Blanchardstown in Winter
In winter (December, January and February), Blanchardstown sees average daytime highs around 8°C and overnight lows near 4°C, with 182 mm of precipitation over about 36 wet days across the season. It is the coldest season of the year and the 3rd-wettest season.
Across winter, daytime highs hold fairly steady around 8°C. The sky is clear or mostly clear about 12% of the time across winter, and the air most often feels dry.
Winter is Blanchardstown's weakest season of the year to visit on our travel score. For the whole year in context, see Blanchardstown's year-round climate.
- Avg daytime high
- 8°C
- coldest season of the year
- Avg overnight low
- 4°C
- Precipitation
- 182 mm
- 36 wet days
- Avg wind
- 17 km/h
- Travel score
- 1.3
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Blanchardstown in Winter
Across winter, daytime highs hold fairly steady around 8°C.
A typical winter day in Blanchardstown reaches about 8°C and drops to 4°C overnight. The warmest of the three months is February, the coolest February.
How winter really feels in Blanchardstown
Once humidity and wind are folded in, winter brings about 0 days that feel above 32°C and 74 that feel at or below 0°C.
The story in winter is cold — wind chill drags the overnight "feels like" below the raw low.
Blanchardstown weather by month
How the three winter months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 8° / 3° | 63 | 12.5 | 0.8 | 7.8 | 1.2 |
| Feb | 8° / 3° | 51 | 11.5 | 1 | 9.4 | 1.4 |
| Mar | 10° / 4° | 53 | 11.8 | 0.7 | 11.5 | 2.1 |
| Apr | 12° / 6° | 59 | 12.8 | 0 | 13.7 | 3.0 |
| May | 15° / 8° | 60 | 12.9 | 0 | 15.6 | 4.0 |
| Jun | 18° / 11° | 68 | 11.9 | 0 | 16.6 | 5.1 |
| Jul | 19° / 13° | 68 | 13.3 | 0 | 16.2 | 5.4 |
| Aug | 19° / 12° | 72 | 12.5 | 0 | 14.6 | 5.4 |
| Sep | 17° / 10° | 61 | 11.4 | 0 | 12.5 | 4.9 |
| Oct | 13° / 8° | 69 | 11.7 | 0 | 10.3 | 3.6 |
| Nov | 10° / 5° | 75 | 12.5 | 0.1 | 8.4 | 2.1 |
| Dec | 8° / 4° | 69 | 12.3 | 0.7 | 7.3 | 1.4 |
Cloud cover in Winter
The sky is clear or mostly clear about 12% of the time across winter.
Chance of precipitation in Winter
Blanchardstown gets around 182 mm of rain and snow over 36 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 17 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 7 h 36 min in early December to 10 h 18 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 0.9 kWh/m².
Is winter a good time to visit Blanchardstown?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a weaker month for outdoor sightseeing in Blanchardstown.
What to pack for Blanchardstown in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Blanchardstown sees daytime highs around 8°C and nights near 4°C. Pack a warm layer. Worth having: a heavy coat and rain gear. About 36 days see rain.
Sea temperature near Blanchardstown in Winter
The nearest coast averages about 9°C across winter — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 17 km away) is warmest in August at about 15°C and coldest in March near 8°C.
The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 9 | 8 | 8 | 9 | 11 | 13 | 15 | 15 | 15 | 13 | 12 | 11 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Bracing | Bracing | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 9 | Bracing |
| Feb | 8 | Bracing |
| Mar | 8 | Bracing |
| Apr | 9 | Bracing |
| May | 11 | Bracing |
| Jun | 13 | Bracing |
| Jul | 15 | Bracing |
| Aug | 15 | Cool |
| Sep | 15 | Bracing |
| Oct | 13 | Bracing |
| Nov | 12 | Bracing |
| Dec | 11 | Bracing |
UV index in Blanchardstown in Winter
Clear-sky midday UV across winter averages around 1. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Blanchardstown 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 1 | 3 | 4 | 5 | 6 | 5 | 6 | 4 | 2 | 1 | 1 |
| Level | Low | Low | Moderate | Moderate | High | High | High | High | Moderate | Low | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 1 | Low |
| Mar | 3 | Moderate |
| Apr | 4 | Moderate |
| May | 5 | High |
| Jun | 6 | High |
| Jul | 5 | High |
| Aug | 6 | High |
| Sep | 4 | Moderate |
| Oct | 2 | Low |
| Nov | 1 | Low |
| Dec | 1 | Low |
Where is Blanchardstown?
Blanchardstown sits at 53.4°N, 6.4°W, 49 m above sea level, in Ireland. The nearest listed city is Finglas, 5.0 km away.
Topography around Blanchardstown
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Blanchardstown.
Within 3 km, the terrain around Blanchardstown has only modest variations in elevation — a maximum elevation change of 89 m around an average of 65 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 408 m; within 80 km, large variations in elevation — a maximum elevation change of 943 m.
The land around Blanchardstown is covered by artificial surfaces (39%), grassland (34%) and trees (25%) within 3 km, grassland (42%) and artificial surfaces (23%) within 16 km, and grassland (55%) and water (25%) within 80 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
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 Blanchardstown (53.3881°, -6.3756°, elevation 49 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.