Tuam climate — normals and trends
Tuam (Ireland) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.7 °C and it receives 964 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 (15.0 °C on average) and the coldest is January (5.1 °C). Rainfall peaks in December.
Tuam averages 26 frost days, 0 hot days (≥ 30 °C) and 168 rainy days per year.
Tuam has warmed by +0.4 °C between 1940 and 2025, or +0.05 °C per decade. This trend is statistically significant.
The number of frost days there went from about 33 to 19 per year over the period.
The hottest day of the period reached 29.2 °C (on 13 July 1983) and the coldest -11.3 °C (on 25 December 2010).
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
TuamConnacht
- coords
- 53.52°, -8.85°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.7°C
Average daily high
12.7°C
Average daily low
6.8°C
Annual rainfall
964mm
Sunshine / day
6.8h
Mean relative humidity
83%
Average peak wind
20.5km/h
Seasonal range
9.9°C
Frost days (< 0 °C)
26 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
168 d/yr
Annual snowfall
9.5 cm
Average feels-like high
10.0 °C
Average feels-like low
3.9 °C
Average peak gust
42.8 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
9.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.4 °C
since 1940
+0.1 °C per decade · r² = 0.07 · p = 0.013
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
29.2 °C
13 July 1983
Coldest day
-11.3 °C
25 December 2010
Wettest day
48 mm
28 November 1999
Windiest day
66.8 km/h
24 January 2025
Strongest gust
137.9 km/h
24 January 2025
Hottest feels-like
33.1 °C
13 July 1983
Coldest feels-like
-15.4 °C
25 December 2010
Snowiest day
14.7 cm
10 December 2017
Sunniest day
16.8 h
20 June 2010
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 | 7.4 °C | 0.0 °C | 65 mm | -24 mm |
| Feb | 8.9 °C | +0.9 °C | 111 mm | +38 mm |
| Mar | 11.7 °C | +1.9 °C | 35 mm | -39 mm |
| Apr | 14.9 °C | +2.9 °C | 83 mm | +17 mm |
| May | 17.6 °C | +3.0 °C | 48 mm | -31 mm |
| Jun | 17.7 °C | +0.8 °C | 93 mm | +22 mm |
| Jul | 19.4 °C | +1.2 °C | 76 mm | +3 mm |
| Aug | 19.3 °C | +1.3 °C | 68 mm | -17 mm |
| Sep | 15.6 °C | -0.5 °C | 120 mm | +39 mm |
| Oct | 13.2 °C | +0.1 °C | 104 mm | +12 mm |
| Nov | 10.5 °C | +0.8 °C | 124 mm | +38 mm |
| Dec | 8.9 °C | +0.8 °C | 117 mm | +21 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 Tuam?
Tuam has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.7 °C and it receives 964 mm of precipitation per year.
What is the hottest day ever recorded in Tuam?
The hottest day measured in Tuam between 1940 and 2025 was 13 July 1983, reaching 29.2 °C.
What is the coldest day in Tuam?
The coldest day measured in Tuam between 1940 and 2025 was 25 December 2010, at -11.3 °C.
Does it snow in Tuam?
Yes. Tuam gets on average 9.5 cm of snow per year and has around 26 frost days.
Has the climate of Tuam warmed?
Yes: Tuam warmed by +0.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Tuam?
The wettest day measured in Tuam between 1940 and 2025 was 28 November 1999, with 48 mm of rain in 24 hours.
What was the windiest day in Tuam?
The windiest day measured in Tuam between 1940 and 2025 was 24 January 2025, with winds reaching 66.8 km/h.
What is the warmest month in Tuam?
The warmest month in Tuam is July (15.0 °C on average); the coldest is January (5.1 °C).
How much does it rain in Tuam?
Tuam receives on average 964 mm of precipitation per year, spread over about 168 rainy days.
Is it sunny in Tuam?
Tuam gets on average 6.8 hours of sunshine per day, roughly 2,482 hours per year over 1940-2025.
What is the biggest single-day snowfall in Tuam?
The heaviest 24-hour snowfall measured in Tuam between 1940 and 2025 was 10 December 2017, with 14.7 cm.
Are there tropical nights in Tuam?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Tuam.
What was the most extreme apparent temperature in Tuam?
In Tuam, between 1940 and 2025, the highest apparent temperature reached 33.1 °C on 13 July 1983, and the lowest was -15.4 °C on 25 December 2010.
Compare Tuam with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Tuam