New Ross climate — normals and trends
New Ross (Ireland) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.8 °C and it receives 808 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 (15.4 °C on average) and the coldest is January (5.0 °C). Rainfall peaks in October.
New Ross averages 30 frost days, 0 hot days (≥ 30 °C) and 141 rainy days per year.
New Ross has warmed by +0.7 °C between 1940 and 2025, or +0.08 °C per decade. This trend is statistically significant.
The number of frost days there went from about 37 to 23 per year over the period.
The hottest day of the period reached 28.7 °C (on 29 June 1976) and the coldest -12.4 °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
New RossLeinster
- coords
- 52.40°, -6.94°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.8°C
Average daily high
12.8°C
Average daily low
6.6°C
Annual rainfall
808mm
Sunshine / day
7.5h
Mean relative humidity
83%
Average peak wind
19.8km/h
Seasonal range
10.4°C
Frost days (< 0 °C)
30 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
141 d/yr
Annual snowfall
8.4 cm
Average feels-like high
10.3 °C
Average feels-like low
3.8 °C
Average peak gust
43.4 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
10.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.7 °C
since 1940
+0.1 °C per decade · r² = 0.15 · 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
28.7 °C
29 June 1976
Coldest day
-12.4 °C
12 January 1982
Wettest day
69 mm
25 August 1986
Windiest day
60.4 km/h
12 January 1974
Strongest gust
135.7 km/h
23 April 1947
Hottest feels-like
32.3 °C
13 July 1983
Coldest feels-like
-16.9 °C
12 January 1982
Snowiest day
21.6 cm
8 January 1982
Sunniest day
16.6 h
20 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 | 7.5 °C | +0.1 °C | 99 mm | +24 mm |
| Feb | 8.9 °C | +1.1 °C | 88 mm | +28 mm |
| Mar | 11.6 °C | +2.0 °C | 26 mm | -36 mm |
| Apr | 14.1 °C | +2.3 °C | 66 mm | +7 mm |
| May | 17.7 °C | +3.1 °C | 35 mm | -34 mm |
| Jun | 18.3 °C | +1.0 °C | 57 mm | -3 mm |
| Jul | 20.3 °C | +1.5 °C | 82 mm | +21 mm |
| Aug | 19.8 °C | +1.3 °C | 35 mm | -34 mm |
| Sep | 16.3 °C | -0.1 °C | 103 mm | +36 mm |
| Oct | 13.5 °C | +0.2 °C | 97 mm | +17 mm |
| Nov | 10.9 °C | +1.1 °C | 113 mm | +43 mm |
| Dec | 9.3 °C | +1.2 °C | 114 mm | +37 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 New Ross?
New Ross has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.8 °C and it receives 808 mm of precipitation per year.
What is the hottest day ever recorded in New Ross?
The hottest day measured in New Ross between 1940 and 2025 was 29 June 1976, reaching 28.7 °C.
What is the coldest day in New Ross?
The coldest day measured in New Ross between 1940 and 2025 was 12 January 1982, at -12.4 °C.
Does it snow in New Ross?
Yes. New Ross gets on average 8.4 cm of snow per year and has around 30 frost days.
Has the climate of New Ross warmed?
Yes: New Ross warmed by +0.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in New Ross?
The wettest day measured in New Ross between 1940 and 2025 was 25 August 1986, with 69 mm of rain in 24 hours.
What was the windiest day in New Ross?
The windiest day measured in New Ross between 1940 and 2025 was 12 January 1974, with winds reaching 60.4 km/h.
What is the warmest month in New Ross?
The warmest month in New Ross is July (15.4 °C on average); the coldest is January (5.0 °C).
How much does it rain in New Ross?
New Ross receives on average 808 mm of precipitation per year, spread over about 141 rainy days.
Is it sunny in New Ross?
New Ross gets on average 7.5 hours of sunshine per day, roughly 2,738 hours per year over 1940-2025.
What is the biggest single-day snowfall in New Ross?
The heaviest 24-hour snowfall measured in New Ross between 1940 and 2025 was 8 January 1982, with 21.6 cm.
Are there tropical nights in New Ross?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in New Ross.
What was the most extreme apparent temperature in New Ross?
In New Ross, between 1940 and 2025, the highest apparent temperature reached 32.3 °C on 13 July 1983, and the lowest was -16.9 °C on 12 January 1982.
Compare New Ross with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around New Ross