May weather forecastPortinfer, Jersey
May
Weather in May
May brings Portinfer a further injection of warmth as summer approaches. Increased hours of daylight and temperatures begin to make outdoor activities more pleasing. Decreasing wind speed and almost equal rainfall to the previous month, helps maintain clear skies and thus, more sunlight. Cloud cover also decreases slightly, letting the UV Index go up to 4. Portinfer experiences a moderate pressure of 1017.3mb during this month of the year.Temperature
During May, Portinfer observes a subtle ascent to a refreshing 13.2°C (55.8°F) from April's 11.4°C (52.5°F) in the average high-temperature. Portinfer's nocturnal average in May closely mirrors its daytime temperatures, settling at a cool 10.9°C (51.6°F).Humidity
In Portinfer, the average relative humidity in May is 82%.Rainfall
May and July are months with the least rain when the rain falls for 12.7 days and typically aggregates up to 27mm (1.06") of rain.Snowfall
In Portinfer, snow does not fall in February, April through October and December.Daylight
In May, the average length of the day is 15h and 20min.On the first day of the month, sunrise is at 05:46 and sunset at 20:25. On the last day of May, sunrise is at 05:08 and sunset at 21:05 BST.
Sunshine
The average sunshine in May is 9.3h.UV index
In May, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: In May, an average UV index of 4 transforms into the following instructions:
Exercise care. People with light skin might get burns in fewer than 30 minutes. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Portinfer, Jersey
- Average high temperature in May: 13.2°C
The warmest month (with the highest average high temperature) is August (18.1°C).
The month with the lowest average high temperature is February (9°C).
- Average low temperature in May: 10.9°C
The month with the highest average low temperature is August (16.3°C).
The coldest month (with the lowest average low temperature) is February (6.9°C).
Average pressure in May
Portinfer, Jersey
- Average pressure in May: 1017.3mbar
The month with the highest atmospheric pressure is September (1018mbar).
The month with the lowest atmospheric pressure is November (1011.8mbar).
Average wind speed in May
Portinfer, Jersey
- Average wind speed in May: 22.3km/h
The windiest month (with the highest average wind speed) is December (34.3km/h).
The calmest month (with the lowest average wind speed) is July (20.6km/h).
Average humidity in May
Portinfer, Jersey
- Average humidity in May: 82%
The month with the highest relative humidity is June (84%).
The months with the lowest relative humidity are February, November and December (78%).
Average rainfall in May
Portinfer, Jersey
- Average rainfall in May: 27mm
The wettest month (with the highest rainfall) is November (74mm).
The driest months (with the least rainfall) are May and July (27mm).
Average rainfall days in May
Portinfer, Jersey
- Average rainfall days in May: 12.7 days
The month with the highest number of rainy days is November (20.7 days).
The month with the least rainy days is May (12.7 days).
Average snowfall in May
Portinfer, Jersey
- Average snowfall in May: 0mm
The months with the highest snowfall are January, March and November (1mm).
The months with the least snowfall are February, April, May, June, July, August, September, October and December (0mm).
Average snowfall days in May
Portinfer, Jersey
- Average snowfall days in May: 0 days
The months with the highest number of snowfall days are February and March (0.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Portinfer, Jersey
- Average daylight in May: 15h and 18min
The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in May: 9h and 18min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in May
Portinfer, Jersey
- Average sunshine days in May: 15.3 days
The month with the most sunshine days is May (15.3 days).
The month with the least sunshine days is November (6.5 days).
Average UV index in May
Portinfer, Jersey
- Average UV index in May: 4
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is February (UV index 2).
Average cloud cover in May
Portinfer, Jersey
- Average cloud cover in May: 39
The months with the most cloud cover are January, November and December (Cloud cover 61).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in May
Portinfer, Jersey
- Average visibility in May: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
