Trim climate — normals and trends
Trim (Ireland) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.8 °C and it receives 746 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 (15.6 °C on average) and the coldest is January (4.9 °C). Rainfall peaks in December.
Trim averages 27 frost days, 0 hot days (≥ 30 °C) and 145 rainy days per year.
Trim has warmed by +0.7 °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 30.9 °C (on 18 July 2022) and the coldest -15.4 °C (on 12 January 1982).
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
TrimLeinster
- coords
- 53.55°, -6.79°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.8°C
Average daily high
12.9°C
Average daily low
6.8°C
Annual rainfall
746mm
Sunshine / day
7.0h
Mean relative humidity
81%
Average peak wind
19.9km/h
Seasonal range
10.7°C
Frost days (< 0 °C)
27 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
145 d/yr
Annual snowfall
11.6 cm
Average feels-like high
10.2 °C
Average feels-like low
3.9 °C
Average peak gust
41.9 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
9.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.7 °C
since 1940
+0.1 °C per decade · r² = 0.16 · 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
30.9 °C
18 July 2022
Coldest day
-15.4 °C
12 January 1982
Wettest day
56 mm
8 December 1954
Windiest day
63.7 km/h
16 September 1961
Strongest gust
141.1 km/h
24 December 1997
Hottest feels-like
33.2 °C
13 July 1983
Coldest feels-like
-19.6 °C
12 January 1982
Snowiest day
32.8 cm
8 December 1954
Sunniest day
16.8 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 | 7.2 °C | 0.0 °C | 66 mm | +1 mm |
| Feb | 8.9 °C | +1.1 °C | 61 mm | +9 mm |
| Mar | 11.7 °C | +1.9 °C | 19 mm | -37 mm |
| Apr | 14.9 °C | +2.9 °C | 95 mm | +40 mm |
| May | 17.2 °C | +2.3 °C | 42 mm | -22 mm |
| Jun | 18.8 °C | +1.1 °C | 68 mm | +8 mm |
| Jul | 20.5 °C | +1.4 °C | 67 mm | +6 mm |
| Aug | 20.1 °C | +1.4 °C | 34 mm | -36 mm |
| Sep | 16.3 °C | -0.3 °C | 89 mm | +26 mm |
| Oct | 13.4 °C | 0.0 °C | 92 mm | +24 mm |
| Nov | 10.7 °C | +1.0 °C | 115 mm | +51 mm |
| Dec | 9.2 °C | +1.3 °C | 71 mm | +1 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 Trim?
Trim has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.8 °C and it receives 746 mm of precipitation per year.
What is the hottest day ever recorded in Trim?
The hottest day measured in Trim between 1940 and 2025 was 18 July 2022, reaching 30.9 °C.
What is the coldest day in Trim?
The coldest day measured in Trim between 1940 and 2025 was 12 January 1982, at -15.4 °C.
Does it snow in Trim?
Yes. Trim gets on average 11.6 cm of snow per year and has around 27 frost days.
Has the climate of Trim warmed?
Yes: Trim warmed by +0.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Trim?
The wettest day measured in Trim between 1940 and 2025 was 8 December 1954, with 56 mm of rain in 24 hours.
What was the windiest day in Trim?
The windiest day measured in Trim between 1940 and 2025 was 16 September 1961, with winds reaching 63.7 km/h.
What is the warmest month in Trim?
The warmest month in Trim is July (15.6 °C on average); the coldest is January (4.9 °C).
How much does it rain in Trim?
Trim receives on average 746 mm of precipitation per year, spread over about 145 rainy days.
Is it sunny in Trim?
Trim 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 Trim?
The heaviest 24-hour snowfall measured in Trim between 1940 and 2025 was 8 December 1954, with 32.8 cm.
Are there tropical nights in Trim?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Trim.
What was the most extreme apparent temperature in Trim?
In Trim, between 1940 and 2025, the highest apparent temperature reached 33.2 °C on 13 July 1983, and the lowest was -19.6 °C on 12 January 1982.
Compare Trim with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Trim