Climate and Average Weather Year Round in Selje Norway

In Selje, the summers are short, cool, and mostly cloudy; the winters are long, very cold, windy, and overcast; and it is wet year round. Over the course of the year, the temperature typically varies from 32°F to 61°F and is rarely below 24°F or above 69°F.

Based on the tourism score, the best time of year to visit Selje for warm-weather activities is from early July to mid August.

The warm season lasts for 2.7 months, from June 18 to September 8, with an average daily high temperature above 57°F. The hottest month of the year in Selje is August, with an average high of 60°F and low of 52°F.

The cool season lasts for 4.3 months, from November 19 to March 28, with an average daily high temperature below 44°F. The coldest month of the year in Selje is February, with an average low of 33°F and high of 40°F.

In Selje, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year in Selje begins around April 5 and lasts for 6.2 months, ending around October 10.

The clearest month of the year in Selje is May, during which on average the sky is clear, mostly clear, or partly cloudy 43% of the time.

The cloudier part of the year begins around October 10 and lasts for 5.8 months, ending around April 5.

The cloudiest month of the year in Selje is January, during which on average the sky is overcast or mostly cloudy 79% of the time.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Selje varies throughout the year.

The wetter season lasts 7.2 months, from August 13 to March 20, with a greater than 50% chance of a given day being a wet day. The month with the most wet days in Selje is December, with an average of 19.2 days with at least 0.04 inches of precipitation.

The drier season lasts 4.8 months, from March 20 to August 13. The month with the fewest wet days in Selje is May, with an average of 12.1 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone in Selje is September, with an average of 17.1 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 59% on September 26.

Rainfall

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Selje experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Selje. The month with the most rain in Selje is December, with an average rainfall of 7.1 inches.

The month with the least rain in Selje is May, with an average rainfall of 3.2 inches.

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Selje experiences significant seasonal variation in monthly snowfall.

The snowy period of the year lasts for 4.8 months, from November 15 to April 9, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Selje is February, with an average snowfall of 4.6 inches.

The snowless period of the year lasts for 7.2 months, from April 9 to November 15. The least snow falls around August 1, with an average total accumulation of 0.0 inches.

The length of the day in Selje varies extremely over the course of the year. In 2024, the shortest day is December 21, with 5 hours, 8 minutes of daylight; the longest day is June 20, with 19 hours, 46 minutes of daylight.

The earliest sunrise is at 3:47 AM on June 19, and the latest sunrise is 6 hours, 17 minutes later at 10:04 AM on December 25. The earliest sunset is at 3:09 PM on December 16, and the latest sunset is 8 hours, 24 minutes later at 11:33 PM on June 22.

Daylight saving time (DST) is observed in Selje during 2024, starting in the spring on March 31, lasting 6.9 months, and ending in the fall on October 27.

The figure below presents a compact representation of key lunar data for 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The perceived humidity level in Selje, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Selje experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 6.2 months, from September 29 to April 4, with average wind speeds of more than 11.2 miles per hour. The windiest month of the year in Selje is January, with an average hourly wind speed of 14.3 miles per hour.

The calmer time of year lasts for 5.8 months, from April 4 to September 29. The calmest month of the year in Selje is July, with an average hourly wind speed of 8.2 miles per hour.

The predominant average hourly wind direction in Selje varies throughout the year.

The wind is most often from the north for 2.1 months, from May 19 to July 21, with a peak percentage of 47% on June 14. The wind is most often from the south for 9.9 months, from July 21 to May 19, with a peak percentage of 51% on January 1.

Selje is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average water temperature experiences some seasonal variation over the course of the year.

The time of year with warmer water lasts for 2.6 months, from July 9 to September 26, with an average temperature above 55°F. The month of the year in Selje with the warmest water is August, with an average temperature of 58°F.

The time of year with cooler water lasts for 4.4 months, from December 27 to May 6, with an average temperature below 45°F. The month of the year in Selje with the coolest water is March, with an average temperature of 42°F.

To characterize how pleasant the weather is in Selje throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Selje for general outdoor tourist activities is from early July to mid August, with a peak score in the first week of August.

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Selje for hot-weather activities is from late July to mid August, with a peak score in the last week of July.

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Selje typically lasts for 6.9 months (212 days), from around April 9 to around November 7, rarely starting before March 18 or after May 1, and rarely ending before October 10 or after December 10.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

Based on growing degree days alone, the first spring blooms in Selje should appear around June 5, only rarely appearing before May 19 or after June 30.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.

The brighter period of the year lasts for 3.0 months, from May 4 to August 3, with an average daily incident shortwave energy per square meter above 4.4 kWh. The brightest month of the year in Selje is June, with an average of 5.5 kWh.

The darker period of the year lasts for 4.8 months, from October 11 to March 3, with an average daily incident shortwave energy per square meter below 1.2 kWh. The darkest month of the year in Selje is December, with an average of 0.1 kWh.

For the purposes of this report, the geographical coordinates of Selje are 62.044 deg latitude, 5.347 deg longitude, and 36 ft elevation.

The topography within 2 miles of Selje contains large variations in elevation, with a maximum elevation change of 2,110 feet and an average elevation above sea level of 333 feet. Within 10 miles also contains large variations in elevation (2,582 feet). Within 50 miles contains large variations in elevation (5,709 feet).

The area within 2 miles of Selje is covered by water (32%), shrubs (27%), and sparse vegetation (21%), within 10 miles by water (38%) and shrubs (30%), and within 50 miles by water (59%) and trees (13%).