Douglas weather in May
Temperature, sea and sunshine in May: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in May
Fair
Best time to visit: July – August
What is the weather like in Douglas in May?
In May, Douglas is cool: daytime highs average 12 °C, and nights cool down to about 9 °C. The sea averages 10.3 °C – swimming is only for the hardy. The sun shines for around 8 hours a day. Rain is frequent, with about 11 rainy days and 59 mm in total. It is often windy, with gusts of around 33 km/h. All in all, May is a so-so month for a holiday in Douglas.
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 15 h 57 min05:16 – 21:12
- UV index
- 6 · highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 33 km/haverage daily peakAll months
- Cloud cover
- 61 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+1Europe/Isle_of_Man
How the score comes together
- Temperatureweight 50 %38 %
- Sunshineweight 20 %77 %
- Few rainy daysweight 30 %47 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in May
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
- Windproof jacket
Douglas in May: quick answers
Is Douglas hot in May?
No. In May, Douglas is cool: daytime highs average 12 °C and nights drop to about 9 °C.
Can you swim in Douglas in May?
Only if you don't mind cold water: in May the sea averages just 10.3 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Douglas in May?
Rain is frequent, with about 11 rainy days and 59 mm in total.
Douglas month by month
The whole year in DouglasAll destinations: Isle of ManWhere to go in MaySea temperature in May
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences