What is the weather like in Dublin in January?

Expect temperatures between 4°C and 8°C with 26% average rain probability and about 8 hours of sunshine daily.

What is the weather like in Dublin in January?

Dublin in January scores 63/100 based on 30 years of climate data. Worthwhile timing with some trade-offs.

Who should visit Dublin in January?

January in Dublin is ideal for: Cultural tourists, Business travelers, Adventure seekers.

Dublin Weather in January | 30-Year Forecast

Avg High

8°C

Hottest around day 12

Avg Low

4°C

Coolest around day 7

Rainy Days

17days

26% avg rain chance

Sunshine

8hrs/day

Winter season

Sea Temperature in January

Irish Sea

8.8°C

Monthly Average

Water Feel

🥶Polar Plunge

Consider a wetsuit for extended swimming

Swim Rating

❄️Cold water hazard

Based on average sea surface temperature

Body of Water

Irish Sea

Dublin coastline

Essential Travel Info for Dublin

🗓️ Best Time to Visit 📖 Travel Guide 🍴 Food Guide

Currency

EUR

€ Euro

Language

English

+1 more

Driving

Left side

Connect

As of July 2024, all of the city and its...

Safety

Very High Safety

GPI: 1.288

Travel Intelligence

Exclusive flight analytics & health data for Dublin

Smart Flight Estimator

Airport-to-Airport Logistics

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Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Well Connected

68/ 100

Traffic Index

Popular destination

Peak Daily Arrivals

slots per day

Peak

Jun

Low

Jul

Monthly Traffic Distribution

270

Jan

335

Feb

353

Mar

371

Apr

408

May

414

Jun

243

Jul

398

Aug

385

Sep

364

Oct

319

Nov

332

Dec

Traffic Level

Low Season

Key Connections

London Heathrow (LHR)

Manchester (MAN)

Amsterdam Schiphol (AMS)

Birmingham (BHX)

Edinburgh (EDI)

Health & Safety Advisory

CDC travel health recommendations

6 Recommendations

COVID-19

All eligible travelers should be up to date with their COVID-19 vaccines. Please seeYour COVID-19 Vaccinationfor more information.

Hepatitis A

Consider hepatitis A vaccination for most travelers. It is recommended for travelers who will be doing higher risk activities, such as visiting smaller cities, villages, or rural areas where a traveler might get infected through food or water. It is recommended for travelers who plan on eating street food.

Hepatitis B

Recommended for unvaccinated travelers younger than 60 years old traveling to Ireland. Unvaccinated travelers 60 years and older may get vaccinated before traveling to Ireland.

Measles

Cases of measles are on the rise worldwide. Travelers are at risk of measles if they have not been fully vaccinated at least two weeks prior to departure, or have not had measles in the past, and travel internationally to areas where measles is spreading.All international travelers should be fully vaccinated against measles with the measles-mumps-rubella (MMR) vaccine, including an early dose for infants 6–11 months, according toCDC’s measles vaccination recommendations for international travel.

Rabies

Dogs infected with rabies are not commonly found in Ireland.If rabies exposures occur while in Ireland, rabies vaccines are typically available throughout most of the country.Rabies pre-exposure vaccination considerations include whether travelers 1) will be performing occupational or recreational activities that increase risk for exposure to potentially rabid animals and 2) might have difficulty getting prompt access to safe post-exposure prophylaxis.Please consult with a healthcare provider to determine whether you should receive pre-exposure vaccination before travel.For more information, seecountry rabies status assessments.

Yellow Fever

CDC recommendations:Vaccine isnotrecommended.Country entry requirements:Vaccine isnotrequired.Updated April 23, 2025

Source: CDC Travelers' Health

View Complete Health Guide

Is January a Good Time to Visit Dublin?

👌Worthwhile timing with some trade-offs(63/100)

Short Answer

Bundle up for Dublin in January: temperatures hover around 8°C during the day and drop to 4°C at night. Just 26% rain probability but bring winter layers.

Decision Factors

Vaccinations required

Yellow Fever

Very high humidity

85% average humidity

Cold sea - swimming challenging

8.8°C sea temperature - Polar Plunge

Health precautions needed

Be aware of: Leptospirosis, Hantavirus, Parvovirus B19

Shoulder season - balanced conditions

65% of peak - good value with moderate crowds

Exceptional dining scene

47 Michelin-listed restaurants

Good For

🏛️
Cultural tourists
Comfortable conditions for exploring museums and sites
💼
Business travelers
Climate-controlled meetings unaffected by weather
🎯
Adventure seekers
1.03m waves - good for surfing and water sports

Who Should Avoid

🏖️
Beach lovers
Sea temperature only 8.8°C - too cold for comfortable swimming
👴
Elderly travelers
85% humidity creates difficult conditions

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Dublin in January averages 8°C with 26% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: Dublin in January

What are the temperatures in Dublin in January?

Daytime highs average 8°C, nights drop to 4°C. Temperatures remain fairly consistent.

How many rainy days in Dublin in January?

Expect around 17 days with measurable rainfall. Rain is unlikely to disrupt plans.

What to wear in Dublin in January?

Warm winter clothing: insulated jacket, boots, gloves.

Is January peak season in Dublin?

This is shoulder season—moderate prices and manageable crowds.

Dublin Weather in January

Sea Temperature in January

Dublin January Weather Calendar

Essential Travel Info for Dublin

Travel Intelligence

Smart Flight Estimator

Flight Connectivity Analysis

Monthly Traffic Distribution

Key Connections

Health & Safety Advisory

COVID-19

Hepatitis A

Hepatitis B

Measles

Rabies

Yellow Fever

Is January a Good Time to Visit Dublin?

Decision Factors

Good For

Who Should Avoid

Related Guides

Frequently Asked Questions: Dublin in January

What are the temperatures in Dublin in January?

How many rainy days in Dublin in January?

What to wear in Dublin in January?

Is January peak season in Dublin?