Sea Temperature in Swansea in May

Complete information on the sea temperature range in the Celtic Sea in Swansea in May. Historical daily data. Climate details for May. Tips on swimming conditions and beach relaxation in Swansea. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Water Temperature Range in Swansea in May

48°F

MINIMUN

53°F

AVERAGE

57°F

MAXIMUM

Historical Data of Water Temperature in May in Swansea

Water Temperature Chart for Celtic Sea in Swansea in May

Sea Temperature Table in Swansea in May Over the Past Years

Day	2024	2023	2022	Average
May 1	50°C	50°C	55°C	52°C
May 2	50°C	50°C	52°C	51°C
May 3	50°C	52°C	54°C	52°C
May 4	50°C	50°C	54°C	51°C
May 5	52°C	50°C	50°C	51°C
May 6	50°C	52°C	55°C	52°C
May 7	50°C	52°C	54°C	52°C
May 8	50°C	52°C	54°C	52°C
May 9	50°C	52°C	54°C	52°C
May 10	52°C	52°C	52°C	52°C
May 11	50°C	52°C	52°C	52°C
May 12	52°C	52°C	55°C	53°C
May 13	50°C	52°C	54°C	52°C
May 14	52°C	52°C	54°C	53°C
May 15	52°C	52°C	54°C	53°C
May 16	52°C	52°C	50°C	52°C
May 17	52°C	54°C	55°C	54°C
May 18	52°C	52°C	52°C	53°C
May 19	52°C	54°C	55°C	54°C
May 20	52°C	52°C	50°C	52°C
May 21	54°C	54°C	55°C	55°C
May 22	52°C	54°C	54°C	54°C
May 23	54°C	54°C	55°C	55°C
May 24	54°C	54°C	55°C	55°C
May 25	54°C	54°C	54°C	54°C
May 26	54°C	54°C	54°C	54°C
May 27	54°C	54°C	55°C	55°C
May 28	54°C	54°C	52°C	54°C
May 29	54°C	54°C	52°C	54°C
May 30	54°C	55°C	52°C	54°C

Swansea Climate and Swimming Opportunities in May

59°F

Average Day Air Temperature

46°F

Average Night Air Temperature

3 in

Precipitation Amount per Month

12 days

Number of Rainy Days

15 hrs

Daylight
per Day

6 hrs

Sunshine
per Day

9 mph

Average Wind Speed

82%

Average
humidity

Swansea lies within the Wales in United Kingdom. The average daytime temperature in Swansea in May is 15°C (59°F), while the nighttime average is 8°C (47°F). There are typically 12 rainy days during the month, with a total precipitation of 66 mm (2.6 inches). The daylight duration in May in Swansea is 15 hours, with an average of 6 hours of sunshine per day. The average wind speed in May is 14 km/h (9 mph), and the humidity level is around 82%.

The water temperature in Swansea in May ranges from 10°C to 12°C (50°F to 54°F). At the beginning of the month, the average temperature is around 11°C (52°F), shifting to 11°C (52°F) by mid-May and reaching 12°C (54°F) in the last ten days. Overall, the average sea temperature in Swansea for May is 12°C (54°F). Ideal conditions for a refreshing swim, though some may still find it a bit cool.

Sea Temperature in May in Nearby Cities

Frequently Asked Questions About Water Temperatures in May in Swansea

What is the sea temperature in Swansea in May?

The water temperature in the Celtic Sea in Swansea in May ranges from 10°C to 12°C (50°F to 54°F).

Is it possible to swim in the Celtic Sea in Swansea in May?

The average sea temperature in Swansea in May is 12°C (54°F), and the air temperature is 15°C (59°F), so ideal conditions for a refreshing swim, though some may still find it a bit cool.