Which is the hottest month in Ireland?

The hottest time of year in Dublin, Ireland is normally July. Expect maximum daytime temperatures to reach 19°C.

Best time to visit Ireland

Q: When is the best time to visit Ireland?

The best time to visit Ireland (Dublin) is June, July and August based on the following average weather conditions. Maximum daytime temperature = 22 - 30°C. Daily hours of sunshine = 10 hours or more.

Q: Which month has the most rain in Ireland?

In terms of rainfall, December is usually the wettest month in Dublin, Ireland with 75mm on average. There are normally 17 days in December with some rain.

Q: When is it sunniest in Ireland?

The sunniest time of year in Dublin, Ireland is normally May with bright sunshine on average for 38% of daylight hours; that's 6 hours of sunshine per day.

Q: When is the sea warmest in Ireland?

The sea is usually at its warmest in Dublin, Ireland in August when the water temperature reaches 15°C.

Find the best time to visit Ireland and plan your perfect trip in 2025/2026. Get holiday inspiration, weather guides, travel advice and find great deals.

Ireland by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Ireland

Newmarket Holidays: Top offers on European holidays

Sale

Save on holidays to destinations across Europe in 2025/2026
Destinations include to France, Spain, Norway, Russia & Cyprus
Enjoy an escorted tour, city break, river cruise & more

Go to Newmarket Holidays deal >>

View all Newmarket Holidays offers

Top Ireland destinations

Below are the temperatures expected today at popular countries, regions and places in Ireland. Select a destination to compare today's forecast with average weather conditions.

All Ireland destinations

When is the best time to visit Ireland?

The best time to visit Ireland (Dublin) is June, July and August based on the following average weather conditions.

Maximum daytime temperature = 22 - 30°C [remove]
Daily hours of sunshine = 10 hours or more [remove]

Change the criteria to reflect your weather preferences.

0
Jan
0
Feb
0.5
Mar
1
Apr
1.5
May
2
Jun
2
Jul
2
Aug
1
Sep
0
Oct
0
Nov
0
Dec

Change criteria

Max Day Temperature (°C)

8
Jan
8
Feb
10
Mar
12
Apr
15
May
18
Jun
19
Jul
19
Aug
17
Sep
14
Oct
10
Nov
9
Dec

Hours of Sunshine (daily)

2
Jan
3
Feb
4
Mar
5
Apr
6
May
6
Jun
5
Jul
5
Aug
4
Sep
3
Oct
2
Nov
2
Dec

Best time to visit

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

The weather guide for Ireland (Dublin) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

Metric (°C / mm) | Imperial (°F / inches)

Ireland weather overview

The women of Ireland are famed for their dewy complexions, thanks largely to the soft rain which falls on their country all year round.

If you hate getting wet, head for Dublin or Cork in the east and south where the climate is somewhat drier, or time your Irish trip for May when the weather is warmest and sunniest.

The west coast is stunningly beautiful but you will spend some of your time peering at the magnificent coastline through a fog of cloud and mist.

In winter, the west falls prey to some ferocious storms while the whole of Ireland, in common with the UK mainland, can occasionally be afflicted by cold spells when northerly and easterly winds bring snow and frost.

What to pack for Ireland weather

Light clothes supplemented with warmer jackets are fine during the summer; wrap up more warmly in the winter months. Always take an umbrella - but think how good all that drizzle is for the skin!

More about Ireland

Explore our complete guide to Ireland with the latest travel advice for travellers and holidaymakers including official updates and local travel tips for Ireland.

Essential travel guide
Travel guidance
Travel health
Travel features
Top travel deals
FAQs

Ireland travel guide - essential info

Below is a beginner's guide to Ireland with essential travel facts such as dominant language spoken, typical flight time from the UK and the local currency. You can also check whether visas are required and what plug adapter you need to pack.

Ireland - quick facts
Flight time^✝	1 to 1.5 hours
Time difference	UK +0 hours
Language(s)	English
Currency	Euro
Electricity	G plug (230V)
Driving side	Left

Why visit Ireland?

Considering a holiday to the Ireland? Here are some of the very good reasons it makes such a wonderful holiday destination be it for culture or nature to ensure you get the most out of your 2025/2026 escape.

Culture
Nature

Ireland tourist information

Tourism Ireland

✝ = Typical flight time from the UK.

Travelling to Ireland?
Hotels Flights eSIMs Travel insurance

Ireland travel guidance

Check the latest travel guidance and advice on visiting Ireland from official government sources (in english) from around the world including entry requirements and travel restrictions.

UK traveller advice for Ireland - UK FCDO
Canadian travel advice for Ireland - Government of Canada
US travel advisories for Ireland - US Department of State
Safe travel advisories for Ireland - Ministry of Foreign Affairs, New Zealand
Smarter traveller advice for Ireland - Department of Foreign Affairs, Australia

Learn more about the current safety and security risks from terrorism, natural disasters and more. Read about the local laws and customs to consider when travelling around Ireland.

Note: UK FCDO - UK Foreign, Commonwealth & Development Office

Ireland travel health

Find out more about staying safe when travelling to Ireland with the latest guidance on required vaccinations and recommended medication to take with you.

Vaccines & medicines for Ireland - CDC
Health & vaccinations for Ireland - TravelHealthPro, NaTHNac
How to stay safe & healthy in Ireland - Fit for Travel, Public Health Scotland

Check out the general travel tips for staying safe and healthy in Ireland, risks of preventable diseases and what to pack.

Note: CDC - Centers for Disease Control and Prevention

Ireland travel features

Do you want to learn more about Ireland? Read our latest features covering travel tips and insider destination guides on where to go and what to do in Ireland.

Ireland FAQs

Read our frequently asked questions about travelling to Ireland including the current entry restrictions, driving side, electrical plugs used and much more.

Which month has the most rain in Ireland?

In terms of rainfall, January is usually the wettest month in Dublin, Ireland with 0mm on average. There are normally no days in January with some rain.

When is it sunniest in Ireland?

The sunniest time of year in Dublin, Ireland is normally January with bright sunshine on average for 0% of daylight hours; that's 0 hours of sunshine per day.

When is the sea warmest in Ireland?

The sea is usually at its warmest in Dublin, Ireland in January when the water temperature reaches 0°C.

What is the flight time to Ireland from the UK?

The flight time to Ireland from the UK is typically 1 to 1.5 hours.

What is the time difference between Ireland and the UK?

The time difference between Ireland and the UK is UK time+0 hours.

What is the main language spoken in Ireland?

The main language spoken in Ireland is English.

Learn a language for Ireland with Rosetta Stone^*, Busuu^* and Rocket Languages^*.

What is the currency in Ireland?

The currency in Ireland is the Euro (EUR).

Send money to Ireland with TransferGo^*, Wise.com^* and XE Money Transfers^*.

Which plugs are used in Ireland?

Ireland uses electrical plug type G (230 Volts) - the same as the UK.

Which side of the road do they drive on in Ireland?

They drive on the left side of the road in Ireland.

Find out more about driving in Ireland with RAC^*, International Drivers Association^* and Halfords^*.

Ireland travel deals

Holidays to Ireland

Check out the latest deals, discount codes and special offers on holidays to Ireland in 2025/2026. Pay low deposits and save with last minute holiday availability and free kids places.