Climate and average weather in Tullamore

In Tullamore, the summers are mild, showery, and mostly cloudy and the winters are cold and mostly cloudy.

Best: late May to late September

Over the course of the year, the temperature in Tullamore typically varies from 3°C to 19°C, and is rarely below -2°C or above 23°C. July is the hottest month of the year, while January is the coldest.

Based on the travel score, the best time of year to visit Tullamore for warm-weather activities is from late May to late September.

Hottest
Jul
19°
Coldest
Jan
Wettest
Nov
81 mm
Driest
Feb
62 mm
Rain / yr
871 mm
155 wet days
Daylight
7.3–16.7 h
shortest–longest
Elevation
60 m
53.3°N
Clearest
Nov
76% cloud

Tullamore is town in County Offaly, Ireland.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Tullamore weather by month, at a glance

The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.

Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around late May to late September.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

Daily average highs and lows in Tullamore, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.

The hot season lasts 3.7 months, from May 28 to September 18, with daily high temperatures above 16°C. The hottest month of the year in Tullamore is July, with an average high of 19°C and low of 12°C.

The cool season lasts 3.9 months, from November 16 to March 13, with daily high temperatures below 10°C. The coldest month of the year in Tullamore is January, with an average low of 3°C and high of 8°C.

Days typically run about 6°C warmer than nights year-round.

-5°10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan83
Feb83
Mar104
Apr125
May158
Jun1710
Jul1912
Aug1912
Sep1710
Oct137
Nov105
Dec83

How hot and cold Tullamore really feels

Feels-like highFeels-like lowactual air temp

The felt-temperature range through the year — heat index on the day's high (summer humidity), wind chill on the night's low (winter wind). The dashed lines are the plain thermometer; the gap is how much hotter or colder it really feels.

On the coldest nights, wind chill pulls the feels-like down to about -1°C (around February 24), with roughly 95 freezing days a year (feels-like at or below 0°C), worst in February.

-5°10°15°20°JanFebMarAprMayJunJulAugSepOctNovDec
Feels-like high (°C)Air high (°C)Feels-like low (°C)Air low (°C)
Jan88-13
Feb88-13
Mar101004
Apr121225
May151558
Jun17171010
Jul19191212
Aug19191212
Sep1717910
Oct131357
Nov101025
Dec8803

Average hourly temperature in Tullamore

A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.

Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on July afternoons, near 19°C, and coldest before dawn in January, near C.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM

Tullamore weather by month

Every month at a glance. Click a month for its detailed page.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 7513.90.67.91.1
Feb / 6211.80.79.41.3
Mar10° / 6312.80.411.52.0
Apr12° / 66130.113.73.0
May15° / 6813.2015.64.0
Jun17° / 10°7712.6016.65.0
Jul19° / 12°7613.3016.25.2
Aug19° / 12°8113.2014.65.2
Sep17° / 10°6711.7012.44.7
Oct13° / 7713010.33.4
Nov10° / 81130.18.42.0
Dec / 8113.60.67.41.2

Chance of rain

How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.

Tullamore gets about 871 mm of precipitation a year. On a typical day the chance of rain is often wet, but that rises and falls sharply with the seasons.

The wetter season lasts 3.2 months, from around Oct 24 to Jan 29, peaking in January at about 46% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Sep 1.

November is the wettest month by volume, with 81 mm over about 13 wet days; February is the driest, with 62 mm.

0%10%20%30%40%50%60%JanFebMarAprMayJunJulAugSepOctNovDecwetterdrierwettermostly drysome rainoften wetvery wetJan 10 · 46%Sep 1 · 36%
Rain on a day (%)Rain days
Jan4514
Feb4212
Mar4113
Apr4313
May4413
Jun4213
Jul4313
Aug4313
Sep3912
Oct4113
Nov4413
Dec4314

Monthly rainfall

Over a full year, Tullamore collects about 871 mm of rain across 155 wet days — roughly 73 mm in an average month.

It doesn’t fall evenly. November is the wettest month with 81 mm, while February is the driest at just 62 mm. The three wettest months alone bring about 28% of the year’s total, and some of the cold-season precipitation falls as snow.

0255075100JanFebMarAprMayJunJulAugSepOctNovDec756263666877768167778181
Rainfall (mm)Rain daysSnow days
Jan75141
Feb62121
Mar63130
Apr66130
May68130
Jun77130
Jul76130
Aug81130
Sep67120
Oct77130
Nov81130
Dec81141

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

How often the daytime sky is clear, partly cloudy or overcast.

In Tullamore, the average share of the sky covered by clouds shows moderate seasonal variation over the course of the year.

The clearer part of the year begins around September 19 and lasts for 4.1 months, ending around January 22. The clearest month is November, when the sky is clear, mostly clear, or partly cloudy 26% of the time on average.

The cloudier part of the year begins around June 6 and lasts for 3.4 months, ending around September 18. The cloudiest month is July, when it is overcast or mostly cloudy 88% of the time.

0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JanFebMarAprMayJunJulAugSepOctNovDecNov 13 · 26%Jul 29 · 11%mostly clearpartly cloudymostly cloudyovercastcloudierclearer
Clearer (%)Cloudier (%)
Jan2278
Feb2080
Mar2080
Apr2278
May2080
Jun1684
Jul1288
Aug1486
Sep1981
Oct2377
Nov2674
Dec2377

Daylight, sunrise and sunset

DaylightNight

Hours of daylight through the year, with sunrise and sunset times.

The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. The longest day, around June 13, brings about 16 h 42 min of light; the shortest, around December 13, only 7 h 18 min — a swing of roughly 9 h 24 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan7.98:454:33
Feb9.48:015:28
Mar11.56:556:24
Apr13.75:397:21
May15.64:388:14
Jun16.64:098:51
Jul16.24:288:43
Aug14.65:177:51
Sep12.46:126:37
Oct10.37:075:23
Nov8.48:064:25
Dec7.48:474:05

Sunny days

How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.

Tullamore averages about 2 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 1 and 4 days.

The sunnier stretch runs 5.1 months, from around Oct 15 to Mar 18. The sunniest month is November, with roughly 4 sunny days (gloomy).

The greyest month is August, down near 1 sunny days — about 75% fewer than the November peak.

0510JanFebMarAprMayJunJulAugSepOctNovDecsunniergreyersunniergloomymixedNov 234 daysAug 151 days
Sunny daysSky
Jan3Gloomy
Feb3Gloomy
Mar3Gloomy
Apr2Gloomy
May3Gloomy
Jun2Gloomy
Jul1Gloomy
Aug1Gloomy
Sep2Gloomy
Oct2Gloomy
Nov4Gloomy
Dec4Gloomy

Humidity comfort

DryComfortableHumidMuggyOppressiveMiserable

Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.

Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.

In Tullamore, the air stays dry or comfortable essentially all year. Even in August, the muggiest month, it feels humid or worse only about 5% of the time — humidity is not something you need to plan around here.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDeccomfortabledry
Dry (%)Comfortable (%)Humid (%)
Jan10000
Feb10000
Mar10000
Apr10000
May9820
Jun88120
Jul68294
Aug68275
Sep84151
Oct9550
Nov9910
Dec10000

Wind

Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.

This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.

Across the year, average wind speed in Tullamore is typically light breeze, near 14 km/h, and varies little with the seasons.

The windier part of the year lasts 5.5 months, from around Oct 18 to Apr 3. The windiest month is January, averaging about 16 km/h (light breeze).

The calmer part of the year runs from around Apr 4 to Oct 17, with July the calmest month at about 13 km/h.

05101520JanFebMarAprMayJunJulAugSepOctNovDecwindiercalmerwindiercalmlight breezeJan 7 · 16 km/hJul 16 · 12 km/h
Wind speed (km/h)Feels
Jan16light breeze
Feb16light breeze
Mar15light breeze
Apr14light breeze
May13light breeze
Jun13light breeze
Jul13light breeze
Aug13light breeze
Sep13light breeze
Oct14light breeze
Nov15light breeze
Dec16light breeze

Best time to visit Tullamore

TravelBeach/poolTemperatureCloudsPrecipitation

To characterize how pleasant the weather is in Tullamore throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.

Around early June, Tullamore is still near the start of its best-weather window — great conditions with the peak-season crowds not yet at full swing.

Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.

The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, the best time of year to visit Tullamore for general outdoor tourist activities is from late May to late September, with a peak score in the last week of August.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationAug 28 · 5.4

The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Travel score (0–10)Rating
Jan1.1poor
Feb1.3poor
Mar2.0poor
Apr3.0poor
May4.0fair
Jun5.0fair
Jul5.3fair
Aug5.3fair
Sep4.7fair
Oct3.4poor
Nov2.0poor
Dec1.3poor

The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best time of year to visit Tullamore for hot-weather activities is from late June to late August, with a peak score in the last week of July.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationJul 22 · 2.3

The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

What to pack for Tullamore, by month

EssentialRecommendedOptional

Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.

For a warm-season trip around July (highs near 19°C), the essentials are rain gear. In the cold season around January (highs near 8°C), pack a warm layer, a heavy coat and rain gear.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In July, Tullamore sees daytime highs around 19°C and nights near 12°C. Worth packing: rain gear. About 13 days see rain.

UV index (midday) in Tullamore by month

LowModerateHighVery highExtreme

Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.

Under clear skies, the midday UV index in Tullamore peaks around August 13 at about 6 (high) — a little sun protection helps at midday. It bottoms out near January 1 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowAug 13UV 6Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May5High
Jun5High
Jul5High
Aug6High
Sep4Moderate
Oct2Low
Nov1Low
Dec1Low

Average hourly UV index in Tullamore

LowModerateHighVery highExtreme

Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.

The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.

UV falls off far faster than brightness as the sun drops, so even in August the burn window is concentrated in the middle of the day: about 6.5 hours a day reach index 3 (protection recommended). Mornings and late afternoons stay comparatively gentle year round.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM
UV ≥ 3 (h/day)UV ≥ 6 (h/day)
Jan00
Feb00
Mar00
Apr3.50
May6.50
Jun70
Jul6.50
Aug6.50
Sep3.50
Oct00
Nov00
Dec00
Almanac & agriculture

Growing season

Chance of a frost-free dayReliably frost-free (≥90%)

Tullamore is mild enough that a frost-free day stays more likely than not even in midwinter. Nights are reliably above freezing from about March 17 to November 18 (247 days); outside that window a hard frost is an occasional risk.

0%25%50%75%100%JanFebMarAprMayJunJulAugSepOctNovDecreliably frost-freeMar 1790%Nov 1890%
Frost-free chance (%)Frost nights
Jan8231
Feb8228
Mar8914
Apr960
May1000
Jun1000
Jul1000
Aug1000
Sep1000
Oct980
Nov9113
Dec8331

Growing degree days

Degree days (base 10°C)Frost-free shaded

Growing degree days tally heat above 10°C: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. Tullamore banks about 601 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around July.

0200400600800JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan0
Feb0
Mar0
Apr0
May41
Jun116
Jul170
Aug161
Sep96
Oct18
Nov0
Dec0

Solar energy

Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.

Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.

Tullamore receives about 2.6 kWh/m² a day of solar energy on average — moderate — with a clear seasonal swing between 0.5 and 4.8 kWh/m².

The brighter stretch of the year lasts 5.9 months, from around Mar 21 to Sep 17. The brightest month is June, averaging about 4.7 kWh/m² (bright).

The dimmest month is December, down near 0.5 kWh/m² — roughly 89% less than the June peak.

0123456JanFebMarAprMayJunJulAugSepOctNovDecdimmerbrighterdimmerdimmoderatebrightJun 34.8 kWhDec 200.5 kWh
Solar energy (kWh/m²)Level
Jan0.7Dim
Feb1.3Dim
Mar2.4Moderate
Apr3.8Moderate
May4.7Bright
Jun4.7Bright
Jul4.2Bright
Aug3.6Moderate
Sep2.6Moderate
Oct1.6Dim
Nov0.8Dim
Dec0.5Dim

Where is Tullamore?

Tullamore sits at 53.3°N, 7.5°W, 60 m above sea level, in Ireland. The nearest listed city is Portlaoise, 29 km away.

PortlaoiseAn Muileann gCearrAthloneDroichead NuaNaasMaynoothCarlowCelbridge

Topography around Tullamore

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Tullamore.

Within 3 km, the terrain around Tullamore has only modest variations in elevation — a maximum elevation change of 46 m around an average of 65 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 188 m; within 80 km, large variations in elevation — a maximum elevation change of 924 m.

The land around Tullamore is covered by grassland (62%) within 3 km, grassland (78%) within 16 km, and grassland (79%) within 80 km.

3 km
46 m
16 km
188 m
80 km
924 m
treesgrasslandcroplandartificial surfaceswater
Nearby: Portlaoise 29 km · An Muileann gCearr 30 km · Athlone 34 km · Droichead Nua 47 km · Naas 55 km · Maynooth 61 km · Carlow 61 km · Celbridge 63 km

Ireland travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type G
230 V · 50 Hz
Prices
≈ 85% of US
price level, 2025
GDP per capita
$131,592
2025
Happiness
6.9 / 10
World Happiness, 2025
Safe drinking water
96%
of population, 2024
Homicide rate
0.7
per 100k, 2023
Road deaths
3.1
per 100k/yr, 2019
Income group
High
World Bank
Religion
Roman Catholic 69%none 15%Protestant 4%Orthodox 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Tullamore (53.2739°, -7.4889°, elevation 60 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).