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Climate in Borrisokane · Met Éireann 1991–2020 averages

Midwinter lows in Borrisokane sink below those of 78% of Irish towns

In July the day’s top temperature is typically 19.8°C. Expect the heaviest rain in December and the lightest in April. Windscreens need scraping on about 41 mornings a year, the nights the air drops below 0°C.

July afternoons: cooler than 56% of Irish towns
January nights: colder than 78% of Irish towns
Rain a year: wetter than 51% of Irish towns

Met Éireann 1991–2020 averages for the town’s own square kilometre.

A year in Borrisokane at a glance

Each month’s typical high and low, in °C.

Jan8°C2°C
Feb9°C2°CColdest nights
Mar11°C3°C
Apr13°C5°CLast frost ~28 Apr
May16°C7°C
Jun19°C10°C
Jul20°C12°CWarmest
Aug20°C11°C
Sep18°C9°C
Oct14°C7°CFirst frost ~25 Oct
Nov now11°C4°C
Dec9°C3°CWettest

What stands out about Borrisokane’s climate

Compared with Irish towns, with its place among towns of 2,500+ in County Tipperary beside it.

A normal year

What a year in Borrisokane feels like

Typical highs and lows by season and by month, from Met Éireann’s 1991–2020 averages.

Winter
9°C / 2°C
271 mm of rain, the wettest season
Spring
13°C / 5°C
191 mm of rain
Summer
19°C / 11°C
225 mm of rain
Autumn
14°C / 7°C
267 mm of rain
Best months to be outsideJunJulAugSepHighs of 17–27°C and nights of 8°C or more
Frost & warm days

41 frosts and 3 days of 25°C a year

Ground frosts, when the grass drops below 0°C, come on about 103 nights a year. Air frosts come mostly from October to April, most of all in March (about 8).

41
Air frosts a year (below 0°C)
103
Ground frosts a year (grass below 0°C)
3
Days of 25°C or more

Air frosts by month

Average nights below 0°C

8.3
JFMAMJJASOND

Ground frosts by month

Average nights with the grass below 0°C

17
JFMAMJJASOND

Counted from Gurteen’s daily readings, 2008–2020, 9.2 km north-east of Borrisokane: Met Éireann publishes these for its stations only.

Rain

About 955 mm of rain a year

December is the wettest month and April the driest. 10th wettest of 10 towns of 2,500+ in County Tipperary. The wettest month brings about 1.7 times the rain of the driest. Gurteen records 1 mm or more on about 166 days a year, and 10 mm on about 23.

955 mm
Rain a year
Wetter than 51% of Irish towns
104 mm
December, the wettest month
60 mm
April, the driest month

Rain by month

Millimetres

104 mm
JFMAMJJASOND
Heating

Heating a home in Borrisokane

84% of a year’s heating need falls between October and April. Months averaging under 10°C: November to April.

2,236 heating degree days (below 15.5°C)a year, 2008–2020

Degree days add up how far each day’s mean temperature falls below 15.5°C over a year.

Living here

Living with Borrisokane’s climate

What the averages mean for a garden, a free afternoon and a bad-weather day.

The garden window

In half of years the last air frost at Gurteen comes by 28 April and the first by 25 October: about 180 frost-free days in between.

Get outside

Highs of 17–27°C with lows of 8°C or more: Jun, Jul, Aug and Sep.

Parks & trails →
Storms and extremes

Averages smooth over storms, floods and heatwaves; Borrisokane’s hazards page covers the risks.

Flood & hazards →
Weather station

Met Éireann’s nearest station: Gurteen

Gurteen is 9.2 km north-east of Borrisokane, the nearest of the 25 synoptic stations where Met Éireann records the weather around the clock. The station stands 75 m above sea level; Borrisokane’s centre, 63 m.

MonthHighLowRainAir frosts
January7.9°C2.0°C87 mm7.3
February8.5°C1.9°C74 mm7.6
March10.2°C1.9°C73 mm8.3
April13.1°C3.7°C54 mm3.3
May15.8°C6.4°C60 mm0.6
June18.3°C9.0°C74 mm0.0
July19.4°C11.1°C78 mm0.0
August18.6°C10.7°C90 mm0.0
September16.8°C8.8°C70 mm0.1
October13.7°C6.4°C91 mm1.2
November10.0°C3.6°C106 mm4.9
December8.2°C2.2°C98 mm8.0
Year13.4°C5.6°C954 mm41

The table is Gurteen’s own record, averaged over 2008–2020 from its daily readings (ours, not a Met Éireann table). The temperatures and rain elsewhere on this page are Met Éireann’s 1 km grid at Borrisokane itself; the frosts and degree days are this station’s.

Compared with other towns

How Borrisokane compares

Against the 321 Irish towns and city neighbourhoods of 2,500 or more, each read from Met Éireann’s grid at its own centre, and its place among towns of 2,500+ in County Tipperary.

July afternoons19.8°C
BorrisokaneMedian Irish town
18°C19°C20°C21°C22°C
Cooler than 56% of Irish towns5th warmest of 10 towns of 2,500+ in County Tipperary
January nights2.3°C
BorrisokaneMedian Irish town
1°C2°C3°C4°C
Colder than 78% of Irish towns5th mildest of 10 towns of 2,500+ in County Tipperary
Rain a year955 mm
BorrisokaneMedian Irish town
8001,0001,2001,400
Wetter than 51% of Irish towns10th wettest of 10 towns of 2,500+ in County Tipperary
Then and now

Warmer than it used to be

Borrisokane’s 1991–2020 average is 0.2°C warmer than 1981–2010’s. The biggest change is in February (+0.4°C).

+0.2°C1991–2020 vs 1981–2010

A year’s rain is 955 mm, up 4% from 920 mm.

Winter+0.3°Cnow 6°C, was 5°C
Spring+0.3°Cnow 9°C, was 9°C
Summer+0.2°Cnow 15°C, was 15°C
Autumn+0.2°Cnow 10°C, was 10°C

Change by month

JanFebMarAprMayJunJulAugSepOctNovDec

The two periods share 1991–2010, so the gap is a decade’s step, not the change between two separate 30-year periods.

Next door

Borrisokane and its neighbours

Every town next door is within half a degree of Borrisokane in January and July. Choose a measure to recolour the map; tap a town for its climate.

Portumna: January low 2.3°C, July high 19.8°CNenagh: January low 2.3°C, July high 19.8°CBirr: January low 2.3°C, July high 19.9°CBorrisokane: January low 2.3°C, July high 19.8°CBorrisokanePortumnaNenaghBirr
ColderMilder2.3°C to 2.3°C
Borrisokane2.3°C
Portumna2.3°C about the same
Nenagh2.3°C about the same
Birr2.3°C about the same

The towns next door, side by side

The nearest towns of 1,000+ within 19 km: a hill, a valley or the sea can make a real difference over a short distance.

TownJuly highJanuary lowRain a year
Borrisokane19.8°C2.3°C955 mm
Portumna 12 km19.8°C about the same2.3°C about the same930 mm
Nenagh 15 km19.8°C about the same2.3°C about the same1,037 mm
Birr 18 km19.9°C about the same2.3°C about the same885 mm

Each town’s colour is Met Éireann’s 1 km grid at its own centre, so towns a few kilometres apart can differ.

Month by month

Borrisokane weather by month

Average daily high and low, mean temperature and rain, 1991–2020, for the town itself (Met Éireann’s 1 km grid).

MonthHighLowMeanRain
January8.4°C2.3°C5.3°C94 mm
February9.0°C2.2°C5.6°C73 mm
March10.8°C3.1°C7.0°C69 mm
April13.4°C4.5°C9.0°C60 mm
May16.1°C7.0°C11.6°C62 mm
June18.6°C9.6°C14.1°C72 mm
July19.8°C11.6°C15.7°C71 mm
August19.5°C11.3°C15.4°C81 mm
September17.5°C9.4°C13.5°C73 mm
October14.0°C6.8°C10.4°C95 mm
November10.6°C4.2°C7.4°C99 mm
December8.6°C2.6°C5.6°C104 mm
Year13.9°C6.2°C10.0°C955 mm
Year to year

How much a month can swing

December swings the most: over 13 years its average ranged from −0.4°C (2010) to 8.3°C (2015). September is the most reliable, staying within 2.2°C.

Coldest to warmest month in 13 yearsNormal
Sources

Where Borrisokane’s numbers come from

Averages over 30 years, not a forecast: the town’s own from Met Éireann’s grid, the frosts and degree days from its nearest station.

  • Temperature and rain: Met Éireann’s 1991–2020 averages on its 1 km grid (Climatological Notes 22 and 23), read at the grid point nearest Borrisokane’s population centre (0.5 km away).
  • Weather station: the nearest of Met Éireann’s 25 synoptic stations, Gurteen, 9.2 km north-east, from Met Éireann’s station list.
  • Frosts and degree days: Gurteen’s daily readings from Met Éireann (clidata.met.ie), 2008–2020, averaged by month: a month counts when 27 or more of its days were read (rain and sunshine: every day), and a figure needs 10 such years.
  • Then and now: Met Éireann’s 1981–2010 averages on the same 1 km grid, at the same point.
  • Altitudes: the town’s ground from the Copernicus GLO-30 surface model (a few metres high in built-up places), the station’s from Met Éireann.
  • Comparisons: every Irish town and city neighbourhood of 2,500 or more, read the same way; the five city totals are left out.
  • Not on this page: sunshine at this station, snow and wind. Met Éireann publishes none of them on a grid; the frosts here are its nearest station’s, not the town’s own.

Met Éireann 30-year averages · Met Éireann open data. Under Creative Commons Attribution 4.0 (CC BY 4.0).

Questions about Borrisokane’s climate

How warm does Borrisokane get in summer?

July is the warmest month, with average highs of 19.8°C.

How cold does Borrisokane get in winter?

The coldest nights come in February, averaging 2.2°C. At Gurteen, the nearest Met Éireann station, the air drops below 0°C on about 41 nights a year (2008–2020).

How much rain does Borrisokane get?

About 955 mm a year, more than 51% of Irish towns. December is the wettest month (104 mm) and April the driest (60 mm).

How sunny is it?

Met Éireann publishes its 1991–2020 sunshine averages for its weather stations only, not on the 1 km grid this page reads, so there is no sunshine figure for Borrisokane itself. Its nearest synoptic station is Gurteen.

Are these figures for Borrisokane itself?

Partly. The temperatures and rain are Met Éireann’s 1991–2020 averages on its 1 km grid, read at Borrisokane’s population centre; the frosts, degree days and year-to-year swings are those of Gurteen, 9.2 km north-east, the nearest of its synoptic stations.

Where do these figures come from?

Met Éireann’s 1991–2020 climate averages, published as maps of Ireland in 1 km squares (Climatological Notes 22 and 23); the page reads the square at Borrisokane’s population centre. They are 30-year averages, not a forecast.

Copyright Met Éireann. Source: www.met.ie. This data is published under a Creative Commons Attribution 4.0 International (CC BY 4.0) licence. Met Éireann does not accept any liability whatsoever for any error or omission in the data, their availability, or for any loss or damage arising from their use. This material has been modified from the original: TownRatings reads the 1 km grid at each town’s population centre. Today’s forecast for Borrisokane →

Contains Central Statistics Office (CSO) data, Census 2022, and Tailte Éireann boundaries (CSO Urban Areas, Small Areas, local electoral areas, constituencies), under Creative Commons Attribution 4.0 (CC BY 4.0).