 2025, the highest apparent temperature reached 32.3 °C on 13 July 1983, and the lowest was -15.9 °C on 2 January 1979.
Compare Blessington with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Blessington