May weather - Spring 2024 - Douglas, Isle of Man

Weather in May
Frequently asked questions
Average temperature in May
Average pressure in May
Average wind speed in May
Average humidity in May
Average rainfall in May
Average rainfall days in May
Average snowfall in May
Average snowfall days in May
Average sea temperature in May
Average daylight in May
Average sunshine in May
Average sunshine days in May
Average UV index in May
Average cloud cover in May
Average visibility in May

Green lawns overlooking a ferry terminal in the small town of Douglas, Isle of Man

Weather in May

With temperatures averaging from 9.4°C (48.9°F) to 11.7°C (53.1°F), May exhibits a significant jump in the warmth factor, a clear sign of summer's impending arrival in Douglas. The increased heat heralds a rise in rainfall and humidity, making the town's climate damp and humid. Despite the rainy condition, sunshine hours continue to increase, offering a warming counterbalance to the higher humidity levels. The wind speed lowers slightly, easing the coastal breezes throughout the town.

Temperature

The start of May sees the average high-temperature at a cool 11.7°C (53.1°F), showing little difference from April's 9.6°C (49.3°F). Douglas records a slight downturn to an average a chilly 9.4°C (48.9°F) during the nights of May.

Humidity

In May, the average relative humidity in Douglas is 82%.

Rainfall

In Douglas, in May, during 13.2 rainfall days, 24mm (0.94") of precipitation is typically accumulated. Throughout the year, there are 184.8 rainfall days, and 478mm (18.82") of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Sea temperature

In Douglas, Isle of Man, the average seawater temperature in May is 10°C (50°F).
Note: Immersing oneself in 10°C (50°F) at sub-10°C (14°F) temperatures is a recipe for harsh cold shock and quickened breathing unless adequately equipped.

Daylight

In May, the average length of the day in Douglas, Isle of Man, is 16h and 2min.
On the first day of the month, sunrise is at 05:39 and sunset at 20:50. On the last day of May, in Douglas, sunrise is at 04:51 and sunset at 21:39 BST.

Sunshine

With an average of 8.3h of sunshine, May has the most sunshine of the year in Douglas.

UV index

May through September, with an average maximum UV index of 4, are months with the highest UV index. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index of 4 during May leads to these instructions:
Guard yourself - Avoiding sunburn is suggested. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.

Updated: Jan 25, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What are May temperatures in Douglas?

In May, the average high-temperature and low-temperature in Douglas are 11.7°C (53.1°F) and 9.4°C (48.9°F) respectively.

What is the average humidity in May in Douglas?

In May, the average relative humidity in Douglas, Isle of Man, is 82%.

How many days does it rain in May in Douglas?

In Douglas, Isle of Man, in May, during 13.2 rainfall days, 24mm (0.94") of precipitation is typically accumulated.

When it does not snow in Douglas?

April through October are months without snowfall.

What is the sea water temperature in May in Douglas?

In May, the average sea temperature is 10°C (50°F). At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

What is the average length of the day in May in Douglas?

The average day length in May in Douglas is 16h and 2min.

What time are sunrise and sunset in May in Douglas?

In May, on the first day of the month, sunrise is at 05:39 and sunset at 20:50. On the last day of the month, in Douglas, sunrise is at 04:51 and sunset at 21:39 BST.

What month has the most sunshine in Douglas?

May has the most sunshine of the year, with an average of 8.3h of sunshine.

How many hours of sunshine does Douglas have in May?

The average sunshine duration in May in Douglas, Isle of Man, is 8.3h.

What is the month with the highest UV index in Douglas?

The months with the highest UV index are May through September, with an average maximum UV index of 4.

What is the UV index reading in May in Douglas?

In Douglas, Isle of Man, the average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A May J J A S O N D

Apr

May

Jun

Average high temperature

9.6°C 49.3°F

11.7°C 53.1°F

14°C 57.2°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

26.3km/h 16.3mph

25.8km/h 16mph

22.9km/h 14.2mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

13.7

13.2

Average snowfall

0mm 0"

Average snowfall days

0.1

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

14.6

16.3

Average UV index

Average cloud cover

Average visibility

Average temperature in May
Douglas, Isle of Man

Average high temperature in May: 11.7°C

The warmest month (with the highest average high temperature) is August (16.1°C).
The month with the lowest average high temperature is February (7.8°C).

Average low temperature in May: 9.4°C

The month with the highest average low temperature is August (14.3°C).
The coldest month (with the lowest average low temperature) is February (5.9°C).

Average pressure in May
Douglas, Isle of Man

Average pressure in May: 1015.9mbar

The month with the highest atmospheric pressure is May (1015.9mbar).
The month with the lowest atmospheric pressure is November (1008mbar).

Average wind speed in May
Douglas, Isle of Man

Average wind speed in May: 24.6km/h

The windiest month (with the highest average wind speed) is December (36.7km/h).
The calmest month (with the lowest average wind speed) is June (21.5km/h).

Average humidity in May
Douglas, Isle of Man

Average humidity in May: 82%

The months with the highest relative humidity are June and July (84%).
The month with the lowest relative humidity is November (77%).

Average rainfall in May
Douglas, Isle of Man

Average rainfall in May: 24mm

The wettest month (with the highest rainfall) is November (62mm).
The driest month (with the least rainfall) is April (23mm).

Average rainfall days in May
Douglas, Isle of Man

Average rainfall days in May: 13.2 days

The month with the highest number of rainy days is November (17.8 days).
The months with the least rainy days are May and June (13.2 days).

Average snowfall in May
Douglas, Isle of Man

Average snowfall in May: 0mm

The months with the highest snowfall are January and December (5mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in May
Douglas, Isle of Man

Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in May
Douglas, Isle of Man

Average sea temperature in May: 10°C

The best month for swimming (with the highest average sea temperature) is August (15°C).
The coldest months (with the lowest average sea temperature) are February and March (7°C).

Average daylight in May /
Average sunshine in May
Douglas, Isle of Man

Average daylight in May: 16h and 0min

The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 30min).

Average sunshine in May: 8h and 2min

The month with the most sunshine is May (Average sunshine: 8h and 18min).
The months with the least sunshine are January, November and December (Average sunshine: 3h and 54min).

Average sunshine days in May
Douglas, Isle of Man

Average sunshine days in May: 16.3 days

The month with the most sunshine days is May (16.3 days).
The month with the least sunshine days is November (9 days).

Average UV index in May
Douglas, Isle of Man

Average UV index in May: 4

The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February and March (UV index 2).

Average cloud cover in May
Douglas, Isle of Man

Average cloud cover in May: 46

The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is May (Cloud cover 46).

Average visibility in May
Douglas, Isle of Man

Average visibility in May: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

May weather forecast
Douglas, Isle of Man

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