Sea Temperature in Cornwall in May

Complete information on the sea temperature range in the Atlantic Ocean in Cornwall in May. Historical daily data. Climate details for May. Tips on swimming conditions and beach relaxation in Cornwall. 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 Cornwall in May

30°F

MINIMUN

40°F

AVERAGE

50°F

MAXIMUM

Historical Data of Water Temperature in May in Cornwall

Water Temperature Chart for Atlantic Ocean in Cornwall in May

Sea Temperature Table in Cornwall in May Over the Past Years

Day	2024	2023	2022	Average
May 1	34°C	32°C	34°C	35°C
May 2	36°C	32°C	34°C	35°C
May 3	34°C	30°C	34°C	34°C
May 4	36°C	32°C	34°C	35°C
May 5	37°C	32°C	36°C	36°C
May 6	37°C	30°C	36°C	36°C
May 7	37°C	30°C	36°C	36°C
May 8	39°C	32°C	37°C	37°C
May 9	39°C	32°C	37°C	37°C
May 10	39°C	32°C	37°C	37°C
May 11	41°C	32°C	37°C	38°C
May 12	41°C	34°C	39°C	38°C
May 13	43°C	34°C	39°C	39°C
May 14	43°C	32°C	39°C	39°C
May 15	45°C	34°C	41°C	41°C
May 16	45°C	34°C	41°C	41°C
May 17	45°C	34°C	41°C	41°C
May 18	45°C	32°C	43°C	41°C
May 19	46°C	34°C	43°C	42°C
May 20	46°C	34°C	41°C	42°C
May 21	46°C	36°C	41°C	42°C
May 22	46°C	36°C	43°C	43°C
May 23	48°C	36°C	43°C	43°C
May 24	45°C	36°C	45°C	43°C
May 25	45°C	37°C	45°C	43°C
May 26	46°C	37°C	45°C	44°C
May 27	46°C	37°C	46°C	44°C
May 28	46°C	39°C	46°C	45°C
May 29	46°C	36°C	45°C	44°C
May 30	46°C	36°C	45°C	44°C

Cornwall Climate and Swimming Opportunities in May

57°F

Average Day Air Temperature

45°F

Average Night Air Temperature

2 in

Precipitation Amount per Month

13 days

Number of Rainy Days

16 hrs

Daylight
per Day

6 hrs

Sunshine
per Day

11 mph

Average Wind Speed

83%

Average
humidity

Cornwall lies within the Prince Edward Island in Canada. The average daytime temperature in Cornwall in May is 14°C (58°F), while the nighttime average is 7°C (44°F). There are typically 13 rainy days during the month, with a total precipitation of 60 mm (2.4 inches). The daylight duration in May in Cornwall is 16 hours, with an average of 6 hours of sunshine per day. The average wind speed in May is 18 km/h (11 mph), and the humidity level is around 83%.

The water temperature in Cornwall in May ranges from 1°C to 7°C (34°F to 45°F). At the beginning of the month, the average temperature is around 2°C (36°F), shifting to 4°C (39°F) by mid-May and reaching 6°C (43°F) in the last ten days. Overall, the average sea temperature in Cornwall for May is 4°C (39°F). The water remains dangerously cold, but the slightly warmer air can make short swims somewhat more bearable. Still, only for the well-prepared.

Sea Temperature in May in Nearby Cities

Frequently Asked Questions About Water Temperatures in May in Cornwall

What is the sea temperature in Cornwall in May?

The water temperature in the Atlantic Ocean in Cornwall in May ranges from 1°C to 7°C (34°F to 45°F).

Is it possible to swim in the Atlantic Ocean in Cornwall in May?

The average sea temperature in Cornwall in May is 4°C (39°F), and the air temperature is 14°C (58°F), so the water remains dangerously cold, but the slightly warmer air can make short swims somewhat more bearable. Still, only for the well-prepared.