Hertfordshire weather in May 2025

Q: How warm is it in Hertfordshire in May?

Daytime temperatures usually reach 17°C in Watford, Hertfordshire in May, falling to 7°C at night.

Q: How sunny is it in Hertfordshire in May?

There are normally 6 hours of bright sunshine each day in Watford, Hertfordshire in May - that's 40% of daylight hours.

Q: Does it rain in Hertfordshire in May?

There are usually 14 days with some rain in Watford, Hertfordshire in May and the average monthly rainfall is 56mm.

Expect 17°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Hertfordshire in May based on long-term weather averages. There is usually 14 days with some rainfall and 56 mm of average monthly rainfall in May.

17
17°C max day temperature
6
6 hours of sunshine per day
14
14 days with some rainfall
7
7°C min night temperature
16
16 hours of daylight per day
0
No heat & humidity
56
56 mm of monthly rainfall
5
5 (Moderate) UV index

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The May weather guide for Hertfordshire (Watford) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

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

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How warm is it in Hertfordshire in May?

Daytime temperatures usually reach 17°C in Watford, Hertfordshire in May, falling to 7°C at night.

How sunny is it in Hertfordshire in May?

There are normally 6 hours of bright sunshine each day in Watford, Hertfordshire in May - that's 40% of daylight hours.

Does it rain in Hertfordshire in May?

There are usually 14 days with some rain in Watford, Hertfordshire in May and the average monthly rainfall is 56mm.

Hertfordshire May sunrise & sunset times

Browse the sunrise and sunset times for Hertfordshire in May 2025. Select a month to view Hertfordshire sunrise and sunset times for the next 12 months. The Hertfordshire sunrise and sunset times shown below are for Watford.

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