May weather forecastGrimstad, Norway
May
Weather in May
May, the last month of the spring in Grimstad, is a cool month, with an average temperature varying between 12.9°C (55.2°F) and 7.8°C (46°F).Temperature
The start of May signals a slight increase in the average high-temperature, moving from a chilly 8.6°C (47.5°F) in April to a cool 12.9°C (55.2°F). During the month of May, the temperature falls to an average of 7.8°C (46°F).Humidity
May and June, with an average relative humidity of 71%, are the least humid months in Grimstad.Rainfall
In Grimstad, during May, the rain falls for 11.6 days and regularly aggregates up to 31mm (1.22") of precipitation. Throughout the year, there are 152.2 rainfall days, and 592mm (23.31") of precipitation is accumulated.Snowfall
May through October are months without snowfall in Grimstad.Sea temperature
In Grimstad, the average seawater temperature in May is 10.7°C (51.3°F).Note: Swimming in 10.7°C (51.3°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.
Daylight
In Grimstad, Norway, the average length of the day in May is 16h and 49min.On the first day of the month, sunrise is at 05:29 and sunset at 21:15. On the last day of May, sunrise is at 04:30 and sunset at 22:16 CEST.
Sunshine
In May, the average sunshine is 9.8h.UV index
The months with the highest UV index in Grimstad are May through September, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: In May, a daily maximum UV index of 4 leads to the following instructions:
Put precautions into practice - Guidance to elude sunburn is provided. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Grimstad, Norway
- Average high temperature in May: 12.9°C
The warmest month (with the highest average high temperature) is July (19.1°C).
The month with the lowest average high temperature is February (1.6°C).
- Average low temperature in May: 7.8°C
The months with the highest average low temperature are July and August (13.2°C).
The coldest month (with the lowest average low temperature) is February (-1.6°C).
Average pressure in May
Grimstad, Norway
- Average pressure in May: 1014.5mbar
The month with the highest atmospheric pressure is April (1014.6mbar).
The month with the lowest atmospheric pressure is December (1007.8mbar).
Average wind speed in May
Grimstad, Norway
- Average wind speed in May: 16.6km/h
The windiest month (with the highest average wind speed) is November (21.5km/h).
The calmest month (with the lowest average wind speed) is June (16.1km/h).
Average humidity in May
Grimstad, Norway
- Average humidity in May: 71%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are May and June (71%).
Average rainfall in May
Grimstad, Norway
- Average rainfall in May: 31mm
The wettest months (with the highest rainfall) are October and November (65mm).
The driest month (with the least rainfall) is April (25mm).
Average rainfall days in May
Grimstad, Norway
- Average rainfall days in May: 11.6 days
The month with the highest number of rainy days is November (16.8 days).
The month with the least rainy days is February (8.7 days).
Average snowfall in May
Grimstad, Norway
- Average snowfall in May: 0mm
The month with the highest snowfall is January (106mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in May
Grimstad, Norway
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (9.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in May
Grimstad, Norway
- Average sea temperature in May: 10.7°C
The best month for swimming (with the highest average sea temperature) is August (18.2°C).
The coldest month (with the lowest average sea temperature) is March (3.4°C).
Average daylight in May /
Average sunshine in May
Grimstad, Norway
- Average daylight in May: 16h and 48min
The month with the longest days is June (Average daylight: 18h and 12min).
The month with the shortest days is December (Average daylight: 6h and 30min).
- Average sunshine in May: 9h and 48min
The month with the most sunshine is June (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 6min).
Average sunshine days in May
Grimstad, Norway
- Average sunshine days in May: 18.5 days
The month with the most sunshine days is May (18.5 days).
The month with the least sunshine days is November (7.7 days).
Average UV index in May
Grimstad, Norway
- Average UV index in May: 4
The months with the highest UV index are May, June, July, August and September (UV index 4).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in May
Grimstad, Norway
- Average cloud cover in May: 39
The month with the most cloud cover is November (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in May
Grimstad, Norway
- Average visibility in May: 10km
The months with the highest visibility are April, May, June, July, August and September (10km).
The months with the lowest visibility are January, February, March, October, November and December (9km).
