Omagh climate — normals and trends
Omagh (United Kingdom) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.0 °C and it receives 935 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 (14.5 °C on average) and the coldest is January (4.2 °C). Rainfall peaks in August.
Omagh averages 34 frost days, 0 hot days (≥ 30 °C) and 178 rainy days per year.
Omagh has warmed by +0.8 °C between 1940 and 2025, or +0.10 °C per decade. This trend is statistically significant.
The number of frost days there went from about 44 to 24 per year over the period.
The hottest day of the period reached 28.2 °C (on 29 July 1948) and the coldest -13.6 °C (on 20 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
OmaghNorthern Ireland
- coords
- 54.60°, -7.30°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.0°C
Average daily high
11.9°C
Average daily low
6.2°C
Annual rainfall
935mm
Sunshine / day
6.6h
Mean relative humidity
84%
Average peak wind
19.8km/h
Seasonal range
10.3°C
Frost days (< 0 °C)
34 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
178 d/yr
Annual snowfall
22.4 cm
Average feels-like high
9.2 °C
Average feels-like low
3.2 °C
Average peak gust
43.0 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
9.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.8 °C
since 1940
+0.1 °C per decade · r² = 0.20 · 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
28.2 °C
29 July 1948
Coldest day
-13.6 °C
20 December 2010
Wettest day
49 mm
6 September 2010
Windiest day
64.5 km/h
16 September 1961
Strongest gust
129.2 km/h
26 December 1998
Hottest feels-like
32.3 °C
29 July 1948
Coldest feels-like
-17.8 °C
20 December 2010
Snowiest day
23.2 cm
30 March 2010
Sunniest day
17.0 h
19 June 1941
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 6.5 °C | +0.1 °C | 47 mm | -35 mm |
| Feb | 8.0 °C | +1.0 °C | 78 mm | +11 mm |
| Mar | 11.0 °C | +2.2 °C | 25 mm | -45 mm |
| Apr | 14.2 °C | +3.1 °C | 93 mm | +25 mm |
| May | 16.9 °C | +2.9 °C | 58 mm | -19 mm |
| Jun | 17.2 °C | +0.7 °C | 107 mm | +33 mm |
| Jul | 18.9 °C | +1.2 °C | 75 mm | -4 mm |
| Aug | 18.9 °C | +1.5 °C | 59 mm | -28 mm |
| Sep | 15.1 °C | -0.3 °C | 106 mm | +26 mm |
| Oct | 12.4 °C | 0.0 °C | 134 mm | +50 mm |
| Nov | 9.6 °C | +0.7 °C | 110 mm | +31 mm |
| Dec | 8.2 °C | +1.1 °C | 89 mm | +2 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 Omagh?
Omagh has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.0 °C and it receives 935 mm of precipitation per year.
What is the hottest day ever recorded in Omagh?
The hottest day measured in Omagh between 1940 and 2025 was 29 July 1948, reaching 28.2 °C.
What is the coldest day in Omagh?
The coldest day measured in Omagh between 1940 and 2025 was 20 December 2010, at -13.6 °C.
Does it snow in Omagh?
Yes. Omagh gets on average 22.4 cm of snow per year and has around 34 frost days.
Has the climate of Omagh warmed?
Yes: Omagh warmed by +0.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Omagh?
The wettest day measured in Omagh between 1940 and 2025 was 6 September 2010, with 49 mm of rain in 24 hours.
What was the windiest day in Omagh?
The windiest day measured in Omagh between 1940 and 2025 was 16 September 1961, with winds reaching 64.5 km/h.
What is the warmest month in Omagh?
The warmest month in Omagh is July (14.5 °C on average); the coldest is January (4.2 °C).
How much does it rain in Omagh?
Omagh receives on average 935 mm of precipitation per year, spread over about 178 rainy days.
Is it sunny in Omagh?
Omagh gets on average 6.6 hours of sunshine per day, roughly 2,409 hours per year over 1940-2025.
What is the biggest single-day snowfall in Omagh?
The heaviest 24-hour snowfall measured in Omagh between 1940 and 2025 was 30 March 2010, with 23.2 cm.
Are there tropical nights in Omagh?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Omagh.
What was the most extreme apparent temperature in Omagh?
In Omagh, between 1940 and 2025, the highest apparent temperature reached 32.3 °C on 29 July 1948, and the lowest was -17.8 °C on 20 December 2010.
Compare Omagh with another city
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Nearby cities
The climate around Omagh