Which is the hottest month in Delaware?

The hottest time of year in Dover, Delaware is normally July. Expect maximum daytime temperatures to reach 31°C with high heat and humidity.

Best time to visit Delaware

Q: When is the best time to visit Delaware?

The best time to visit Delaware (Dover) is May, June and September 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 Delaware?

In terms of rainfall, August is usually the wettest month in Dover, Delaware with 110mm on average. There are normally 10 days in August with some rain.

Q: When is it sunniest in Delaware?

The sunniest time of year in Dover, Delaware is normally June with bright sunshine on average for 63% of daylight hours; that's 9 hours of sunshine per day.

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

Delaware by month

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

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Top Delaware destinations

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

All Delaware destinations

When is the best time to visit Delaware?

The best time to visit Delaware (Dover) is May, June and September 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.

1
Jan
1.5
Feb
1.5
Mar
3
Apr
4
May
4
Jun
4
Jul
4
Aug
4
Sep
4
Oct
1.5
Nov
1
Dec

Change criteria

Max Day Temperature (°C)

5
Jan
7
Feb
13
Mar
18
Apr
24
May
29
Jun
31
Jul
30
Aug
27
Sep
21
Oct
15
Nov
8
Dec

Hours of Sunshine (daily)

5
Jan
6
Feb
7
Mar
8
Apr
8
May
9
Jun
9
Jul
8
Aug
8
Sep
7
Oct
6
Nov
5
Dec

Best time to visit

Destination

Daytime temperature

Sunshine hours

Sea temperature

Monthly rainfall

Days with some rain

Heat & humidity

The weather guide for Delaware (Dover) 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)

More about Delaware

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

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

Delaware travel guide - essential info

Below is a beginner's guide to Delaware 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.

Delaware - quick facts
Flight time^✝	8 hours
Time difference	UK -5 hours
Language(s)	English
Currency	US Dollar
Electricity	A + B plug (120V)
Driving side	Right
Visa^✝	Yes

Delaware tourist information

Delaware Tourism Office

✝ = Typical flight time from the UK and visa requirements for UK travellers.

Travelling to Delaware?
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Delaware travel guidance

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

UK traveller advice for the Delaware - UK FCDO
Irish traveller advice for the Delaware - Department of Foreign Affairs, Ireland
Canadian travel advice for the Delaware - Government of Canada
Safe travel advisories for the Delaware - Ministry of Foreign Affairs, New Zealand
Smarter traveller advice for the Delaware - 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 Delaware.

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

Delaware travel health

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

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

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

Note: CDC - Centers for Disease Control and Prevention

Delaware travel features

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

We don't currently have any travel features on Delaware. Discover more about holiday destinations around the world with this selection of general travel articles.

Delaware FAQs

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

Which month has the most rain in Delaware?

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

When is it sunniest in Delaware?

The sunniest time of year in Dover, Delaware 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 Delaware?

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

What is the flight time to Delaware from the UK?

The flight time to Delaware from the UK is typically 8 hours.

What is the time difference between Delaware and the UK?

The time difference between Delaware and the UK is UK time-5 hours.

What is the main language spoken in Delaware?

The main language spoken in Delaware is English.

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

What is the currency in Delaware?

The currency in Delaware is the US Dollar (USD).

Send money to Delaware with TransferGo^*.

Which plugs are used in Delaware?

Delaware uses electrical plug type A + B (120 Volts).

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

They drive on the right side of the road in Delaware.

Find out more about driving in USA with International Drivers Association^*.

Do you need a visa for Delaware?

Yes, UK passport holders do need a visa to enter Delaware.

Check USA visa requirements for all passport holders with VisaHQ^*.

Delaware travel deals

Holidays to Delaware

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