May
Weather in May
Temperature
Swansea perceives a slight temperature ascent during May, with average high-temperatures adjusting from a cool 11.9°C (53.4°F) in April to a moderate 15°C (59°F). Swansea's average low-temperature in the month of May is recorded at a frosty 9.2°C (48.6°F).Rainfall
In Swansea, in May, it is raining for 15 days, with typically 63mm (2.48") of accumulated precipitation. In Swansea, during the entire year, the rain falls for 201 days and collects up to 999mm (39.33") of precipitation.Sea temperature
In Swansea, the average seawater temperature in May is 11.3°C (52.3°F).Note: Swimming in 11.3°C (52.3°F) can be lethal. Merely spending a few minutes in 13°C (55.4°F) waters feels harsh, and venturing below 10°C (50°F) might disrupt breathing control and bring about cold shock, contingent on individual resilience.
Daylight
The average length of the day in May in Swansea is 15h and 39min.On the first day of the month, sunrise is at 5:45 am and sunset at 8:39 pm. On the last day of May, in Swansea, sunrise is at 5:03 am and sunset at 9:23 pm BST.
Sunshine
May and June, with an average of 7h of sunshine, are months with the most sunshine in Swansea.UV index
In Swansea, United Kingdom, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index of 5 during May translates into these guidelines:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Swansea?
How much does it rain in Swansea in May?
How cold is the water in May in Swansea?
What is the average length of the day in May in Swansea?
When is the sunrise / sunset in May in Swansea?
What is the month with the most sunshine in Swansea?
How many hours of sunshine does Swansea have in May?
What is the UV index intensity in May in Swansea?
Average temperature in May
Swansea, United Kingdom
- Average high temperature in May: 15°C
The warmest month (with the highest average high temperature) is August (19.7°C).
The month with the lowest average high temperature is February (7.8°C).
- Average low temperature in May: 9.2°C
The month with the highest average low temperature is August (14°C).
The coldest month (with the lowest average low temperature) is February (3.6°C).
Average rainfall in May
Swansea, United Kingdom
- Average rainfall in May: 62.8mm
The wettest month (with the highest rainfall) is October (123.1mm).
The driest month (with the least rainfall) is April (58.5mm).
Average rainfall days in May
Swansea, United Kingdom
- Average rainfall days in May: 15 days
The months with the highest number of rainy days are January, November and December (20 days).
The month with the least rainy days is July (13 days).
Average sea temperature in May
Swansea, United Kingdom
- Average sea temperature in May: 11.3°C
The best month for swimming (with the highest average sea temperature) is August (16.8°C).
The coldest month (with the lowest average sea temperature) is March (8.3°C).
Average daylight in May /
Average sunshine in May
Swansea, United Kingdom
- Average daylight in May: 15h and 4min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in May: 7h
The months with the most sunshine are May and June (Average sunshine: 7h).
The months with the least sunshine are January, November and December (Average sunshine: 2h).
Average UV index in May
Swansea, United Kingdom
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 0).
