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
Observing a minor shift, the average high-temperature during May adjusts from April's icy 2.4°C (36.3°F) to a frosty 6.4°C (43.5°F). Harstad navigates through May with a barely noticeable decrease in temperature at night, stabilizing at a wintry 3.3°C (37.9°F).Humidity
The average relative humidity in May is 80%.Rainfall
The months with the least rainfall in Harstad are May and July Rain falls for 14.6 days and accumulates 53mm (2.09") of rain.Snowfall
January through June, September through December are months with snowfall in Harstad. In May, in Harstad, it is snowing for 6.3 days. Throughout May, 128mm (5.04") of snow is accumulated. In Harstad, during the entire year, snow falls for 94.6 days and aggregates up to 1922mm (75.67") of snow.Sea temperature
In Harstad, the average seawater temperature in May is 6.3°C (43.3°F).Note: If planning to swim in 6.3°C (43.3°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
The average length of the day in May is 13h and 47min.Sunshine
In May, the average sunshine in Harstad is 6.4h.UV index
In Harstad, the average daily maximum UV index in May is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for average individuals.Note: The UV index of 2 during May translates into the following guidance:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Frequently asked questions
How cold is it in Harstad in May?
What is the average humidity in May in Harstad?
What is the driest month in Harstad?
How much does it rain in Harstad in May?
How many days does it snow in May in Harstad?
What is the sea water temperature in May in Harstad?
How many hours of daylight does Harstad have in May?
How long on average sun shines in May in Harstad?
What is the UV index reading in May in Harstad?
Average temperature in May
Harstad, Norway
- Average high temperature in May: 6.4°C
The warmest month (with the highest average high temperature) is July (14.1°C).
The month with the lowest average high temperature is February (-1.2°C).
- Average low temperature in May: 3.3°C
The months with the highest average low temperature are July and August (9.9°C).
The coldest month (with the lowest average low temperature) is February (-4.5°C).
Average pressure in May
Harstad, Norway
- Average pressure in May: 1013.9mbar
The month with the highest atmospheric pressure is May (1013.9mbar).
The month with the lowest atmospheric pressure is December (1000.9mbar).
Average wind speed in May
Harstad, Norway
- Average wind speed in May: 14.2km/h
The windiest month (with the highest average wind speed) is March (19.3km/h).
The calmest month (with the lowest average wind speed) is July (11.1km/h).
Average humidity in May
Harstad, Norway
- Average humidity in May: 80%
The month with the highest relative humidity is April (83%).
The months with the lowest relative humidity are October, November and December (77%).
Average rainfall in May
Harstad, Norway
- Average rainfall in May: 53mm
The wettest month (with the highest rainfall) is March (95mm).
The driest months (with the least rainfall) are May and July (53mm).
Average rainfall days in May
Harstad, Norway
- Average rainfall days in May: 14.6 days
The month with the highest number of rainy days is September (17.5 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in May
Harstad, Norway
- Average snowfall in May: 128mm
The month with the highest snowfall is March (417mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in May
Harstad, Norway
- Average snowfall days in May: 6.3 days
The month with the highest number of snowfall days is March (19.2 days).
The months with the least snowfall days are July and August (0 days).
Average sea temperature in May
Harstad, Norway
- Average sea temperature in May: 6.3°C
The best month for swimming (with the highest average sea temperature) is August (12.3°C).
The coldest month (with the lowest average sea temperature) is March (3.8°C).
Average daylight in May /
Average sunshine in May
Harstad, Norway
- Average daylight in May: 13h and 5min
The month with the longest days is August (Average daylight: 17h and 42min).
The month with the shortest days is June (Average daylight: 0h and 0min).
- Average sunshine in May: 6h and 2min
The month with the most sunshine is August (Average sunshine: 9h and 0min).
The month with the least sunshine is December (Average sunshine: 0h and 18min).
Average sunshine days in May
Harstad, Norway
- Average sunshine days in May: 11 days
The month with the most sunshine days is January (13.6 days).
The month with the least sunshine days is March (8.3 days).
Average UV index in May
Harstad, Norway
- Average UV index in May: 2
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are February, March and November (UV index 1).
Average cloud cover in May
Harstad, Norway
- Average cloud cover in May: 57
The month with the most cloud cover is March (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 52).
Average visibility in May
Harstad, Norway
- Average visibility in May: 9km
The months with the highest visibility are January, February, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are March and April (8km).
Harstad, Norway
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