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 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
May
Weather in May
Temperature
As May takes its course, Johnstown's average high-temperature registers at a mild 13.6°C (56.5°F), closely aligning with the preceding month. During May nights, Johnstown records an average temperature of 6°C (42.8°F).Humidity
The months with the lowest humidity in Johnstown, Ireland, are April and May, with an average relative humidity of 86%.Rainfall
In May, the rain falls for 12.1 days. Throughout May, 15mm (0.59") of precipitation is accumulated. In Johnstown, during the entire year, the rain falls for 142.7 days and collects up to 221mm (8.7") of precipitation.Snowfall
May through October are months without snowfall.Daylight
In May, the average length of the day in Johnstown is 15h and 53min.On the first day of the month, sunrise is at 5:51 am and sunset at 8:55 pm. On the last day of May, sunrise is at 5:05 am and sunset at 9:42 pm IST.
Sunshine
In Johnstown, the average sunshine in May is 6.1h.UV index
May, June and August, with an average maximum UV index of 4, are months with the highest UV index. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily maximum UV index of 4 in May interprets into the following advice:
Exercise prevention - Precautions against solar damage are endorsed. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature in Johnstown?
What is the least humid month in Johnstown?
What is the average humidity in May in Johnstown?
How many days does it rain in May in Johnstown?
When it does not snow in Johnstown?
Does it snow in Johnstown in May?
How many hours of daylight does Johnstown have in May?
What time are sunrise and sunset in May in Johnstown?
How long on average sun shines in May in Johnstown?
What are the months with the highest UV index in Johnstown?
How high is the UV index in May in Johnstown?
Average temperature in May
Johnstown, Ireland
- Average high temperature in May: 13.6°C
The warmest month (with the highest average high temperature) is July (17.4°C).
The month with the lowest average high temperature is January (6.6°C).
- Average low temperature in May: 6°C
The month with the highest average low temperature is July (10.7°C).
The coldest month (with the lowest average low temperature) is February (1.8°C).
Average pressure in May
Johnstown, Ireland
- Average pressure in May: 1016mbar
The month with the highest atmospheric pressure is May (1016mbar).
The month with the lowest atmospheric pressure is November (1008.3mbar).
Average wind speed in May
Johnstown, Ireland
- Average wind speed in May: 14.8km/h
The windiest month (with the highest average wind speed) is January (19.7km/h).
The calmest month (with the lowest average wind speed) is July (12.9km/h).
Average humidity in May
Johnstown, Ireland
- Average humidity in May: 86%
The month with the highest relative humidity is December (92%).
The months with the lowest relative humidity are April and May (86%).
Average rainfall in May
Johnstown, Ireland
- Average rainfall in May: 15mm
The wettest month (with the highest rainfall) is August (26mm).
The driest months (with the least rainfall) are January and October (13mm).
Average rainfall days in May
Johnstown, Ireland
- Average rainfall days in May: 12.1 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is October (9.8 days).
Average snowfall in May
Johnstown, Ireland
- Average snowfall in May: 0mm
The months with the highest snowfall are January and February (15mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in May
Johnstown, Ireland
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (2.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Johnstown, Ireland
- Average daylight in May: 15h and 5min
The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in May: 6h and 1min
The month with the most sunshine is April (Average sunshine: 6h and 12min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in May
Johnstown, Ireland
- Average sunshine days in May: 11.8 days
The month with the most sunshine days is December (15.8 days).
The month with the least sunshine days is July (7.8 days).
Average UV index in May
Johnstown, Ireland
- Average UV index in May: 4
The months with the highest UV index are May, June and August (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in May
Johnstown, Ireland
- Average cloud cover in May: 62
The month with the most cloud cover is July (Cloud cover 69).
The month with the least cloud cover is April (Cloud cover 58).
Average visibility in May
Johnstown, Ireland
- Average visibility in May: 8km
The months with the highest visibility are January, February, March and December (9km).
The month with the lowest visibility is July (7km).
