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
In May, the average high-temperature rises from a cool 53.2°F (11.8°C) in April to an enjoyable 62.6°F (17°C). The average low-temperature, in May, is 50.7°F (10.4°C).Humidity
In Jamestown, the average relative humidity in May is 79%.Rainfall
In Jamestown, during 14.8 rainfall days, 2.09" (53mm) of precipitation is typically accumulated. In Jamestown, during the entire year, the rain falls for 148.1 days and collects up to 29.65" (753mm) of precipitation.Snowfall
January through March, May, November and December are months with snowfall. May is the first month it typically snows in Jamestown, Rhode Island. Throughout May, in the average 0.2 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, there are 22.9 snowfall days, and 8.78" (223mm) of snow is accumulated.Ocean temperature
In Jamestown, Rhode Island, the average seawater temperature in May is 51.6°F (10.9°C).Note: Swimming in 51.6°F (10.9°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.
Daylight
In Jamestown, the average length of the day in May is 14h and 32min.On the first day of the month, sunrise is at 5:42 am and sunset at 7:42 pm. On the last day of May, in Jamestown, sunrise is at 5:14 am and sunset at 8:11 pm EDT.
Sunshine
The average sunshine in May in Jamestown is 8.5h.UV index
In Jamestown, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In May, the average maximum UV index of 5 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
FAQ
What is the temperature in May in Jamestown?
What is the average humidity in May in Jamestown?
How many days does it rain in May in Jamestown?
When does it start snowing in Jamestown?
How cold is the water in May in Jamestown?
How many hours of daylight does Jamestown have in May?
What time are sunrise and sunset in May in Jamestown?
How long on average sun shines in May in Jamestown?
What is the UV index reading in May in Jamestown?
Average temperature in May
Jamestown, RI
- Average high temperature in May: 62.6°F
The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in May: 50.7°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (26.4°F).
Average pressure in May
Jamestown, RI
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Jamestown, RI
- Average wind speed in May: 9.6mph
The windiest month (with the highest average wind speed) is January (12.1mph).
The calmest month (with the lowest average wind speed) is August (8.1mph).
Average humidity in May
Jamestown, RI
- Average humidity in May: 79%
The month with the highest relative humidity is June (81%).
The month with the lowest relative humidity is March (73%).
Average rainfall in May
Jamestown, RI
- Average rainfall in May: 2.09"
The wettest month (with the highest rainfall) is October (3.27").
The driest month (with the least rainfall) is September (1.42").
Average rainfall days in May
Jamestown, RI
- Average rainfall days in May: 14.8 days
The month with the highest number of rainy days is April (15.6 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in May
Jamestown, RI
- Average snowfall in May: 0.08"
The month with the highest snowfall is February (2.76").
The months with the least snowfall are April, June, July, August, September and October (0").
Average snowfall days in May
Jamestown, RI
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (6.6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average sea temperature in May
Jamestown, RI
- Average sea temperature in May: 51.5°F
The best month for swimming (with the highest average sea temperature) is August (69.6°F).
The coldest month (with the lowest average sea temperature) is February (38.1°F).
Average daylight in May /
Average sunshine in May
Jamestown, RI
- Average daylight in May: 14h and 32min
The month with the longest days is June (Average daylight: 15h and 8min).
The month with the shortest days is December (Average daylight: 9h and 14min).
- Average sunshine in May: 8h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in May
Jamestown, RI
- Average sunshine days in May: 14.9 days
The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is April (12.3 days).
Average UV index in May
Jamestown, RI
- 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 and December (UV index 2).
Average cloud cover in May
Jamestown, RI
- Average cloud cover in May: 45
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in May
Jamestown, RI
- 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).
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