New Hampshire weather

Our guide to the weather in New Hampshire during May

20

Average high

5

UV Index

110mm

Monthly rainfall

73%

Humidity

We've looked at the most up-to-date weather data for New Hampshire, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about New Hampshire weather in May.

What's the temperature like in New Hampshire during May?

The temperature reaches around 20℃ during the daytime in May, falling away to 7℃ at night. The UV index will be moderate at this time of year, so not something to worry about for the average person. However, if you're going to be outside for long periods it's worth wearing a broad spectrum SPF 30+ sunscreen and UV-blocking sunglasses. Remember that bright surfaces, such as water and sand increase UV exposure.

Does it rain in New Hampshire during May?

On average, there will be 7 rainy days during the month, amounting to 110.0mm in total. That's a significant amount of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. There's a small chance that you'll catch a thunderstorm during your trip.

Is it windy in New Hampshire during May?

You're unlikely to experience any strong winds. Expect a light breeze that picks up slightly at times in May. With moderate air temperatures, any breeze will feel cool.

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Weather in New Hampshire

Our month-by-month guide to the weather and climate in New Hampshire

-2.1

New Hampshire weather in

January
-0.7

New Hampshire weather in

February
4.5

New Hampshire weather in

March
12.0

New Hampshire weather in

April
19.5

New Hampshire weather in

May
24.1

New Hampshire weather in

June
27.6

New Hampshire weather in

July
27.0

New Hampshire weather in

August
22.6

New Hampshire weather in

September
15.1

New Hampshire weather in

October
8.0

New Hampshire weather in

November
1.8

New Hampshire weather in

December