Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average sea temperature in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
May's arrival is marked by an increase in the average high-temperature, moving from a cool 54.3°F (12.4°C) in April to an enjoyable 64.9°F (18.3°C). During the nights in May, an average low-temperature of 50.7°F (10.4°C) is observed.Humidity
The months with the highest humidity are May through July, with an average relative humidity of 78%.Rainfall
In Old Saybrook, in May, it is raining for 16.8 days, with typically 2.76" (70mm) of accumulated precipitation. In Old Saybrook, during the entire year, the rain falls for 166.2 days and collects up to 34.8" (884mm) of precipitation.Snowfall
January through May, November and December are months with snowfall. May is the last month it regularly snows. During 0.1 snowfall days, in May, Old Saybrook aggregates 0.28" (7mm) of snow. Throughout the year, there are 24.2 snowfall days, and 9.53" (242mm) of snow is accumulated.Ocean temperature
In Old Saybrook, in May, the average water temperature is 51.8°F (11°C).Note: Swimming in 51.8°F (11°C) can be lethal. Merely spending a few minutes in 55.4°F (13°C) waters feels harsh, and venturing below 50°F (10°C) might disrupt breathing control and bring about cold shock, contingent on individual resilience.
Daylight
In May, the average length of the day is 14h and 31min.On the first day of the month, sunrise is at 5:45 am and sunset at 7:47 pm. On the last day of May, sunrise is at 5:18 am and sunset at 8:15 pm EDT.
Sunshine
In Old Saybrook, the average sunshine in May is 8.6h.UV index
In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: In May, the maximum UV index of 5 suggests this advice:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Old Saybrook in May?
What is the most humid month?
What is the average humidity in May?
How many days does it rain in May?
What is the last month it snows?
How cold is the water in May?
How many hours of daylight does Old Saybrook have in May?
What time are sunrise and sunset in May in Old Saybrook?
How many hours of sunshine does Old Saybrook have in May?
What is the UV index intensity in May in Old Saybrook?
Average temperature in May
Old Saybrook, CT
- Average high temperature in May: 64.9°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in May: 50.7°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (25.5°F).
Average pressure in May
Old Saybrook, CT
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Old Saybrook, CT
- Average wind speed in May: 8.3mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in May
Old Saybrook, CT
- Average humidity in May: 78%
The months with the highest relative humidity are May, June and July (78%).
The month with the lowest relative humidity is April (73%).
Average rainfall in May
Old Saybrook, CT
- Average rainfall in May: 2.76"
The wettest month (with the highest rainfall) is December (3.66").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in May
Old Saybrook, CT
- Average rainfall days in May: 16.8 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is January (9 days).
Average snowfall in May
Old Saybrook, CT
- Average snowfall in May: 0.28"
The month with the highest snowfall is March (2.76").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in May
Old Saybrook, CT
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in May
Old Saybrook, CT
- Average sea temperature in May: 51.9°F
The best month for swimming (with the highest average sea temperature) is August (72.1°F).
The coldest month (with the lowest average sea temperature) is February (38.8°F).
Average daylight in May /
Average sunshine in May
Old Saybrook, CT
- Average daylight in May: 14h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in May: 8h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in May
Old Saybrook, CT
- Average sunshine days in May: 12.2 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is July (11.7 days).
Average UV index in May
Old Saybrook, CT
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in May
Old Saybrook, CT
- Average cloud cover in May: 44
The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in May
Old Saybrook, CT
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Old Saybrook, Connecticut, USA
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