Sea Temperature in Castine in May

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

41°F

MINIMUN

46°F

AVERAGE

50°F

MAXIMUM

Historical Data of Water Temperature in May in Castine

Water Temperature Chart for Atlantic Ocean in Castine in May

Sea Temperature Table in Castine in May Over the Past Years

Day	2024	2023	2022	Average
May 1	43°C	43°C	48°C	44°C
May 2	43°C	43°C	43°C	43°C
May 3	43°C	43°C	43°C	43°C
May 4	43°C	43°C	43°C	43°C
May 5	45°C	43°C	45°C	44°C
May 6	45°C	43°C	48°C	45°C
May 7	45°C	43°C	45°C	44°C
May 8	45°C	45°C	46°C	45°C
May 9	45°C	45°C	48°C	45°C
May 10	45°C	45°C	43°C	44°C
May 11	45°C	43°C	46°C	44°C
May 12	45°C	45°C	45°C	44°C
May 13	46°C	45°C	43°C	45°C
May 14	46°C	45°C	41°C	44°C
May 15	46°C	45°C	43°C	45°C
May 16	46°C	45°C	41°C	44°C
May 17	48°C	46°C	45°C	46°C
May 18	48°C	46°C	48°C	47°C
May 19	48°C	46°C	41°C	46°C
May 20	48°C	46°C	46°C	47°C
May 21	50°C	46°C	46°C	47°C
May 22	48°C	46°C	46°C	46°C
May 23	48°C	46°C	48°C	47°C
May 24	50°C	48°C	48°C	48°C
May 25	50°C	48°C	48°C	48°C
May 26	48°C	48°C	48°C	48°C
May 27	48°C	48°C	46°C	47°C
May 28	48°C	50°C	46°C	48°C
May 29	50°C	48°C	46°C	48°C
May 30	48°C	50°C	46°C	48°C

Castine 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

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

The water temperature in Castine in May ranges from 43°F to 48°F (6°C to 9°C). At the beginning of the month, the average temperature is around 45°F (7°C), shifting to 45°F (7°C) by mid-May and reaching 48°F (9°C) in the last ten days. Overall, the average sea temperature in Castine for May is 46°F (8°C). The water is frigid, but with warmer air, it might be tolerable for a quick swim. Wetsuits are recommended.

Sea Temperature in May in Nearby Cities

Frequently Asked Questions About Water Temperatures in May in Castine

What is the sea temperature in Castine in May?

The water temperature in the Atlantic Ocean in Castine in May ranges from 43°F to 48°F (6°C to 9°C).

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

The average sea temperature in Castine in May is 46°F (8°C), and the air temperature is 58°F (14°C), so the water is frigid, but with warmer air, it might be tolerable for a quick swim. Wetsuits are recommended.