Heathrow Weather in May

Heathrow in May sees moderate daytime temperatures of 18°C (64°F) and nighttime lows of 9°C (48°F). Moderate rainfall is typical, with around 58 mm (2.3 in) for the month.

Rainfall in Heathrow in May

The climate data from previous years indicates about 14 days of rain, averaging 58 mm (2.3 in) for the month. The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.

Temperature in Heathrow in May

Daytime highs in Heathrow in May reach 18°C (64°F), with nights around 9°C (48°F). The difference between afternoon and evening temperatures is usually noticeable. Nights drop to 9°C (48°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.

Sunshine in Heathrow in May

Enjoy a sunny month with about 209 hours of sunshine, the clear skies make Heathrow even more beautiful.

Wind Speed in Heathrow in May

Average wind speeds reach 3 m/s (6 knots) in May, creating light breezes that feel pleasant throughout the day. Some days are calmer, while others bring slightly more active breezes.

If you prefer enjoying temperate temperatures and rain-free days, June, July, August and September typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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Check the conditions for any month of the year.

• January
• February
• March
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• May
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• December

For a detailed overview over the year and the best time to visit the United Kingdom, check out our Heathrow's climate page.

Heathrow Temperature in May

Min Temperature 9°C (48°F)  

Max Temperature 18°C (64°F)  

Chance of Rain 47%  

Precipitation 58 mm (2.3 in)  

Rainy days 14 days  

Humidity 66% *  

Windspeed 3 m/s (6 knots) *  

Sunshine 209 hours *  

Percentage Sunshine 41% *  

What to Wear in Heathrow in May

Pleasant temperatures in May mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Heathrow in May

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

6/10

Walking

6/10

Camping

4/10

Outdoor sports

10/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United Kingdom, check out our Heathrow's climate page.

More climate data for Heathrow

Temperature Rainfall Sunshine Humidity Wind Speed

See the full Heathrow climate overview or explore weather in the United Kingdom.