May weather forecastSaint Peter Port, Guernsey
May weather for Saint Peter Port, Guernsey: In Saint Peter Port, Guernsey, in May, it is raining for 11.8 days, with typically 27mm (1.06") of accumulated precipitation. On the first day of May in Saint Peter Port, Guernsey, sunrise is at 05:46 and sunset at 20:27.
May
Weather in May
May ushers in an appreciably warm period in Saint Peter Port, Guernsey with many sunny days. Compared to April, rainfall decreases to 27mm (1.06") and is experienced over comparatively fewer days, hence arriving at the driest month of the year. Wind speed declines a little, further promoting a calmer atmosphere. The sea temperature warms, encouraging water activities, and longer daylight hours pave the way for more outdoor exploration.Temperature
Transitioning into May, Saint Peter Port records an average high-temperature of a still cool 12.8°C (55°F), almost identical to April's 11°C (51.8°F). During the nights of May, Saint Peter Port records an average low-temperature of 10.6°C (51.1°F), reflecting a modest decrease from daytime highs.Humidity
In Saint Peter Port, the average relative humidity in May is 82%.Rainfall
In Saint Peter Port, Guernsey, in May, it is raining for 11.8 days, with typically 27mm (1.06") of accumulated precipitation. Throughout the year, there are 196.3 rainfall days, and 557mm (21.93") of precipitation is accumulated.Snowfall
February through December are months without snowfall.Sea temperature
In May, the average sea temperature in Saint Peter Port is 11°C (51.8°F).Note: If planning to swim in 11°C (51.8°F) under 10°C (50°F), wear a protective suit. Neglecting this advice might cause immediate cold shock and troubled breathing. A splash around 13°C (55.4°F) is not much warmer.
Daylight
In May, the average length of the day in Saint Peter Port, Guernsey, is 15h and 22min.On the first day of May in Saint Peter Port, sunrise is at 05:46 and sunset at 20:27. On the last day of the month, sunrise is at 05:08 and sunset at 21:07 BST.
Sunshine
In May, the average sunshine is 9.1h.UV index
The average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In May, the maximum UV index of 4 suggests this advice:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. The solar radiation around mid-day is intense; avoid the Sun and stay safe. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Saint Peter Port, Guernsey
- Average high temperature in May: 12.8°C
The warmest month (with the highest average high temperature) is August (17.8°C).
The month with the lowest average high temperature is February (9.2°C).
- Average low temperature in May: 10.6°C
The month with the highest average low temperature is August (15.8°C).
The coldest month (with the lowest average low temperature) is February (7°C).
Average pressure in May
Saint Peter Port, Guernsey
- Average pressure in May: 1017.4mbar
The month with the highest atmospheric pressure is September (1017.9mbar).
The month with the lowest atmospheric pressure is November (1011.5mbar).
Average wind speed in May
Saint Peter Port, Guernsey
- Average wind speed in May: 23.7km/h
The windiest month (with the highest average wind speed) is December (36km/h).
The calmest month (with the lowest average wind speed) is July (21.9km/h).
Average humidity in May
Saint Peter Port, Guernsey
- Average humidity in May: 82%
The months with the highest relative humidity are June and July (84%).
The months with the lowest relative humidity are November and December (77%).
Average rainfall in May
Saint Peter Port, Guernsey
- Average rainfall in May: 27mm
The wettest month (with the highest rainfall) is November (87mm).
The driest month (with the least rainfall) is July (26mm).
Average rainfall days in May
Saint Peter Port, Guernsey
- Average rainfall days in May: 11.8 days
The month with the highest number of rainy days is November (22.8 days).
The month with the least rainy days is June (11.5 days).
Average snowfall in May
Saint Peter Port, Guernsey
- Average snowfall in May: 0mm
The month with the highest snowfall is January (2mm).
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in May
Saint Peter Port, Guernsey
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average sea temperature in May
Saint Peter Port, Guernsey
- Average sea temperature in May: 11°C
The best month for swimming (with the highest average sea temperature) is August (17°C).
The coldest months (with the lowest average sea temperature) are February and March (9°C).
Average daylight in May /
Average sunshine in May
Saint Peter Port, Guernsey
- Average daylight in May: 15h and 24min
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 12min).
- Average sunshine in May: 9h and 6min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The months with the least sunshine are January, November and December (Average sunshine: 3h and 54min).
Average sunshine days in May
Saint Peter Port, Guernsey
- Average sunshine days in May: 16.3 days
The month with the most sunshine days is May (16.3 days).
The month with the least sunshine days is November (4 days).
Average UV index in May
Saint Peter Port, Guernsey
- Average UV index in May: 4
The months with the highest UV index are July, August and September (UV index 5).
The month with the lowest UV index is February (UV index 2).
Average cloud cover in May
Saint Peter Port, Guernsey
- Average cloud cover in May: 40
The months with the most cloud cover are November and December (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in May
Saint Peter Port, Guernsey
- 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).
